ZHCSM97A
November 2020 – August 2021
TPS6521845
PRODUCTION DATA
1
特性
2
应用
3
说明
4
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Wake-Up and Power-Up and Power-Down Sequencing
7.3.1.1
Power-Up Sequencing
7.3.1.2
Power-Down Sequencing
7.3.1.3
Strobe 1 and Strobe 2
7.3.1.4
Supply Voltage Supervisor and Power-Good (PGOOD)
7.3.1.5
Backup Supply Power-Good (PGOOD_BU)
7.3.1.6
Internal LDO (INT_LDO)
7.3.1.7
Current Limited Load Switches
7.3.1.7.1
Load Switch 1 (LS1)
7.3.1.7.2
Load Switch 2 (LS2)
7.3.1.7.3
Load Switch 3 (LS3)
7.3.1.8
LDO1
7.3.1.9
Coin Cell Battery Voltage Acquisition
7.3.1.10
UVLO
7.3.1.11
Power-Fail Comparator
7.3.1.12
Battery-Backup Supply Power-Path
7.3.1.13
DCDC3 and DCDC4 Power-Up Default Selection
7.3.1.14
I/O Configuration
7.3.1.14.1
Configuring GPO2 as Open-Drain Output
7.3.1.14.2
Using GPIO3 as Reset Signal to DCDC1 and DCDC2
7.3.1.15
Push Button Input (PB)
7.3.1.15.1
Signaling PB-Low Event on the nWAKEUP Pin
7.3.1.15.2
Push Button Reset
7.3.1.16
AC_DET Input (AC_DET)
7.3.1.17
Interrupt Pin (INT)
7.3.1.18
I2C Bus Operation
7.4
Device Functional Modes
7.4.1
Modes of Operation
7.4.2
OFF
7.4.3
ACTIVE
7.4.4
SUSPEND
7.4.5
RESET
7.5
Register Maps
8
Application and Implementation
8.1
Application Information
8.1.1
Applications Without Battery Backup Supplies
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Output Filter Design
8.2.2.2
Inductor Selection for Buck Converters
8.2.2.3
Output Capacitor Selection
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Receiving Notification of Documentation Updates
11.3
支持资源
11.4
Trademarks
11.5
静电放电警告
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RSL|48
MPQF193A
散热焊盘机械数据 (封装 | 引脚)
RSL|48
QFND155N
订购信息
zhcsm97a_oa
7.3
Feature Description