ZHCSPT0 June   2022 BQ25172

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Device Power Up from Input Source
        1. 7.3.1.1 ISET Pin Detection
        2. 7.3.1.2 TMR Pin Detection
        3. 7.3.1.3 VSET Pin Detection
        4. 7.3.1.4 Charger Power Up
      2. 7.3.2 Battery Charging Features
        1. 7.3.2.1 NiMH Battery Charging Profile
        2. 7.3.2.2 Charging Safety Timers
        3. 7.3.2.3 Battery Cold, Hot Temperature Qualification (TS Pin)
      3. 7.3.3 Status Outputs (STAT)
        1. 7.3.3.1 Charging Status Indicator (STAT)
      4. 7.3.4 Protection Features
        1. 7.3.4.1 Input Overvoltage Protection (VIN OVP)
        2. 7.3.4.2 Output Overvoltage Protection (BAT OVP)
        3. 7.3.4.3 Output Overcurrent Protection (BAT OCP)
        4. 7.3.4.4 Thermal Regulation and Thermal Shutdown (TREG and TSHUT)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown or Undervoltage Lockout (UVLO)
      2. 7.4.2 Sleep Mode
      3. 7.4.3 Active Mode
        1. 7.4.3.1 Standby Mode
      4. 7.4.4 Fault Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 NiMH Charger Design Example
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 第三方产品免责声明
    2. 11.2 接收文档更新通知
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 术语表
  12. 12Mechanical, Packaging, and Orderable Information

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6.5 Electrical Characteristics

3.0V < VIN < 18V and VIN > VOUT + VSLEEP, TJ = -40°C to +125°C, and TJ = 25°C for typical values (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
QUIESCENT CURRENTS
IQ_OUT Quiescent output current (OUT) OUT= 4.2V, IN floating or IN = 0V - 5V, Charge Disabled, TJ = 25 °C 0.350 0.6 µA
OUT= 4.2V, IN floating or IN = 0V - 5V, Charge Disabled, TJ < 105 °C 0.350 0.8 µA
IQ_OUT Quiescent output current (OUT) OUT = 8.4V, IN floating or IN = 0V - 14V, Charge Disabled, TJ = 25 °C 0.8 1.2 µA
OUT = 8.4V, IN floating or IN = 0V - 14V, Charge Disabled, TJ < 105 °C 0.8 1.5 µA
ISD_IN_TS Shutdown input current (IN) with charge disabled via TS pin IN = 5V, Charge Disabled (VTS < VTS_ENZ), no battery 80 110 µA
ISTANDBY_IN Standby input current (IN) with charge terminated IN = 5V, Charge Enabled, charge terminated 190 µA
ISTANDBY_IN Standby input current (IN) with charge terminated IN = 14V, Charge Enabled, charge terminated 230 µA
IQ_IN Quiescent input current (IN) IN = 5V, OUT = 3.8V, Charge Enabled, ICHG = 0A 0.45 0.6 mA
IQ_IN Quiescent input current (IN) IN = 14V, OUT = 7.6V, Charge Enabled, ICHG = 0A 0.45 0.6 mA
INPUT
VIN_OP IN operating range 3.0 18 V
VIN_LOWV IN voltage to start charging IN rising 3.05 3.09 3.15 V
VIN_LOWV IN voltage to stop charging IN falling 2.80 2.95 3.10 V
VSLEEPZ Exit sleep mode threshold IN rising, VIN - VOUT, OUT = 4V 95 135 175 mV
VSLEEP Sleep mode threshold hysteresis IN falling, VIN - VOUT, OUT = 4V 80 mV
VIN_OV VIN overvoltage rising threshold IN rising 18.1 18.4 18.7 V
VIN_OVZ VIN overvoltage falling threshold IN falling 18.2 V
CONFIGURATION PINS SHORT/OPEN PROTECTION
RISET_SHORT Resistor value considered short RISET below this at startup, charger does not initiate charge, power cycle or TS toggle to reset 350 Ω
RVSET_SHORT Resistor value considered short RVSET below this at startup, charger does not initiate charge, power cycle or toggle to reset 2.8 kΩ
RVSET_OPEN Resistor value considered open RVSET above this at startup, charger does not initiate charge, power cycle or toggle to reset 80 kΩ
RTMR_SHORT Resistor value considered short RTMR below this at startup, charger latches off, power cycle or TS toggle to reset 2.8 kΩ
RTMR_OPEN Resistor value considered open RTMR above this at startup, charger latches off, power cycle or TS toggle to reset 45 kΩ
BATTERY CHARGER
ICHG_RANGE Typical charge current regulation range 10 800 mA
KISET Charge current setting factor, ICHG = KISET / RISET 10mA < ICHG < 800mA 270 300 330 AΩ
ICHG_ACC Charge current accuracy RISET = 375Ω, OUT = 3.8V 720 800 880 mA
RISET = 600Ω, OUT = 3.8V 450 500 550 mA
RISET = 3.0kΩ, OUT = 3.8V 90 100 110 mA
RISET = 30kΩ, OUT = 3.8V 9 10 11 mA
VRECHG Battery recharge threshold, per cell  OUT falling, VSET configured for 2-cell 1.305 1.330 1.355 V
RON Charging path FET on-resistance IOUT = 400mA, TJ = 25°C 845 1000 mΩ
IOUT = 400mA, TJ = -40 - 125°C 845 1450 mΩ
BATTERY CHARGER PROTECTION
VOUT_OVP OUT overvoltage rising threshold, per cell  VOUT rising, TS normal 1.65 1.70 1.75 V
VOUT_OVP OUT overvoltage falling threshold, per cell  VOUT falling, TS normal 1.40 1.45 1.50 V
VOUT_OVP_TSCOOL OUT overvoltage rising threshold, per cell VOUT rising, TS in cool range 1.45 1.50 1.55 V
VOUT_OVP_TSCOOL OUT overvoltage falling threshold, per cell VOUT falling, TS in cool range 1.30 1.35 1.40 V
IOUT_OCP Output current limit threshold IOUT rising 0.9 1 1.1 A
TEMPERATURE REGULATION AND TEMPERATURE SHUTDOWN
TREG Typical junction temperature regulation 125 °C
TSHUT Thermal shutdown rising threshold Temperature increasing 150 °C
Thermal shutdown falling threshold Temperature decreasing 135 °C
BATTERY-PACK NTC MONITOR
ITS_BIAS TS nominal bias current 36.5 38 39.5 µA
VCOLD Cold temperature threshold TS pin voltage rising (approx. 0°C) 0.99 1.04 1.09 V
Cold temperature exit threshold TS pin voltage falling (approx. 4°C) 0.83 0.88 0.93 V
VCOOL Cool temperature threshold; VOUT_OVP reduced TS pin voltage rising (approx. 10°C) 650 680 710 mV
Cool temperature exit threshold; VOUT_OVP returns to normal TS pin voltage falling (approx. 13°C) 580 610 640 mV
VHOT Hot temperature threshold TS pin voltage falling (approx. 45°C) 176 188 200 mV
Hot temperature exit threshold TS pin voltage rising (approx. 40°C) 208 220 232 mV
VTS_ENZ Charge Disable threshold. Crossing this threshold shall shutdown IC TS pin voltage falling 40 50 60 mV
VTS_EN Charge Enable threshold. Crossing this threshold shall restart IC operation TS pin voltage rising 65 75 85 mV
VTS_CLAMP TS maximum voltage clamp TS pin open-circuit (float) 2.3 2.6 2.9 V
LOGIC OUTPUT PIN (STAT)
VOL Output low threshold level Sink current = 5mA 0.4 V
IOUT_BIAS High-level leakage current Pull up rail 3.3V 1 µA