ZHCSGO5B June 2017 – March 2022 BQ25600 , BQ25600D
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 說明（續）
- 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 Power-On-Reset (POR)
- 8.3.2 Device Power Up from Battery without Input Source
- 8.3.3 Power Up from Input Source
- 8.3.4 Boost Mode Operation From Battery
- 8.3.5 Host Mode and Standalone Power Management
- 8.3.6 Power Path Management
- 8.3.7 Battery Charging Management
- 8.3.8 Protections
- 8.4 Device Functional Modes
- 8.5 Programming
- 8.6 Register Maps
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
8.4.4.4 QON Pin Operations
The QON pin incorporates two functions to control BATFET. QON is pulled up to VQON by an internal 200-kΩ pull-up resistor.
- BATFET Enable: A QON logic transition from high to low with longer than tSHIPMODE deglitch turns on BATFET to exit shipping mode. When exiting shipping mode, HIZ is enabled (EN_HIZ = 1) as well. HIZ can be disabled (EN_HIZ = 0) by the host after exiting shipping mode. OTG cannot be enabled (OTG_CONFIG = 1) until HIZ is disabled.
- BATFET Reset: When QON is driven to logic low by at least tQON_RST while adapter is not plugged in (and BATFET_DIS = 0), the BATFET is turned off for tBATFET_RST. The BATFET is re-enabled after tBATFET_RST duration. This function allows systems connected to SYS to have power-on-reset. This function can be disabled by setting BATFET_RST_EN bit to 0.
Figure 8-10 shows the sample external configurations for each.
Figure 8-10 QON Timing
Figure 8-11 QON Circuit