XC9502 Series ETR0702_001 2ch.Step-Up/Down DC/DC Controller ICs ☆GO-Compatible ■ GENERAL DESCRIPTION XC9502 series is 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 (step-down 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 and 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. 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 (Output1) and offers protection against in-rush currents when the power is switched. This also prevents voltage overshoot. ■APPLICATIONS ●PDAs ●Palmtop computers ●Portable audio ●Various power supplies ■FEATURES 2ch DC/DC Controller <Output 1: Step-Up DC/DC Controller> Output Voltage Range Output Current : 1.5V ~ 30V (set by FB1 pin) : More than 300mA (VIN=1.8V,VOUT=3.3V) : 80% (TYP.) Maximum Duty Cycle : 83% (TYP.) High Efficiency <Output 2: Step-Down DC/DC Controller> Output Voltage Range : 0.9V ~ 6.0V (set by FB2 pin) Output Current : ≦1000mA (VIN=3.3V, VOUT=1.8V) : 100% (TYP.) Maximu Duty Cycle : 92% (TYP.) High Efficiency <Common> Supply Voltage Range Input Voltage Range Oscillation Frequency Control Method Stand-by Function Soft-Start Time Package ■TYPICAL APPLICATION CIRCUIT : 2.0V ~ 10.0V : 0.9V ~ 10.0V : 180kHz (±15%) * 300kHz, 500kHz custom : PWM or PWM/PFM selectable : 3.0μF (MAX.) : 10ms (internally set) : MSOP-10, USP-10 ■TYPICAL PERFORMANCE CHARACTERISTICS <XC9502B092A Input : 2 cell, VOUT①: 3.3V, VOUT②: 1.8V > 1/43 XC9502 Series ■PIN CONFIGURATION 1 EX T1 EX T2 1 0 2 VD D GN D 9 3 FB1 F B2 8 4 PW M1 EXT2 10 1 EXT1 GND 9 2 VDD FB2 8 3 FB1 PW M2 7 PWM2 7 EN 2 6 EN2 6 5 E N1 M MSOP-10 SO P -1 0 (TOP VIEW) (TO P VIE W ) 4 PWM1 5 EN1 USP-10 (BOTTOM VIEW) ■PIN ASSIGNMENT PIN NUMBER PIN NAME FUNCTIONS 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 P-ch Power MOSFET Gate> Channel 1: External Transistor Drive Pin <Connected to N-ch Power MOSFET Gate> ■PRODUCT CLASSIFICATION ●Ordering Information XC9502①②③④⑤⑥ DESIGNATOR DESCRIPTION SYMBOL ① Type of DC/DC Controller B : Standard type (10 pin) ② ③ Output Voltage 09 : FB products → ②=0, ③=9 fixed ④ Oscillation Frequency ⑤ Package 2 3 5 A D : 180kHz : 300kHz (custom) : 500kHz (custom) : MSOP-10 : USP-10 ⑥ Device Orientation R : Embossed tape, standard feed L : Embossed tape, reverse feed 2/43 DESCRIPTION XC9502 Series ■BLOCK DIAGRAM ■ABSOLUTE MAXIMUM RATINGS Ta=25℃ PARAMETER SYMBOL RATINGS UNITS VDD Pin Voltage VDD - 0.3 ~ 12.0 V FB1, 2 Pin Voltage VFB - 0.3 ~ 12.0 V EN1, 2 Pin Voltage VEN - 0.3 ~ 12.0 V PWM1, 2 Pin Voltage VPWM - 0.3 ~ 12.0 V EXT1, 2 Pin Voltage VEXT - 0.3 ~ VDD + 0.3 V EXT1, 2 Pin Current IEXT ± 100 mA Power Dissipation MSOP-10 USP-10 Operating Temperature Range Storage Temperature Range Pd Topr Tstg 150 150 mW - 40 ~ + 85 O C - 55 ~ + 125 O C * Voltage is all ground standardized. 3/43 XC9502 Series ■ELECTRICAL CHARACTERISTICS XC9502B092 (FOSC=180kHz) Common Characteristics PARAMETER Supply Voltage (*1) Maximum Input Voltage Output Voltage Range (*3) Supply Current 1 Supply Current 1-1 Supply Current 1-2 Supply Current 1-3 Supply Current 1-4 Supply Current 2 Stand-by Current Oscillation Frequency EN1, 2 "High" Voltage EN1, 2 "Low" Voltage EN1, 2 "High" Current EN1, 2 "Low" Current PWM1, 2 "High" Current PWM1, 2 "Low" Current FB1, 2 "High" Current FB1, 2 "Low" Current SYMBOL VDD VIN VOUTSET IDD1 IDD1-1 IDD1-2 IDD1-3 IDD1-4 IDD2 ISTB FOSC VENH VENL IENH IENL IPWMH IPWML IFBH VFBL CONDITIONS VDD≧2.0V, IOUT1, 2=1mA VDD≠VOUT1 VIN≧0.9V, IOUT1, 2=1mA VDD=VOUT1 FB1, 2=0V EN1=3.0V, EN2=0V, FB1=0V EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V FB1=1.0V, FB2=0V FB1, 2=1.0V Same as IDD1, EN1=EN2=0V Same as IDD1 FB1, 2=0V FB1, 2=0V EN1, 2=3.0V EN1, 2=0V, FB1, 2=3.0V FB1, 2=3.0V, PWM=3.0V FB1, 2=3.0V, PWM=0V FB1, 2=3.0V FB1, 2=1.0V VOUT1 VOUT2 VOUT1 VOUT2 Ta=25℃ MIN. 2.0 10.0 0.9 0.9 2.0 0.9 − − − − − − − 153 0.65 − − − − − − − TYP. − − − − − − 70 60 50 70 60 60 1.0 180 − − − − − − − − MAX. 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 UNITS V V V V V V μA μA μA μA μA μA μA kHz V V μA μA μA μA μA μA CIRCUIT MIN. 0.882 TYP. 0.900 MAX. 0.918 UNITS V CIRCUIT − − 0.9 V ② − − 75 − 22 − − 80 − 30 2.0 0.8 85 0 38 V V % % % − 85 − % ⑤ 5.0 − − 0.65 − 10.0 28 22 − − 20.0 47 30 − 0.20 ms Ω Ω V V ⑤ MIN. 0.882 − 100 − 22 TYP. 0.900 − − − 30 MAX. 0.918 2.0 − 0 38 UNITS V V % % % CIRCUIT − 92 − % ⑧ 5.0 − − 0.65 − 10.0 28 22 − − 20.0 47 30 − 0.20 ms Ω Ω V V ⑧ ① ① ① ② ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V Output 1 Characteristics: Step-Up Controller PARAMETER FB1 Voltage SYMBOL VFB1 Operation Start Voltage1 (*2) VST1-1 Oscillation Start-up Voltage1 Maximum Duty Ratio1 Minimum Duty Ratio1 PFM Duty Ratio1 VST2-1 MAXDTY1 MINDTY1 PFMDTY1 Efficiency 1 (*4) EFFI1 Soft-Start Time1 EXT1 "High" ON Resistance EXT1 "Low" ON Resistance PWM1 "High" Voltage PWM1 "Low" Voltage TSS1 REXTBH1 REXTBL1 VPWMH1 VPWMH1 CONDITIONS VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628 IOUT1=1.0mA, RFB11=200kΩ, RFB12=75kΩ VDD≠VOUT1: IOUT1=1mA FB1=0V Same as IDD1 Same as IDD2 No Load, VPWM1=0V IOUT1=30mA, N-ch MOSFET: XP161A1355P VOUT1×0.95V, EN1=0V→0.65V FB1=0, EXT1=VDD-0.4V EN1=FB2=0V, EXT1=0.4V No Load No Load Ta=25℃ ④ ① ③ ③ ③ ⑤ ⑥ ⑥ ⑤ ⑤ Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V Ta=25℃ Output 2 Characteristics: Step-Down Controller PARAMETER FB 2 Voltage Minimum Operating Voltage Maximum Duty Ratio 2 Minimum Duty Ratio 2 PFM Duty Ratio 2 SYMBOL VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 Efficiency 2 (*4) EFFI2 Soft-Start Time 2 EXT2 "High" ON Resistance EXT2 "Low" ON Resistance PWM2 "High" Voltage PWM2 "Low" Voltage TSS2 REXTBH2 REXTBL2 VPWMH2 VPWMH2 CONDITIONS VIN=3.0V, IOUT2=10mA Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA P-ch MOSFET: XP162A12A6P VOUT2×0.95V, EN2=0V→0.65V EN2=0, EXT2=VDD-0.4V FB2=0V, EXT2=0.4V No Load No Load ⑦ ① ③ ③ ⑧ ⑥ ⑥ ⑧ ⑧ Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V NOTE: *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 VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once output 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 external components. *4 : EFFI={ [ (Output voltage) × (Output current) ] / [ (Input voltage) × (Input current) ] } ×100 4/43 XC9502 Series ■ELECTRICAL CHARACTERISTICS (Continued) XC9502B093 SYMBOL VDD VIN Output Voltage Range (*3) Supply Current 1 Supply Current 1-1 Supply Current 1-2 Supply Current 1-3 Supply Current 1-4 Supply Current 2 Stand-by Current Oscillation Frequency EN1, 2 "High" Voltage EN1, 2 "Low" Voltage EN1, 2 "High" Current EN1, 2 "Low" Current PWM1, 2 "High" Current PWM1, 2 "Low" Current FB1, 2 "High" Current FB1, 2 "Low" Current VOUTSET IDD1 IDD1-1 IDD1-2 IDD1-3 IDD1-4 IDD2 ISTB FOSC VENH VENL IENH IENL IPWMH IPWML IFBH VFBL Ta=25℃ (FOSC=300kHz) Common Characteristics PARAMETER Supply Voltage (*1) Maximum put Voltage CONDITIONS VDD≧0V, IOUT1, 2=1mA VDD≠VOUT1 VIN≧0.9V, IOUT1, 2=1mA VDD=VOUT1 FB1, 2=0V EN1=3.0V, EN2=0V, FB1=0V EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V FB1=1.0V, FB2=0V FB1, 2=1.0V Same as IDD1, EN1=EN2=0V Same as IDD1 FB1, 2=0V FB1, 2=0V EN1, 2=3.0V EN1, 2=0V, FB1, 2=3.0V FB1, 2=3.0V, PWM=3.0V FB1, 2=3.0V, PWM=0V FB1, 2=3.0V VOUT1 VOUT2 VOUT1 VOUT2 FB1, 2=1.0V MIN. 2.0 10.0 0.9 0.9 2.0 0.9 − − − − − − − 255 0.65 − − − − − − − TYP. − − − − − − 100 80 60 100 70 70 1.0 300 − − − − − − − − MAX. 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 UNITS V V V V V V μA μA μA μA μA μA μA kHz V V μA μA μA μA μA μA CIRCUIT MIN. 0.882 TYP. 0.900 MAX. 0.918 UNITS V CIRCUIT − − 0.9 V ② − − 75 − 22 − − 80 − 30 2.0 0.8 85 0 38 V V % % % − 85 − % ⑤ 5.0 − − 0.65 − 10.0 28 22 − − 20.0 47 30 − 0.20 ms Ω Ω V V ⑤ TYP. 0.900 − − − 30 MAX. 0.900 2.0 − 0 38 UNITS V V % % % CIRCUIT − % ⑧ 20.0 47 30 − 0.20 ms Ω Ω V V ⑧ ① ① ① ② ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V Output 1 Characteristics: Step-Up Controller PARAMETER FB1 Voltage Operation Start Voltage SYMBOL VFB1 (*2) VST1-1 Oscillation Start Voltage2 Maximum Duty Ratio Minimum Duty Ratio PFM Duty Ratio VST2-1 MAXDTY1 MINDTY1 PFMDTY1 Efficiency (*4) EFFI1 Soft-Start Time EXT1 "High" ON Resistance EXT1 "Low" ON Resistance PWM1 "High" Voltage PWM1 "Low" Voltage TSS1 REXTBH1 REXTBL1 VPWMH1 VPWMH1 CONDITIONS VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628 IOUT1=1.0mA, RFB11=200kΩ, RFB12=75kΩ VDD≠VOUT1: IOUT1=1mA FB1=0V Same as IDD1 Same as IDD2 No Load, VPWM1=0V IOUT=130mA N-ch MOSFET: XP161A1355P VOUT1×0.95V, EN1=0V→0.65V FB1=0, EXT1=VDD-0.4V EN1=FB2=0V, EXT1=0.4V No Load No Load Ta=25℃ ④ ① ③ ③ ③ ⑤ ⑥ ⑥ ⑤ ⑤ Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V Output 2 Characteristics: Step-Down Controller PARAMETER FB2 Voltage Minimum Operating Voltage Maximum Duty Ratio 2 Minimum Duty Ratio 2 PFM Duty Ratio 2 SYMBOL VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 CONDITIONS VIN=3.0V, IOUT2=10mA Ta=25℃ MIN. 0.900 − 100 − 22 Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA Efficiency 2 (*4) EFFI2 − 92 P-ch MOSFET: XP162A12A6P VOUT2×0.95V, EN2=0V→0.65V Soft-Start Time 2 TSS2 5.0 10.0 − EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V 28 − EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V 22 PWM2 "High" Voltage VPWMH2 No Load 0.7 − − − PWM2 "Low" Voltage No Load VPWMH2 Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V ⑦ ① ③ ③ ⑧ ⑥ ⑥ ⑧ ⑧ NOTE: *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 VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once output 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 external components. *4 : EFFI={ [ (output voltage) × (output current) ] / [ (input voltage) × (input current) ] } × 100 5/43 XC9502 Series ■ELECTRICAL CHARACTERISTICS (Continued) XC9502B095 (FOSC=500kHz) Common Characteristics PARAMETER Supply Voltage (*1) Maximum Input Voltage MAX. 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 UNITS V V V V V V μA μA μA μA μA μA μA kHz V V μA μA μA μA μA μA CIRCUIT CONDITIONS MIN. TYP. VDD=3.0V, VIN=1.5V, IOUT1=10mA 0.882 0.900 Using Tr: 2SD1628 − − IOUT1=1.0mA, RFB11=200kΩ, RFB12=75kΩ Operation Start Voltage 1 (*2) VST1-1 VDD≠VOUT1: IOUT1=1mA − − − − Oscillation Start Voltage 2 VST2-1 FB1=0V Maximum Duty Ratio 1 MAXDTY1 Same as IDD1 75 80 − − Minimum Duty Ratio 1 MINDTY1 Same as IDD2 PFM Duty Ratio 1 PFMDTY1 No Load, VPWM1=0V 22 30 IOUT=130mA Efficiency 1 (*4) EFFI1 − 83 N-ch MOSFET: XP161A1355P V OUT1 ×0.95V, EN1=0V→0.65V Soft-Start Time 1 TSS1 5.0 10.0 − EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V 28 − EXT1 "Low" ON Resistance REXTBL1 EN1=FB2=0V, EXT1=0.4V 22 − PWM1 "High" Voltage No Load 0.65 VPWMH1 PWM1 "Low" Voltage − − No Load VPWMH1 Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V MAX. 0.918 UNITS V CIRCUIT 0.9 V ② 2.0 0.8 85 0 38 V V % % % − % ⑤ 20.0 47 30 − 0.20 ms Ω Ω V V ⑤ MAX. 0.918 2.0 − 0 38 UNITS V V % % % CIRCUIT − % ⑧ 20.0 47 30 − 0.20 ms Ω Ω V V ⑧ VOUTSET Supply Current 1 Supply Current 1-1 Supply Current 1-2 Supply Current 1-3 Supply Current 1-4 Supply Current 2 Stand-by Current Oscillation Frequency EN1, 2 "High" Voltage EN1, 2 "Low" Voltage EN1, 2 "High" Current EN1, 2 "Low" Current PWM1, 2 "High" Current PWM1, 2 "Low" Current FB1, 2 "High" Current FB1, 2 "Low" Current CONDITIONS VDD≧2.0V, IOUT1, 2=1mA VDD≠VOUT1 VIN≧0.9V, IOUT1, 2=1mA VDD=VOUT1 FB1, 2=0V EN1=3.0V, EN2=0V, FB1=0V EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V FB1=1.0V, FB2=0V FB1, 2=1.0V Same as IDD1, EN1=EN2=0V Same as IDD1 FB1, 2=0V FB1, 2=0V EN1, 2=3.0V EN1, 2=0V, FB1, 2=3.0V FB1, 2=3.0V, PWM=3.0V FB1, 2=3.0V, PWM=0V FB1, 2=3.0V FB1, 2=1.0V IDD1 IDD1-1 IDD1-2 IDD1-3 IDD1-4 IDD2 ISTB FOSC VENH VENL IENH IENL IPWMH IPWML IFBH VFBL Unless otherwise stated, VDD=3.0V, PWM1, 2=3.0V, EN1, 2 =3.0V VOUT1 VOUT2 VOUT1 VOUT2 MIN. 2.0 10.0 0.9 0.9 2.0 0.9 − − − − − − − 425 0.65 − − − − − − − Ta=25℃ TYP. − − − − − − 130 110 80 130 90 90 1.0 500 − − − − − − − − Output Voltage Range (*3) SYMBOL VDD VIN SYMBOL VFB1 SYMBOL VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 CONDITIONS VIN=3.0V, IOUT2=10mA ① ② ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ③ ④ ① ③ ③ ③ ⑤ ⑥ ⑥ ⑤ ⑤ Ta=25℃ Output 2 Characteristics: Step-Down Controller PARAMETER FB 2 Voltage Minimum Operating Voltage Maximum Duty Ratio 2 Minimum Duty Ratio 2 PFM Duty Ratio 2 ① Ta=25℃ Output 1 Characteristics: Step-Up Controller PARAMETER FB 1 Voltage ① MIN. 0.882 − 100 − 22 TYP. 0.900 − − − 30 Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA Efficiency 2 (*4) EFFI2 − 91 P-ch MOSFET: XP162A12A6P VOUT2×0.95V, EN2=0V→0.65V Soft-Start Time 2 TSS2 5.0 10.0 − EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V 28 − EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V 22 PWM2 "High" Voltage VPWMH2 No Load 0.65 − PWM2 "Low" Voltage − − No Load VPWMH2 Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V ⑦ ① ③ ③ ⑧ ⑥ ⑥ ⑧ ⑧ NOTE: *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 VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once output 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 external components. *4 : EFFI={ [ (output voltage) × (output current) ] / [ (input voltage) × (input current) ] } × 100 6/43 XC9502 Series ■OPERATIONAL EXPLANATION 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 next page). 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-ch 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 3.0μA. When the EN1 or EN2 pin's voltage is 0.65V or more, the mode will be chip enable and operations will recommence. With soft-start, 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 VDD<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 VDD>2.0V or more. With power supply voltages of VDD>2.0V, the start-up sequence for EN1 and EN2 will not be required. 7/43 XC9502 Series ■OPERATIONAL EXPLANATION (Continued) <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 1MΩor 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 (V) 1.0 1.5 1.8 2.0 2.2 RFB11 (kΩ) 30 220 220 330 390 RFB12 (kΩ) 270 330 220 270 270 CFB1 (pF) 430 62 62 39 33 VOUT (V) 2.5 2.7 3.0 3.3 5.0 RFB11 (kΩ) 390 360 560 200 82 RFB12 (kΩ) 220 180 240 75 18 CFB1 (pF) 33 33 24 62 160 VOUT (V) 8.0 12.0 - RFB11 (kΩ) 120 160 - RFB12 (kΩ) 15 13 - CFB1 (pF) 100 82 - The same method can be also adopted for channel two (output 2). [External Components] Output 1 (Step-Up DC/DC controller) Tr 1 : * MOSFET XP161A1355PR (N-ch Power MOSFET, TOREX) 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: L 1: CL1 : MA2Q737 (Schottky, MATSUSHITA) CMS02 (Schottky, TOSHIBA) 10μH (CDRH5D28, SUMIDA, FOSC = 500kHz) 15μH (CDRH5D28, SUMIDA, FOSC = 300kHz) 22μH (CDRH5D28, SUMIDA, FOSC = 180kHz) 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) Tr : RB1 : CB1 : 8/43 * NPN MOSFET 2SD1628 (SANYO) 500Ω ( Adjust in accordance with load & Tr.'s HFE.) Set according to the equation below: RB1 ≦ (VIN-0.7) x hFE / IC-REXTBH 2200pF (Ceramic) Set according to the equation below: CB1 ≦ (2πx RB2 x FOSC x 0.7) Output 2 (Step-Down DC/DC controller) Tr 2 : * MOSFET XP162A12A6P (P-ch Power MOSFET, TOREX) 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 (CDRH5D28, SUMIDA, FOSC = 500kHz) 22μH (CDRH5D28, SUMIDA, FOSC = 300kHz) 47μH (CDRH5D28, SUMIDA, 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. C=(CL standard value)×(IOUT2 (mA)/500mA×VOUT2/VIN Tr : RB1 : CB1 : * PNP MOSFET 2SA1213 (SANYO) 500Ω ( Adjust in accordance with load & Tr.'s HFE.) Set according to the equation below: RB2 ≦ (VIN-0.7) x hFE / IC-REXTBH 2200pF (Ceramic) Set according to the equation below: CB2 ≦ (2πx RB2 x FOSC x 0.7) XC9502 Series ■TEST CIRCUITS Circuit Circuit ⑤ 5 Circuit ① 1 Circuit SBD1 1 EXT1 2200pF 2 VDD 1μF CL1 A 2200pF NPN Tr1 CFB1 3 FB1 4 PWM1 Nch MOSFET1 510Ω A EXT2 10 1 EXT1 200kΩ RFB21 SBD2 GND 9 62pF CFB2 V FB2 8 CL2 CL1 RL RL2 2 VDD GND 9 3 FB1 FB2 8 SBD1 VIN 2200pF 1 EXT1 2200pF CFB1 2 VDD VOUT2 CIN 510Ω NPN Tr1 L2 PNP Tr2 L1 VOUT1 1 EXT1 510Ω EXT2 10 GND 9 2 VDD RFB21 SBD2 CFB2 3 FB1 Rp CL1 3 FB1 4 PWM1 FB2 8 CL2 RL2 4 PWM1 OSC PWM2 7 1μF RFB22 RFB12 5 EN1 VPW M1 VDD 5 EN1 EXT2 10 GND 9 A FB2 8 PWM2 7 VPW M2 EN2 6 VFB1 VFB2 VEN2 VEN1 Circuit⑦ 7 Circuit Circuit ③ 3 Circuit Pch MOSFET2 1 EXT1 A 2 VDD GND 9 3 FB1 FB2 8 A A EN2 6 1 EXT1 2 VDD 3 FB1 A A 4 PWM1 5 EN1 VPW M1 VEN1 VEN2 VPW M2 EXT2 10 SBD2 GND 9 V FB2 8 CL2 OSC A 1μF VFB1 VOUT2 A VIN CIN PWM2 7 5 EN1 L2 A EXT2 10 4 PWM1 A RL PWM2 7 EN2 6 VFB2 Circuit Circuit ④4 Circuit Circuit⑧ 8 L1 Pch MOSFET2 Nch MOSFET1 L2 VOUT2 A 1 EXT1 SBD1 CL1 V VEXT2 EN2 6 VEXT1 VOUT1 EN2 6 VEN1 Circuit⑥ 6 Circuit Circuit ② 2 Circuit VDD CIN PWM2 7 5 EN1 OSC EN2 6 VPW M1 OSC VIN 75kΩ RFB22 RFB11 EXT2 10 4 PWM1 PWM2 7 RFB12 5 EN1 L1 VOUT1 VOUT2 CIN VIN 510Ω RFB11 SBD1 L2 PNP Tr2 L1 VOUT1 2 VDD CIN RL 3 FB1 4 PWM1 EXT2 10 GND 9 FB2 8 PWM2 7 A VIN VIN CIN 1 EXT1 2 VDD 3 FB1 4 PWM1 EXT2 10 GND 9 FB2 8 SBD2 62pF 200kΩ V CL2 RL PWM2 7 75kΩ VDD 5 EN1 EN2 6 5 EN1 EN2 6 1μF 9/43 XC9502 Series ■EXTERNAL COMPONENTS USED FOR TEST CIRCUITS Circuit ①, ② L1, L2: SD1, SD2: CL1, CL2: CIN: NPN Tr1: PNP Tr1: RFB: CFB: 22μH (CDRH5D28, SUMIDA) 15μH (CDRH5D28, SUMIDA) 10μH (CDRH5D28, SUMIDA) 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: fxfb=1/(2 x π x CFB1 x RFB11) = 1kHz ~ 50kHz (12kHz usual) fxfb=1/(2 x π x CFB2 x RFB21) = 1kHz ~ 50kHz (12kHz usual) Circuit ④ L1: SD1: CL1: CIN: N-ch MOSFET1: 22μH (CDRH5D28, SUMIDA) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A1355P (TOREX) Circuit ⑤ L1: SD1: CL1: CIN: N-ch MOSFET1: 22μH (CDRH5D28, SUMIDA) 15μH (CDRH5D28, SUMIDA) 10μH (CDRH5D28, SUMIDA) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A1355P (TOREX) Circuit ⑦ L1: SD1: CL1: CIN: P-ch MOSFET2: 22μH (CDRH5D28, SUMIDA) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP162A12A6P (TOREX) Circuit ⑧ L2: 22μH (CDRH5D28, SUMIDA) 15μH (CDRH5D28, SUMIDA) 10μH (CDRH5D28, SUMIDA) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP162A12A6P (TOREX) SD2: CL2: CIN: P-ch MOSFET2: 10/43 : XC9502B092A : XC9502B093A : XC9502B095A : XC9502B092A : XC9502B093A : XC9502B095A : XC9502B092A : XC9502B093A : XC9502B095A XC9502 Series ■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. your operating conditions. Check waveforms at EXT under 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 ratio 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 external components within the limits of their ratings. 11/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS < 1ch Step-Up DC/DC Controller > (1) Output Voltage vs. Output Current FOSC=180kHz, VOUT1= 1.5V 1.7 L1=22μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 2.7 PWM/PFM Switching Control PWM Control 1.6 PWM/PFM Switching Control PWM Control 2.6 Output Voltage1 V OUT1 (V) Output Voltage1 V OUT1 (V) FOSC=180kHz, VOUT1= 2.5V L1=22μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 1.5 VIN=0.9V 1.4 1.2V 1.3 1.2 1.5V 2.5 VIN=0.9V 2.4 1.2V 2.3 2.2 0.1 1 10 100 1000 0.1 1 Output Current 1 IOUT1 (mA) FOSC=180kHz, VOUT1= 3.3V PWM/PFM Switching Control PWM Control 2.7V PWM/PFM Switching Control PWM Control 5.1 3.3 VIN=0.9V 3.2 1000 L1=22μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 5.2 Output Voltage1 V OUT1 (V) Output Voltage1 V OUT1 (V) 3.4 100 FOSC=180kHz, VOUT1= 5.0V L1=22μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 3.5 10 Output Current 1 IOUT1 (mA) 1.2V,1.5V 3.1 3.0 4.2V 5.0 VIN=1.5V 4.9 2.7V 3.3V 4.8 4.7 0.1 1 10 100 1000 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA) Output Current 1 IOUT1 (mA) FOSC=180kHz, VOUT1= 8.0V L1=22μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1265P 8.2 5.0V PWM/PFM Switching Control PWM Control Output Voltage1 V OUT1 (V) 8.1 8.0 VIN=3.3V 4.2V 7.9 7.8 7.7 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA) Dotted Arrowhead 12/43 PWM/PFM Switching Control XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 1ch Step-Up DC/DC Controller > (1) Output Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT1= 2.5V PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 1.5V 2.6 2.7V 3.4 2.5 2.4 L1=15μH(CDRH5D28), CL1=94μF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 3.5 Output Voltage1 V OUT1 (V) 2.7 Output Voltage1 V OUT1 (V) FOSC=300kHz, VOUT1= 3.3V L1=15μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P VIN=0.9V 1.2V 2.3 2.2 3.3 VIN=0.9V 3.2 1.2V 3.0 0.1 1 10 100 1000 0.1 1 Output Current 1 IOUT1 (mA) 1000 L1=10μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 2.7 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 3.3V 4.2V 5.0 VIN=1.2V 4.9 2.7V 1.5V 4.8 2.6 Output Voltage1 V OUT1 (V) 5.1 Output Voltage1 V OUT1 (V) 100 FOSC=500kHz, VOUT1= 2.5V L1=15μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 5.2 10 Output Current 1 IOUT1 (mA) FOSC=300kHz, VOUT1= 5.0V 4.7 1.5V 2.5 VIN=0.9V 2.4 1.2V 2.3 2.2 0.1 1 10 100 1000 0.1 1 Output Current 1 IOUT1 (mA) PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 4.2V Output Voltage1 V OUT1 (V) 5.1 1.5V 3.3 VIN=0.9V 1000 L1=10μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 5.2 2.7V 3.4 3.2 100 FOSC=500kHz, VOUT1= 5.0V L1=10μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 3.5 10 Output Current 1 IOUT1 (mA) FOSC=500kHz, VOUT1= 3.3V Output Voltage1 V OUT1 (V) 1.5V 3.1 1.2V 3.1 3.3V 5.0 4.9 VIN=0.9V 1.2V 2.7V 1.5V 4.8 4.7 3.0 0.1 1 10 100 1000 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA) Output Current 1 IOUT1 (mA) Dotted Arrowhead PWM/PFM Switching Control 13/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 1ch Step-Up DC/DC Controller > (2) Efficiency vs. Output Current Dotted Arrowhead 14/43 PWM/PFM Switching Control XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 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=15μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 2.7V 80 Efficiency1 EFFI 1 (%) Efficiency1 EFFI 1 (%) 80 1.5V 60 VIN=0.9V 1.2V 40 20 1.2V 60 VIN=0.9V 1.5V 40 20 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 1000 0.1 10 100 Output Current 1 IOUT1 (mA) FOSC=300kHz, VOUT1= 5.0V FOSC=500kHz, VOUT1= 2.5V L1=15μH(CDRH5D28), CL1=94μF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 1 Output Current 1 IOUT1 (mA) 1000 L1=10μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 PWM/PFM Switching Control PWM Control 80 4.2V 60 3.3V VIN=1.2V 40 2.7V 1.5V Efficiency1 EFFI 1 (%) Efficiency1 EFFI 1 (%) 80 1.2V VIN=0.9V 40 20 PWM/PFM Switching Control PWM Control 20 1.5V 60 0 0 0.1 1 10 100 0.1 1000 100 FOSC=500kHz, VOUT1= 3.3V FOSC=500kHz, VOUT1= 5.0V 1000 L1=10μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 PWM/PFM Switching Control PWM Control 4.2V 80 Efficiency1 EFFI 1 (%) 80 Efficiency1 EFFI 1 (%) 10 Output Current 1 IOUT1 (mA) L1=10μH(CDRH5D28), CL1=94μF(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 1 Output Current 1 IOUT1 (mA) 2.7V 60 VIN=0.9 1.2V 40 1.5V 3.3V 60 1.2V 40 20 20 2.7V VIN=0.9V 1.5V PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 1000 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA) Output Current 1 IOUT1 (mA) Dotted Arrowhead PWM/PFM Switching Control 15/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 1ch Step-Up DC/DC Controller > (3) Ripple Voltage vs. Output Current FOSC=180kHz, VOUT1= 2.5V FOSC=180kHz, VOUT1= 1.5V L1=22μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 L1=22μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 80 Ripple Voltage1 (mV) Ripple Voltage1 (mV) 80 60 1.2V VIN=0.9V 40 VIN=0.9V 1.2V 1.5V 60 40 20 20 0 0 0.1 1 10 100 0.1 1000 1 FOSC=180kHz, VOUT1= 3.3V PWM/PFM Switching Control PWM Control 4.2V 80 Ripple Voltage1 (mV) 80 60 1000 L1=22μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 PWM/PFM Switching Control PWM Control Ripple Voltage1 (mV) 100 FOSC=180kHz, VOUT1= 5.0V L1=22μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 10 Output Current 1 IOUT1 (mA) Output Current 1 IOUT1 (mA) 1.5V VIN=0.9V 40 2.7V 20 2.7V 60 VIN=1.5V 40 20 3.3V 1.2 0 0 0.1 1 10 100 1000 0.1 Output Current 1 IOUT1 (mA) 1 10 100 1000 Output Current 1 IOUT1 (mA) FOSC=180kHz, VOUT1= 8.0V L1=22μ H(CDRH5D28), CL1=94μ F(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 IOUT1 (mA) Dotted Arrowhead 16/43 PWM/PFM Switching Control XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 1ch Step-Up DC/DC Controller > (3) Ripple Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT1= 3.3V FOSC=300kHz, VOUT1= 2.5V L1=15μH(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 1.2V 60 VIN=0.9V 40 VIN=0.9V 40 2.7V 0 0 0.1 1 10 100 0.1 1000 1 10 100 Output Current 1 IOUT1 (mA) Output Current 1 IOUT1 (mA) FOSC=300kHz, VOUT1= 5.0V FOSC=500kHz, VOUT1= 2.5V L1=15μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 Ripple Voltage1 (mV) 2.7V 60 PWM/PFM Switching Control PWM Control 80 1.5V VIN=1.2V 40 1000 L1=10μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 4.2V 3.3V PWM/PFM Switching Control PWM Control 80 Ripple Voltage1 (mV) 1.2V 60 20 20 1.2V 60 VIN=0.9V 1.5V 40 20 20 0 0 0.1 1 10 100 0.1 1000 1 10 100 Output Current 1 IOUT1 (mA) Output Current 1 IOUT1 (mA) FOSC=500kHz, VOUT1= 3.3V FOSC=500kHz, VOUT1= 5.0V L1=10μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control Ripple Voltage1 (mV) 60 VIN=0.9V 40 20 2.7V 80 1.2V 1.5V 60 1.2V VIN=0.9V 40 4.2V 20 1.5V 1000 L1=10μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 2.7V 80 Ripple Voltage1 (mV) 1.5V 80 1.5V Ripple Voltage1 (mV) Ripple Voltage1 (mV) PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 80 L1=15μ H(CDRH5D28), CL1=94μ F(Tantalum) SD1:CMS02, Tr1:XP161A1355P 100 3.3V 0 0 0.1 1 10 100 1000 0.1 Output Current 1 IOUT1 (mA) 1 10 100 1000 Output Current 1 IOUT1 (mA) Dotted Arrowhead PWM/PFM Switching Control 17/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (4) Output Voltage vs. Output Current FOSC=180kHz, VOUT2=1.0V FOSC=180kHz, VOUT2=1.0V L2=47μ H(CDRH6D38), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1.2 PWM/PFM Switching Control PWM Control 1.1 10V Output Voltage2 V OUT2 (V) Output Voltage2 V OUT2 (V) L2=47μ H(CDRH6D38), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1.2 1.0 0.9 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 0.8 1.1 10V 1.0 0.9 4.2V 5.0V 6.0V 8.0V VIN=2.7V 3.3V 0.8 0.7 0.7 0.1 1 10 100 Output Current2 IOUT2 (mA) 0.1 1000 100 1000 FOSC=180kHz, VOUT2=5.0V L2=47μH(CDRH6D38), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 5.2 PWM/PFM Switching Control PWM Control 3.4 L2=47μ H(CDRH6D38), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P PWM/PFM Switching Control PWM Control 5.1 Output Voltage2 V OUT2 (V) Output Voltage2 V OUT2 (V) 10 Output Current2 IOUT2 (mA) FOSC=180kHz, VOUT2=3.3V 3.5 1 3.3 3.2 VIN=4.2V 5.0V 6.0V 8.0V 10V 3.1 3.0 5.0 4.9 VIN= 6.0V 8.0V 10V 4.8 4.7 0.1 1 10 100 1000 0.1 Output Current2 IOUT2 (mA) 10 100 1000 Output Current2 IOUT2 (mA) FOCS=300kHz, VOUT2=1.0V FOSC=300kHz, VOUT2=1.0V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1.2 1 1.2 PWM Control L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P PWM/PFM Switching Control Output Voltage2 V OUT2 (V) Output Voltage2 V OUT2 (V) VIN=2.7V 3.3V 1.1 1.0 0.9 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 0.8 0.7 1.1 5.0V 1.0 0.9 4.2V 6.0V 8.0V 10V 0.8 0.7 0.1 1 10 100 Output Current2 IOUT2 (mA) 1000 0.1 1 *When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94μF (Tantalum) + 100μF (OS capacitor) 18/43 10 100 Output Current2 IOUT2 (mA) 1000 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (4) Output Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT2=1.8V FOSC=300kHz, VOUT2=1.8V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 2.0 PWM Control PWM/PFM Switching Control Output Voltage2 V OUT2 (V) Output Voltage2 V OUT2 (V) 1.9 1.8 1.7 VIN= 2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 1.6 1.5 1.9 6.0V 8.0V 10V 1.8 1.7 VIN= 2.7V 3.3V 4.2V 5.0V 1.6 1.5 0.1 2.7 L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 2.0 1 10 100 1000 0.1 1 10 100 Output Current2 IOUT2 (mA) Output Current2 IOUT2 (mA) FOSC=300kHz, VOUT2=2.5V FOSC=300kHz, VOUT2=2.5V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 2.7 PWM Control 1000 L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P PWM/PFM Switching Control 10V 2.6 10.0V Output Voltage2 V OUT2 (V) Output Voltage2 V OUT2 (V) 2.6 2.5 2.4 VIN= 2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 2.3 2.2 0.1 1 10 100 8.0V 2.5 2.4 3.3V 4.2V 5.0V 6.0V 2.2 1000 0.1 1 10 100 Output Current2 IOUT2 (mA) Output Current2 IOUT2 (mA) FOSC=300kHz, VOUT2=3.3V FOSC=300kHz, VOUT2=3.3V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 3.5 1000 L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 3.5 PWM Control PWM/PFM Switching Control VIN=4.2V 5.0V 6.0V 8.0V 3.4 3.4 Output Voltage2 V OUT2 (V) Output Voltage2 V OUT2 (V) VIN=2.7V 2.3 3.3 10.0V 3.2 3.1 VIN=4.2V 5.0V 6.0V 8.0V 3.3 3.2 10.0V 3.1 3.0 0.1 1 10 100 Output Current2 IOUT2 (mA) 1000 3.0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA) 19/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (4) Output Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT2=5.0V FOSC=300kHz, VOUT2=5.0V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 5.2 PWM Control PWM/PFM Switching Control 10.0V 10.0V 5.1 Output Voltage2 V OUT2 (V) 5.1 Output Voltage2 V OUT2 (V) L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 5.2 5.0 VIN= 6.0V 8.0V 4.9 4.8 4.7 5.0 VIN= 6.0V 8.0V 4.9 4.8 4.7 0.1 1 10 100 1000 0.1 Output Current2 IOUT2 (mA) 1000 L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1.2 PWM Control PWM/PFM Switching Control Output Voltage2 V OUT2 (V) Output Voltage2 V OUT2 (V) 100 FOSC=500kHz, VOUT2=1.0V L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1.1 1.0 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 0.9 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 3.5 10 Output Current2 IOUT2 (mA) FOSC=500kHz, VOUT2=1.0V 1.2 1 1 10 100 1000 0.1 1 10 100 Output Current2 IOUT2 (mA) Output Current2 IOUT2 (mA) FOSC=500kHz, VOUT2=3.3V FOSC=500kHz, VOUT2=3.3V L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 3.5 PWM Control 1000 PWM/PFM Switching Control Output Voltage2 V OUT2 (V) Output Voltage2 V OUT2 (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 IOUT2 (mA) 1000 0.1 1 *When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94μF (Tantalum) + 100μF (OS capacitor) 20/43 10 100 Output Current2 IOUT2 (mA) 1000 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (4) Output Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT2=5.0V 5.2 L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P PWM/PFM Switching Control PWM Control Output Voltage2 V OUT2 (V) 5.1 5.0 VIN= 6.0V 8.0V 10V 4.9 4.8 4.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA) *When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94μF (Tantalum) + 100μF (OS capacitor) 21/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (5) Efficiency vs. Output Current FOSC=180kHz, VOUT2=1.0V 100 VIN=5.0V Efficiency2 EFFI12 (%) 80 60 4.2V 40 3.3V VIN=2.7V 20 L2=47μ H(CDRH6D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 Efficiency2 EFFI12 (%) FOSC=180kHz, VOUT2=1.0V L2=47μ H(CDRH6D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 8.0V 60 6.0V 40 10V 20 PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 0.1 1000 10 100 Output Current2 IOUT2 (mA) FOSC=180kHz, VOUT2=3.3V FOSC=180kHz, VOUT2=5.0V L2=47μ H(CDRH6D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 1 Output Current2 IOUT2 (mA) 1000 L2=47μ H(CDRH6D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 5.0V 80 VIN=4.2V Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) 80 10V 60 8.0V 6.0V 40 20 8.0V VIN=6.0V 40 20 PWM/PFM Switching Control PWM Control 0 PWM/PFM Switching Control PWM Control 0 0.1 1 10 100 1000 0.1 10 100 Output Current2 IOUT2 (mA) FOSC=300kHz, VOUT2=1.0V FOSC=300kHz, VOUT2=1.0V 1000 L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 10V 80 Efficiency2 EFFI12 (%) 80 1 Output Current2 IOUT2 (mA) L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 Efficiency2 EFFI12 (%) 10V 60 60 4.2V 3.3V 40 VIN=2.7V 20 8.0V 6.0V 60 40 20 VIN=5.0V 0 0 0.1 1 10 100 Output Current2 IOUT2 (mA) 1000 0.1 1 *When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94μF (Tantalum) + 100μF (OS capacitor) 22/43 10 100 Output Current2 IOUT2 (mA) 1000 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (5) Efficiency vs. Output Current (Continued) FOSC=300kHz, VOUT2=1.8V FOSC=300kHz, VOUT2=1.8V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 80 Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) 80 VIN= 2.7V 60 3.3V 40 4.2V 20 10V 60 VIN=5.0V 8.0V 40 6.0V 20 0 0 0.1 1 10 100 0.1 1000 1 10 100 Output Current2 IOUT2 (mA) Output Current2 IOUT2 (mA) FOSC=300kHz, VOUT2=2.5V FOSC=300kHz, VOUT2=2.5V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr:2XP162A12A6P 100 1000 L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 VIN=2.7V 60 Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) 80 3.3V 40 4.2V 20 10V 60 VIN=5.0V 40 8.0V 6.0V 20 PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 0.1 1000 100 FOSC=300kHz, VOUT2=3.3V FOSC=300kHz, VOUT2=5.0V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1000 L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 80 10V Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) 10 Output Current2 IOUT2 (mA) 100 80 1 Output Current2 IOUT2 (mA) 60 8.0V 40 6.0V 20 5.0V VIN=4.2V 60 10V 40 8.0V VIN=6.0V 20 0 0 0.1 1 10 100 Output Current2 IOUT2 (mA) 1000 0.1 1 10 100 1000 Output Current2 IOUT2 (mA) *When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94μF (Tantalum) + 100μF (OS capacitor) 23/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (5) Efficiency vs. Output Current (Continued) FOSC=500kHz, VOUT2=1.0V 100 Efficiency2 EFFI12 (%) 4.2V 40 3.3V VIN=2.7V VIN=5.0V 60 10V 40 6.0V 0 0.1 1 10 100 1000 0.1 10 100 Output Current2 IOUT2 (mA) FOSC=500kHz, VOUT2=3.3V FOSC=500kHz, VOUT2=3.3V 1000 L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 10V 80 Efficiency2 EFFI12 (%) 80 1 Output Current2 IOUT2 (mA) L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 8.0V 60 6.0V 5.0V 40 VIN=4.2V 20 60 10V 40 8.0V VIN=6.0V 20 PWM/PFM Switching Control PWM Control PWM/PFM Switching Control PWM Control 0 0 0.1 1 10 100 Output Current2 IOUT2 (mA) 1000 0.1 1 10 100 Output Current2 IOUT2 (mA) *When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94μF (Tantalum) + 100μF (OS capacitor) 24/43 8.0V 20 0 Efficiency2 EFFI12 (%) PWM/PFM Switching Control PWM Control 80 60 20 L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 Efficiency2 EFFI12 (%) FOSC=500kHz, VOUT2=1.0V L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 1000 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (6) Ripple Voltage vs. Output Current FOSC=180kHz, VOUT2=1.0V FOSC=180kHz, VOUT2=1.0V L2=47μ H(CDRH6D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=47μ H(CDRH6D28), CL2=94μ F(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 20 60 VIN=2.7V 40 8.0V 3.3V 0 0.1 1 10 100 1000 0.1 1 Output Current2 IOUT2 (mA) 100 1000 FOSC=180kHz, VOUT2=3.3V L2=47μ H(CDRH6D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 10 Output Current2 IOUT2 (mA) FOSC=180kHz, VOUT2=3.3V L2=47μ H(CDRH6D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control PWM/PFM Switching Control 80 Ripple Voltage2 (mV) 80 Ripple Voltage2 (mV) 10V 5.0V 6.0V 20 0 60 10V 40 8.0V 5.0V VIN=4.2V 6.0V 20 60 VIN=4.2V 40 5.0V 6.0V 8.0V 10V 20 0 0 0.1 1 10 100 1000 0.1 Output Current2 IOUT2 (mA) 10 100 1000 FOSC=180kHz, VOUT2=5.0V L2=47μ H(CDRH6D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 1 Output Current2 IOUT2 (mA) FOSC=180kHz, VOUT2=5.0V L2=47μ H(CDRH6D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control PWM/PFM Switching Control 80 80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 4.2V 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 IOUT2 (mA) 1000 0.1 1 10 100 1000 Output Current2 IOUT2 (mA) *When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94μF (Tantalum) + 100μF (OS capacitor) 25/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (6) Ripple Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT2=1.0V FOSC=300kHz, VOUT2=1.0V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=22μ H(CDRH5D28), CL2=94μ F(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 6.0V 5.0V 40 4.2V 8.0V 3.3V 20 0 0.1 1 10 100 0 1000 0.1 Output Current2 IOUT2 (mA) 1 10 100 1000 Output Current2 IOUT2 (mA) FOSC=300kHz, VOUT2=1.8V 100 10V FOSC=300kHz, VOUT2=1.8V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control PWM/PFM Switching Control 80 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V Ripple Voltage2 (mV) Ripple Voltage2 (mV) 80 60 40 20 60 5.0V 4.2V 10V 8.0V 6.0V 40 20 0 0 0.1 1 10 100 1000 0.1 10 100 Output Current2 IOUT2 (mA) FOSC=300kHz, VOUT2=2.5V FOSC=300kHz, VOUT2=2.5V 1000 L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control PWM/PFM Switching Control 80 80 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 60 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 1 Output Current2 IOUT2 (mA) L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 40 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 Output Current2 IOUT2 (mA) 1000 0.1 1 10 100 Output Current2 IOUT2 (mA) *When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94μF (Tantalum) + 100μF (OS capacitor) 26/43 3.3V VIN=2.7V 1000 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (6) Ripple Voltage vs. Output Current (Continued) FOSC=300kHz, VOUT2=3.3V FOSC=300kHz, VOUT2=3.3V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control PWM/PFM Switching Control 80 VIN=4.2V 5.0V 6.0V 8.0V 10V Ripple Voltage2 (mV) Ripple Voltage2 (mV) 80 60 40 20 60 VIN=4.2V 20 0 0 0.1 1 10 100 1000 0.1 1 Output Current2 IOUT2 (mA) 1000 L2=22μH(CDRH5D28), CL2=94μF(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control PWM/PFM Switching Control 80 80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 100 FOSC=300kHz, VOUT2=5.0V L2=22μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 10 Output Current2 IOUT2 (mA) FOSC=300kHz, VOUT2=5.0V 60 VIN=6.0V 40 8.0V 10V 20 60 40 VIN=6.0V 10.0V 8.0V 20 0 0 0.1 1 10 100 1000 0.1 1 10 100 Output Current2 IOUT2 (mA) Output Current2 IOUT2 (mA) FOSC=500kHz, VOUT2=1.0V FOSC=500kHz, VOUT2=1.0V L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 1000 L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM/PFM Switching Control PWM Control 80 Ripple Voltage2 (mV) 80 Ripple Voltage2 (mV) 6.0V 8.0V 10.0V 5.0V 40 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V 60 40 20 60 VIN=2.7V 40 8.0V 10V 5.0V 6.0V 4.2V 3.3V 20 0 0 0.1 1 10 100 Output Current2 IOUT2 (mA) 1000 0.1 1 10 100 1000 Output Current2 IOUT2 (mA) *When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94μF (Tantalum) + 100μF (OS capacitor) 27/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) < 2ch Step-Down DC/DC Controller > (6) Ripple Voltage vs. Output Current (Continued) FOSC=500kHz, VOUT2=3.3V FOSC=500kHz, VOUT2=3.3V L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 L2=10μ H(CDRH5D28), CL2=94μ F(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 10V 0 0.1 1 10 100 0.1 1000 1 10 100 Output Current2 IOUT2 (mA) Output Current2 IOUT2 (mA) FOSC=500kHz, VOUT2=5.0V FOSC=500kHz, VOUT2=5.0V L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 1000 L2=10μ H(CDRH5D28), CL2=94μ F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P 100 PWM Control PWM/PFM Switching Control 80 Ripple Voltage2 (mV) 80 60 10V 40 8.0V VIN=6.0V 20 60 40 8.0V VIN=6.0V 10V 20 0 0 0.1 1 10 100 Output Current2 IOUT2 (mA) 1000 0.1 1 10 100 Output Current2 IOUT2 (mA) *When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94μF (Tantalum) + 100μF (OS capacitor) 28/43 8.0V 6.0V 20 0 Ripple Voltage2 (mV) 5.0V 40 1000 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (7) Supply Current vs. Supply Voltage (8) Supply Current 1-1 vs. Supply Voltage (9) Supply Current 1-2 vs. Supply Voltage (10) Supply Current 1-3 vs. Supply Voltage (11) Supply Current 1-4 vs. Supply Voltage (12) Supply Current 2 vs. Supply Voltage 29/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (13) Oscillation Frequency vs. Supply Voltage (15) PWM1, 2 'H' 'L' Voltage vs. Supply Voltage (17) Maximum Duty Ratio 1 vs. Supply Voltage 30/43 (14) Stand-by Current vs. Supply Voltage (16) EN1, 2 'H' 'L' Voltage vs. Supply Voltage (18) PFM Duty Ratio 1, 2 vs. Supply Voltage XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (19) EXT 1, 2 High ON Resistance vs. Supply Voltage (21) Output Voltage vs. Ambient Temperature (23) Operation Retention Voltage vs. Ambient Temperature (20) EXT 1, 2 Low ON Resistance vs. Supply Voltage (22) Oscillation Start-Up Voltage vs. Ambient Temperature (24) Operation Start-Up Voltage vs. Ambient Temperature 31/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (25) Soft-Start Time 1, 2 vs. Supply Voltage 32/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (26) Load Transient Response [1 channel: Step-Up DC/DC Controller] < VOUT1 = 3.3V, VIN = 2.0V, IOUT1, 2 =100μA 100mA > ● PWM Control FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100μA→100mA CH1 FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA→100μA 3.3V 3.3V CH1 100mA CH2 100μA 100mA 100μA CH2 10msec/div 200μsec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div ● PWM/PFM Switching Control FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100μA→100mA CH1 FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA→100μA 3.3V 3.3V CH1 100mA 100mA CH2 CH2 100μA 200μsec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div 100μA 10msec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div 33/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (26) Load Transient Response (Continued) < VOUT1 = 3.3V, VIN = 2.0V, IOUT1, 2 =10mA 100mA > ● PWM Control FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA→10mA FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=10mA→100mA CH1 3.3V 3.3V CH1 100mA CH2 10mA 100mA CH2 200μsec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div 10mA 200μsec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div ● PWM/PFM Switching Control FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=100mA→10mA FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=10mA→100mA CH1 3.3V CH1 3.3V 100mA 10mA CH2 200μsec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div 34/43 100mA CH2 10mA 200μsec/div CH1: VOUT1, AC-COUPLED, 50mV/div CH2: IOUT1, 50mA/div XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (26) Load Transient Response (Continued) <PWM Control→PWM/PFM Switching Control> FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=1mA, PWM1 ’H’→’L’ FOSC=180kHz, VOUT1=3.3V VIN=2.0V, IOUT1=1mA, PWM1 ’L’→’H’ CH1 3.3V CH1 3.3V 0.65V 0.65V CH2 CH2 0V 0V 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’→’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 * EN2=GND 35/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (26) Load Transient Response (Continued) < VOUT2=3.3V, VIN=5.0V, IOUT2=100μA 300mA> ● PWM Control FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=300mA→100μA FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=100μA→ 300mA CH1 3.3V CH1 3.3V 300mA 300mA 100μA CH2 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 100μA ● PWM/PFM Switching Control FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=300mA→100μA FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=100μA→ 300mA 3.3V CH1 CH1 3.3V 300mA CH2 100μA 300mA CH2 100μA 200μsec/div CH1: VOUT2, AC-COUPLED, 100mV/div CH2: IOUT2, 150mA/div 36/43 10msec/div CH1: VOUT2, AC-COUPLED, 100mV/div CH2: IOUT2, 150mA/div XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (26) Load Transient Response (Continued) < VOUT2=3.3V, VIN=5.0V, IOUT2=10mA 300mA> ● PWM Control FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=300mA→10mA FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=10mA→ 300mA CH1 3.3V 3.3V CH1 300mA CH2 10mA 300mA CH2 200μsec/div CH1: VOUT2, AC-COUPLED, 50mV/div CH2: IOUT2, 150mA/div 10mA 400μsec/div CH1: VOUT2, AC-COUPLED, 50mV/div CH2: IOUT2, 150mA/div ● PWM/PFM Switching Control FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=10mA→ 300mA FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=300mA→10mA 3.3V CH1 3.3V CH1 300mA 300mA CH2 10mA 200μsec/div CH1: VOUT2, AC-COUPLED, 100mV/div CH2: IOUT2, 150mA/div 10mA CH2 200μsec/div CH1: VOUT2, AC-COUPLED, 50mV/div CH2: IOUT2, 150mA/div 37/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (26) Load Transient Response (Continued) < VOUT2=0.9V, VIN=3.3V, IOUT2=100μA 300mA> ● PWM Control FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=300mA→100μA FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=100μA→ 300mA 0.9V CH1 0.9V CH1 300mA CH2 100μA 300mA 100μA CH2 200μsec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div 4msec/div CH1: VOUT2, AC-COUPLED, 20mV/di CH2: IOUT2, 150mA/div ● PWM/PFM Switching Control FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=100μA→ 300mA FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=300mA→100μA 0.9V CH1 0.9V CH1 300mA 300mA CH2 100μA 200μsec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div 38/43 100μA CH2 4msec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (26) Load Transient Response (Continued) < VOUT2=0.9V, VIN=3.3V, IOUT2=10mA 300mA> ● PWM Control FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=300mA→10mA FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=10mA→ 300mA CH1 0.9V 0.9V CH1 300mA CH2 10mA 300mA CH2 10mA 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 VIN=3.3V, IOUT2=300mA→10mA FOSC=300kHz, VOUT2=0.9V VIN=3.3V, IOUT2=10mA→ 300mA CH1 0.9V CH1 0.9V 300mA CH2 10mA 200μsec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div 300mA CH2 10mA 200μsec/div CH1: VOUT2, AC-COUPLED, 20mV/div CH2: IOUT2, 150mA/div 39/43 XC9502 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (26) Load Transient Response (Continued) <PWM Control ⇔ PWM/PFM Switching Control> FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=5mA, PWM2 ’H’→’L’ FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=5mA, PWM2 ’L’→’H’ CH1 CH1 3.3V 3.3V 0.65V 0.65V CH2 0V CH2 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 VIN=5.0V, IOUT2=300mA, EN2 ’L’→’H’ CIN=47μF FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=100mA, EN2 ’L’→’H’ CIN=47μF 3.3V 3.3V CH1 CH1 200mA 75mA CH2 0.65V 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 40/43 0.65V CH2 XC9502 Series ■PACKAGING INFORMATION ●MSOP-10 ●USP-10 * Soldering fillet surface is not formed because the sides of the pins are not plated. ●USP-10 Recommended Pattern Layout ●USP-10 Recommended Metal Mask Design 2.3 41/43 XC9502 Series ■MARKING RULE ① Represents product series ●MSOP-10, USP-10 MARK 3 PRODUCT SERIES XC9502B09xxx ② Represents type of DC/DC converter MARK PRODUCT SERIES B XC9502B09xxx ③, ④ Represents FB voltage MARK MSOP-10 (TOP VIEW) USP-10 (TOP VIEW) ③ ④ VOLTAGE (V) PRODUCT SERIES 0 9 0.9 XC9502B09xxx ⑤ Represents oscillation frequency 2 OSCILLATION FREQUENCY (kHz) 180 3 300 XC9502B093xx 5 500 XC9502B095xx MARK PRODUCT SERIES XC9502B092xx ⑥ Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W expected) Note: No character inversion used. 42/43 XC9502 Series 1. The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this catalog is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. The products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. Please use the products listed in this catalog within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd. 43/43