ZHCSDN8
March 2015
TPS51275B-1
PRODUCTION DATA.
1
特性
2
应用
3
说明
4
典型应用图
5
修订历史记录
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Switching Characteristics
7.8
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
PWM Operations
8.3.2
Adaptive On-Time and PWM Frequency Control
8.3.3
Light-Load Condition in Out-of-Audio Operation
8.3.4
Enable and Power Good
8.3.5
Soft-Start and Discharge
8.3.6
VREG5 and VREG3 Linear Regulators
8.3.7
VCLK for Charge Pump
8.3.8
Overcurrent Protection
8.3.9
Output Overvoltage and Undervoltage Protection
8.3.10
Undervoltage Lockout Protection
8.3.11
Over-Temperature Protection (OTP)
8.4
Device Functional Modes
8.4.1
D-CAP Mode
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
External Components Selection
9.2.2.1.1
Step 1. Determine the Value of R1 and R2
9.2.2.1.2
Step 2. Select the Inductor
9.2.2.1.3
Step 3. Select Output Capacitors
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.1.1
Placement
11.1.2
Routing (Sensitive Analog Portion)
11.1.3
Routing (Power portion)
11.2
Layout Example
12
器件和文档支持
12.1
器件支持
12.1.1
第三方产品免责声明
12.2
商标
12.3
静电放电警告
12.4
术语表
13
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
RUK|20
MPQF220D
散热焊盘机械数据 (封装 | 引脚)
RUK|20
QFND191D
订购信息
zhcsdn8_oa
5 修订历史记录
日期
修订版本
注释
2015 年 3 月
*
首次发布。