Power Management IC for Security Camera System CXA3840WR Description CXA3840WR is the power management IC for security camera system. CXA3840WR has the optimized configuration for CCTV security camera system with CCD image sensor. The basic power stages required in CCTV security camera can be formed by CXA3840WR without any other ICs. Features ◆ Wide input voltage range ◆ Multiple output power supply for CCTV security camera system : 7 V to 25 V Switching Regulator : 1 ch Internal MOSFET switch 1 MHz High switching frequency LDO Regulator Charge pump driver : Voltage monitor Output sequence control : 5 ch 2 ch : 2 ch (output) secure DSP&AFE&CCD operation ◆ Thermal shut down ◆ Over current protections Package QFN 24 pin ( 4 mm × 4 mm ) 1 CXA3840WR Contents Description -------------------------------------------------------------------------------------------------------------------------------------------- 1 Features ----------------------------------------------------------------------------------------------------------------------------------------------- 1 Package ----------------------------------------------------------------------------------------------------------------------------------------------- 1 Contents ----------------------------------------------------------------------------------------------------------------------------------------------- 2 Block Diagram---------------------------------------------------------------------------------------------------------------------------------------- 3 Absolute Maximum Ratings ----------------------------------------------------------------------------------------------------------------------- 4 Recommended Operating Conditions ----------------------------------------------------------------------------------------------------------- 5 Typical Application----------------------------------------------------------------------------------------------------------------------------------- 5 Electrical Characteristics --------------------------------------------------------------------------------------------------------------------------- 6 1. Current Consumption (VIN) ------------------------------------------------------------------------------------------------------------- 6 2. Charge Pump Circuit --------------------------------------------------------------------------------------------------------------------- 6 3. Switching Regulator ---------------------------------------------------------------------------------------------------------------------- 7 4. LDO 1 --------------------------------------------------------------------------------------------------------------------------------------- 8 5. LDO 2 --------------------------------------------------------------------------------------------------------------------------------------- 8 6. LDO 3 --------------------------------------------------------------------------------------------------------------------------------------- 8 7. Voltage Monitor---------------------------------------------------------------------------------------------------------------------------- 9 8. LDO 4 --------------------------------------------------------------------------------------------------------------------------------------- 9 9. LDO 5 --------------------------------------------------------------------------------------------------------------------------------------- 9 10. Voltage Selector --------------------------------------------------------------------------------------------------------------------------10 11. VH and VL Output Voltage Settings --------------------------------------------------------------------------------------------------10 Sequence -------------------------------------------------------------------------------------------------------------------------------------------- 11 1. Start-up ------------------------------------------------------------------------------------------------------------------------------------ 11 2. Stop -----------------------------------------------------------------------------------------------------------------------------------------12 3. Thermal shut down and recovery -----------------------------------------------------------------------------------------------------13 Pin Configuration -----------------------------------------------------------------------------------------------------------------------------------14 Pin Description --------------------------------------------------------------------------------------------------------------------------------------14 Package Outline ------------------------------------------------------------------------------------------------------------------------------------15 Marking -----------------------------------------------------------------------------------------------------------------------------------------------16 2 CXA3840WR VSEL2 SW NC VIN VH VH_IN Block Diagram 24 23 22 21 20 19 LDO4 FB 1 to LDO4,5 LDO_IN1 REF SW REG TSD OSC LDO1 3 Vo2 4 LDO_IN2 5 VSEL1 17 C1P 16 C1N 15 PGND 14 C2P 13 C2N UVLO 2 Vo1 18 1/N LDO2 CONTROL LOGIC CP LDO3 6 VM2 VM1 Delay Delay 3 9 10 11 12 VL_IN GND VCP 8 VL 7 VM1 LDO5 VM2 Vo3 CXA3840WR Absolute Maximum Ratings Parameters Symbol Maximum Ratings Unit Power Supply Voltage VVIN - 0.3 to 28 V Feedback Voltage VFB - 0.3 to 6 V LDO_IN1 Voltage VLDO_IN1 - 0.3 to 6 V LDO_IN2 Voltage VLDO_IN2 - 0.3 to 6 V Vo1 Voltage VVo1 - 0.3 to 6 V Vo2 Voltage VVo2 - 0.3 to 6 V Vo3 Voltage VVo3 - 0.3 to 6 V VM1 Voltage VVM1 - 0.3 to 6 V VM2 Voltage VVM2 - 0.3 to 6 V VL_IN Voltage VVL_IN - 17 to 0.3 V VL Voltage VVL - 10 to 0.3 V VCP Voltage VVCP - 0.3 to 6 V C1P Voltage VC1P - 0.3 to 6 V C2P Voltage VC2P - 0.3 to 6 V C1N Voltage VC1N - 0.3 to 6 V C2N Voltage VC2N - 0.3 to 6 V VSEL1 Voltage VVSEL1 - 0.3 to 6 V VSEL2 Voltage VVSEL2 - 0.3 to 6 V VH_IN Voltage VVH_IN - 0.3 to 28 V VH Voltage VVH - 0.3 to 17 V SW terminal Voltage VSW - 0.3 to 30 V Power Dissipation PD *1 2100 *1 mW Operation Temperature Ta - 20 to +75 ˚C Junction Temperature Tj - 40 to +150 ˚C Storage Temperature Tstg - 40 to +150 ˚C *1 FR-4 114.3 mm × 76.2 mm × 1.6 mm 4 layer : 4 EIA/JEDEC CXA3840WR Recommended Operating Conditions Parameter Symbol Min. Typ. Max. Unit 7 12 25 V Power Supply Voltage VIN SW Inductor L1 3.9 10 18 μH SW Output Capacitor COSW 22 47 100 μF Phase Compensate Capacitor CFB 24 27 30 pF SW Feedback Resister1 R1 30 33 36 kΩ SW Feedback Resister2 R2 135 150 165 kΩ LDO1 Output Capacitor COV1 10 22 ― μF LDO2 Output Capacitor COV2 6.8 10 ― μF LDO3 Output Capacitor COV3 6.8 10 ― μF LDO4 Output Capacitor COVH 1 2.2 ― μF LDO5 Output Capacitor COVL 1 2.2 ― μF Typical Application VIN 7 to 25 V ( typ. 12 V ) GND Power GND VH COSW L2 COVH L1 R2 RLDO 1.2 V RDH 23 22 21 20 19 VH_IN 24 VH 1 FB (Top view) VSEL1 2 LDO_IN1 CVH_IN 18 DP4 DP3 DP2 CCP4 CCP3 CCP2 5 V or 3.3 V / 0V C1P 17 3 Vo1 C1N 16 PAD ( ) COV1 3.3 V(A) DP5 CVIN2 SW R1 DOSW 5 V or 3.3 V / 0V VSEL2 CFB CVIN1 VIN COUT NC 5.0 V 4 Vo2 PGND 15 COV2 5 LDO_IN2 C2P 14 6 Vo3 C2N 13 GND VCP R3 VL_IN R4 VL COV3 VM1 3.3 V(D) VM2 CLDO_IN2 7 8 9 10 11 12 XRST2 CCN3 CCN2 CCN1 DN3 DN2 DN1 CVCP XRST1 CVL_IN VL COVL 5 RDN DN4 DP1 CCP1 CXA3840WR Electrical Characteristics Ta = 25 ˚C, VVIN = 12 V unless otherwise noted. 1. Current Consumption (VIN) Parameter Current Consumption 2. Symbol Conditions VIN = 12 V, FB = 0.7 V, VCP = VLDO_IN1 = VLDO_IN2 = 5 V VVH_IN = 22 V, VVL_IN = -13 V VO1 to VO3,VH,VL = no load CCP1 to 5,CCN1 to 4 = no load IQ = IVIN+ IVCP+ ILDO_IN1+ I LDO_IN2+ IVH_IN+ IVL_IN IQ Min. Typ. Max. Unit ― 6 10 mA Charge Pump Circuit VVCP = 5 V, fTCP = 31 kHz, CCP1 to 5, CVH_IN, CCN1 to 4, CVL_IN = 10 μF, SBD:CRS03 or equivalent, unless otherwise noted. Parameter Symbol Conditions Min. Typ. Max. Unit UVLO Release Voltage VT_ON_CP VVCP L→H 2.8 3.3 3.8 V UVLO Detect Voltage VT_OFF_CP VVCP H→L 2.6 3.1 3.6 V RDSH IOC1P,IOC2P,IOC1N,IOC2N = -100 mA 0.5 1 2 Ω RDSL IOC1P,IOC2P,IOC1N,IOC2N = 100 mA 0.5 1 2 Ω Timing Frequency fTCP No load 27 31 35 kHz Soft Start Time Tss_cp ― 70 ― ms High-side Transistor On Resistance Low-side Transistor On Resistance ― ΔVVH_IN/ΔIO_CH IO_CP = 10 to 20 mA ― 60 ― V/A ΔVVL_IN/ΔIO_CN IO_CN = 10 to 20 mA ― 45 ― V/A VVH_IN IO_CP = 40 mA ― 22 ― V VVL_IN IO_CN = 30 mA, ― - 13 ― V Output Impedance Output Voltage 6 CXA3840WR 3. Switching Regulator Ta = 25 ˚C, VVIN = 12 V unless otherwise noted. Parameter Symbol Conditions Min. Typ. Max. Unit 6.4 6.6 6.8 V 6.15 6.35 6.55 V 200 250 ― mV [ UVLO ] UVLO Release Voltage VT_ON VIN = L → H UVLO Detect Voltage VT_OFF VIN = H → L Hysteresis VHYS ― [ Soft Start ] Soft Start Time Tss VFB = 0.85 V 2 4 8 ms Switching Frequency1 fOSC VFB = 0.8 V 900 1000 1100 kHz Switching Frequency2 fOSC_LOW VFB = 0.4 V 290 333 450 kHz Frequency variability (VIN) fDV VVIN = 7 to 25 V ― 1 ― % Ta = -20 to +75 ˚C ― 5 ― % [ Oscillator ] Frequency variability (Temp.) fDT [ Error Amplifier ] Reference Voltage VB ― - 3.0 % 0.9 + 3.0 % V Input Bias Current IB ― -0.1 ― 0.1 μA VB Output Voltage Line Regulation VB Output Voltage Temperature Coefficient [ PWM Comparator ] ΔVB VVIN = 7 to 25 V ― 0.2 ― mV ΔVB / Ta Ta = -20 to +75 ˚C ― ±50 ― p-pm/ ˚C Maximum Duty Cycle MaxDuty VFB = 0.8 V 85 90 ― % Minimum On Time tON_min ― 150 190 ns ― 0.45 0.7 Ω 1.6 2.0 2.4 A ― ― 1 μA ― [ SW Output ] Output On Resistance RON SW Current Limitation ILIM SW Leak Current ILEAK [ Thermal Shut Down ] Thermal Shut Down Detection Temperature Thermal Shut Down Release Temperature ISW = 1 A ― VVIN = 28 V, VSW = 0 V TTSD ― ― 168 ― ˚C TTSR ― ― 155 ― ˚C 7 CXA3840WR 4. LDO 1 VLDO_IN1 = VLDO_IN2 = 5 V Parameter Symbol Conditions Min. Typ. Max. Unit - 2.0 % 1.2 + 2.0 % V 400 800 ― mA Output Voltage VO1 IO1 = 200 mA Output Current IO1 VO1 × 0.9 Load Regulation ΔVO1 / IO1 IO1 = 1 to 400 mA ― 0.0025 0.0075 %/mA Ripple Rejection RR1 ― 45 ― dB Dropout Voltage ΔVIO1 Ein = 50 mVrms , f = 1 kHz, IO1 = 200 mA IO1 = 400 mA ― 0.4 0.8 V ― p-pm/ ˚C Output Voltage Temperature Coefficient 5. ΔVO1 / Ta Ta = -20 to +75 ˚C, IO1 = 200 mA ― ± 50 LDO 2 VLDO_IN1 = VLDO_IN2 = 5 V Parameter Symbol Conditions Min. Typ. Max. Unit - 1.5 % 3.3 + 1.5 % V 150 300 ― mA IO2 = 1 to 150 mA ― 0.005 0.014 %/mA RR2 Ein = 50 mVrms , f = 1 kHz, IO2 = 100 mA ― 45 ― dB ΔVIO2 IO2 = 150 mA ― 0.4 0.8 V ― p-pm/ ˚C Output Voltage VO2 IO2 = 100 mA Output Current IO2 VO2 × 0.9 Load Regulation ΔVO2 / IO2 Ripple Rejection Dropout Voltage Output Voltage Temperature Coefficient 6. ΔVO2 / Ta Ta = -20 to +75 ˚C / IO2 = 100 mA ― ± 50 LDO 3 VLDO_IN1 = VLDO_IN2 = 5 V Parameter Symbol Conditions Min. Typ. Max. Unit - 1.5 % 3.3 + 1.5 % V 250 500 ― mA IO3 = 1 to 250 mA ― 0.003 0.009 %/mA RR3 Ein = 50 mVrms , f = 1 kHz, IO3 = 150 mA ― 45 ― dB ΔVIO3 IO3 = 250 mA ― 0.4 0.8 V ― p-pm/ ˚C Output Voltage VO3 IO3 = 150 mA Output Current IO3 VO3 × 0.9 Load Regulation ΔVO3 / IO3 Ripple Rejection Dropout Voltage Output Voltage Temperature Coefficient ΔVO3 / Ta Ta = -20 to +75 ˚C / IO3 = 150 mA 8 ― ± 50 CXA3840WR 7. Voltage Monitor Parameter Threshold Voltage (Detection) Threshold Voltage (Release) Symbol Conditions Min. Typ. Max. Unit VDET Vo2,Vo3 increasing 3.00 3.05 3.10 V VREL Vo2,Vo3 decreasing 3.04 3.11 3.18 V 20 60 100 mV ― Threshold Difference |VDET -VREL| Threshold Voltage Temperature Coefficient ΔVDET / Ta Ta = -20 to +75 ˚C ― ±50 ― p-pm/ ˚C Delay Time 1 td1 VVH = ON → VM1 = H 4 5 ― ms Delay Time 2 td2 VM1 = H → VM2 = H 1 1.5 ― ms Leak Current ILEAK_VM VM1 = VM2 = 5 V 0 0.5 1.0 μA Output Current IOUT VM1 = VM2 = 0.5 V 4 7 ― mA Min. Typ. Max. Unit or - 1.5 % 12 + 1.5 % V or - 1.5 % 15 + 1.5 % V 8. LDO 4 VH_IN = 22 V Parameter Symbol Conditions IVH = 2 0 mA VSEL1 = L, VSEL2 = L VSEL1 = H, VSEL2 = H IVH = 20 mA VSEL1 = H, VSEL2 = L VSEL1 = L, VSEL2 = H Output Voltage VVH1 Output Voltage VVH2 Output Current IVH VVH × 0.9 40 85 ― mA Load Regulation ΔVVH / IVH IVH = 1 to 40 mA ― 0.005 0.015 %/mA Ripple Rejection RR4 Ein = 50 mVrms , f = 1 kHz, IVH = 20 mA ― 60 ― dB Dropout Voltage Output Voltage Temperature Coefficient OFF period Output Resistance ΔVIVH IVH = 40 mA ― 0.5 1.0 ΔVVH / Ta Ta = -20 to + 75 ˚C / IVH = 200 mA ― ±70 ― V p-pm/ ˚C RO_OFF4 VVIN = 0 V, VH_IN = 22 V 80 150 300 Ω Min. Typ. Max. Unit - 3.0 % -5 + 3.0 % V - 3.0 % -7 + 3.0 % V - 3.0 % - 7.5 + 3.0 % V 30 75 ― mA 9. LDO 5 VL_IN = -13 V Parameter Symbol Conditions Output Voltage VVL1 Output Voltage VVL2 Output Voltage VVL3 Output Current IVL IVL = 15 mA VSEL1 = L, VSEL2 = L IVL = 15 mA VSEL1 = H, VSEL2 = L or VSEL1 = H, VSEL2 = H IVL = 15 mA VSEL1 = L, VSEL2 = H VVL × 0.9 Load Regulation ΔVVL / IVL IVL = 1 to 30 mA ― 0.01 0.02 %/mA Ripple Rejection RR5 Ein = 50 mVrms , f = 1 kHz, IVL = 15 mA ― 35 ― dB Dropout Voltage ΔVIVL IVL = 30 mA ― 0.3 0.6 V Output Voltage Temperature Coefficient OFF period Output Resistance ΔVVL / Ta Ta = -20 to + 75 ˚C / IVL = 15 mA RO_OFF5 VVIN = 0 V, VL_IN = -13 V 9 ― ± 70 ― p-pm/ ˚C 100 200 400 Ω CXA3840WR 10. Voltage Selector VH_IN = 22 V, VL_IN = -13 V Parameter Symbol Conditions Min. Typ. Max. Unit VSEL1_L VSEL1_H ― 0 ― 0.5 V VSEL1 terminal High ― 1.6 ― ― V VSEL2 terminal Low VSEL2_L ― 0 ― 0.5 V VSEL2 terminal High VSEL2_H ― 1.6 ― ― V VSEL1 terminal Low 11. VH and VL Output Voltage Settings Parameter Voltage selector settings VVH VVL Unit Voltage Setting 1 VSEL1 = L, VSEL2 = L 12 - 5.0 V Voltage Setting 2 VSEL1 = H, VSEL2 = L 15 - 7.0 V Voltage Setting 3 VSEL1 = L, VSEL2 = H 15 - 7.5 V Voltage Setting 4 VSEL1 = H, VSEL2 = H 12 - 7.0 V 10 CXA3840WR Sequence 1. Start-up VT_ON VIN Buck converter output voltage VT_ON_CP ( VCP) TSS 1.0 V (typ.) VO1 (1.2 V) 3.11 V (typ.) VO2 (3.3 V) 3.11 V (typ.) VO3 (3.3 V) VM1 td1 VM2 >0 td2 VH_IN TSS_CP VH VL_IN VL 11 CXA3840WR 2. Stop VT_OFF VIN Buck converter output voltage ( VCP) VO1 (1.2 V) VO2 (3.3 V) 3.05 V (typ.) VO3 (3.3 V) 3.05 V (typ.) VM1 VM2 VH_IN VH >0 VL_IN >0 VL 12 CXA3840WR 3. Thermal shut down and recovery VIN TTSD TTSR TEMP Buck converter Output voltage ( VCP) VT_ON_CP TSS VO1 (1.2 V) 1.0 V (typ.) VO2 (3.3 V) 3.05 V (typ.) 3.11 V (typ.) VO3 (3.3 V) 3.05 V (typ.) 3.11 V (typ.) VM1 td1 >0 VM2 td2 VH_IN TSS_CP VH >0 VL_IN >0 VL 13 CXA3840WR Pin Configuration (TOP VIEW) Pin Description Pin Symbol Function 1 FB 2 LDO_IN1 LDO1 Input Voltage 3 Vo1 1.2 V Output Voltage 4 Vo2 3.3 V Output Voltage for Digital circuit 5 LDO_IN2 6 Vo3 3.3 V Output Voltage for Analog circuit 7 VM2 Voltage Monitor Output 2 ( Open Drain ) 8 VM1 Voltage Monitor Output 1 ( Open Drain ) 9 VL 10 VL_IN Low Voltage Input 11 GND GND 12 VCP Voltage Input for Charge pump 13 C2N Charge Pump Output2 N 14 C2P Charge Pump Output2 P 15 PGND 16 C1N Charge Pump Output1 N 17 C1P Charge Pump Output1 P 18 VSEL1 VH/VL Output Voltage Selector 1 19 VH_IN High Voltage Input 20 VH High Voltage (12 V/15 V) Output 21 VIN Supply voltage 22 NC 23 SW 24 VSEL2 PAD PAD Feedback Voltage LDO2/3 Input Voltage Low Voltage (- 5.0 / - 7.0 / - 7.5 V) Output GND ― Switch Output VH/VL Output Voltage Selector 2 NC (PAD should be connected to GND for heat radiation.) 14 CXA3840WR Package Outline 15 CXA3840WR Marking A3840 16 CXA3840WR Note Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. 17