ZHCSQT5
July 2022
TPS7A57
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
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Output Voltage Setting and Regulation
7.3.2
Low-Noise, Ultra-High Power-Supply Rejection Ratio (PSRR)
7.3.3
Programmable Soft-Start (NR/SS Pin)
7.3.4
Precision Enable and UVLO
7.3.5
Charge Pump Enable and BIAS Rail
7.3.6
Power-Good Pin (PG Pin)
7.3.7
Active Discharge
7.3.8
Thermal Shutdown Protection (TSD)
7.4
Device Functional Modes
7.4.1
Normal Operation
7.4.2
Dropout Operation
7.4.3
Disabled
7.4.4
Current-Limit Operation
8
Application and Implementation
8.1
Application Information
8.1.1
Precision Enable (External UVLO)
8.1.2
Undervoltage Lockout (UVLO) Operation
8.1.2.1
IN Pin UVLO
8.1.2.2
BIAS UVLO
8.1.2.3
Typical UVLO Operation
8.1.2.4
UVLO(IN) and UVLO(BIAS) Interaction
8.1.3
Dropout Voltage (VDO)
8.1.4
Input and Output Capacitor Requirements (CIN and COUT)
8.1.5
Recommended Capacitor Types
8.1.6
Soft-Start, Noise Reduction (NR/SS Pin), and Power-Good (PG Pin)
8.1.7
Optimizing Noise and PSRR
8.1.8
Adjustable Operation
8.1.9
Load Transient Response
8.1.10
Current Limit and Foldback Behavior
8.1.11
Charge Pump Operation
8.1.12
Sequencing
8.1.13
Power-Good Functionality
8.1.14
Output Impedance
8.1.15
Paralleling for Higher Output Current and Lower Noise
8.1.16
Current Mode Margining
8.1.17
Voltage Mode Margining
8.1.18
Power Dissipation (PD)
8.1.19
Estimating Junction Temperature
8.1.20
TPS7A57EVM-081 Thermal Analysis
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Related Documentation
9.2
接收文档更新通知
9.3
支持资源
9.4
商标
9.5
Electrostatic Discharge Caution
9.6
术语表
10
Mechanical, Packaging, and Orderable Information
10.1
Mechanical Data
封装选项
机械数据 (封装 | 引脚)
RTE|16
MPQF149D
散热焊盘机械数据 (封装 | 引脚)
RTE|16
QFND525B
订购信息
zhcsqt5_oa
1
特性
输入电压范围:
无偏置:1.1V 至 6.0V
有偏置:0.7V 至 6.0V
输出电压噪声:2.45μV
RMS
整个线路、负载和温度范围内为 1%(最高)精度
低压降:75mV (5A)
电源抑制比 (5A):
1kHz 时为 100dB
10kHz 时为 78dB
100kHz 时为 60dB
在 1MHz 时为 36dB
出色负载瞬态响应:
±2mV,负载阶跃为 100mA 至 5A
可调输出电压范围:0.5V 至 5.2V
可调软启动浪涌控制
BIAS 电源轨:
内部电荷泵或 3V 至 11V 外部电源轨
可禁用内部电荷泵
开漏电源正常状态 (PG) 输出
封装:3mm × 3mm 16 引脚 WQFN
EVM R
θJA
:21.9°C/W
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