ZHCSHB6A
November 2019 – March 2020
TPS7A53
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
为射频组件供电
为数字负载供电
4
修订历史记录
5
Pin Configuration and Functions
Pin 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
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Voltage Regulation Features
7.3.1.1
DC Regulation
7.3.1.2
AC and Transient Response
7.3.2
System Start-Up Features
7.3.2.1
Programmable Soft Start (NR/SS Pin)
7.3.2.2
Internal Sequencing
7.3.2.2.1
Enable (EN)
7.3.2.2.2
Undervoltage Lockout (UVLO) Control
7.3.2.2.3
Active Discharge
7.3.2.3
Power-Good Output (PG)
7.3.3
Internal Protection Features
7.3.3.1
Foldback Current Limit (ICL)
7.3.3.2
Thermal Protection (Tsd)
7.4
Device Functional Modes
7.4.1
Regulation
7.4.2
Disabled
7.4.3
Current Limit Operation
8
Application and Implementation
8.1
Application Information
8.1.1
Recommended Capacitor Types
8.1.1.1
Input and Output Capacitor Requirements (CIN and COUT)
8.1.1.2
Noise-Reduction and Soft-Start Capacitor (CNR/SS)
8.1.1.3
Feed-Forward Capacitor (CFF)
8.1.2
Soft Start and Inrush Current
8.1.3
Optimizing Noise and PSRR
8.1.4
Charge Pump Noise
8.1.5
Current Sharing
8.1.6
Adjustable Operation
8.1.7
Power-Good Operation
8.1.8
Undervoltage Lockout (UVLO) Operation
8.1.9
Dropout Voltage (VDO)
8.1.10
Device Behavior During Transition From Dropout Into Regulation
8.1.11
Load Transient Response
8.1.12
Reverse Current Protection Considerations
8.1.13
Power Dissipation (PD)
8.1.14
Estimating Junction Temperature
8.1.15
TPS7A52EVM Thermal Analysis
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Board Layout
10.2
Layout Example
11
器件和文档支持
11.1
器件支持
11.1.1
开发支持
11.1.1.1
评估模块
11.1.1.2
Spice 模型
11.1.2
器件命名规则
11.2
文档支持
11.2.1
相关文档
11.3
接收文档更新通知
11.4
社区资源
11.5
商标
11.6
静电放电警告
11.7
Glossary
12
机械、封装和可订购信息
1
特性
线路、负载和温度范围内的最大精度为 0.5%,有偏置
输出电压噪声:4.4µV
RMS
低压降:3A 电流时为 110mV(最大值,有偏置)
电源抑制比:
500kHz 时为 40dB
输入电压范围:
无偏置:1.4V 至 6.5V
有偏置:1.1V 至 6.5V
可调节输出电压范围:0.8V 至 5.2V
可调软启动浪涌控制
开漏电源正常状态 (PG) 输出
2.2mm × 2.5mm 12 引脚 VQFN 封装