ZHCSND4H january   2010  – april 2021 BQ24090 , BQ24091 , BQ24092 , BQ24093 , BQ24095

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 说明（续）
  7. 6 Device Options
  8. 7 Pin Configuration and Functions
  9. 8 Specifications
    1. 8.1 Absolute Maximum Ratings #GUID-9FC6FB05-10A6-4323-9A52-EE32AE4C5F67/SLUS9405873
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions #GUID-4D70561B-CB71-403D-B731-8EF5DEBEBDF9/SLUS9401392
    4. 8.4 Thermal Information
    5. 8.5 Dissipation Ratings #GUID-196940BE-C3C2-4CDF-A8A4-7C186292F803/SLUS9404025 #GUID-196940BE-C3C2-4CDF-A8A4-7C186292F803/SLUS9403553
    6. 8.6 Electrical Characteristics
    7. 8.7 Typical Characteristics
      1. 8.7.1 Power Up, Power Down, OVP, Disable and Enable Waveforms
      2. 8.7.2 Protection Circuits Waveforms
  10. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  Power Down or Undervoltage Lockout (UVLO)
      2. 9.3.2  UVLO
      3. 9.3.3  Power Up
      4. 9.3.4  Sleep Mode
      5. 9.3.5  New Charge Cycle
      6. 9.3.6  Overvoltage Protection (OVP) – Continuously Monitored
      7. 9.3.7  Power Good Indication ( PG)
      8. 9.3.8  CHG Pin Indication
      9. 9.3.9  CHG and PG LED Pullup Source
      10. 9.3.10 IN-DPM (VIN-DPM or IN–DPM)
      11. 9.3.11 OUT
      12. 9.3.12 ISET
      13. 9.3.13 PRE_TERM – Precharge and Termination Programmable Threshold
      14. 9.3.14 ISET2
      15. 9.3.15 TS
    4. 9.4 Device Functional Modes
      1. 9.4.1 Termination and Timer Disable Mode (TTDM) - TS Pin High
      2. 9.4.2 Timers
      3. 9.4.3 Termination
      4. 9.4.4 Battery Detect Routine
      5. 9.4.5 Refresh Threshold
      6. 9.4.6 Starting a Charge on a Full Battery
  11. 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 Calculations
          1. 10.2.2.1.1 Program the Fast Charge Current, ISET:
          2. 10.2.2.1.2 Program the Termination Current Threshold, ITERM:
          3. 10.2.2.1.3 TS Function
          4. 10.2.2.1.4 CHG and PG
        2. 10.2.2.2 Selecting IN and OUT Pin Capacitors
      3. 10.2.3 Application Curves
  12. 11Power Supply Recommendations
  13. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Considerations
      1. 12.3.1 Leakage Current Effects on Battery Capacity
  14. 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 静电放电警告
    6. 13.6 术语表
  15.   Mechanical, Packaging, and Orderable Information

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订购信息

7 Pin Configuration and Functions

GUID-20210217-CA0I-M274-BFNN-GSXRNTDLZBFG-low.gif Figure 7-1 DGQ Package10 PinsTop View
Table 7-1 Pin Functions
PIN I/O DESCRIPTION
NAME NO.
CHG 8 O Low (FET on) indicates charging and Open Drain (FET off) indicates no charging or charge complete.
IN 1 I Input power, connected to external DC supply (AC adapter or USB port). Expected range of bypass capacitors 1 μF to 10 μF, connect from IN to VSS.
ISET 2 I Programs the fast-charge current setting. External resistor from ISET to VSS defines fast charge current value. Range is 10.8 kΩ (50 mA) to 540 Ω (1000 mA).
ISET2 7 I Programming the input/output current limit for the USB or adaptor source:
high = 500 mA max, low = ISET, FLOAT = 100 mA max.
NC 6 NA Do not make a connection to this pin (for internal use) – do not route through this pin.
OUT 10 O Battery connection. System load may be connected. Average load should not be excessive, allowing battery to charge within the 10 hour safety timer window. Expected range of bypass capacitors 1 μF to 10 μF.
PG 5 O Low (FET on) indicates the input voltage is above UVLO and the OUT (battery) voltage.
PRE-TERM 4 I Programs the current termination threshold (5 to 50% of Iout which is set by ISET) and sets the pre-charge current to twice the termination current level.
Expected range of programming resistor is 1 kΩ to 10 kΩ (2k: Ipgm/10 for term; Ipgm/5 for precharge).
TS 9 I Temperature sense pin connected to BQ24090/2/5 -10k at 25°C NTC thermistor and BQ24091/3 -100 k at 25°C NTC thermistor, in the battery pack. Floating TS pin or pulling high puts part in TTDM Charger Mode and disable TS monitoring, timers and termination. Pulling pin low disables the IC. If NTC sensing is not needed, connect this pin to VSS through an external 10-kΩ/100-kΩ resistor. A 250 kΩ from TS to ground will prevent IC entering TTDM mode when battery with thermistor is removed.
VSS 3 – Ground terminal
Thermal Pad and Package — — There is an internal electrical connection between the exposed thermal pad and the VSS pin of the device. The thermal pad must be connected to the same potential as the VSS pin on the printed circuit board. Do not use the thermal pad as the primary ground input for the device. VSS pin must be connected to ground at all times.