SBVS395A
July 2022 – March 2026
TPS7A57
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
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
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Output Voltage Setting and Regulation
6.3.2
Low-Noise, Ultra-High Power-Supply Rejection Ratio (PSRR)
6.3.3
Programmable Soft-Start (NR/SS Pin)
6.3.4
Precision Enable and UVLO
6.3.5
Charge Pump Enable and BIAS Rail
6.3.6
Power-Good Pin (PG Pin)
6.3.7
Active Discharge
6.3.8
Thermal Shutdown Protection (TSD)
6.4
Device Functional Modes
6.4.1
Normal Operation
6.4.2
Dropout Operation
6.4.3
Disabled
6.4.4
Current-Limit Operation
7
Application and Implementation
7.1
Application Information
7.1.1
Precision Enable (External UVLO)
7.1.2
Undervoltage Lockout (UVLO) Operation
7.1.2.1
IN Pin UVLO
7.1.2.2
BIAS UVLO
7.1.2.3
Typical UVLO Operation
7.1.2.4
UVLO(IN) and UVLO(BIAS) Interaction
7.1.3
Dropout Voltage (VDO)
7.1.4
Input and Output Capacitor Requirements (CIN and COUT)
7.1.5
Recommended Capacitor Types
7.1.6
Soft-Start, Noise Reduction (NR/SS Pin), and Power-Good (PG Pin)
7.1.7
Optimizing Noise and PSRR
7.1.8
Adjustable Operation
7.1.9
Load Transient Response
7.1.10
Current Limit and Foldback Behavior
7.1.11
Charge Pump Operation
7.1.12
Sequencing
7.1.13
Power-Good Functionality
7.1.14
Output Impedance
7.1.15
Paralleling for Higher Output Current and Lower Noise
7.1.16
Current Mode Margining
7.1.17
Voltage Mode Margining
7.1.18
Power Dissipation (PD)
7.1.19
Estimating Junction Temperature
7.1.20
TPS7A57EVM-056 Thermal Analysis
7.1.20.1
TPS7A57 Transient Thermal Analysis
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.3
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Documentation Support
8.1.1
Related Documentation
8.2
Receiving Notification of Documentation Updates
8.3
Support Resources
8.4
Trademarks
8.5
Electrostatic Discharge Caution
8.6
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
10.1
Mechanical Data
Package Options
Mechanical Data (Package|Pins)
RTE|16
MPQF149D
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbvs395a_oa
sbvs395a_pm
Data Sheet
TPS7A57 5A, Low-V
IN
(0.7V), Low-Noise (2.1μV
RMS
), High-Accuracy (1%),
Ultra-Low Dropout (LDO) Voltage Regulator