SBVS439A
April 2024 – May 2025
TPS7B91
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
Wide Supply Range
6.3.2
Low Quiescent Current
6.3.3
Dropout Voltage (VDO)
6.3.4
Current Limit
6.3.5
Leakage Null Control Circuit
6.4
Device Functional Modes
6.4.1
Normal Operation
6.4.2
Dropout Operation
7
Application and Implementation
7.1
Application Information
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
External Capacitor Requirements
7.2.2.2
Input and Output Capacitor Requirements
7.2.2.3
Reverse Current
7.2.2.4
Power Dissipation (PD)
7.2.2.5
Estimating Junction Temperature
7.2.3
Application Curves
7.3
Best Design Practices
7.4
Power Supply Recommendations
7.5
Layout
7.5.1
Layout Guidelines
7.5.1.1
Power Dissipation
7.5.2
Layout Example
8
Device and Documentation Support
8.1
Device Support
8.1.1
Development Support
8.1.1.1
Evaluation Module
8.1.1.2
Spice Models
8.1.2
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
Package Options
Mechanical Data (Package|Pins)
DBV|5
MPDS018T
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbvs439a_oa
sbvs439a_pm
1
Features
Input voltage range: 2.5V to 40V
Output voltage range: 1.2V to 12V
Output current:
150
mA
Ultra-low I
Q
: 1.8μA at I
OUT
= 0mA
Stable with output capacitors ≥ 1.0μF
High PSRR:
70dB at 1kHz
43dB at 100kHz
Fold-back current limiting
Overtemperature protection
Package:
5-pin SOT-23 (DBV)
Operating junction temperature: –40°C to +125°C