ZHCS384H November 2011 – July 2022 BQ24160 , BQ24160A , BQ24161 , BQ24161B , BQ24163 , BQ24168
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Charge Mode Operation
- 8.3.2 Battery Charging Process
- 8.3.3 Battery Detection
- 8.3.4 Dynamic Power Path Management (DPPM)
- 8.3.5 Input Source Connected
- 8.3.6 Battery Only Connected
- 8.3.7 Battery Discharge FET (BGATE)
- 8.3.8 DEFAULT Mode
- 8.3.9 Safety Timer and Watchdog Timer (BQ24160/BQ24161/BQ24161B/BQ24163 only)
- 8.3.10 D+, D– Based Adapter Detection for the USB Input (D+, D–, BQ24160/0A/3)
- 8.3.11 USB Input Current Limit Selector Input (PSEL, BQ24161/161B/168 only)
- 8.3.12 Hardware Chip Disable Input (CD)
- 8.3.13 LDO Output (DRV)
- 8.3.14 External NTC Monitoring (TS)
- 8.3.15 Thermal Regulation and Protection
- 8.3.16 Input Voltage Protection in Charge Mode
- 8.3.17 Charge Status Outputs (STAT, INT)
- 8.3.18 Good Battery Monitor
- 8.4 Device Functional Modes
- 8.5 Programming
- 8.6
Register Maps
- 8.6.1 Status/Control Register (READ/WRITE)
- 8.6.2 Battery/ Supply Status Register (READ/WRITE)
- 8.6.3 Control Register (READ/WRITE)
- 8.6.4 Control/Battery Voltage Register (READ/WRITE)
- 8.6.5 Vender/Part/Revision Register (READ only)
- 8.6.6 Battery Termination/Fast Charge Current Register (READ/WRITE)
- 8.6.7 VIN-DPM Voltage/ DPPM Status Register
- 8.6.8 Safety Timer/ NTC Monitor Register (READ/WRITE)
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
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机械数据 (封装 | 引脚)
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- RGE|24
订购信息
8.3.16.2 Input Voltage Based DPM
During normal charging process, if the input power source is not able to support the programmed or default charging current, the supply voltage decreases. Once the supply drops to VIN_DPM (default 4.2 V for both inputs), the input current limit is reduced to prevent further supply droop. When the IC enters this mode, the charge current is lower than the set value and the DPM_STATUS bit is set (Bit 5 in Register 05H). This feature provides IC compatibility with adapters with different current capabilities without a hardware change. Figure 8-6 shows the VIN–DPM behavior to a current-limited source. In this figure the input source has a 750-mA current limit and the charging is set to 750 mA. The SYS load is then increased to 1.2 A.
Figure 8-6 BQ24160
VIN-DPM