SLUSDJ8A April   2020  – April 2021 BQ25170

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  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 VSET Pin Detection
        3. 7.3.1.3 Charger Power Up
      2. 7.3.2 Battery Charging Features
        1. 7.3.2.1 Lithium-Ion Battery Charging Profile
        2. 7.3.2.2 Charge Termination and Battery Recharge
        3. 7.3.2.3 Charging Safety Timers
        4. 7.3.2.4 Battery Cold, Hot Temperature Qualification (TS Pin)
      3. 7.3.3 Status Outputs ( PG, STAT)
        1. 7.3.3.1 Power Good Indicator (PG Pin)
        2. 7.3.3.2 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 Li-Ion Charger Design Example
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 TS Function
        3. 8.2.1.3 Application Curves
      2. 8.2.2 LiFePO4 Charger Design Example
        1. 8.2.2.1 Design Requirements
  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 Third-Party Products Disclaimer
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.5 Electrical Characteristics

3.0V < VIN < VIN_OV 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
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
IQ_IN Quiescent input current (IN) IN = 5V, OUT = 3.8V, Charge Enabled, ICHG = 0A 0.45 0.6 mA
INPUT
VIN_OP IN operating range 3.0 6.6 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 6.60 6.75 6.90 V
VIN_OVZ VIN overvoltage falling threshold IN falling 6.63 V
CONFIGURATION PINS SHORT/OPEN PROTECTION
RISET_SHORT Highest 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 Highest resistor value considered short RVSET below this at startup, charger does not initiate charge, power cycle or TS toggle to reset 2.8 kΩ
RVSET_OPEN Lowest resistor value considered open RVSET above this at startup, charger does not initiate charge, power cycle or TS toggle to reset 120 kΩ
BATTERY CHARGER
VDO Dropout voltage (VIN - VOUT) VIN falling, VOUT = 4.35V, IOUT = 500mA 425 mV
VREG_ACC OUT charge voltage regulation accuracy Tj = 25℃, all VSET settings –0.5 0.5 %
Tj = -40℃ to 125℃, all VSET settings –0.8 0.8 %
ICHG_RANGE Typical charge current regulation range VOUT > VBAT_LOWV 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
IPRECHG Typical pre-charge current, as percentage of ICHG VOUT < VBAT_LOWV 20 %
IPRECHG_ACC Precharge current accuracy RISET = 375Ω, OUT = 2.5V 144 160 176 mA
RISET = 600Ω, OUT = 2.5V 85 100 110 mA
RISET = 3.0kΩ, OUT = 2.5V 18 20 22 mA
RISET = 30kΩ, OUT = 2.5V 1.4 2 2.6 mA
ITERM Typical termination current, as percentage of ICHG VOUT = VREG 10 %
ITERM_ACC Termination current accuracy RISET = 600Ω, OUT = VREG = 4.2V 45 50 55 mA
RISET = 3.0kΩ, OUT = VREG = 4.2V 8.5 10 11.5 mA
RISET =30kΩ, OUT = VREG = 4.2V 0.4 1 1.6 mA
VBAT_SHORT Output (OUT) short circuit voltage rising threshold, for Li-Ion chemistry OUT rising, VSET configured for Li-Ion 2.1 2.2 2.3 V
VBAT_SHORT Output (OUT) short circuit voltage rising threshold, for LiFePO4 chemistry OUT rising, VSET configured for LiFePO4 1.1 1.2 1.3 V
VBAT_SHORT_HYS Output (OUT) short circuit voltage hysteresis OUT falling 200 mV
IBAT_SHORT OUT short circuit charging current VOUT < VBAT_SHORT 12 16 20 mA
VBAT_LOWV Pre-charge to fast-charge transition threshold, for Li-Ion chemistry OUT rising, VSET configured for Li-Ion 2.7 2.8 3.0 V
VBAT_LOWV Pre-charge to fast-charge transition threshold for Li-FePO4 chemistry OUT rising, VSET configured for LiFePO4 1.9 2.0 2.1 V
VBAT_LOWV_HYS Battery LOWV hysteresis OUT falling 100 mV
VRECHG Battery recharge threshold for Li-Ion chemistry OUT falling, VSET configured for Li-IonVREG_ACC - VOUT 75 100 125 mV
VRECHG Battery recharge threshold for LiFePO4 chemistry OUT falling, VSET configured for LiFePO4 , VREG_ACC - VOUT 175 200 225 mV
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 VOUT rising, as percentage of VSET 103 104 105 %
VOUT_OVP OUT overvoltage falling threshold VOUT falling, as percentage of VSET 101 102 103 %
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
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, PG)
VOL Output low threshold level Sink current = 5mA 0.4 V
IOUT_BIAS High-level leakage current Pull up rail 3.3V 1 µA