ZHCSNR7A
March 2022 – August 2022
TPS55289
PRODUCTION DATA
1
特性
2
应用
3
说明
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
I2C Timing Characteristics
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
VCC Power Supply
7.3.2
EXTVCC Power Supply
7.3.3
Operation Mode Setting
7.3.4
Input Undervoltage Lockout
7.3.5
Enable and Programmable UVLO
7.3.6
Soft Start
7.3.7
Shutdown and Load Discharge
7.3.8
Switching Frequency
7.3.9
Switching Frequency Dithering
7.3.10
Inductor Current Limit
7.3.11
Internal Charge Path
7.3.12
Output Voltage Setting
7.3.13
Output Current Monitoring and Cable Voltage Droop Compensation
7.3.14
Output Current Limit
7.3.15
Overvoltage Protection
7.3.16
Output Short Circuit Protection
7.3.17
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
PWM Mode
7.4.2
Power Save Mode
7.5
Programming
7.5.1
Data Validity
7.5.2
START and STOP Conditions
7.5.3
Byte Format
7.5.4
Acknowledge (ACK) and Not Acknowledge (NACK)
7.5.5
Target Address and Data Direction Bit
7.5.6
Single Read and Write
7.5.7
Multiread and Multiwrite
7.6
Register Maps
7.6.1
REF Register (Address = 0h, 1h)
7.6.2
IOUT_LIMIT Register (Address = 2h) [reset = 11100100h]
7.6.3
VOUT_SR Register (Address = 3h) [reset = 00000001h]
7.6.4
VOUT_FS Register (Address = 4h) [reset = 00000011h]
7.6.5
CDC Register (Address = 5h) [reset = 11100000h]
7.6.6
MODE Register (Address = 6h) [reset = 00100000h]
7.6.7
STATUS Register (Address = 7h) [reset = 00000011h]
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Switching Frequency
8.2.2.2
Output Voltage Setting
8.2.2.3
Inductor Selection
8.2.2.4
Input Capacitor
8.2.2.5
Output Capacitor
8.2.2.6
Output Current Limit
8.2.2.7
Loop Stability
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
Device Support
11.1.1
第三方产品免责声明
11.2
接收文档更新通知
11.3
支持资源
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RYQ|21
MPQF641
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsnr7a_oa
7.3
Feature Description