ZHCSIF0N September   2008  – October 2021 BQ24072 , BQ24073 , BQ24074 , BQ24075 , BQ24079

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 说明（续）
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings (1)
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Undervoltage Lockout (UVLO)
      2. 9.3.2 Power On
      3. 9.3.3 Overvoltage Protection (OVP)
      4. 9.3.4 Dynamic Power Path Management
        1. 9.3.4.1 Input Source Connected (ADAPTER or USB)
          1. 9.3.4.1.1 Input DPM Mode (VIN-DPM)
          2. 9.3.4.1.2 DPPM Mode
          3. 9.3.4.1.3 Battery Supplement Mode
        2. 9.3.4.2 Input Source Not Connected
      5. 9.3.5 Battery Charging
        1. 9.3.5.1 Charge Current Translator
        2. 9.3.5.2 Adjustable Termination Threshold (ITERM Input, BQ24074)
        3. 9.3.5.3 Termination Disable (TD Input, BQ24072, BQ24073)
        4. 9.3.5.4 Battery Detection and Recharge
        5. 9.3.5.5 Battery Disconnect (SYSOFF Input, BQ24075, BQ24079)
        6. 9.3.5.6 Dynamic Charge Timers (TMR Input)
        7. 9.3.5.7 Status Indicators ( PGOOD, CHG)
        8. 9.3.5.8 Thermal Regulation and Thermal Shutdown
      6. 9.3.6 Battery Pack Temperature Monitoring
    4. 9.4 Device Functional Modes
      1. 9.4.1 Sleep Mode
      2. 9.4.2 Explanation of Deglitch Times and Comparator Hysteresis
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 BQ2407x Charger Design Example
          1. 10.2.2.1.1 Termination Disable (TD) (BQ24072, BQ24073 only)
          2. 10.2.2.1.2 System ON/OFF (SYSOFF) (BQ24075 or BQ24079 only)
        2. 10.2.2.2 Calculations
          1. 10.2.2.2.1 Program the Fast Charge Current (ISET):
          2. 10.2.2.2.2 Program the Input Current Limit (ILIM)
          3. 10.2.2.2.3 Program the Termination Current Threshold (ITERM) (BQ24074 only)
          4. 10.2.2.2.4 Program 6.25-hour Fast-Charge Safety Timer (TMR)
        3. 10.2.2.3 TS Function
        4. 10.2.2.4 CHG and PGOOD
        5. 10.2.2.5 Selecting IN, OUT, and BAT Pin Capacitors
      3. 10.2.3 Application Curves
    3. 10.3 System Examples
      1. 10.3.1 Standalone Charger
      2. 10.3.2 Disconnecting the Battery From the System
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Considerations
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 第三方产品免责声明
    2. 13.2 接收文档更新通知
    3. 13.3 支持资源
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 术语表
  14. 14Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

8.5 Electrical Characteristics

Over junction temperature range (0° ≤ TJ ≤ 125°C) and the recommended supply voltage range (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
INPUT
UVLOUndervoltage lock-outVIN: 0 V → 4 V3.23.33.4V
VhysHysteresis on UVLOVIN: 4 V → 0 V200300mV
VIN(DT)Input power detection thresholdInput power detected when VIN > VBAT + VIN(DT)
VBAT = 3.6 V, VIN: 3.5 V → 4 V		5580130mV
VhysHysteresis on VIN(DT)VBAT = 3.6 V, VIN: 4 V → 3.5 V20mV
tDGL(PGOOD)Deglitch time, input power detected statusTime measured from VIN: 0 V → 5 V 1 μs
rise-time to PGOOD = LO		1.2ms
VOVPInput overvoltage protection thresholdVIN: 5 V → 7 V(’72, ’73, ’75, '79)6.46.66.8V
VIN: 5 V → 11 V(’74)10.210.510.8
VhysHysteresis on OVPVIN: 7 V → 5V(’72, ’73, ’75, '79)110mV
VIN: 11 V → 5 V(’74)175
tDGL(OVP)Input overvoltage blanking time (OVP fault deglitch)50μs
tRECInput overvoltage recovery timeTime measured from VIN: 11 V → 5 V with 1 μs
fall-time to PGOOD = LO		1.2ms
ILIM, ISET SHORT-CIRCUIT DETECTION (CHECKED DURING STARTUP)
ISCCurrent sourceVIN > UVLO and VIN > VBAT + VIN(DT)1.3mA
VSCVIN > UVLO and VIN > VBAT + VIN(DT)520mV
QUIESCENT CURRENT
IBAT(PDWN)Sleep current into BAT pinCE = LO or HI, input power not detected,
No load on OUT pin, TJ = 85°C		4.36.5μA
IINStandby current into IN pinEN1= HI, EN2=HI, VIN = 6 V, TJ= 85°C41.350μA
EN1= HI, EN2=HI, VIN = 10 V, TJ= 85°C99.8200
ICCActive supply current, IN pinCE = LO, VIN = 6 V, no load on OUT pin,
VBAT > VBAT(REG), (EN1, EN2) ≠ (HI, HI)		1.11.5mA
POWER PATH
VDO(IN-OUT)VIN – VOUTVIN = 4.3 V, IIN = 1 A, VBAT = 4.2 V300475mV
VDO(BAT-OUT)VBAT – VOUTIOUT = 1 A, VIN = 0 V, VBAT > 3 V50100mV
VO(REG)OUT pin voltage regulation (BQ24072)VIN > VOUT + VDO(IN-OUT), VBAT < 3.2 V3.33.43.5V
VIN > VOUT + VDO(IN-OUT), VBAT ≥ 3.2 VVBAT + 150mVVBAT + 225mVVBAT + 270mV
OUT pin voltage regulation (BQ24073, BQ24074)VIN > VOUT + VDO(IN-OUT)4.34.44.5
OUT pin voltage regulation (BQ24075, BQ24079)VIN > VOUT + VDO(IN-OUT)5.45.55.6
IINmaxMaximum input currentEN1 = LO, EN2 = LO9095100mA
EN1 = HI, EN2 = LO450475500
EN2 = HI, EN1 = LOKILIM/RILIMA
KILIMMaximum input current factorILIM = 500 mA to 1.5 A150016101720AΩ
ILIM = 200 mA to 500 mA133015251720
IINmaxProgrammable input current limit rangeEN2 = HI, EN1 = LO, RILIM = 8 kΩ to 1.1 kΩ2001500mA
VIN-DPMInput voltage threshold when input current is reducedEN2 = LO, EN1 = X4.354.54.63V
VDPPMOutput voltage threshold when charging current is reduced(’72, ’73, ’74)VO(REG) – 180mVVO(REG) – 100mVVO(REG) – 30mVV
(’75, '79)4.24.34.4V
VBSUP1Enter battery supplement modeVBAT = 3.6 V, RILIM = 1.5 kΩ, RLOAD = 10 Ω → 2 ΩVOUT ≤ VBAT –40mVV
VBSUP2Exit battery supplement modeVBAT = 3.6 V, RILIM = 1.5 kΩ, RLOAD = 2 Ω → 10 ΩVOUT ≥ VBAT–20mVV
VO(SC1)Output short-circuit detection threshold, power-onVIN > VUVLO and VIN > VBAT + VIN(DT)0.80.91V
VO(SC2)Output short-circuit detection threshold, supplement mode VBAT – VOUT > VO(SC2) indicates short-circuitVIN > VUVLO and VIN > VBAT + VIN(DT)200250300mV
tDGL(SC2)Deglitch time, supplement mode short circuit250μs
tREC(SC2)Recovery time, supplement mode short circuit60ms
BATTERY CHARGER
IBATSource current for BAT pin short-circuit detectionVBAT = 1.5 V47.511mA
VBAT(SC)BAT pin short-circuit detection thresholdVBAT rising1.61.82V
VBAT(REG)Battery charge voltage('72, '73, '74, '75)4.164.204.23V
('79)4.0594.1004.141
VLOWVPre-charge to fast-charge transition thresholdVIN > VUVLO and VIN > VBAT + VIN(DT)2.933.1V
tDGL1(LOWV)Deglitch time on pre-charge to fast-charge transition25ms
tDGL2(LOWV)Deglitch time on fast-charge to pre-charge transition25ms
ICHGBattery fast charge current rangeVBAT(REG) > VBAT > VLOWV, VIN = 5 V CE = LO,
EN1 = LO, EN2 = HI		1001500mA
Battery fast charge currentCE = LO, EN1= LO, EN2 = HI,
VBAT > VLOWV, VIN = 5 V, IINmax > ICHG, no load on OUT pin, thermal loop and DPPM loop not active		KISET/RISETA
KISETFast charge current factor797890975AΩ
IPRECHGPre-charge currentKPRECHG/RISETA
KPRECHGPre-charge current factor7088106AΩ
ITERMTermination comparator detection threshold (internally set)CE = LO, (EN1, EN2) ≠ (LO, LO),
VBAT > VRCH, t < tMAXCH, VIN = 5 V, DPPM loop and thermal loop not active		0.09×ICHG0.1×ICHG0.11×ICHGA
CE = LO, (EN1, EN2) = (LO, LO),
VBAT > VRCH, t < tMAXCH, VIN = 5 V, DPPM loop and thermal loop not active		0.027×ICHG0.033×ICHG0.040×ICHG
IBIAS(ITERM)Current for external termination-setting resistorVIN > VUVLO and VIN > VBAT + VIN(DT)727578μA
ITERMTermination current threshold (externally set) (BQ24074)KITERM × RITERM / RISETA
KITERMK Factor for termination detection threshold (externally set) (BQ24074)USB500 or ISET mode(EN1, EN2) ≠ (LO, LO)
CE = LO, VBAT > VRCH, t < tMAXCH, VIN = 5 V, DPPM loop and thermal loop not active		0.02250.03000.0375A
USB100 mode (EN1, EN2) = (LO, LO),
CE = LO, VBAT > VRCH, t < tMAXCH, VIN = 5 V, DPPM loop and thermal loop not active		0.0080.01000.012
tDGL(TERM)Deglitch time, termination detected25ms
VRCHRecharge detection thresholdVIN > VUVLO and VIN > VBAT + VIN(DT)VBAT(REG) –140mVVBAT(REG) –100mVVBAT(REG) –60mVV
tDGL(RCH)Deglitch time, recharge threshold detected62.5ms
tDGL(NO-IN)Delay time, input power loss to OUT LDO turn-offVBAT = 3.6 V. Time measured from
VIN: 5 V → 3 V 1 μs fall-time		20ms
IBAT(DET)Sink current for battery detectionVBAT = 2.5 V57.510mA
tDETBattery detection timerBAT high or low250ms
BATTERY CHARGING TIMERS
tPRECHGPre-charge safety timer valueTMR = floating144018002160s
tMAXCHGCharge safety timer valueTMR = floating144001800021600s
tPRECHGPre-charge safety timer value18 kΩ < RTMR < 72 kΩRTMR × KTMRs
tMAXCHGCharge safety timer value18 kΩ < RTMR < 72 kΩ10×RTMR ×KTMRs
KTMRTimer factor364860s/kΩ
BATTERY-PACK NTC MONITOR(1)
INTCNTC bias currentVIN > UVLO and VIN > VBAT + VIN(DT)727578μA
VHOTHigh temperature trip pointBattery charging, VTS Falling270300330mV
VHYS(HOT)Hysteresis on high trip pointBattery charging, VTS Rising from VHOT30mV
VCOLDLow temperature trip pointBattery charging, VTS Rising200021002200mV
VHYS(COLD)Hysteresis on low trip pointBattery charging, VTS Falling from VCOLD300mV
tDGL(TS)Deglitch time, pack temperature fault detectionTS fault detected to charger disable50ms
VDIS(TS)TS function disable threshold (BQ24072, BQ24073)TS unconnectedVIN - 200mVV
THERMAL REGULATION
TJ(REG)Temperature regulation limit125°C
TJ(OFF)Thermal shutdown temperatureTJ Rising155°C
TJ(OFF-HYS)Thermal shutdown hysteresis20°C
LOGIC LEVELS ON EN1, EN2, CE, SYSOFF, TD
VILLogic LOW input voltage00.4V
VIHLogic HIGH input voltage1.46V
IILInput sink currentVIL= 0 V1μA
IIHInput source currentVIH= 1.4 V10μA
LOGIC LEVELS ON PGOOD, CHG
VOLOutput LOW voltageISINK = 5 mA0.4V
(1) These numbers set trip points of 0°C and 50°C while charging, with 3°C hysteresis on the trip points, with a Vishay Type 2 curve NTC with an R25 of 10 kΩ.