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
11.5
静电放电警告
静电放电 (ESD) 会损坏这个集成电路。米6体育平台手机版_好二三四 (TI) 建议通过适当的预防措施处理所有集成电路。如果不遵守正确的处理和安装程序,可能会损坏集成电路。
ESD 的损坏小至导致微小的性能降级,大至整个器件故障。精密的集成电路可能更容易受到损坏,这是因为非常细微的参数更改都可能会导致器件与其发布的规格不相符。
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