RN5T566A REV.1.3 RN5T566A Product Specifications Rev.1.3 2012.08.29 RICOH COMPANY, LTD. Electronic Devices Company This specification is subject to change without notice. 2011-2012 Rev.1.3 Page 1 RN5T566A REV.1.3 Table of Contents 1. Outline ..................................................................................................................................................... 3 2. Feature .................................................................................................................................................... 3 3. Pin Configuration .................................................................................................................................... 4 4. Block Diagram ......................................................................................................................................... 5 5. Pin Description......................................................................................................................................... 6 6. Function Block ......................................................................................................................................... 7 6.1 LDO, DCDC Table .............................................................................................................................................7 6.2 LDO ....................................................................................................................................................................8 6.2.1 Regulator Block Diagram .............................................................................................................................. 8 6.2.2 LDO ON/OFF Control................................................................................................................................... 8 6.2.3 LDO1 Electrical Characteristics .................................................................................................................... 9 6.2.4 LDO2 Electrical Characteristics .................................................................................................................. 10 6.2.5 LDO3 Electrical Characteristics .................................................................................................................. 11 6.2.6 LDO4 Electrical Characteristics .................................................................................................................. 12 6.2.7 LDO5 Electrical Characteristics .................................................................................................................. 13 6.3 Step-down DC/DC Converter ...........................................................................................................................14 6.3.1 Step-down DC/DC Converter1 Electrical Characteristics ........................................................................... 14 6.3.2 Step-down DC/DC Converter2 Electrical Characteristics ........................................................................... 15 6.3.3 Step-down DC/DC Converter1, DC/DC Converter1,2 Block Diagram....................................................... 16 6.3.4 Step-down DC/DC Converter1, DC/DC Converter2 ON/OFF Control ....................................................... 16 6.4 Voltage Detection1 Function ............................................................................................................................17 6.5 Voltage Detection2 Function ............................................................................................................................18 6.6 UVLO (Under Voltage Lock Out) Electrical Characteristics ...........................................................................19 6.6.1 6.7 UVLO Block Diagram (for LDO5) ............................................................................................................. 19 Voltage Detection3 Function ............................................................................................................................19 6.7.1 6.8 VD3 Block Diagram (for LDO1～4、DCDC1～2) ..................................................................................... 19 Thermal Shut-down Circuit Electrical Characteristics......................................................................................20 6.8.1 Thermal Shut-down Block Diagram ............................................................................................................ 20 Electrical Characteristics ....................................................................................................................... 21 7. 7.1 Absolute Maximum Ratings .............................................................................................................................21 7.2 Recommendation of Operating Conditions.......................................................................................................21 7.3 DC Characteristics ............................................................................................................................................22 2011-2012 Rev.1.3 Page 2 RN5T566A REV.1.3 1. Outline RN5T566A is the power management IC for GPS. It integrates 2 high-efficiency step-down DCDC controllers, 5 low dropout regulators, power control logic, 3 voltage detections, thermal shut-down, UVLO and etc. 2. Feature High Efficiency Synchronous Step-down DCDC Converters DC/DC1 1.15～1.90V by external resistors @ 700mA (for Memory) DC/DC2 1.00~1.30V by external resistors @ 1A (for Core) Soft-start circuit (DCDC1, 2) Low Drop Voltage Regulator LDO1 3.3V by trimming @ 150mA (for Analog) LDO2 1.7～3.3V by external resistors @ 300mA (for I/O) LDO3 1.1V by trimming @ 20mA (for PLL) LDO4 1.7～3.3V by external resistors @ 100mA (for RF) LDO5 3.3V by trimming @ 5mA with reverse protection (for RTC) ON/OFF control through pin (LDO1, LDO2, LDO3, LDO4) Over current protection Others UVLO Thermal shut-down Voltage detection for RTC reset (LDO5 voltage monitor) Voltage detection for battery and adapter voltage detection (External circuit PIN) Package QFN0606-36pin (size=6.0x6.0mm, pitch=0.5mm, t=0.9mm) Process CMOS process 2011-2012 Rev.1.3 Page 3 RN5T566A REV.1.3 28 29 30 31 32 33 34 35 36 3. Pin Configuration 1 27 2 26 3 25 4 24 TOP VIEW 5 23 6 22 7 21 GND *1 8 20 18 17 16 15 14 13 12 11 19 10 9 Note*1: Tab on the bottom side must be connected to GND. Fig 3-1 QFN0606-36Pin Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Name DC2EXON DC1EXON DC2SEL VCCA VO1 VCCL1 VO2 VFBLDO2 VREFO GNDA VO3 VCCL3 VO4 VFBLDO4 VO5 VD2OUT VD1OUT VCCL5 Pin No. 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Name GNDD TEST2 TEST1 VD1HYS VD1IN INT18 LDO1EXON LDO2EXON LDO3EXON LDO4EXON VFB2 LX2 LX2 VCCP2 VCCP1 LX1 LX1 VFB1 Table 3-1 Pin Configuration 2011-2012 Rev.1.3 Page 4 RN5T566A REV.1.3 4. Block Diagram VCCA 1.0uF 22uF VCCP1 VCCL1 GND 2.2uH GND LDO1 150mA VO1 1.0uF Normal LX1 LX1 Step-down DC/DC Converter 1 Cf R1 47uF GND LDO1EXON VFB1 DC1EXON R2 GND VO2 VCCP2 GND LDO2 300mA 2.2uF 2.2uH R1 Normal LX2 LX2 VFBLDO2 Step-down DC/DC Converter 2 GND R2 LDO2EXON Cf R1 47uF VFB2 DC2EXON DC2SEL GND VCCL3 R2 GND VO3 GND LDO3 20mA 1.0uF Battery or Adaptor PIN Normal R1 GND VD1IN Voltage1 Detector LDO3EXON R2 VD1HYS VO4 LDO4 100mA 1.0uF UVLO * VD3 R3 VD1OUT GND R1 Normal VFBLDO4 GND Voltage2 Detector * R2 LDO4EXON GND VD2OUT VCCL5 LDO5 5mA Always ON * VO5 Thermal Shut-down VREFO Vref 1.0uF 1.0uF Reverse Protection * GND INT18 TEST1 TEST2 GND GNDA GNDD GND 1.0uF GND GND Note*: These devices are always ON. Fig 4-1 Block Diagram 2011-2012 Rev.1.3 Page 5 RN5T566A REV.1.3 5. Pin Description No. Function I/F Level I/O 1 Name DC2EXON I DCDC2 ON/OFF input Coin Battery 2 DC1EXON I DCDC1 ON/OFF input Coin Battery 3 DC2SEL I DCDC2 Output Voltage Select 4 VCCA PWR Power supply VCC 5 VO1 O LDO1 output - 6 VCCL1 PWR Power supply VCC 7 VO2 O LDO2 output - 8 VFBLDO2 I Output voltage feedback input of LDO2 I 9 VREFO O Bypass capacitor connecting pin - 10 GNDA G Ground 11 VO3 O LDO3 output - 12 VCCL3 PWR Power supply VCC 13 VO4 O LDO4 output - 14 VFBLDO4 I Output voltage feedback input of LDO4 I 15 VO5 O LDO5 output - 16 VD2OUT O 17 VD1OUT O Voltage detection2 output (Nch-opendrain) Voltage detection1 output (Nch-opendrain) *The Protective device for power is Pch-Tr(Diode) 18 VCCL5 PWR 19 GNDD 20 Notes 2.7-3.3V Connect only Capacitor load GND N-ch OD N-ch OD Power supply (for LDO5) VCC G Ground GND TEST2 I Test mode pin - Connect to GND 21 TEST1 I Test mode pin - Connect to GND 22 VD1HYS I Hysteresis in VCC 23 VD1IN I Voltage detection1 in VCC 24 INT18 O Bypass capacitor connecting pin 25 LDO1EXON I LDO1 ON/OFF input Coin Battery 26 LDO2EXON I LDO2 ON/OFF input Coin Battery 27 LDO3EXON I LDO3 ON/OFF input Coin Battery 28 LDO4EXON I LDO4 ON/OFF input Coin Battery 29 VFB2 I Output voltage feedback input of DCDC2 converter - 30 LX2 O DCDC converter switch output - 31 LX2 O DCDC converter switch output - 32 VCCP2 PWR Power supply VCC 33 VCCP1 PWR Power supply VCC 34 LX1 O DCDC converter switch output - 35 LX1 O DCDC converter switch output - 36 VFB1 I Output voltage feedback input of DCDC1 converter - - GND GND Tab Ground. Tab on the bottom side must be connected to GND. - - Connect only Capacitor load Table 5-1 Pad Description 2011-2012 Rev.1.3 Page 6 RN5T566A REV.1.3 6. Function Block 6.1 LDO, DCDC Table LDO1 LDO2 LDO3 LDO4 LDO5 DCDC1 DCDC2 (Analog) (I/O) (PLL) (RF) (RTC) (Memory) (Core) Current Capability 150mA 300mA 20mA 100mA 5mA 700mA 1A Mode - - - - - PWM/SKIP PWM/SKIP Output Voltage Range 3.3V 1.7～3.3V by external resistors 1.1V 1.7～3.3V by external resistors 3.3V 1.15～1.9V by external resistors 1.0～1.3V by external resistors ON/OFF Control PIN PIN PIN PIN Always ON PIN PIN Bypass Capacitance (COUT) Note*1 1.0uF 2.2uF 1.0uF 1.0uF 1.0uF 47uF 2.2uH 47uF 2.2uH Table 6-1 LDO, DCDC Table Note*1: Available Capacitors＆Inductorｓ Bypass Capacitors for LDO 1.0uF：C1005JB1C105K(TDK)/ 2.2uF：C1608JB0J225K(TDK) Bypass Capacitors for DCDC 10uF：2012 Size(mm) or more Inductor For DCDC 2.2uH：MIPSZ2520D2R2M（FDK） Input Capacitors for DCDC 22uF：GRM21BB30J226ME38(murata) 47uF：C2012X5R0J476M(TDK) 2011-2012 Rev.1.3 Page 7 RN5T566A REV.1.3 6.2 LDO RN5T566A integrates 5 LDO regulators.LDO1～LDO4 are on/off controlled by LDO1EXON～LDO4EXON (“H”=ON, “L”=OFF) and LDO5 is always ON. 6.2.1 Regulator Block Diagram VCCL1 VO1 LDO1 150mA Normal LDO1EXON 1.0uF VO2 GND LDO2 300mA VFBLDO2 Normal LDO2EXON R1 R2 2.2uF GND VCCL3 VO3 LDO3 20mA Normal LDO3EXON GND 1.0uF VO4 GND LDO4 100mA LDO4EXON VFBLDO4 Normal R1 R2 1.0uF GND VCCL5 VO5 LDO5 5mA Always ON VD3&Thermal Shut-down UVLO GND 1.0uF Reverse Protection GND Fig 6-1 LDO Block Diagram 6.2.2 LDO ON/OFF Control Under Voltage or Over Heat VD3& Thermal Shut-down VO1 ON VO1 OFF VO1 ON LDO1EXON Tr Tf Tr Tf VO1 VO2 ON VO2 OFF VO2 ON LDO2EXON Tr Tf Tr Tf VO2 VO3 ON VO3 OFF VO3 ON LDO3EXON Tr Tf Tr Tf VO3 VO4 ON VO4 OFF VO4 ON LDO4EXON Tr Tf Tr Tf VO4 *Tr=800us(max),Tf=1ms(max) Fig 6-2 LDO ON/OFF Control 2011-2012 Rev.1.3 Page 8 RN5T566A REV.1.3 6.2.3 LDO1 Electrical Characteristics Operating Conditions (unless otherwise specified) Symbol Parameter VCCL = 3.6V, CREFO = 1.0µF, Ta = 25℃ Condition Min VIN1 Input Voltage Range VCCL1 pin VOUT1 +0.2 VOUT1 Output Voltage Iload=50uA～150mA -2% IOUT1 Output Current - ILIM1 Current Limit VOUT1=3.3V VDRP1 Drop-out Voltage ∆VOUT1 ∆VCCL ∆VOUT1 ∆IOUT1 ∆VOUT1 ∆Ta 200 Typ 3.3 300 IOUT1=150mA 2.7V≦VCCL Max Units 5.5 V +2% V 150 mA 600 mA 200 mV Line Regulation IOUT1=75mA 0 3 10 mV Load Regulation 50µA＜IOUT1＜150mA 0 15 35 mV ±100 ppm/℃ Output Voltage Temperature -40℃≦Ta≦85℃ Coefficient RR1 Ripple Rejection ISS1 Supply Current EN1 Output Noise f=10Hz-10kHz, Cout=1.0µF,VIN1=3.6V IOUT1=75mA, VOUT≦3.3V LDO1EXON = "H" (ON) 50 60 30 80 LDO1EXON = "L" (OFF) BW=100Hz-100kHz, IOUT1=75mA dB 150 1 50 100 µA µVrms Table 6-2 LDO1 Electrical Characteristics Note*: Bypass capacitor: 1.0uF, in mounted state. For optimized phase compensation, the bypass capacitor must be ceramic type. 2011-2012 Rev.1.3 Page 9 RN5T566A REV.1.3 6.2.4 LDO2 Electrical Characteristics Operating Conditions (unless otherwise specified) Symbol VIN2 Parameter Condition Min Max Units VCCL1 pin VOUT2 +0.2 5.5 V Iload=50uA～300mA 1.7 3.3 V Input Voltage Range VOUT2 Output Voltage Range VCCL = 3.6V, CREFO = 2.2uF, Ta = 25℃ Typ VFB2 IOUT2 Reference Voltage Output Current - -2% 1 +2% 300 V mA ILIM2 Current Limit VOUT2=3.3V 350 450 750 mA VDRP2 Drop-out Voltage 200 mV ∆VOUT2 ∆VCCL ∆VOUT2 ∆IOUT2 ∆VOUT2 ∆Ta 2.7V≦VCCL Line Regulation IOUT2=150mA 0 3 10 mV Load Regulation 50µA＜IOUT2＜300mA 0 5 35 mV ±100 ppm/℃ Output Voltage Temperature -40℃≦Ta≦85℃ Coefficient RR2 Ripple Rejection ISS2 Supply Current*1 EN2 IOUT2=300mA f=10Hz-10kHz, Cout=2.2µF,VIN2=3.6V Output Noise IOUT1=150mA,VOUT≦3.0V LDO2EXON = "H" (ON) 50 60 30 90 LDO2EXON = "L" (OFF) dB 150 µA 1 BW=100Hz-100kHz 110 IOUT2=150mA,VOUT2=3.0V 150 µVrms Table 6-3 LDO2 Electrical Characteristics Note*: Bypass capacitor: 2.2uF, in mounted state. For optimized phase compensation, the bypass capacitor must be ceramic type. Note*1: Supply current does not include the consumption current of external resistors. Output Voltage 3.30V 3.00V 2.85V 2.80V 1.80V R1 R2 230kΩ 200kΩ 185kΩ 180kΩ 80kΩ 100kΩ 100kΩ 100kΩ 100kΩ 100kΩ Notes Table 6-4 LDO2 External Resistors Table 2011-2012 Rev.1.3 Page 10 RN5T566A REV.1.3 6.2.5 LDO3 Electrical Characteristics Operating Conditions (unless otherwise specified) VCCL = 3.6V, CREFO = 1.0µF, Ta = 25℃ Symbol VIN3 VOUT3 Parameter Input Voltage Range Output Voltage Condition VCCL3 pin Iload=50uA～20mA IOUT3 Output Current - ILIM3 Current Limit VOUT3=1.1V 150 Line Regulation IOUT3=10mA Load Regulation 50µA＜IOUT3＜20mA ∆VOUT3 ∆VCCL ∆VOUT3 ∆IOUT3 ∆VOUT3 ∆Ta Min 2.7 -2% Typ Max 5.5 +2% Units V V 20 mA 200 500 mA 0 1 3 mV 0 8 15 mV ±100 ppm/℃ 1.1 Output Voltage Temperature -40℃≦Ta≦85℃ Coefficient RR3 Ripple Rejection ISS3 Supply Current EN3 Output Noise f=10Hz-10kHz, Cout=1.0µF,VIN3=3.6V IOUT3=10mA LDO3EXON = "H" (ON) 50 60 25 50 LDO3EXON = "L" (OFF) BW=100Hz-100kHz, IOUT3=10mA dB 75 1 50 80 µA µVrms Table 6-5 LDO3 Electrical Characteristics Note*: Bypass capacitor: 1.0uF, in mounted state. For optimized phase compensation, the bypass capacitor must be ceramic type. 2011-2012 Rev.1.3 Page 11 RN5T566A REV.1.3 6.2.6 LDO4 Electrical Characteristics Operating Conditions (unless otherwise specified) Symbol VIN4 VOUT4 Parameter Condition Min Max Units VCCL3 pin VOUT4 +0.2 5.5 V Iload=50uA～100mA 1.7 3.3 V -2% +2% V 100 mA 500 mA 200 mV Input Voltage Range Output Voltage Range VCCL = 3.6V, CREFO = 1.0µF, Ta = 25℃ VFB4 Reference Voltage - IOUT4 Output Current - ILIM4 Current Limit VOUT4=3.3V VDRP4 Drop-out Voltage ∆VOUT4 ∆VCCL ∆VOUT4 ∆IOUT4 ∆VOUT4 ∆Ta 150 Typ 1 250 IOUT4=100mA 2.7V≦VCCL Line Regulation IOUT4=50mA 0 3 10 mV Load Regulation 50µA＜IOUT4＜100mA 0 10 25 mV ±100 ppm/℃ Output Voltage -40℃≦Ta≦85℃ Temperature Coefficient RR4 Ripple Rejection ISS4 Supply Current*1 EN4 Output Noise f=10Hz-10kHz, Cout=1.0µF,VIN4=3.6V IOUT4=50mA,VOUT≦3.0V LDO4EXON = "H" (ON) 50 60 30 90 LDO4EXON = "L" (OFF) dB 150 1 BW=100Hz-100kHz, 110 IOUT4=50mA,VOUT4=3.0V 150 µA µVrms Table 6-6 LDO4 Electrical Characteristics Note*: Bypass capacitor: 1.0uF, in mounted state. For optimized phase compensation, the bypass capacitor must be ceramic type. Note*1: Supply current does not include the consumption current of external resistors. Output Voltage 3.30V 3.00V 2.85V 2.80V 1.80V R1 R2 230kΩ 200kΩ 185kΩ 180kΩ 80kΩ 100kΩ 100kΩ 100kΩ 100kΩ 100kΩ Notes Table 6-7 LDO4 External Resistors Table 2011-2012 Rev.1.3 Page 12 RN5T566A REV.1.3 6.2.7 LDO5 Electrical Characteristics Operating Conditions (unless otherwise specified) Symbol Parameter VCCL = 3.6V, CREFO = 1.0µF, Ta = 25℃ Condition Min VCCL5 pin VOUT5 +0.2 Iload=50uA～5mA -3% Iload=1mA & 3.3V≦VCCL 3.0 VIN5 Input Voltage Range VOUT5 Output Voltage IOUT5 Output Current - ILIM5 Current Limit VOUT5=3.3V VDRP5 Drop-out Voltage ∆VOUT5 ∆VCCL ∆VOUT5 ∆IOUT5 ∆VOUT5 ∆Ta 15 Typ 3.3 Max Units 5.5 V +3% V V 60 IOUT5=5mA 2.7V≦VCCL 5 mA 120 mA 200 mV Line Regulation IOUT5=5mA 0 3 10 mV Load Regulation 50µA＜IOUT5＜5mA 0 8 15 mV ±100 ppm/℃ 5 µA 1 µA Output Voltage Temperature -40℃≦Ta≦85℃ Coefficient ISS5 Supply Current*1 ON IRR5 Reverse Current VOUT5=3.3V & VCCL =0V 2 Table 6-8 LDO5 Electrical Characteristics Note*: Bypass capacitor: 1.0uF, in mounted state. For optimized phase compensation, the bypass capacitor must be ceramic type. Note*1: The consumption current of the reverse protection is not included. 2011-2012 Rev.1.3 Page 13 RN5T566A REV.1.3 6.3 Step-down DC/DC Converter 6.3.1 Step-down DC/DC Converter1 Electrical Characteristics Operating Conditions (unless otherwise specified) Symbol - Parameter Input Voltage Range Output Voltage DVOUT1 Range DIOUT1 Output current FREQ1 Frequency Consumption DISS1 Current DIOFF1 Standby Current Limit detection DILIM1 Current VFB1 FB Voltage ∆VFB1 FB Line Regulation ∆VCC ∆VFB1 FB Load Regulation ∆DIOUT1 FB Voltage ∆VFB1 Temperature ∆T Coefficient *1 tr Soft-start Time VCCA, VCCP = 3.6V, Ta = 25℃ L1=2.2uH, COUT=47uF Condition VCCA, VCCP pin Min 2.7 2.7V≦VCCA,VCCP≦5.5V Typ Max 5.5 Units V 1.15 1.9 V 2.0 2.25 700 2.5 mA MHz 50 70 200 uA 1 uA 1600 mA VCCA=VCCP=VFB=3.6V DIOUT1=0mA, no switching OFF state - 1000 VCCA=VCCP=3.6V,DIOUT1=1mA 2.7V≦VCCA,VCCP≦5.5V DIOUT=DIOUTmax / 2 -1.5% 0.60 +1.5% V 0 1 3 mV 1mA≦DIOUT1≦700mA 0 1 3 mV ±100 ppm/℃ 300 us -40℃≦Ta≦+85℃ - 210 Table 6-9 Step-down DC/DC Converter1 Electrical Characteristics Note*1: When all regulators are off, Soft-start time will be added up with Vref boot up time. tr（Typ）= 210us(DCDC only) + 500us(Vref boot up time) Output Voltage 1.775V 1.5V 1.2V R1 47kΩ 36kΩ 30kΩ R2 24kΩ 24kΩ 30kΩ Cf 100pF 100pF 220pF Notes Table 6-10 Step-down DC/DC Converter1 External Resistors Table 2011-2012 Rev.1.3 Page 14 RN5T566A REV.1.3 6.3.2 Step-down DC/DC Converter2 Electrical Characteristics Operating Conditions (unless otherwise specified) Symbol - Parameter Input Voltage Range Output Voltage DVOUT2 Range DV2_09 Output Voltage DIOUT2 FREQ2 Output current Frequency Consumption Current Standby Current Limit detection Current FB Voltage DISS2 DIOFF2 DILIM2 VCCA, VCCP = 3.6V, Ta = 25℃, L1=2.2uH, COUT=47uF Condition VCCA, VCCP pin 2.7V≦VCCA,VCCP≦5.5V DC2SEL=“L” 2.7V≦VCCA,VCCP≦5.5V DC2SEL= “H” - Min 2.7 1.0 Max 5.5 Units V 1.3 V DVOUT2 x0.9 VCCA=VCCP=VFB=3.6V DIOUT2=0mA, no switching OFF state VFB2 ∆VFB2 FB Line Regulation ∆VCC ∆VFB2 FB Load Regulation ∆DIOUT2 FB Voltage ∆VFB2 Temperature ∆T Coefficient *1 tr Soft-start Time Slew rate rise & SR fall tst2 Trans Start Time Typ V 2.0 2.25 1000 2.5 mA MHz 50 70 200 uA 1 uA 1600 mA - 1200 VCCA=VCCP=3.6V,DIOUT2=1mA 2.7V≦VCCA,VCCP≦5.5V DIOUT=DIOUTmax / 2 -1.5% 0.60 +1.5% V 0 1 3 mV 1mA≦DIOUT1≦1000mA 0 1 3 mV ±100 ppm/ ℃ -40℃≦Ta≦+85℃ VFB2 Signal -20% - 210 300 3.5 +20% 30 us mV /µsec µs Table 6-11 Step-down DC/DC Converter2 Electrical Characteristics Note*1: When all regulators are off, Soft-start time will be added up with Vref boot up time. tr（Typ）= 210us(DCDC only) + 500us(Vref boot up time) Don’t change the DC2SEL signal during Soft-start time(tr). Output Voltage R1 R2 Cf 1.2V 30kΩ 30kΩ 220pF 1.1V 30kΩ 36kΩ 220pF 1.0V 22kΩ 33kΩ 220pF Notes Table 6-12 Step-down DC/DC Converter2 External Resistors Table DC2SEL 0.6V VFB2 0.6x90% tst2 SlewRate 3.5mV/us tst2 SlewRate 3.5mV/us Fig 6-3 Step-down DC/DC2 DC2SEL Control 2011-2012 Rev.1.3 Page 15 RN5T566A REV.1.3 6.3.3 Step-down DC/DC Converter1, DC/DC Converter1,2 Block Diagram VCCA VCCP1 GND Current Limit GND LX1 L1=2.2uH DCDC1EXON Switching Control Circuit (Enable Signal) LX1 DVOUT R1 Cf Cout＝47uF VFB1 PWM COMP ERR AMP + + OSC GNDA R2 + GND GND Vref 1 Soft-start Vref 2 SKIP COMP GND VCCA VCCP2 GND Current Limit GND LX2 L1=2.2uH DCDC2EXON Switching Control Circuit (Enable Signal) LX2 DVOUT R1 Cf Cout＝47uF VFB2 PWM COMP ERR AMP R2 + + GND GND OSC DC2SEL Vref 1 GNDA + Vref 2 Soft-start SKIP COMP GND Fig 6-4 Step-down DC/DC Converter 1,2 Block Diagram 6.3.4 Step-down DC/DC Converter1, DC/DC Converter2 ON/OFF Control Under Voltage or Over Heat VD3& Thermal Shut-down DC1 ON DC1 OFF DC1 ON DC1EXON Tr Tr Step-down DC/DC 1 DC2 ON DC2 OFF DC2 ON DC2EXON Tr Tr Step-down DC/DC 2 Fig 6-5 Step-down DC/DC ON/OFF Control 2011-2012 Rev.1.3 Page 16 RN5T566A REV.1.3 6.4 Voltage Detection1 Function After VD1IN pin rises, VD1OUT signal turns to “H” after 100ms from the detection voltage is detected. VD1OUT is Nch-opendrain output pin, and if it is used, pull up the pin with the voltage not exceeding VCC* power. Vbat VD1OUT R1 VD1IN + R2 100ms Delay VD1HYS 1V R3 Hysteresis Circuit GND GND GND GND VH VL Vbat VD1OUT 100ms±30ms Example: VH=3.4V, VL=3.3V : R1=240kΩ, R2=100kΩ R3 = 4.3kΩ VL=(R1+R2+R3)/(R2+R3)×Vref VH=(R1+R2)/R2×Vref VH = Higher voltage threshold VL = lower voltage threshold Vref = reference voltage Fig 6-6 Voltage Detection1 Timing Note*: Control these resistors so that VD1IN and VD1HYS don't exceed 5.5V. Also, if UVLO detects under voltage (Max:2.7V) this VD1 cannot operate. Operating Conditions (unless otherwise specified) Ta = 25℃ Symbol Parameter Condition Min Typ Max Units VDET1 VD1IN Voltage VD1IN Voltage -3% 1.0 +3% V Table 6-13 Voltage Detection1 Electrical Characteristics 2011-2012 Rev.1.3 Page 17 RN5T566A REV.1.3 6.5 Voltage Detection2 Function After LDO5 output (VO5) rises, VD2OUT signal turns to “H” after 400ms from the detection voltage is detected. VD2OUT is Nch-opendrain output pin. 3.3V 2.8V 2.3V VO5 VD2OUT 400ms@MIN Fig 6-7 Voltage Detection2 Timing Operating Conditions (unless otherwise specified) Symbol VRelease2 VDetect2 VHYS2 Parameter VD2 Threshold Voltage VD2 Threshold Voltage VD2 Hysteresis Ta = 25℃ Condition Min VO5 rising VO5 falling - Typ Max 2.8 2.13 2.3 500 Units V 2.47 V mV Table 6-14 Voltage Detection2 Electrical Characteristics 2011-2012 Rev.1.3 Page 18 RN5T566A REV.1.3 6.6 UVLO (Under Voltage Lock Out) Electrical Characteristics When the system can not operate due to the low VCCL5 voltage, UVLO turns off the LDO5. 6.6.1 UVLO Block Diagram (for LDO5) VCCL5 Under Voltage UVLO (Always ON) Fig 6-8 UVLO Block Diagram Operating Conditions (unless otherwise specified) Symbol VL5Detect VL5HYS Parameter Under voltage lock Ta = 25℃ Condition Min Typ VCCL5 falling out threshold UVLO Hysteresis - Max Units 2.7 V 250 mV Table 6-15 UVLO Electrical Characteristics 6.7 Voltage Detection3 Function When the system can not operate due to the low VCCA voltage, VD3 turns off the system (LDO1~4 and DCDC1~2 are turned off.) 6.7.1 VD3 Block Diagram (for LDO1～4、DCDC1～2) VCCA Under Voltage (Power Off) VD3 (Always ON) Fig 6-9 VD3 Block Diagram Operating Conditions (unless otherwise specified) Symbol VRelease VDetect VHYS Parameter VD3 Threshold Voltage VD3 Threshold Voltage VD3 Hysteresis Ta = 25℃ Condition Min VCCA rising VCCA falling - Typ Max 2.8 -3% 2.7 100 Units V +3% V mV Table 6-16 VD3 Electrical Characteristics 2011-2012 Rev.1.3 Page 19 RN5T566A REV.1.3 6.8 Thermal Shut-down Circuit Electrical Characteristics The thermal shut-down circuit turns off the system (LDO1～4 and DC/DC1~2 are turned off, however, LDO5 is not affected.) and prevents the chip from damaging when overheating is detected. The thermal shut-down operates when LDO or DC/DC turns on. 6.8.1 Thermal Shut-down Block Diagram VCCA LDO1EXON LDO2EXON LDO3EXON LDO4EXON DC1EXON DC2EXON ON Thermal Shut-down Circuit Over Heat (Power Off) Fig 6-10 Thermal Shut-down Diagram Operating Conditions (unless otherwise specified) VCCA = 3.6V Symbol TDET TRET Parameter Detected Temperature Condition Min Typ Max Units - 130 140 150 ℃ Return Temperature - 100 110 120 ℃ Table 6-17 Thermal Shut-down Circuit Electrical Characteristics 2011-2012 Rev.1.3 Page 20 RN5T566A REV.1.3 7. Electrical Characteristics 7.1 Absolute Maximum Ratings Exposure to the condition exceeded Absolute Maximum Ratings may cause the permanent damages and affects the reliability and safety of both device and systems using the device. The functional operations cannot be guaranteed beyond specified values in the recommended conditions. Symbol Parameter Condition Rated value Units VCCabs Power Supply Voltage Pin = VCC* -0.3～6.5 V Vin Input Voltage Range -0.3～VCCA+0.3 V Vout Output Voltage Range -0.3～VCC_VO5*+0.3 V 3.125 W -55～+125 ℃ Package PD Allowable Dissipation Pin = LDO1EXON～LDO4EXON, DC1EXON～DC2EXON,DC2SEL Pin = VD1OUT,VD2OUT JEDEC substrate mounting state, Wind velocity 0m/s Ta=25°C Linear derating coefficient = 0.03125 W/°C Tstg Storage Temperature - *VCC_VO5 : LDO5_Output or Coin Battery Table 7-1 Absolute Maximum Ratings PD [W] 3.125 Linear derating coefficient =0.03125 [W/°C] 1.250 25 85 125 °C Fig 7-1 Maximum Package Allowable Dissipation 7.2 Recommendation of Operating Conditions Symbol Parameter Condition Min Typ Max Units VCC Power Supply Voltage Pin=VCC* 2.7 * 3.6 5.5 V Ta Temperature of Operation - -40 +85 ℃ * It is 2.7V±3%, because detection voltage of VD3 is 2.7V±3%. Table 7-2 Recommendation of Operation Conditions 2011-2012 Rev.1.3 Page 21 RN5T566A REV.1.3 7.3 DC Characteristics Unless otherwise specified, VCC*=3.6V, Ta=25℃ Symbol Parameter Vih “H” Input Voltage Vil “L” Input Voltage Vol “L” Output Voltage Istandby Condition Pin = LDO1EXON～LDO4EXON, DC1EXON～DC2EXON Min Typ 1.4 DC1EXON～DC2EXON,DC2SEL Pin = VD1OUT,VD2OUT, Iol=1mA *1 Current Units V Pin = LDO1EXON～LDO4EXON, Standby Consumption Max 8 0.4 V 0.2 V 20 µA Table 7-3 DC Characteristics Note*1: LDO1EXON～LDO4EXON,DC1EXON～DC2EXON = “L” UVLO and LDO5 are ON. 2011-2012 Rev.1.3 Page 22 RN5T566A REV.1.3 NOTICE 1. The products and the product specifications described in this Data Sheet are subject to change or discontinuation of production without notice for reasons such as improvement. Therefore, before deciding to use the products, please refer to Ricoh sales representatives for the latest information thereon. 2. This Data Sheet may not be copied or otherwise reproduced in whole or in part without prior written consent of Ricoh. 3. Please be sure to take any necessary formalities under relevant laws or regulations before exporting or otherwise taking out of your country the products or the technical information described herein. 4. The technical information described in this Data Sheet shows typical characteristics of and example application circuits for the products. The release of such information is not to be construed as a warranty of or a grant of license under Ricoh’s or any third party’s intellectual property rights or any other rights. 5. The products listed in this Data Sheet are intended and designed for use as general electronic components in standard applications (office equipment, computer equipment, measuring instruments, consumer electronic products, amusement equipment etc.). Those customers intending to use a product in an application requiring extreme quality and reliability, for example, in a highly specific application where the failure or miss-operation of the product could result in human injury or death (aircraft, space vehicle, nuclear reactor control system, traffic control system, automotive and transportation equipment, combustion equipment, safety devices, life support system etc.) should first contact us. 6. We are making our continuous effort to improve the quality and reliability of our products, but semiconductor products are likely to fail with certain probability. In order prevent any injury to persons or damages to property resulting from such failure, customers should be careful enough to incorporate safety measures in their design, such as redundancy feature, fire-containment feature, and fail-safe feature. We do not assume any liability or responsibility for any loss or damage arising from misuse or inappropriate use of the products. 7. Anti-radiation design is not implemented in the products described in this Data Sheet. 8. Please contact Ricoh sales representatives should you have any questions or comments concerning the products or the technical information. Aug 2012 © RICOH 2012 All materials on this document are protected by Japanese copyright laws, and other applicable laws and treaty provisions of countries throughout the world. Except for personal or non-commercial internal use, copying, modifying, reproducing in whole or part, transmitting, distributing, licensing, selling and publishing any of the materials is prohibited without obtaining prior written permission from RICOH. 2011-2012 Rev.1.3 Page 23