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TPS7A53B 3A, Low-Input Voltage, Low-Noise, High-Accuracy, Low-Dropout (LDO) Voltage Regulator
SBVS446A
August 2023 – January 2024
TPS7A53B
PRODUCTION DATA
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TPS7A53B 3A, Low-Input Voltage, Low-Noise, High-Accuracy, Low-Dropout (LDO) Voltage Regulator
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
Voltage Regulation Features
6.3.1.1
DC Regulation
6.3.1.2
AC and Transient Response
6.3.2
System Start-Up Features
6.3.2.1
Programmable Soft-Start (NR/SS Pin)
6.3.2.2
Internal Sequencing
6.3.2.2.1
Enable (EN)
6.3.2.2.2
Undervoltage Lockout (UVLO) Control
6.3.2.2.3
Active Discharge
6.3.2.3
Power-Good Output (PG)
6.3.3
Internal Protection Features
6.3.3.1
Foldback Current Limit (ICL)
6.3.3.2
Thermal Protection (Tsd)
6.4
Device Functional Modes
6.4.1
Regulation
6.4.2
Disabled
6.4.3
Current Limit Operation
7
Application and Implementation
7.1
Application Information
7.1.1
Recommended Capacitor Types
7.1.1.1
Input and Output Capacitor Requirements (CIN and COUT)
7.1.1.2
Noise-Reduction and Soft-Start Capacitor (CNR/SS)
7.1.1.3
Feed-Forward Capacitor (CFF)
7.1.2
Soft-Start and Inrush Current
7.1.3
Optimizing Noise and PSRR
7.1.4
Charge Pump Noise
7.1.5
Current Sharing
7.1.6
Adjustable Operation
7.1.7
Power-Good Operation
7.1.8
Undervoltage Lockout (UVLO) Operation
7.1.9
Dropout Voltage (VDO)
7.1.10
Device Behavior During Transition From Dropout Into Regulation
7.1.11
Load Transient Response
7.1.12
Reverse Current Protection Considerations
7.1.13
Power Dissipation (PD)
7.1.14
Estimating Junction Temperature
7.1.15
TPS7A53EVM 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
7.4.1.1
Board Layout
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Device Support
8.1.1
Device Nomenclature
8.2
Documentation Support
8.2.1
Related Documentation
8.3
Receiving Notification of Documentation Updates
8.4
Support Resources
8.5
Trademarks
8.6
Electrostatic Discharge Caution
8.7
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RPS|12
MPQF552
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbvs446a_oa
sbvs446a_pm
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TPS7A53B 3A, Low-Input Voltage, Low-Noise, High-Accuracy, Low-Dropout (LDO) Voltage Regulator