ZHCSGR3C May 2017 – September 2021 BQ25606
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 说明（续）
- 6 Device Comparison Table
- 7 Pin Configuration and Functions
- 8 Specifications
-
9 Detailed Description
- 9.1 Overview
- 9.2 Functional Block Diagram
- 9.3
Feature Description
- 9.3.1 Device Power Up from Battery without Input Source
- 9.3.2 Power Up from Input Source
- 9.3.3 Boost Mode Operation From Battery
- 9.3.4 Power Path Management
- 9.3.5 Battery Charging Management
- 9.3.6 Status Outputs ( PG, STAT)
- 9.3.7 Protections
- 10Application and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
9.3.4.1 Narrow VDC Architecture
When the battery is below the minimum system voltage setting, the BATFET operates in linear mode (LDO mode), and the system is typically 180 mV above the minimum system voltage setting. As the battery voltage rises above the minimum system voltage, the BATFET is fully on and the voltage difference between the system and battery is the VDS of the BATFET.
When battery charging is disabled and above the minimum system voltage setting or charging is terminated, the system is always regulated at typically 50 mV above the battery voltage.
Figure 9-1 System
Voltage vs Battery Voltage