ZHCS292H september   2009  – february 2021 BQ24040 , BQ24041 , BQ24045

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Operational Characteristics (Protection Circuits Waveforms)
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power-Down or Undervoltage Lockout (UVLO)
      2. 8.3.2 Power-up
      3. 8.3.3 Sleep Mode
      4. 8.3.4 New Charge Cycle
      5. 8.3.5 Overvoltage-Protection (OVP) – Continuously Monitored
      6. 8.3.6 Power Good Indication ( PG)
      7. 8.3.7 CHG Terminal Indication
    4. 8.4 Device Functional Modes
      1. 8.4.1  CHG and PG LED Pull-up Source
      2. 8.4.2  Auto Start-up (BQ24041)
      3. 8.4.3  IN-DPM (VIN-DPM or IN-DPM)
      4. 8.4.4  OUT
      5. 8.4.5  ISET
      6. 8.4.6  PRE_TERM – Pre-Charge and Termination Programmable Threshold, BQ24040/5
      7. 8.4.7  ISET2
      8. 8.4.8  TS (BQ24040/5)
      9. 8.4.9  Termination and Timer Disable Mode (TTDM) - TS Terminal High
      10. 8.4.10 Timers, BQ24040 and BQ24045 only
      11. 8.4.11 Termination
      12. 8.4.12 Battery Detect Routine
      13. 8.4.13 Refresh Threshold
      14. 8.4.14 Starting a Charge on a Full Battery
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Typical Application: BQ24040 and BQ24045
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Calculations
            1. 9.2.1.2.1.1 Program the Fast Charge Current, ISET:
            2. 9.2.1.2.1.2 Program the Termination Current Threshold, ITERM:
            3. 9.2.1.2.1.3 TS Function (BQ24040)
            4. 9.2.1.2.1.4 CHG and PG
          2. 9.2.1.2.2 Selecting In and Out Terminal Capacitors
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Typical Application Circuit: BQ24041, with ASI and ASO
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curves
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Thermal Considerations
      1. 11.3.1 Leakage Current Effects on Battery Capacity
  13. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 第三方产品免责声明
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 接收文档更新通知
    4. 12.4 支持资源
    5. 12.5 Trademarks
    6. 12.6 静电放电警告
    7. 12.7 术语表
  14. 13Mechanical, Packaging, and Orderable Information

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7.6 Timing Requirements

MINNOMMAXUNIT
INPUT
tDGL(PG_PWR)Deglitch time on exiting sleep.Time measured from VIN: 0V → 5V 1μs rise-time to PG = low, VOUT = 3.6V45μs
tDGL(PG_NO-PWR)Deglitch time on VHYS-INDT power down. Same as entering sleep.Time measured from VIN: 5V → 3.2V 1μs fall-time to PG = OC, VOUT = 3.6V29ms
tDGL(OVP-SET)Input over-voltage blanking timeVIN: 5V → 12V113μs
tDGL(OVP-REC)Deglitch time exiting OVPTime measured from VIN: 12V → 5V 1μs fall-time to PG = LO30μs
ISET SHORT CIRCUIT TEST
tDGL_SHORTDeglitch time transition from ISET short to IOUT disableClear fault by disconnecting IN or cycling (high / low) TS/ BAT_EN1ms
PRECHARGE – SET BY PRETERM PIN: BQ24040 / BQ24045; Internally Set: BQ24041
tDGL1(LOWV)Deglitch time on pre-charge to fast-charge transition70μs
tDGL2(LOWV)Deglitch time on fast-charge to pre-charge transition32ms
TERMINATION – SET BY PRE-TERM PIN: BQ24040 / BQ24045
tDGL(TERM)Deglitch time, termination detected29ms
tTerm-StartElevated termination threshold initially active for tTerm-Start1.25min
RECHARGE OR REFRESH – BQ24040 / BQ24045
tDGL1(RCH)Deglitch time, recharge threshold detectedVIN = 5V, VTS = 0.5V, VOUT: 4.25V → 3.5V in 1μs; tDGL(RCH) is time to ISET ramp29ms
tDGL2(RCH)Deglitch time, recharge threshold detected in OUT-Detect ModeVIN = 5V, VTS = 0.5V, VOUT = 3.5V inserted; tDGL(RCH) is time to ISET ramp3.6ms
BATTERY DETECT ROUTINE – BQ24040 / BQ24045 (NOTE: In Hot mode VO(REG) becomes VO_HT(REG))
tDGL(HI/LOW REG)Regulation time at VREG or VREG-BD25ms
BATTERY CHARGING TIMERS AND FAULT TIMERS: BQ24040 and BQ24045 only
tPRECHGPre-charge safety timer valueRestarts when entering Pre-charge; Always enabled when in pre-charge.170019402250s
tMAXCHCharge safety timer valueClears fault or resets at UVLO, TS/ BAT_EN disable, OUT Short, exiting LOWV and Refresh340003880045000s
BATTERY-PACK NTC MONITOR; TS Terminal: BQ24040 / BQ24045: 10k NTC
tDGL(TTDM)Deglitch exit TTDM between states57ms
Deglitch enter TTDM between states8μs
tDGL(TS_10C)Deglitch for TS thresholds: 10C.Normal to Cold Operation; VTS: 0.6V → 1V50ms
Cold to Normal Operation; VTS: 1V → 0.6V12ms
tDGL(TS)Deglitch for TS thresholds: 0/45/60C.Battery charging30ms