JAJSOL2
August 2024
TPS55287
PRODUCTION DATA
1
1
特長
2
アプリケーション
3
概要
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
I2C Timing Characteristics
5.7
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
VCC Power Supply
6.3.2
EXTVCC Power Supply
6.3.3
Operation Mode Setting
6.3.4
Input Undervoltage Lockout
6.3.5
Enable and Programmable UVLO
6.3.6
Soft Start
6.3.7
Shutdown and Load Discharge
6.3.8
Switching Frequency
6.3.9
Switching Frequency Dithering
6.3.10
Inductor Current Limit
6.3.11
Internal Charge Path
6.3.12
Output Voltage Setting
6.3.13
Output Current Monitoring and Cable Voltage Droop Compensation
6.3.14
Output Current Limit
6.3.15
Overvoltage Protection
6.3.16
Output Short Circuit Protection
6.3.17
Thermal Shutdown
6.4
Device Functional Modes
6.4.1
PWM Mode
6.4.2
Power Save Mode
6.5
Programming
6.5.1
Data Validity
6.5.2
START and STOP Conditions
6.5.3
Byte Format
6.5.4
Acknowledge (ACK) and Not Acknowledge (NACK)
6.5.5
Target Address and Data Direction Bit
6.5.6
Single Read and Write
6.5.7
Multiread and Multiwrite
6.6
Register Maps
6.6.1
REF Register (Address = 0h, 1h)
6.6.2
IOUT_LIMIT Register (Address = 2h) [reset = 11100100h]
6.6.3
VOUT_SR Register (Address = 3h) [reset = 00000001h]
6.6.4
VOUT_FS Register (Address = 4h) [reset = 00000011h]
6.6.5
CDC Register (Address = 5h) [reset = 11100000h]
6.6.6
MODE Register (Address = 6h) [reset = 00100000h]
6.6.7
STATUS Register (Address = 7h) [reset = 00000011h]
7
Application and Implementation
7.1
Application Information
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Switching Frequency
7.2.2.2
Output Voltage Setting
7.2.2.3
Inductor Selection
7.2.2.4
Input Capacitor
7.2.2.5
Output Capacitor
7.2.2.6
Output Current Limit
7.2.2.7
Loop Stability
7.2.3
Application Curves
8
Power Supply Recommendations
9
Layout
9.1
Layout Guidelines
9.2
Layout Example
10
Device and Documentation Support
10.1
Device Support
10.1.1
サード・パーティ製品に関する免責事項
10.2
ドキュメントの更新通知を受け取る方法
10.3
サポート・リソース
10.4
Trademarks
10.5
静電気放電に関する注意事項
10.6
用語集
11
Revision History
12
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
RYQ|21
MPQF641
サーマルパッド・メカニカル・データ
RYQ|21
QFND730
発注情報
jajsol2_oa
6
Detailed Description