ZHCSHE2B
September 2017 – June 2018
TPS7A52-Q1
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
为射频组件供电
输出电压噪声与频率和输出电压间的关系
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
Load Transient Response
8.1.11
Reverse Current Protection Considerations
8.1.12
Power Dissipation (PD)
8.1.13
Estimating Junction Temperature
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
10.1.2
RTK Package—High CTE Mold Compound
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
参考设计
11.1.1.3
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
术语表
12
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
RGR|20
MPQF239A
RTK|20
MPQF160B
散热焊盘机械数据 (封装 | 引脚)
RGR|20
QFND242E
订购信息
zhcshe2b_oa
zhcshe2b_pm
10.2
Layout Example
Figure 50.
Example Layout
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