XC9502 Series 2ch. Step-up / down DC/DC Controller ICs Mar, 14 2003 Ver. 2 ! Applications # PDAs # Palm Top Computers # Portable Audio Systems # Various Multi-Function Power Supplies " 2ch DC/DC Controller (Step-up + Step-down) " Input Voltage Range 0.9V ~ 10.0V " Output Voltage Externally Set-Up " Switching Frequency 180kHz (±15%) " Maximum Duty Cycle Step-up 80% (Typ.) Step-down 100% " PWM, PWM/PFM Switching Control " High Efficiency Step-up 85% (Typ.) Step-down 92% (Typ.) " Small MSOP-10 package ! Features 2ch DC/DC Controller Output 1 : Step-up DC/DC Controller Output 2 : Step-down DC/DC Controller Power Supply Voltage Range : 2.0V ~ 10V Output Voltage Range Output 1 (Step-up) : 1.5V ~ 30.0V Can be set freely with 0.9V (±2.0%) of reference voltage supply and external components. ! General Description The XC9502 series are PWM controlled, PWM/PFM automatic switching controlled, multi-functional, 2 channel step-up and down DC/DC controller ICs. With 0.9V of standard voltage supply internal, and using externally connected components, the output 1 voltage (step-up DC/DC controller) can be set freely within a range of 1.5V to 30V. Since the output 2 (stepdown DC/DC controller) has a built-in 0.9V reference voltage (accuracy ±2%), 0.9V to 6.0V can be set using external components. With a 180kHz frequency, the size of the external components can be reduced. Switching frequencies of 300kHz & 500kHz are also available as custom-designed products. The control of the XC9502 series can be switched between PWM control and PWM/PFM automatic switching control using external signals. Control switches from PWM to PFM during light loads when automatic switching is selected and the series is highly efficient from light loads through to large output currents. Output 2 (Step-down) : 0.9V ~ 6.0V Can be set freely with 0.9V (±2.0%) of reference voltage supply and external components. ±15% Oscillation Frequency : 180kHz Output Current Output 1 : more than 300mA (VIN=1.8V, VOUT=3.3V) Output 2 : more than 1000mA (VIN=3.3V, VOUT=1.8V) (300kHz, 500kHz custom) Stand-By Function Package Soft-Start Time : 3.0µA (MAX.) : MSOP-10 : 10 ms (internally set) ! Typical Performance Characteristics XC9502B093A (300kHz,VOUT1:3.3V,VOUT2:1.8V) L1=15µH,L2=22µH(CDRH5D28),CL1,CL2=92µF(Tantalum) SD1,SD2:CMS02, Tr1:XP161A1355P,Tr2:XP162A12A6P Efficiency 1,2 EFFI1,2 (%) Noise is easily reduced with PWM control since the frequency is fixed. The series gives freedom of control selection so that control suited to the application can be selected. Soft-start time is internally set to 10msec (Output 1) and offers protection against in-rush currents when the power is switched. This also prevents voltage overshoot. ! Typical Application Circuit 100 90 80 70 60 50 40 30 20 10 0 PWM/PFM Switching Control VOUT1:3.3V VOUT2:1.8V PWM Control VIN=2.7V 0.1 1 XC9502B092A Input : 2 cell, VOUT1 : 3.3V, VOUT2 : 1.8V VOUT1:3.3V SD1 :MA2Q737 RFB11 :200kΩ CFB1 :62pF Tr2:Pch MOSFET XP162A12A6P L1:22µH CDRH5D28 Tr2:Nch MOSFET :XP161A1355P CL1 :47µFX2 VIN =2.0V ~3.0V L2:22µH CDRH5D28 VOUT2:1.8V SD2 :MA2Q737 CIN :47µF CFB2 :62pF RFB21 :220kΩ CL2 :47µFX2 1 EXT1 EXT2/ 10 VPW M1 RFB12 :75kΩ VNE1 2 VDD GND 9 3 FB1 FB2 8 4 PW M1 PW M2 7 VPW M2 5 EN1 VNE2 EN2 6 10 100 Output Current 1,2 IOUT1,2 (mA) RFB22 :220kΩ 1 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs ! Pin Configuration 1 EXT1 EXT2 10 2 VDD GND 9 3 FB1 FB2 8 4 PWM1 PWM2 7 5 EN1 EN2 6 MSOP-10 (TOP VIEW) ! Pin Assignment PIN NUMBER PIN NAME 1 EXT 1 2 VDD Supply Voltage 3 FB1 Channel 1 : Output Voltage Monitor Feedback Pin <Threshold value : 0.9V. Output voltage can be set freely by connecting split resistors between VOUT1 and Ground.> 4 PWM1 Channel 1 : PWM/PFM Switching Pin <Control Output 1. PWM control when connected to VDD, PWM / PFM auto switching when connected to Ground. > 5 EN1 Channel 1 : Enable Pin <Connected to Ground when Output 1 is in stand-by mode. Connected to VDD when Output 1 is active. EXT1 is low when in stand-by mode.> 6 EN2 Channel 2 : Enable Pin <Connected to Ground when Output 2 is in stand-by mode. Connected to VDD when Output 2 is active. EXT2/ is high when in stand-by mode.> 7 PWM2 Channel 2 : PWM/PFM Switching Pin <Control Output 2. PWM control when connected to VDD, PWM / PFM auto switching when connected to Ground.> 8 FB2 Channel 2 : Output Voltage Monitor Feedback Pin <Threshold value : 0.9V. Output voltage can be set freely by connecting split resistors between VOUT2 and Ground.> 9 GND Ground 10 EXT2/ Channel 2 : External Transistor Drive Pin <Connected to Pch Power MOSFET Gate> FUNCTIONS Channel 1: External Transistor Drive Pin <Connected to Nch Power MOSFET Gate> ! Ordering Information XC9502123456 DESIGNATOR SYMBOL 1 2 3 B Standard (10 Pin) 0 9 FB Voltage 4 2 3 5 A 180kHz Package MSOP-10 R Embossed Tape Standard Feed L Embossed Tape Reverse Feed 5 6 DESCRIPTION 0.9V Switching Frequency 300kHz (custom) 500kHz (custom) 2 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs ! Absolute Maximum Ratings Ta=25OC PARAMETER SYMBOL RATINGS UNITS VDD Pin Voltage VDD - 0.3 ~ 12 V FB1, 2 Pin Voltage VFB - 0.3 ~ 12 V EN1, 2 Pin Voltage VEN - 0.3 ~ 12 V PWM1,2 Pin Voltage VPWM - 0.3 ~ 12 V EXT1, 2 Pin Voltage VEXT - 0.3 ~ VDD + 0.3 V EXT1, 2 Pin Current IEXT ± 100 mA Power Dissipation Pd 150 mW Operating Ambient Temperature Topr - 40 ~ + 85 O - 55 ~ + 125 O Storage Temperature Tstg C C * Voltage goes to Ground. ! Block Diagram PWM/PFM Controller 1 EXT1 + - - GND + + + Error Amp1 EXT2 PWM Comparator2 PW Comparator1 M VDD FB1 PWM/PFM Controller 2 FB2 Ramp Wave Generator 1 Ramp Wave Generator 2 Error Amp2 PWM1 PWM2 OSC Generator EN1 Vref1 = 0.9V with Soft Start1, EN1 EN1 to internal circuit EN2 to internal circuit 3 Vref2 = 0.9V with Soft Start 1, EN2 EN2 XC9502 Series ! Electrical Characteristics 2ch. Step-up / down DC/DC Controller ICs XC9502B092 Common Characteristics Ta=25OC (FOSC=180kHz) PARAMETER SYMBOL Supply Voltage (note 1) Max. Input Voltage VDD VIN CONDITIONS VDD ≥ 2.0V, IOUT1, 2=1mA VOUTSET VDD≠VOUT1 VIN ≥ 0.9V, IOUT1, 2=1mA VDD=VOUT1 FB1, 2=0V Supply Current 1 IDD1 Supply Current 1-1 IDD1-1 EN1=3.0V, EN2=0V, FB1=0V Supply Current 1-2 IDD1-2 EN2=3.0V, EN1=0V, FB2=0V Supply Current 1-3 IDD1-3 FB1=0V, FB2=1.0V FB1=1.0V, FB2=0V IDD1-4 Supply Current 1-4 Supply Current 2 IDD2 FB1, 2=1.0V Stand-by Current ISTB Same as IDD1, EN1=EN2=0V Switching Frequency FOSC Same as IDD1 EN1,2 "High" Voltage VENH FB1,2=0V EN1,2 "Low" Voltage VENL FB1,2=0V EN1,2 "High" Current IENH EN1,2=3.0V EN1,2 "Low" Current IENL EN1,2=0V, FB1,2=3.0V PWM1,2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V PWM1,2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V IFBH FB1, 2=3.0V FB1,2 "High" Current FB1,2 "Low" Current FB1, 2=1.0V VFBL Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V Output Voltage Range (note 3) Output 1 Characteristics VOUT1 VOUT2 VOUT1 VOUT2 MIN. TYP. MAX. UNITS 2.0 10.0 0.9 0.9 2.0 0.9 153 0.65 - 70 60 50 70 60 60 1.0 180 - 10.0 VIN 10.0 VIN 160 120 110 160 130 130 3.0 207 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 V V V V V V µA µA µA µA µA µA µA kHz V V µA µA µA µA µA µA TEST CIRCUIT 1 1 1 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 Ta=25OC Step-up Controller TYP. MAX. UNITS TEST CIRCUIT 0.882 0.900 VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628, Operation Start-up Voltage1 VST1-1 IOUT1=1.0mA, RFB11=200kΩ, RFB12=75kΩ (note 2) VDD ≠ VOUT1: IOUT1=1mA Oscillation Start-up Voltage1 VST2-1 FB1=0V Maximum Duty Ratio1 MAXDTY1 Same as IDD1 75 80 Minimum Duty Ratio1 MINDTY1 Same as IDD2 PFM Duty Ratio1 PFMDTY1 No Load, VPWM1=0V 22 30 IOUT=130mA Efficiency1 (note 4) EFFI1 85 N-ch MOSFET:XP161A1355P VOUT1 × 0.95V, EN1=0V→0.65V Soft-Start Time1 TSS1 5.0 10.0 28 EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V EXT1 "Low" ON Resistance REXTBL1 EN1=FB2=0V, EXT1=0.4V 22 0.65 PWM1 "High" Voltage VPWMH1 No Load PWM1 "Low" Voltage VPWML1 No Load Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V 0.918 V 4 PARAMETER FB1 Voltage SYMBOL CONDITIONS MIN. VFB1 Output 2 Characteristics 0.9 V 2 2.0 0.8 85 0 38 V V % % % 1 3 3 3 5 - % 5 20.0 47 30 0.20 mS Ω Ω V V 5 6 6 5 5 Ta=25OC Step-down Controller PARAMETER SYMBOL FB2 Voltage Minimum Operation Voltage Maximum Duty Ratio2 Minimum Duty Ratio2 PFM Duty Ratio2 VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 CONDITIONS VIN=3.0V, IOUT2=10mA MIN. TYP. MAX. UNITS TEST CIRCUIT 0.882 100 22 0.900 30 0.918 2.0 0 38 V V % % % 7 1 3 3 8 Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA Efficiency2 (note 4) EFFI2 92 % 8 P-ch MOSFET : XP162A12A6P VOUT2 × 0.95V, EN2=0V→0.65V Soft-Start Time2 8 10.0 TSS2 20.0 mS 5.0 28 47 6 EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V Ω 22 30 Ω 6 EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V 8 0.65 V PWM2 "High" Voltage VPWMH2 No Load V 8 PWM2 "Low" Voltage VPWML2 No Load 0.20 Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V Notes 1) Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD ≥ 2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources. 2) Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to VOUT1. With operations from V IN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once ouput voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable. 3) Please be careful not to exceed the breakdown voltage level of the peripheral parts. 4) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100 4 XC9502 Series ! Electrical Characteristics 2ch. Step-up / down DC/DC Controller ICs XC9502B093 Common Characteristics (FOSC=300kHz) PARAMETER SYMBOL Supply Voltage (note 1) Max. Input Voltage VDD VIN CONDITIONS VDD ≥ 2.0V, IOUT1, 2=1mA VOUTSET VDD≠VOUT1 VIN ≥ 0.9V, IOUT1, 2=1mA VDD=VOUT1 Supply Current 1 IDD1 FB1, 2=0V Supply Current 1-1 IDD1-1 EN1=3.0V, EN2=0V, FB1=0V Supply Current 1-2 IDD1-2 EN2=3.0V, EN1=0V, FB2=0V Supply Current 1-3 IDD1-3 FB1=0V, FB2=1.0V Supply Current 1-4 IDD1-4 FB1=1.0V, FB2=0V Supply Current 2 IDD2 FB1, 2=1.0V ISTB Same as IDD1, EN1=EN2=0V Stand-by Current Switching Frequency FOSC Same as IDD1 EN1,2 "High" Voltage VENH FB1,2=0V EN1,2 "Low" Voltage VENL FB1,2=0V IENH FB1,2=3.0V EN1,2 "High" Current IENL EN1,2=0V, FB1,2=3.0V EN1,2 "Low" Current PWM1,2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V PWM1,2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V IFBH FB1, 2=3.0V FB1,2 "High" Current VFBL FB1, 2=1.0V FB1,2 "Low" Current Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V Output Voltage Range (note 3) Output 1 Characteristics VOUT1 VOUT2 VOUT1 VOUT2 MIN. TYP. MAX. 2.0 10.0 0.9 0.9 2.0 0.9 255 0.65 - 100 80 60 100 70 70 1.0 300 - 10.0 VIN 10.0 VIN 190 150 120 190 150 150 3.0 345 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 Step-up Controller PARAMETER SYMBOL FB1 Voltage VFB1 TYP. MAX. VDD=3.0V, VIN=1.5V, IOUT1=10mA 0.882 0.900 Using Tr: 2SD1628, Operation Start-up Voltage1 VST1-1 IOUT1=1.0mA, RFB11=200kΩ, RFB12=75kΩ (note 2) VDD ≠ VOUT1: IOUT1=1mA Oscillation Start-up Voltage1 VST2-1 FB1=0V Maximum Duty Ratio1 MAXDTY1 Same as IDD1 75 80 Minimum Duty Ratio1 MINDTY1 Same as IDD2 PFM Duty Ratio1 PFMDTY1 No Load, VPWM1=0V 22 30 IOUT=130mA 85 Efficiency1 (note 4) EFFI1 N-ch MOSFET:XP161A1355P VOUT1 × 0.95V, EN1=0V→0.65V Soft-Start Time1 TSS1 5.0 10.0 28 EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V 22 EXT1 "Low" ON Resistance REXTBL1 EN1=FB2=0V, EXT1=0.4V PWM1 "High" Voltage VPWMH1 No Load 0.65 PWM1 "Low" Voltage VPWML1 No Load Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V 0.918 Output 2 Characteristics CONDITIONS MIN. SYMBOL FB2 Voltage Minimum Operation Voltage Maximum Duty Ratio2 Minimum Duty Ratio2 PFM Duty Ratio2 VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 CONDITIONS VIN=3.0V, IOUT2=10mA Notes 0.9 V 2 V V % % % 1 3 3 3 5 - % 5 20.0 47 30 0.20 mS Ω Ω V V 5 6 6 5 5 MIN. TYP. MAX. 0.900 100 22 0.900 30 0.900 2.0 0 38 Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA Efficiency2 EFFI2 92 P-ch MOSFET : XP162A12A6P VOUT2 × 0.95V, EN2=0V→0.65V Soft-Start Time2 TSS2 5.0 10.0 28 EXT2 "High" ON Resistance REXTBH2 EN2=0V, EXT2=VDD-0.4V 22 EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V PWM2 "High" Voltage VPWMH2 No Load 0.7 PWM2 "Low" Voltage VPWML2 No Load Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V Ta=25OC TEST UNITS CIRCUIT V 4 2.0 0.8 85 0 38 Step-down Controller PARAMETER Ta=25OC TEST UNITS CIRCUIT V 1 V 1 V 1 V V 2 V µA 3 µA 3 µA 3 µA 3 µA 3 µA 3 µA 3 kHz 3 V 3 V 3 µA 3 µA 3 µA 3 µA 3 µA 3 µA 3 Ta=25OC TEST UNITS CIRCUIT V 7 V 1 % 3 % 3 % 8 - % 8 20.0 47 30 0.20 mS Ω Ω V V 8 6 6 8 8 1) Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD ≥ 2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources. 2) Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to VOUT1. With operations from V IN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once ouput voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable. 3) Please be careful not to exceed the breakdown voltage level of the peripheral parts. 4) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100 5 XC9502 Series ! Electrical Characteristics 2ch. Step-up / down DC/DC Controller ICs XC9502B095 Common Characteristics PARAMETER SYMBOL Supply Voltage (note 1) Max. Input Voltage VDD VIN CONDITIONS VDD ≥ 2.0V, IOUT1, 2=1mA VOUTSET VDD≠VOUT1 VIN ≥ 0.9V, IOUT1, 2=1mA VDD=VOUT1 Supply Current 1 IDD1 FB1, 2=0V Supply Current 1-1 IDD1-1 EN1=3.0V, EN2=0V, FB1=0V Supply Current 1-2 IDD1-2 EN2=3.0V, EN1=0V, FB2=0V Supply Current 1-3 IDD1-3 FB1=0V, FB2=1.0V Supply Current 1-4 IDD1-4 FB1=1.0V, FB2=0V Supply Current 2 IDD2 FB1, 2=1.0V ISTB Same as IDD1, EN1=EN2=0V Stand-by Current Switching Frequency FOSC Same as IDD1 EN1,2 "High" Voltage VENH FB1,2=0V EN1,2 "Low" Voltage VENL FB1,2=0V IENH EN1,2=3.0V EN1,2 "High" Current IENL EN1,2=0V, FB1,2=3.0V EN1,2 "Low" Current PWM1,2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V PWM1,2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V IFBH FB1, 2=3.0V FB1,2 "High" Current VFBL FB1, 2=1.0V FB1,2 "Low" Current Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V Output Voltage Range (note 3) Output 1 Characteristics SYMBOL FB1 Voltage VFB1 Oscillation Start-up Voltage1 Maximum Duty Ratio1 Minimum Duty Ratio1 PFM Duty Ratio1 VOUT1 VOUT2 VOUT1 VOUT2 MIN. TYP. MAX. UNITS 2.0 10.0 0.9 0.9 2.0 0.9 425 0.65 - 130 110 80 130 90 90 1.0 500 - 10.0 VIN 10.0 VIN 250 220 150 240 190 190 3.0 575 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 V V V V V V µA µA µA µA µA µA µA kHz V V µA µA µA µA µA µA CONDITIONS VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628, VST1-1 IOUT1=1.0mA, RFB11=200kΩ, RFB12=75kΩ VDD ≠ VOUT1: IOUT1=1mA VST2-1 FB1=0V MAXDTY1 Same as IDD1 MINDTY1 Same as IDD2 PFMDTY1 No Load, VPWM1=0V EFFI1 Output 2 Characteristics SYMBOL FB2 Voltage Minimum Operation Voltage Maximum Duty Ratio2 Minimum Duty Ratio2 PFM Duty Ratio2 VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 Efficiency2 EFFI2 VIN=3.0V, IOUT2=10mA Same as IDD1 Same as IDD2 No Load, VPWM2=0V 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 UNITS TEST CIRCUIT 0.882 0.900 0.918 V 4 - - 0.9 V 2 75 22 80 30 2.0 0.8 85 0 38 V V % % % 1 3 3 3 5 - % 5 20.0 47 30 0.20 mS Ω Ω V V 5 6 6 5 5 Ta=25OC MIN. TYP. MAX. UNITS TEST CIRCUIT 0.882 100 22 0.900 30 0.918 2.0 0 38 V V % % % 7 1 3 3 8 - % 8 20.0 47 30 0.20 mS Ω Ω V V 8 6 6 8 8 IOUT2=250mA 91 P-ch MOSFET : XP162A12A6P VOUT2 × 0.95V, EN2=0V→0.65V Soft-Start Time2 TSS2 5.0 10.0 28 EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V 22 EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V PWM2 "High" Voltage VPWMH2 No Load 0.65 PWM2 "Low" Voltage VPWML2 No Load Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V Notes 2 MAX. IOUT=130mA CONDITIONS 1 TYP. Step-down Controller PARAMETER 1 1 MIN. 83 N-ch MOSFET:XP161A1355P VOUT1 × 0.95V, EN1=0V→0.65V Soft-Start Time1 TSS1 5.0 10.0 28 EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V 22 EXT1 "Low" ON Resistance REXTBL1 EN1=FB2=0V, EXT1=0.4V PWM1 "High" Voltage VPWMH1 No Load 0.65 PWM1 "Low" Voltage VPWML1 No Load Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V Efficiency1 (note 4) TEST CIRCUIT Ta=25OC Step-up Controller PARAMETER Operation Start-up Voltage1 (note 2) Ta=25OC (FOSC=500kHz) 1) Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD ≥ 2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources. 2) Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to VOUT1. With operations from V IN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once ouput voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable. 3) Please be careful not to exceed the breakdown voltage level of the peripheral parts. 4) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100 6 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs ! Operational Description The XC9502 series are multi-functional, 2 channel step-up and down DC/DC converter controller ICs with built-in high speed, low ON resistance drivers. <Error Amp> The Error Amplifier is designed to monitor the output voltage and it compares the feedback voltage (FB) with the reference voltage. In response to feedback of a voltage lower than the reference voltage, the output voltage of the error amp. decreases. <OSC Generator> This circuit generates the Switching Frequency which in turn generates the reference clock. <Ramp Wave Generator 1, 2> The Ramp Wave Generator generates a saw-tooth waveform based on outputs from the Phase Shift Generator. <PWM Comparator 1, 2> The PWM Comparator compares outputs from the Error Amp. and saw-tooth waveform. When the voltage from the Error Amp's output is low, the external switch will be set to ON. <PWM/PFM Controller 1, 2> This circuit generates PFM pulses. Control can be switched between PWM control and PWM/PFM automatic switching control using external signals. The PWM/PFM automatic switching mode is selected when the voltage of the PWM1 (2) pin is less than 0.2V, and the control switches between PWM and PFM automatically depending on the load. As the PFM circuit generates pulses based on outputs from the PWM comparator, shifting between modes occurs smoothly. PWM control mode is selected when the voltage of the PWM1 (2) pin is more than 0.65V. Noise is easily reduced with PWM control since the switching frequency is fixed. Control suited to the application can easily be selected which is useful in audio applications, for example, where traditionally, efficiencies have been sacrificed during stand-by as a result of using PWM control (due to the noise problems associated with the PFM mode in stand-by). <Vref with Soft Start 1, 2> The reference voltage, Vref (FB pin voltage)=0.9V, is adjusted and fixed by laser trimming (for output voltage settings, please refer to the notes on page 8). To protect against inrush current, when the power is switched on, and also to protect against voltage overshoot, soft-start time is set internally to 10ms. It should be noted, however, that this circuit does not protect the load capacitor (CL) from inrush current. With the Vref voltage limited and depending upon the input to the error amps, the operation maintains a balance between the two inputs of the error amps and controls the EXT pin's ON time so that it doesn't increase more than is necessary. <Chip Enable Function> This function controls the operation and shutdown of the IC. When the voltage of the EN1 or EN2 pins is 0.2V or less, the mode will be chip disable, the channel's operations will stop and the EXT1 pin will be kept at a low level (the external N-type MOSFET will be OFF) and the EXT2 pin will be kept at a high level (the external P-type MOSFET will be OFF). When both EN1 and EN2 are in a state of chip disable, current consumption will be no more than 3.0 µA. When the EN1 or EN2 pin's voltage is 0.65V or more, the mode will be chip enable and operations will recommence. With softstart, 95% of the set output voltage will be reached within 10mS (TYP) from the moment of chip enable. Although IC starts oscillation from a VIN of 0.9V, the IC's power supply pin (VDD) and the output voltage monitor pin (FB1) should be connected to VOUT1. The start-up sequence for EN1 and EN2 is required when operations begin with a power supply voltage of VDD=0.9V, and channel two's (output 2) EN2 pin should be set to chip disable and turn it to enable when VOUT1 is more than 2.0V. For power supply voltages of V DD<2.0V, oscillation may occur irrespective of the FB pin voltage. Should this happen, you may find that output voltage will be higher than the set voltage. The FB pin voltage and the reference voltage Vref will be compared and output voltage will be controlled when the power supply voltage is V DD>2.0V or more. With power supply voltages of VDD>2.0V, the start-up sequence for EN1 and EN2 will not be required. 7 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs <Setting of Output Voltage> Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on the values of RFB11(RFB21) and RFB12(RFB22). The sum of RFB11(RFB21) and RFB12(RFB22) should normally be 1 M Ω or less. VOUT=0.9 × (RFB11+RFB12) /RFB12 The value of CFB1(CFB2), speed-up capacitor for phase compensation, should be fzfb= 1 / (2 × π × CFB1 × RFB11) which is equal to 12kHz. Adjustments are required from 1kHz to 50kHz depending on the application, value of inductance (L), and value of load capacity (CL). [Example of Calculation] When RFB11=200kΩ and RFB12=75kΩ, VOUT1=0.9 × (200K+75k) / 75k=3.3V. [Typical Example] VOUT RFB11 RFB12 CFB1 (V) (pF) (kΩ) (kΩ) VOUT RFB11 RFB12 CFB1 (V) (pF) (kΩ) (kΩ) VOUT RFB11 RFB12 CFB1 (V) (pF) (kΩ) (kΩ) 2.5 390 220 8.0 120 15 100 30 270 430 33 33 13 82 220 330 62 2.7 360 180 12.0 160 3.0 560 240 24 220 220 62 3.3 200 75 62 330 270 39 390 270 33 5.0 82 18 160 The same method can be adopted for channel two (output 2) also. [External Components] Output 1 (Step-up DC/DC controller) Output 2 (Step-down DC/DC controller) 1.0 1.5 1.8 2.0 2.2 Tr 1 : * MOSFET XP161A1355PR Tr 2 : (TOREX N-Channel Power MOSFET) Note : VGS Breakdown Voltage of this Tr. is 8V so please be careful with the power supply voltage. For 6V power supply voltage, XP161A1265PR which VGS breakdown voltage is 12V is recommended. VST1 of XP161A1355PR is 1.2V (max.) and that of XP161A1265PR is 1.5V (max.) SD 1 : MA2Q737 (Schottky , MATSUSHITA) CMS02 (Schottky, TOSHIBA) L 1: 10µH (SUMIDA, CDRH5D28, FOSC = 500kHz) 15µH (SUMIDA, CDRH5D28, FOSC = 300kHz) 22µH (SUMIDA, CDRH5D28, FOSC = 180kHz) CL1 : 16V, 47µF (Tantalum) Increase capacity according to the equation below when the step-up voltage ratio is large and output current is high. * MOSFET XP162A12A6P (TOREX P-Channel Power MOSFET) Note : VGS Breakdown Voltage of this Tr. is 12V so please be careful with the power supply voltage. SD 2 : MA2Q737 (Schottky , MATSUSHITA) CMS02 (Schottky, TOSHIBA) L 2: 10µH (SUMIDA, CDRH5D28, FOSC = 500kHz) 22µH (SUMIDA, CDRH5D28, FOSC = 300kHz) 47µH (SUMIDA, CDRH5D28, FOSC = 180kHz) CL2 : 16V, 47µF (Tantalum) Increase capacity according to the equation below when the step-up voltage ratio is large and output current is high. C=(CL standard value)×(IOUT1(mA)/300mA×VOUT1/VIN C=(CL standard value)×(IOUT2 (mA)/500mA×VOUT2/VIN Tr : * NPN MOSFET 2SD1628 (SANYO) RB 1 : 500Ω ( Adjust in accordance with load & Tr.'s HFE.) Set according to the equation below. RB1 ≤ (VIN-0.7) x hFE / IC-REXTBH Tr : * PNP MOSFET 2SA1213 (SANYO) RB 2 : 500Ω ( Adjust in accordance with load & Tr.'s HFE.) Set according to the equation below. RB2 ≤ (VIN-0.7) x hFE / IC-REXTBH CB1 : CB1 : 2200pF (Ceramic) Set according to the equation below. CB1 ≤ (2 π x RB2 x FOSC x 0.7) 8 2200pF (Ceramic) Set according to the equation below. CB2 ≤ (2 π x RB2 x FOSC x 0.7) XC9502 Series 2ch. Step-up / down DC/DC Controller ICs ! Test Circuits Circuit 5 Circuit 1 SBD1 VIN RFB11 A Nch MOSFET1 2200pF 1 EXT1 2200pF CFB1 2 VDD 510Ω A 3 FB1 4 PWM1 1 EXT1 EXT2 10 VIN CIN 62pF CFB2 V CL1 FB2 8 CL2 2 VDD GND 9 3 FB1 FB2 8 RL RL2 4 PWM1 PWM2 7 PWM2 7 75kΩ RFB22 RFB12 5 EN1 EXT2 10 200kΩ RFB21 SBD2 GND 9 1µF CL1 L1 VOUT1 VOUT2 CIN 510Ω NPN Tr1 SBD1 L2 PNP Tr2 L1 VOUT1 5 EN1 OSC EN2 6 VPW M1 EN2 6 VEN1 Circuit 6 Circuit 2 SBD1 510Ω NPN Tr1 2200pF 1 EXT1 2200pF CFB1 VOUT2 CIN VIN RFB11 L2 PNP Tr2 L1 VOUT1 1 EXT1 510Ω EXT2 10 2 VDD GND 9 3 FB1 FB2 8 2 VDD SBD2 CFB2 3 FB1 Rp CL1 4 PWM1 CL2 4 PWM1 RL2 GND 9 A FB2 8 PWM2 7 OSC PWM2 7 1µF RFB22 RFB12 5 EN1 EXT2 10 RFB21 VPW M1 VDD 5 EN1 VPW M2 EN2 6 VEXT2 EN2 6 VFB1 VEXT1 VFB2 VEN2 VEN1 Circuit 7 Circuit 3 Pch MOSFET2 1 EXT1 GND 9 3 FB1 FB2 8 A VIN CIN A 4 PWM1 A A 5 EN1 EN2 6 1 EXT1 2 VDD 3 FB1 PWM2 7 OSC A A A 4 PWM1 5 EN1 VFB1 VPW M1 VEN1 VEN2 VPW M2 SBD2 GND 9 V FB2 8 CL2 RL PWM2 7 EN2 6 VFB2 Circuit 4 Circuit 8 L1 VOUT1 EXT2 10 OSC A 1µF VDD VOUT2 A EXT2 10 2 VDD L2 Nch MOSFET1 Pch MOSFET2 L2 VOUT2 A A 1 EXT1 SBD1 CL1 V EXT2 10 VIN VIN CIN 2 VDD CIN RL 3 FB1 4 PWM1 1 EXT1 GND 9 FB2 8 3 FB1 4 PWM1 PWM2 7 EXT2 10 SBD2 200kΩ 2 VDD GND 9 FB2 8 62pF V CL2 PWM2 7 75kΩ 5 EN1 VDD 5 EN1 EN2 6 1µF 9 EN2 6 RL XC9502 Series 2ch. Step-up / down DC/DC Controller ICs ! Peripheral Components Used for Test Circuits Circuits 1, 2 L1, L2 : SD1, SD2 : CL1, CL2 : CIN : NPN Tr1 : PNP Tr1 : RFB : CFB : 22µH (SUMIDA CDRH5D28) : XC9502B092A 15µH (SUMIDA CDRH5D28) : XC9502B093A 10µH (SUMIDA CDRH5D28) : XC9502B095A CRS02 (Schottky diode, TOSHIBA) EC10QS06 (Schottky diode, NIHON INTER) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 35MCE335MB2 x 3 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 2SD1628 (SANYO) 2SA1213 (TOSHIBA) Please use by the conditions as below. RFB11 + RFB12 ≤ 1MΩ RFB21 + RFB22 ≤ 1MΩ RFB11 / RFB12 = (Setting Output Voltage / 0.9) -1 VOUT2=(0.9-VOUT1) X (RFB21/RFB22) + 0.9V Please adjust as below: fzfb=1/(2 x π x CFB1 x RFB11) = 1kHz ~50kHz ( 12kHz usual) fzfb=1/(2 x π x CFB2 x RFB21) = 1kHz ~50kHz ( 12kHz usual) Circuits 4 L1 : SD1 : CL1 : CIN : N-ch MOSFET1 : 22µH (SUMIDA CDRH5D28) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A1355P (TOREX) Circuits 5 L1 : SD1 : CL1 : CIN : N-ch MOSFET1 : 22µH (SUMIDA CDRH5D28) : XC9502B092A 15µH (SUMIDA CDRH5D28) : XC9502B093A 10µH (SUMIDA CDRH5D28) : XC9502B095A MA2Q737 (Schottky, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A1355P (TOREX) Circuit 7 L1 : SD1 : CL1 : CIN : P-ch MOSFET1 : 22µH (SUMIDA CDRH5D28) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP162A12A6P (TOREX) Circuit 8 L2 : SD2 : CL2 : CIN : P-ch MOSFET1 : 22µH (SUMIDA CDRH5D28) : XC9502B092A 15µH (SUMIDA CDRH5D28) : XC9502B093A 10µH (SUMIDA CDRH5D28) : XC9502B095A MA2Q737 (Schottky, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A12A6P (TOREX) 10 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs ! NoteS on Use 1. Checking for Intermittent Oscillation The XC9502 series is subject to intermittent oscillation in the proximity of the maximum duty if the step-down ratio is low (e.g., from 4.2 V to 3.3 V) or a heavy load is applied where the duty ratio becomes high. Check waveforms at EXT under your operating conditions. A remedy for this problem is to raise the inductance of coil L or increase the load capacitance CL. 2. PWM/PFM Automatic Switching If PWM/PFM automatic switching control is selected and the step-up ration is low (e.g., from 4.5V to 5.0V) or the step-down ratio is high (e.g., from 10.0V to 1.0 V), the control mode remains in PFM setting in the whole load range, since the duty ratio under continuous-duty condition is smaller than the PFM duty ratio of the XC9502 series. The output voltage's ripple voltage becomes substantially high under heavy load conditions, with the XC9502 series appearing to be producing an abnormal oscillation. If this operation becomes a concern, set pins PWM1 and PWM2 to High to set the control mode to PWM setting. For use under the above-mentioned condition, measured data of PWM/PFM automatic switching control shown on the data sheets are available up to IOUT = 100 mA. 3. Ratings Use the XC9502 series and peripheral components within the limits of their ratings. 11 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs ! Typical Performance Characteristics < 1ch Step-up DC/DC Controller > (1) Output Voltage vs. Output Current FOSC=180kHz, VOUT1= 1.5V FOSC=180kHz, VOUT1= 2.5V L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 1.7 L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 2.7 PWM/PFM Switching Control PWM Control Output Voltage1 VOUT1 (V) Output Voltage1 VOUT1 (V) PWM/PFM Switching Control PWM Control 1.6 1.5 VIN=0.9V 1.4 1.2V 1.3 1.2 2.5 VIN=0.9V 2.4 1.2V 2.3 2.2 0.1 1 10 100 1000 0.1 Output Current 1 I OUT1 (mA) PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control Output Voltage1 VOUT1 (V) 3.3 VIN=0.9V 3.2 100 1.2V,1.5V 3.1 3.0 4.2V 5.1 5.0 VIN=1.5V 4.9 2.7V 3.3V 4.8 4.7 0.1 1 10 100 1000 0.1 Output Current 1 I OUT1 (mA) 1 10 100 Output Current 1 I OUT1 (mA) FOSC=180kHz, VOUT1= 8.0V L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1265P 8.2 5.0V PWM/PFM Switching Control PWM Control Output Voltage1 VOUT1 (V) 1000 L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 5.2 2.7V 3.4 10 FOSC=180kHz, VOUT1= 5.0V L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 3.5 1 Output Current 1 I OUT1 (mA) FOSC=180kHz, VOUT1= 3.3V Output Voltage1 VOUT1 (V) 1.5V 2.6 8.1 8.0 VIN=3.3V 4.2V 7.9 7.8 7.7 0.1 1 10 100 1000 Output Current 1 I OUT1 (mA) Dotted Arrowhead 12 PWM/PFM Switching Control 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 1ch Step-up DC/DC Controller > (1) Output Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT1= 3.3V FOSC=300kHz, VOUT1= 2.5V L1=15µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P Output Voltage1 VOUT1 (V) PWM/PFM Switching Control PWM Control 3.5 PWM/PFM Switching Control PWM Control 1.5V Output Voltage1 VOUT1 (V) 2.7 2.6 2.5 2.4 L1=15µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P VIN=0.9V 1.2V 2.3 3.3 VIN=0.9V 3.2 1.2V 0.1 3.1 1 10 100 0.1 1000 L1=15µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 1000 2.7 PWM/PFM Switching Control PWM Control Output Voltage1 VOUT1 (V) 3.3V 4.2V 5.0 4.9 100 L1=10µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P PWM/PFM Switching Control PWM Control 5.1 10 FOSC=500kHz, VOUT1= 2.5V FOSC=300kHz, VOUT1= 5.0V 5.2 1 Output Current 1 I OUT1 (mA) Output Current 1 I OUT1 (mA) Output Voltage1 VOUT1 (V) 1.5V 3.0 2.2 VIN=1.2V 2.7V 1.5V 4.8 1.5V 2.6 2.5 VIN=0.9V 2.4 1.2V 2.3 2.2 4.7 0.1 1 10 100 0.1 1000 FOSC=500kHz, VOUT1= 3.3V PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control Output Voltage1 VOUT1 (V) 1.5V 3.3 3.2 100 1000 L1=10µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 5.2 2.7V 3.4 10 FOSC=500kHz, VOUT1= 5.0V L1=10µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 3.5 1 Output Current 1 I OUT1 (mA) Output Current 1 I OUT1 (mA) Output Voltage1 VOUT1 (V) 2.7V 3.4 VIN=0.9V 1.2V 3.1 3.0 4.2V 5.1 3.3V 5.0 4.9 VIN=0.9V 1.2V 4.8 2.7V 1.5V 4.7 0.1 1 10 100 1000 0.1 Output Current 1 I OUT1 (mA) 1 10 100 Output Current 1 I OUT1 (mA) Dotted Arrowhead 13 PWM/PFM Switching Control 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 1ch Step-up DC/DC Controller > (2) Efficiency vs. Output Current FOSC=180kHz, VOUT1= 1.5V FOSC=180kHz, VOUT1= 2.5V L1=22µH(CDRH5D28), C L1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 80 Efficiency1 EFFI 1 (%) 80 Efficiency1 EFFI 1 (%) L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 60 VIN=0.9V 1.2V 40 20 60 VIN=0.9V 1.2V 40 20 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 1000 0.1 Output Current 1 I OUT1 (mA) Efficiency1 EFFI 1 (%) Efficiency1 EFFI 1 (%) 1.2V 1.5V 60 100 1000 L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 2.7V 80 10 FOSC=180kHz, VOUT1= 5.0V L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 1 Output Current 1 I OUT1 (mA) FOSC=180kHz, VOUT1= 3.3V VIN=0.9V 40 20 80 4.2V 3.3V 60 2.7V VIN=1.5V 40 20 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 0.1 1000 1 10 100 Output Current 1 I OUT1 (mA) Output Current 1 I OUT1 (mA) FOSC=180kHz, VOUT1= 8.0V L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1265P 100 Efficiency1 EFFI 1 (%) 1.5V 80 VIN=3.3V 4.2V 60 5.0V 40 20 PWM/PFM Switching Control PWM Control 0 0.1 1 10 100 1000 Output Current 1 I OUT1 (mA) Dotted Arrowhead 14 PWM/PFM Switching Control 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 1ch Step-up DC/DC Controller > (2) Efficiency vs. Output Current (Continued) FOSC=300kHz, VOUT1= 2.5V FOSC=300kHz, VOUT1= 3.3V L1=15µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 L1=15µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 80 Efficiency1 EFFI 1 (%) Efficiency1 EFFI 1 (%) 2.7V 1.5V 60 VIN=0.9V 1.2V 40 20 80 1.2V VIN=0.9V 1.5V 60 40 20 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 1000 0.1 Output Current 1 I OUT1 (mA) FOSC=300kHz, VOUT1= 5.0V 10 100 1000 FOSC=500kHz, VOUT1= 2.5V L1=15µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 1 Output Current 1 I OUT1 (mA) L1=10µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 PWM/PFM Switching Control PWM Control Efficiency1 EFFI 1 (%) Efficiency1 EFFI 1 (%) 80 4.2V 60 3.3V VIN=1.2V 2.7V 1.5V 40 20 80 1.5V 60 1.2V VIN=0.9V 40 20 PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 0.1 1000 Output Current 1 I OUT1 (mA) FOSC=500kHz, VOUT1= 3.3V 100 1000 L1=10µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 PWM/PFM Switching Control PWM Control 4.2V 80 80 Efficiency1 EFFI 1 (%) Efficiency1 EFFI 1 (%) 10 FOSC=500kHz, VOUT1= 5.0V L1=10µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 1 Output Current 1 I OUT1 (mA) 2.7V 60 VIN=0.9 1.2V 40 1.5V 20 3.3V 60 1.2V 40 2.7V VIN=0.9V 1.5V 20 PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 1000 0.1 Output Current 1 I OUT1 (mA) 1 10 100 Output Current 1 I OUT1 (mA) Dotted Arrowhead 15 PWM/PFM Switching Control 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 1ch Step-up DC/DC Controller > (3) Ripple Voltage vs. Output Current FOSC=180kHz, VOUT1= 2.5V FOSC=180kHz, VOUT1= 1.5V L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 PWM/PFM Switching Control PWM Control 80 Ripple Voltage1 (mV) Ripple Voltage1 (mV) PWM/PFM Switching Control PWM Control 60 1.2V VIN=0.9V 40 80 VIN=0.9V 1.2V 1.5V 60 40 20 20 0 0 0.1 1 10 100 0.1 1000 Output Current 1 I OUT1 (mA) L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 100 PWM/PFM Switching Control PWM Control Ripple Voltage1 (mV) 80 60 1000 L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P PWM/PFM Switching Control PWM Control Ripple Voltage1 (mV) 10 FOSC=180kHz, VOUT1= 5.0V FOSC=180kHz, VOUT1= 3.3V 100 1 Output Current 1 I OUT1 (mA) 1.5V VIN=0.9V 40 2.7V 4.2V 80 2.7V 60 VIN=1.5V 40 20 20 3.3V 1.2V 0 0 0.1 1 10 100 0.1 1000 1 10 100 Output Current 1 I OUT1 (mA) Output Current 1 I OUT1 (mA) FOSC=180kHz, VOUT1= 8.0V L1=22µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1265P 100 PWM/PFM Switching Control PWM Control Ripple Voltage1 (mV) 80 4.2V 60 5.0V VIN=3.3 V 40 20 0 0.1 1 10 100 1000 Output Current 1 I OUT1 (mA) Dotted Arrowhead 16 PWM/PFM Switching Control 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 1ch Step-up DC/DC Controller > (3) Ripple Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT1= 2.5V FOSC=300kHz, VOUT1= 3.3V L1=15µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 L1=15µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 1.2V 60 VIN=0.9V 40 20 1.2V 60 VIN=0.9V 40 2.7V 20 0 0 0.1 1 10 100 1000 0.1 Output Current 1 I OUT1 (mA) 1.5V 60 1000 PWM/PFM Switching Control PWM Control 2.7V 80 100 L1=10µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 4.2V 3.3V Ripple Voltage1 (mV) Ripple Voltage1 (mV) PWM/PFM Switching Control PWM Control 10 FOSC=500kHz, VOUT1= 2.5V L1=15µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 1 Output Current 1 I OUT1 (mA) FOSC=300kHz, VOUT1= 5.0V VIN=1.2V 40 20 80 1.2V 60 VIN=0.9V 1.5V 40 20 0 0 0.1 1 10 100 1000 0.1 Output Current 1 I OUT1 (mA) 100 PWM/PFM Switching Control PWM Control 2.7V Ripple Voltage1 (mV) 1.2 60 VIN=0.9V 40 20 1000 L1=10µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 PWM/PFM Switching Control PWM Control 80 10 FOSC=500kHz, VOUT1= 5.0V L1=10µH(CDRH5D28), CL1=94µF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 1 Output Current 1 I OUT1 (mA) FOSC=500kHz, VOUT1= 3.3V Ripple Voltage1 (mV) 1.5V 80 1.5V Ripple Voltage1 (mV) Ripple Voltage1 (mV) 80 2.7V 80 1.5V 1.2V 60 VIN=0.9V 40 4.2V 20 1.5V 3.3V 0 0 0.1 1 10 100 1000 0.1 Output Current 1 I OUT1 (mA) 1 10 100 Output Current 1 I OUT1 (mA) Dotted Arrowhead 17 PWM/PFM Switching Control 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (4) Output Voltage vs. Output Current FOSC=180kHz, VOUT2=1.0V FOSC=180kHz, VOUT2=1.0V L2=47µH(CDRH6D38), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1.2 L2=47µH(CDRH6D38), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1.2 PWM/PFM Switching Control 1.1 Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V) PWM Control 10V 1.0 0.9 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 0.8 0.7 1.1 10V 1.0 0.9 4.2V 5.0V 6.0V 8.0V VIN=2.7V 3.3V 0.8 0.7 0.1 1 10 100 1000 0.1 1 Output Current2 I OUT2 (mA) L2=47µH(CDRH6D38), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 5.2 PWM/PFM Switching Control PWM Control Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V) 1000 L2=47µH(CDRH6D38), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P PWM/PFM Switching Control PWM Control 3.4 3.3 3.2 VIN=4.2V 5.0V 6.0V 8.0V 10V 3.1 3.0 5.1 5.0 4.9 VIN= 6.0V 8.0V 10V 4.8 4.7 0.1 1 10 100 1000 0.1 Output Current2 I OUT2 (mA) 100 1000 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1.2 PWM Control Output Voltage2 VOUT2 (V) PWM/PFM Switching Control 1.1 1.0 0.9 10 FOCS=300kHz, VOUT2=1.0V L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1.2 1 Output Current2 I OUT2 (mA) FOSC=300kHz, VOUT2=1.0V Output Voltage2 VOUT2 (V) 100 FOSC=180kHz, VOUT2=5.0V FOSC=180kHz, VOUT2=3.3V 3.5 10 Output Current2 I OUT2 (mA) VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 0.8 0.7 VIN=2.7V 3.3V 5.0V 1.1 1.0 0.9 4.2V 6.0V 8.0V 10V 0.8 0.7 0.1 1 10 100 Output Current2 I OUT2 (mA) 1000 0.1 1 10 100 Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 18 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (4) Output Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT2=1.8V FOSC=300kHz, VOUT2=1.8V L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 2.0 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 2.0 PWM/PFM Switching Control Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V) PWM Control 1.9 1.8 1.7 VIN= 2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 1.6 6.0V 8.0V 10V 1.9 1.8 1.7 VIN= 2.7V 3.3V 4.2V 5.0V 1.6 1.5 1.5 0.1 1 10 100 0.1 1000 FOSC=300kHz, VOUT2=2.5V 1000 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 2.7 PWM/PFM Switching Control 2.6 Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V) 100 FOSC=300kHz, VOUT2=2.5V PWM Control 10.0V 2.5 2.4 VIN= 2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 2.3 2.2 10V 2.6 8.0V 2.5 2.4 3.3V 4.2V 5.0V 6.0V VIN=2.7V 2.3 2.2 0.1 1 10 100 1000 0.1 Output Current2 I OUT2 (mA) FOSC=300kHz, VOUT2=3.3V 10 100 1000 FOSC=300kHz, VOUT2=3.3V L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P PWM Control 3.5 VIN=4.2V 5.0V 6.0V 8.0V 3.4 1 Output Current2 I OUT2 (mA) L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 3.5 PWM/PFM Switching Control Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V) 10 Output Current2 I OUT2 (mA) L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 2.7 1 Output Current2 I OUT2 (mA) 3.3 10.0V 3.2 3.1 3.0 0.1 1 10 100 3.4 VIN=4.2V 5.0V 6.0V 8.0V 3.3 3.2 10.0V 3.1 1000 Output Current2 I OUT2 (mA) 3.0 0.1 1 10 100 Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 19 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (4) Output Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT2=5.0V FOSC=300kHz, VOUT2=5.0V L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 5.2 PWM Control PWM/PFM Switching Control 10.0V 5.1 Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V) L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 5.2 5.0 VIN= 6.0V 8.0V 4.9 4.8 4.7 10.0V 5.1 5.0 VIN= 6.0V 8.0V 4.9 4.8 4.7 0.1 1 10 100 1000 0.1 Output Current2 I OUT2 (mA) FOSC=500kHz, VOUT2=1.0V 1.2 1000 PWM/PFM Switching Control Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V) 100 L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P PWM Control 1.1 1.0 0.9 10 FOSC=500kHz, VOUT2=1.0V L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1.2 1 Output Current2 I OUT2 (mA) VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 0.8 0.7 VIN=2.7V 3.3V 4.2V 5.0V 1.1 1.0 0.9 6.0V 8.0V 10V 0.8 0.7 0.1 1 10 100 1000 0.1 1 Output Current2 I OUT2 (mA) FOSC=500kHz, VOUT2=3.3V 100 1000 FOSC=500kHz, VOUT2=3.3V L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 3.5 10 Output Current2 I OUT2 (mA) L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 3.5 PWM Control PWM/PFM Switching Control Output Voltage2 VOUT2 (V) Output Voltage2 VOUT2 (V) 10V 3.4 3.3 VIN=4.2V 5.0V 6.0V 8.0V 10V 3.2 3.1 3.0 3.4 3.3 VIN=4.2V 5.0V 6.0V 8.0V 3.2 3.1 3.0 0.1 1 10 100 Output Current2 I OUT2 (mA) 1000 0.1 1 10 100 Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 20 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (4) Output Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT2=5.0V L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 5.2 Output Voltage2 VOUT2 (V) PWM/PFM Switching Control PWM Control 5.1 5.0 VIN= 6.0V 8.0V 10V 4.9 4.8 4.7 0.1 1 10 100 1000 Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 21 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (5) Efficiency vs. Output Current FOSC=180kHz, VOUT2=1.0V FOSC=180kHz, VOUT2=1.0V L2=47µH(CDRH6D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 100 VIN=5.0V 80 Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) PWM/PFM Switching Control PWM Control 60 4.2V 40 3.3V VIN=2.7V 20 L2=47µH(CDRH6D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 0 80 8.0V 60 6.0V 40 10V 20 PWM/PFM Switching Control PWM Control 0 0.1 1 10 100 1000 0.1 10 100 Output Current2 I OUT2 (mA) FOSC=180kHz, VOUT2=3.3V FOSC=180kHz, VOUT2=5.0V 1000 L2=47µH(CDRH6D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P L2=47µH(CDRH6D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 1 Output Current2 I OUT2 (mA) 100 VIN=4.2V Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) 5.0V 80 10V 60 8.0V 6.0V 40 20 80 10V 60 8.0V VIN=6.0V 40 20 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 1000 0.1 100 FOSC=300kHz, VOUT2=1.0V FOSC=300kHz, VOUT2=1.0V 100 Efficiency2 EFFI12 (%) 80 60 4.2 3.3V 40 VIN=2.7V 20 1000 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control Efficiency2 EFFI12 (%) 10 Output Current2 I OUT2 (mA) L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 1 Output Current2 I OUT2 (mA) 10V 80 8.0V 6.0V 60 40 20 VIN=5.0V 0 0 0.1 1 10 100 1000 0.1 Output Current2 I OUT2 (mA) 1 10 100 Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 22 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (5) Efficiency vs. Output Current (Continued) FOSC=300kHz, VOUT2=1.8V FOSC=300kHz, VOUT2=1.8V L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) 100 VIN= 2.7V 60 3.3V 40 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 4.2V 20 0 PWM/PFM Switching Control PWM Control 80 10V 60 VIN=5.0V 8.0V 40 6.0V 20 0 0.1 1 10 100 1000 0.1 1 Output Current2 I OUT2 (mA) FOSC=300kHz, VOUT2=2.5V Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) 80 VIN=2.7V 3.3V 40 4.2V 20 PWM/PFM Switching Control PWM Control 0 PWM/PFM Switching Control PWM Control 80 10V 60 VIN=5.0V 40 8.0V 6.0V 20 0 0.1 1 10 100 1000 0.1 Output Current2 I OUT2 (mA) Efficiency2 EFFI12 (%) 60 8.0V 40 6.0V VIN=4.2V 1000 PWM/PFM Switching Control PWM Control 10V 20 100 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 10 FOSC=300kHz, VOUT2=5.0V L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 1 Output Current2 I OUT2 (mA) FOSC=300kHz, VOUT2=3.3V Efficiency2 EFFI12 (%) 1000 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 60 100 FOSC=300kHz, VOUT2=2.5V L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr:2XP162A12A6P 100 10 Output Current2 I OUT2 (mA) 5.0V 80 60 10V 40 8.0V VIN=6.0V 20 0 0 0.1 1 10 100 0.1 1000 1 10 100 Output Current2 I OUT2 (mA) Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 23 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (5) Efficiency vs. Output Current (Continued) FOSC=500kHz, VOUT2=1.0V FOSC=500kHz, VOUT2=1.0V L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) PWM/PFM Switching Control PWM Control 60 4.2V 40 3.3V VIN=2.7V 20 0 VIN=5.0V 60 10V 40 8.0V 6.0V 20 0 0.1 1 10 100 1000 0.1 80 1 100 Output Current2 I OUT2 (mA) FOSC=500kHz, VOUT2=3.3V FOSC=500kHz, VOUT2=3.3V Efficiency2 EFFI12 (%) 8.0V 60 6.0V 5.0V 40 VIN=4.2V 20 80 60 10V 40 8.0V VIN=6.0V 20 PWM/PFM Switching Control PWM Control 0 PWM/PFM Switching Control PWM Control 0 1 10 100 1000 0.1 Output Current2 I OUT2 (mA) 1 10 100 Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 24 1000 L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 10V 0.1 10 Output Current2 I OUT2 (mA) L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 Efficiency2 EFFI12 (%) 80 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (6) Ripple Voltage vs. Output Current FOSC=180kHz, VOUT2=1.0V FOSC=180kHz, VOUT2=1.0V L2=47µH(CDRH6D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=47µH(CDRH6D28), CL2=94µF(Tantalum) SD2CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 80 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 60 40 60 VIN=2.7V 40 4.2V 10V 5.0V 6.0V 8.0V 3.3V 20 20 0 0 0.1 1 10 100 0.1 1000 1 10 100 1000 Output Current2 I OUT2 (mA) Output Current2 I OUT2 (mA) FOSC=180kHz, VOUT2=3.3V FOSC=180kHz, VOUT2=3.3V L2=47µH(CDRH6D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=47µH(CDRH6D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control PWM/PFM Switching Control 60 10V 40 8.0V 5.0V VIN=4.2V 6.0V 20 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 80 80 60 VIN=4.2V 40 5.0V 6.0V 8.0V 10V 20 0 0.1 1 10 100 0 1000 0.1 Output Current2 I OUT2 (mA) 1 10 100 1000 Output Current2 I OUT2 (mA) FOSC=180kHz, VOUT2=5.0V FOSC=180kHz, VOUT2=5.0V L2=47µH(CDRH6D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=47µH(CDRH6D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control 80 80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) PWM Control 60 40 10V 8.0V VIN=6.0V 20 60 40 VIN=6.0V 8.0V 10V 20 0 0 0.1 1 10 100 Output Current2 I OUT2 (mA) 1000 0.1 1 10 100 Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 25 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (6) Ripple Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT2=1.0V FOSC=300kHz, VOUT2=1.0V L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control PWM/PFM Switching Control 80 60 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 80 VIN=2.7V 3.3V 5.0V 6.0V 40 8.0V 10V 4.2V 20 VIN=2.7V 60 40 6.0V 5.0V 10V 4.2V 8.0V 3.3V 20 0 0 0.1 1 10 100 1000 0.1 10 100 Output Current2 I OUT2 (mA) FOSC=300kHz, VOUT2=1.8V FOSC=300kHz, VOUT2=1.8V L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 1 Output Current2 I OUT2 (mA) 1000 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control Ripple Voltage2 (mV) Ripple Voltage2 (mV) PWM/PFM Switching Control 80 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 60 40 20 80 60 5.0V 4.2V 10V 8.0V 6.0V 3.3V VIN=2.7V 40 20 0 0 0.1 1 10 100 1000 0.1 100 FOSC=300kHz, VOUT2=2.5V FOSC=300kHz, VOUT2=2.5V PWM/PFM Switching Control Ripple Voltage2 (mV) 80 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 60 1000 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control Ripple Voltage2 (mV) 10 Output Current2 I OUT2 (mA) L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 1 Output Current2 I OUT2 (mA) 40 80 60 VIN=2.7V 10V 8.0V 6.0V 5.0V 40 4.2V 3.3V 20 20 0 0 0.1 1 10 100 0.1 1000 1 10 100 Output Current2 I OUT2 (mA) Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 26 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (6) Ripple Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT2=3.3V FOSC=300kHz, VOUT2=3.3V L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 80 VIN=4.2V 5.0V 6.0V 8.0V 10V 60 40 60 VIN=4.2V 5.0V 20 20 0 0 0.1 1 10 100 0.1 1000 10 100 Output Current2 I OUT2 (mA) FOSC=300kHz, VOUT2=5.0V FOSC=300kHz, VOUT2=5.0V 1000 L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 1 Output Current2 I OUT2 (mA) L2=22µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 60 VIN=6.0V 40 8.0V 10V 60 40 VIN=6.0V 10.0V 8.0V 20 20 0 0 0.1 1 10 100 0.1 1000 10 100 1000 FOSC=500kHz, VOUT2=1.0V FOSC=500kHz, VOUT2=1.0V L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 1 Output Current2 I OUT2 (mA) Output Current2 I OUT2 (mA) L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 6.0V 8.0V 10.0V 40 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 60 40 60 VIN=2.7V 40 8.0V 10V 5.0V 6.0V 4.2V 3.3V 20 20 0 0 0.1 1 10 100 0.1 1000 1 10 100 Output Current2 I OUT2 (mA) Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 27 1000 XC9502 Series 2ch. Step-up / down DC/DC Controller ICs < 2ch Step-down DC/DC Controller > (6) Ripple Voltage vs. Output Current (Continued) FOSC=500kHz, VOUT2=3.3V FOSC=500kHz, VOUT2=3.3V L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 80 60 8.0V 10V 6.0V 40 5.0V VIN=4.2V 20 60 VIN=4.2V 5.0V 40 8.0V 6.0V 10V 20 0 0 0.1 1 10 100 0.1 1000 1 Output Current2 I OUT2 (mA) FOSC=500kHz, VOUT2=5.0V 100 1000 FOSC=500kHz, VOUT2=5.0V L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 10 Output Current2 I OUT2 (mA) L2=10µH(CDRH5D28), CL2=94µF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control Ripple Voltage2 (mV) Ripple Voltage2 (mV) PWM/PFM Switching Control 80 60 40 10V 8.0V VIN=6.0V 20 80 60 40 VIN=6.0V 8.0V 10V 20 0 0 0.1 1 10 100 1000 0.1 Output Current2 I OUT2 (mA) 1 10 100 Output Current2 I OUT2 (mA) * When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94µF (Tantalum) + 100µF (OS capacitor) 28 1000 XC9502 Series 2ch. Step-up / down DC/DC Controllers Typical Performance Characteristics (7) Supply Current vs. Supply Voltage (8) Supply Current 1-1 vs. Supply Voltage XC9502B092 (180kHz) XC9502B092 (180kHz) Supply Current 1-1 IDD1-1 (µA) Supply Current 1 IDD1 (µA) 350 Topr=85o C 25o C -40o C 300 250 200 150 100 50 0 0 2 4 6 8 250 Topr=85o C 25o C -40o C 200 150 100 50 0 0 10 (9) Supply Current 1-2 vs. Supply Voltage Supply Current 1-3 IDD1-3 (µA) Power Supply 1-2 IDD1-2 (µA) 150 100 50 0 2 4 6 8 350 250 200 150 100 50 0 10 0 4 6 8 10 (12) Supply Current 2 vs. Supply Voltage XC9502B092 (180kHz) XC9502B092 (180kHz) 250 Topr=85o C 25o C -40o C Supply Current 2 IDD2 (µA) Supply Current 1-4 IDD1-4 (µA) 2 Supply Voltage VDD (V) (11) Supply Current 1-4 vs. Supply Voltage 200 10 Topr=85o C 25o C -40o C 300 Supply Voltage VDD (V) 250 8 XC9502B092 (180kHz) Topr=85o C 25o C -40o C 0 6 (10) Supply Current 1-3 vs. Supply Voltage XC9502B092 (180kHz) 200 4 Supply Voltage VDD (V) Supply Voltage VDD (V) 250 2 150 100 50 0 Topr=85o C 25o C -40o C 200 150 100 50 0 0 2 4 6 8 10 0 Supply Voltage VDD (V) 2 4 6 8 Supply Voltage VDD (V) 29 10 XC9502 Series 2ch. Step-up / down DC/DC Controllers (13) Oscillation Frequency vs. Supply Voltage (14) Standby Current vs. Supply Voltage XC9502B092 (180kHz) 210 200 Topr=25OC 190 180 85OC 170 160 10 Standby Current ISTB (µA) Oscillation Frequency Fosc (kHz) XC9502B092 (180kHz) - 40OC 8 6 4 2 0 150 0 2 4 Topr=85o C 25o C -40o C 6 8 0 10 Supply Voltage VDD (V) (15) PWM1, 2 'H' 'L' Voltage vs. Supply Voltage EN1, 2 'H' 'L' Voltage VEN1, 2 (V) PWM1, 2 H' L' Voltage Vpwm1, 2 (V) -40OC 0.4 85OC Topr=25OC 0 0 2 4 6 8 8 10 0.8 0.6 -40OC 0.4 85o C o Topr=25 C 0.2 0 10 0 Supply Voltage VDD (V) 2 4 6 8 10 Supply Voltage VDD (V) (17) Maximum Duty Ratio 1 vs. Supply Voltage (18) PFM Duty Ratio 1, 2 vs. Supply Voltage XC9502B092 (180kHz) XC9502B092(180kHz) 40 85 PFM Duty Ratio 1, 2(%) Max. Duty Ratio 1 Maxdty 1 (%) 6 XC9502B092 (180kHz) 0.8 0.2 4 (16) EN1, 2 'H' 'L' Voltage vs. Supply Voltage XC9502B092 (180kHz) 0.6 2 Supply Voltage VDD (V) 80 75 70 Topr=85o C 25o C -40o C 65 Topr=85o C 25o C -40o C 35 30 25 20 60 0 2 4 6 8 0 10 2 4 6 8 Supply Voltage VDD (V) Supply Voltage VDD (V) 30 10 XC9502 Series 2ch. Step-up / down DC/DC Controllers (19) EXT 1, 2 High ON Resistance vs. Supply Voltage (20) EXT 1, 2 Low ON Resistance vs. Supply Voltage XC9502B092 (180kHz) 50 EXT1, 2 L ON Resistance (Ω) EXT1, 2 H ON Resistance (Ω) XC9502B092 (180kHz) Topr=85o C 25o C -40o C 40 30 20 10 0 0 2 4 6 8 50 Topr=85o C 25o C -40o C 40 30 20 10 0 10 0 Supply Voltage VDD (V) (21) Output Voltage vs. Ambient Temperature 8 10 1 Oscillation Starting Voltage VST2(V) Output Voltage VOUT(V) 6 XC9502B092 (180kHz,VOUT1=2.0V) L=22µH(CDRH5D28), CL=94µF(Tantalum) Tr:XP161A1265P, SD:CMS02 3.4 3.3 3.2 VIN=1.8V IOUT=200mA 3.1 4 (22) Oscillation Start-up Voltage vs. Ambient Temperature XC9502B093(300kHz) 3.5 2 Supply Voltage VDD (V) 0.8 0.6 0.4 0.2 3.0 0 -50 -20 10 40 70 100 -40 -20 Ambient Temperature Ta(0 C) 0 20 40 60 80 100 Ambient Temperature Ta(o C) (23) Operation Retention Voltage vs. Ambient Temperature (24) Operation Start-up Voltage vs. Ambient Temperature XC9502B092(180kHz,VOUT1=3.3V) L=22µH(CDRH5D28), CL=47µF(Tantalum) SD:MA2Q737, Tr:2SD1628G L=22µH(CDRH5D28), CL=47µF(Tantalum) SD:MA2Q737, Tr:2SD1628G 0.8 1.2 Operation Start-up Voltage VST1(V) Operation Retention Voltage VHLD (V) XC9502B092(180kHz,VOUT1=3.3V) 0.6 0.4 0.2 IOUT=1mA 1 0.8 0.6 0.4 IOUT=1mA 0.2 0 0 -40 -20 0 20 40 60 -40 -20 80 100 0 20 40 60 80 100 Ambient Temperature Ta(o C) Ambient Temperature Ta (o C) 31 XC9502 Series 2ch. Step-up / down DC/DC Controllers (25) Soft-Start Time 1, 2 vs. Supply Voltage Soft-Start Time 1, 2 TSS1, 2(msec) XC9502B092 (180kHz) 25 20 15 10 5 0 0 2 4 6 8 10 Supply Voltage VDD (V) 32 XC9502 Series 2ch. Step-up / down DC/DC Controllers Load Transient Response [1 channel : Step-up DC/DC Controller] < VOUT1 = 3.3V, VIN = 2.0V IOUT1, 2 =100µA Q 100mA > PWM Control FOSC=180kHz, VOUT1=3.3V FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100µA→ 100mA VIN=2.0V, IOUT1=100mA→ 100µA CH1 3.3V CH1 3.3V 100mA 100mA 100µA CH2 100µA CH2 10msec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1 , 50mA/div 200µsec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1 , 50mA/div PWM/PFM Switching Control CH1 FOSC=180kHz, VOUT1=3.3V FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100µA→ 100mA VIN=2.0V, IOUT1=100mA→ 100µA 3.3V 3.3V CH1 100mA CH2 100µA 100mA 100µA CH2 10msec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1 , 50mA/div 200µsec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1 , 50mA/div 33 XC9502 Series 2ch. Step-up / down DC/DC Controllers ICs Load Transient Response [1 channel : Step-up DC/DC Controller] < VOUT1 = 3.3V, VIN = 2.0V IOUT1, 2 =10mA Q 100mA > PWM Control FOSC=180kHz, VOUT1=3.3V FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=10mA→ 100mA VIN=2.0V, IOUT1=100mA→ 10mA CH1 3.3V CH1 3.3V 100mA 100mA CH2 10mA 10mA CH2 200µsec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1, 50mA/div 200µsec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1, 50mA/div PWM/PFM Switching Control FOSC=180kHz, VOUT1=3.3V FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA→ 10mA VIN=2.0V, IOUT1=10mA→ 100mA CH1 3.3V CH1 3.3V 100mA CH2 10mA 100mA CH2 10mA 200µsec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1, 50mA/div 200µsec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1, 50mA/div 34 XC9502 Series 2ch. Step-up / down DC/DC Controllers ICs Load Transient Response [1 channel : Step-up DC/DC Controller] <PWM Control D PWM/PFM Switching Control> FOSC=180kHz, VOUT1=3.3V FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=1mA PWM1 ’L'J’H’ VIN=2.0V, IOUT1=1mA PWM1 ’H’J’L’ CH1 3.3V CH1 3.3V 0.65V 0.65V 0V CH2 CH2 1msec/div CH1:VOUT1, AC-COUPLED ,10mV/div CH2:PWM1, 0.5V/div 1msec/div CH1:VOUT1 , AC-COUPLED ,10mV/div CH2:PWM1 , 0.5V/div <Soft Start Wave Form> FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA EN1 ’L’J’H’ CIN=47µF 3.3V CH1 300mA CH2 0.65V CH3 4ms/div CH1:VOUT1, 1.0V/div CH2:IIN1, 100mA/div CH3:EN1 , 0.5V/div 0V * EN2=GND 35 XC9502 Series 2ch. Step-up / down DC/DC Controllers ICs Load Transient Response [2 channel : Step-down DC/DC Controller] < VOUT2=3.3V, VIN=5.0V IOUT2=100µA Q 300mA> PWM Control FOSC=300kHz, VOUT2=3.3V FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=100µA→ 300mA VIN=5.0V, IOUT2=300mA→100µA CH1 3.3V CH1 3.3V 300mA 100µA CH2 300mA 100µA CH2 200µsec/div CH1:VOUT2 , AC-COUPLED, 100mV/div CH2:IOUT2 , 150mA/div 10msec/div CH1:VOUT2 , AC-COUPLED, 50mV/div CH2:IOUT2 , 150mA/div PWM/PFM Switching Control FOSC=300kHz, VOUT2=3.3V FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=100µA→ 300mA VIN=5.0V, IOUT2=300mA→100µA 3.3V CH1 CH1 3.3V 300mA 300mA 100µA 100µA CH2 CH2 10msec/div CH1:VOUT2 , AC-COUPLED, 100mV/div CH2:IOUT2 , 150mA/div 200µsec/div CH1:VOUT2 , AC-COUPLED, 100mV/div CH2:IOUT2 , 150mA/div 36 XC9502 Series 2ch. Step-up / down DC/DC Controllers ICs Load Transient Response [2 channel : Step-down DC/DC Controller] < VOUT2=3.3V, VIN=5.0V IOUT2=10mA Q 300mA> PWM Control FOSC=300kHz, VOUT2=3.3V FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=10mA→ 300mA VIN=5.0V, IOUT2=300mA→10mA CH1 3.3V 3.3V CH1 300mA CH2 10mA 300mA 10mA CH2 400µsec/div CH1:VOUT2 , AC-COUPLED, 50mV/div CH2:IOUT2 , 150mA/div 200µsec/div CH1:VOUT2 , AC-COUPLED, 50mV/div CH2:IOUT2 , 150mA/div PWM/PFM Switching Control FOSC=300kHz, VOUT2=3.3V FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=10mA→ 300mA CH1 VIN=5.0V, IOUT2=300mA→10mA 3.3V 3.3V CH1 300mA 10mA CH2 300mA 10mA CH2 200µsec/div CH1:VOUT2 , AC-COUPLED, 100mV/div CH2:IOUT2 , 150mA/div 200µsec/div CH1:VOUT2 , AC-COUPLED, 50mV/div CH2:IOUT2 , 150mA/div 37 XC9502 Series 2ch. Step-up / down DC/DC Controllers ICs Load Transient Response [2 channel : Step-down DC/DC Controller] < VOUT2=0.9V, VIN=3.3V IOUT2=100µA Q 300mA> PWM Control FOSC=300kHz, VOUT2=0.9V FOSC=300kHz, VOUT2=0.9V IN=3.3V, IOUT2=100µA→ 300mA VIN=3.3V, IOUT2=300mA→100µA CH1 0.9V CH1 0.9V 300mA CH2 300mA 100µA CH2 100µA 200µsec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div 4msec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div PWM/PFM Switching Control FOSC=300kHz, VOUT2=0.9V FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=100µA→ 300mA VIN=3.3V, IOUT2=300mA→100µA 0.9V CH1 CH1 0.9V 300mA 300mA CH2 100µA CH2 100µA 4msec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div 200µsec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div 38 XC9502 Series 2ch. Step-up / down DC/DC Controllers ICs Load Transient Response [2 channel : Step-down DC/DC Controller] < VOUT2=0.9V, VIN=3.3V IOUT2=10mA Q 300mA> PWM Control FOSC=300kHz, VOUT2=0.9V FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=300mA→ 10mA VIN=3.3V, IOUT2=10mA→ 300mA CH1 0.9V 0.9V CH1 300mA 300mA CH2 10mA 10mA CH2 100µsec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div 100µsec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div PWM/PFM Switching Control FOSC=300kHz, VOUT2=0.9V FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=10mA→ 300mA VIN=3.3V, IOUT2=300mA→ 10mA CH1 0.9V CH1 0.9V 300mA 300mA 10mA CH2 CH2 10mA 200µsec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div 200µsec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div 39 XC9502 Series 2ch. Step-up / down DC/DC Controllers ICs Load Transient Response [2 channel : Step-down DC/DC Controller] <PWM Control D PWM/PFM Switching Control> FOSC=300kHz, VOUT2=3.3V FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=5mA PWM2 ’L’J’H’ VIN=5.0V, IOUT2=5mA PWM2 ’H’J’L’ CH1 3.3V CH1 3.3V 0.65V CH2 0.65V CH2 0V 0V 200µsec/div CH1:VOUT2, AC-COUPLED ,20mV/div CH2:PWM2, 0.5V/div 400µsec/div CH1:VOUT2 , AC-COUPLED ,10mV/div CH2:PWM2 , 0.5V/div <Soft Start Wave Form> FOSC=300kHz, VOUT2=3.3V FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=300mA EN2 ’L’→’H’ CIN=47µF VIN=5.0V, IOUT2=100mA EN2 ’L’→’H’ CIN=47µF 3.3V 3.3V CH1 CH1 200mA 75mA CH2 CH2 0.65V 0.65V CH3 CH3 4ms/div CH1:VOUT2 , 2.0V/div CH2:IIN2, 50mA/div CH3:EN2 , 0.5V/div 4ms/div CH1:VOUT2 , 2.0V/div CH2:IIN2, 100mA/div CH3:EN2 , 0.5V/div * EN1=GND 40