SBVS397A
September 2023 – November 2023
TPS7B4256-Q1
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
Tracker Output Voltage (VOUT)
6.3.1.1
Output Voltage Equal to Reference Voltage
6.3.1.2
Output Voltage Less Than the Reference Voltage
6.3.1.3
Output Voltage Larger Than the Reference Voltage
6.3.2
Reverse Current Protection
6.3.3
Undervoltage Lockout
6.3.4
Thermal Protection
6.3.5
Current Limit
6.3.6
Output Short to Battery
6.3.7
Tracking Regulator With an Enable Circuit
6.4
Device Functional Modes
6.4.1
Normal Operation
6.4.2
Dropout Operation
6.4.3
Operation With VIN < 3 V
6.4.4
Disable With ADJ/EN Control
7
Application and Implementation
7.1
Application Information
7.1.1
Dropout Voltage
7.1.2
Reverse Current
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Input and Output Capacitor Selection
7.2.2.2
Feedback Resistor Selection
7.2.2.3
Feedforward Capacitor
7.2.3
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.1.1
Package Mounting
7.4.1.2
Board Layout Recommendations to Improve PSRR and Noise Performance
7.4.1.3
Power Dissipation and Thermal Considerations
7.4.1.4
Thermal Performance Versus Copper Area
7.4.1.5
Layout Examples
8
Device and Documentation Support
8.1
Device Support
8.1.1
Device Nomenclature
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
Package Options
Mechanical Data (Package|Pins)
D|8
MSOI002K
DDA|8
MPDS092F
Thermal pad, mechanical data (Package|Pins)
DDA|8
PPTD058I
Orderable Information
sbvs397a_oa
sbvs397a_pm
7.4
Layout