ZHCSNY0B
May 2020 – January 2023
BQ25798
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
说明(续)
6
Device Comparison
7
Pin Configuration and Functions
8
Specifications
8.1
Absolute Maximum Ratings
8.2
ESD Ratings
8.3
Recommended Operating Conditions
8.4
Thermal Information
8.5
Electrical Characteristics
8.6
Timing Requirements
8.7
Typical Characteristics
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Device Power-On-Reset
9.3.2
PROG Pin Configuration
9.3.3
Device Power Up from Battery without Input Source
9.3.4
Device Power Up from Input Source
9.3.4.1
Power Up REGN LDO
9.3.4.2
Poor Source Qualification
9.3.4.3
ILIM_HIZ Pin
9.3.4.4
Default VINDPM Setting
9.3.4.5
Input Source Type Detection
9.3.4.5.1
D+/D– Detection Sets Input Current Limit
9.3.4.5.2
HVDCP Detection Procedure
9.3.4.5.3
Connector Fault Detection
9.3.5
Dual-Input Power Mux
9.3.5.1
ACDRV Turn On Condition
9.3.5.2
VBUS Input Only
9.3.5.3
One ACFET-RBFET
9.3.5.4
Two ACFETs-RBFETs
9.3.6
Buck-Boost Converter Operation
9.3.6.1
Force Input Current Limit Detection
9.3.6.2
Input Current Optimizer (ICO)
9.3.6.3
Maximum Power Point Tracking for Small PV Panel
9.3.6.4
Pulse Frequency Modulation (PFM)
9.3.6.5
Device HIZ State
9.3.7
USB On-The-Go (OTG)
9.3.7.1
OTG Mode to Power External Devices
9.3.7.2
Backup Power Supply Mode
9.3.7.3
Backup Mode with Dual Input Mux
9.3.8
Power Path Management
9.3.8.1
Narrow VDC Architecture
9.3.8.2
Dynamic Power Management
9.3.9
Battery Charging Management
9.3.9.1
Autonomous Charging Cycle
9.3.9.2
Battery Charging Profile
9.3.9.3
Charging Termination
9.3.9.4
Charging Safety Timer
9.3.9.5
Thermistor Qualification
9.3.9.5.1
JEITA Guideline Compliance in Charge Mode
9.3.9.5.2
Cold/Hot Temperature Window in OTG Mode
9.3.10
Integrated 16-Bit ADC for Monitoring
9.3.11
Status Outputs ( STAT, and INT)
9.3.11.1
Charging Status Indicator (STAT Pin)
9.3.11.2
Interrupt to Host ( INT)
9.3.12
Ship FET Control
9.3.12.1
Shutdown Mode
9.3.12.2
Ship Mode
9.3.12.3
System Power Reset
9.3.13
Protections
9.3.13.1
Voltage and Current Monitoring
9.3.13.1.1
VAC Over-voltage Protection (VAC_OVP)
9.3.13.1.2
VBUS Over-voltage Protection (VBUS_OVP)
9.3.13.1.3
VBUS Under-voltage Protection (POORSRC)
9.3.13.1.4
System Over-voltage Protection (VSYS_OVP)
9.3.13.1.5
System Short Protection (VSYS_SHORT)
9.3.13.1.6
Battery Over-voltage Protection (VBAT_OVP)
9.3.13.1.7
Battery Over-current Protection (IBAT_OCP)
9.3.13.1.8
Input Over-current Protection (IBUS_OCP)
9.3.13.1.9
OTG Over-voltage Protection (OTG_OVP)
9.3.13.1.10
OTG Under-voltage Protection (OTG_UVP)
9.3.13.2
Thermal Regulation and Thermal Shutdown
9.3.14
Serial Interface
9.3.14.1
Data Validity
9.3.14.2
START and STOP Conditions
9.3.14.3
Byte Format
9.3.14.4
Acknowledge (ACK) and Not Acknowledge (NACK)
9.3.14.5
Target Address and Data Direction Bit
9.3.14.6
Single Write and Read
9.3.14.7
Multi-Write and Multi-Read
9.4
Device Functional Modes
9.4.1
Host Mode and Default Mode
9.4.2
Register Bit Reset
9.5
Register Map
9.5.1
I2C Registers
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
PV Panel Selection
10.2.2.2
Inductor Selection
10.2.2.3
Input (VBUS / PMID) Capacitor
10.2.2.4
Output (VSYS) Capacitor
10.2.3
Application Curves
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Device Support
13.1.1
第三方米6体育平台手机版_好二三四免责声明
13.2
Documentation Support
13.2.1
Related Documentation
13.3
接收文档更新通知
13.4
支持资源
13.5
Trademarks
13.6
静电放电警告
13.7
术语表
14
Mechanical, Packaging, and Orderable Information
13.7
术语表
TI 术语表
本术语表列出并解释了术语、首字母缩略词和定义。
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