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TPS7B4261-Q1 Automotive, 300mA, 40V, Voltage Tracking LDO With PG
SBVS458
January 2025
TPS7B4261-Q1
ADVANCE INFORMATION
CONTENTS
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TPS7B4261-Q1 Automotive, 300mA, 40V, Voltage Tracking LDO With PG
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
6.3.2
Reverse Current Protection
6.3.3
Power Good
6.3.4
Undervoltage Lockout
6.3.5
Thermal Protection
6.3.6
Current Limit
6.3.7
Output Short to Battery
6.4
Device Functional Modes
6.4.1
Normal Operation
6.4.2
Dropout Operation
6.4.3
Operation With VIN < 3.3V
6.4.4
Disable With ADJ and EN Controls
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
7.2.3
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
7.4.2
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
10.1
Mechanical Data
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DDA|8
MPDS092F
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbvs458_oa
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Data Sheet
TPS7B4261-Q1 Automotive, 300mA, 40V, Voltage Tracking LDO With PG
1
Features
AEC-Q100 qualified for automotive applications:
Temperature grade 1: –40°C to +125°C, T
A
Junction temperature: –40°C to +150°C, T
J
Wide input voltage range:
Absolute maximum range: –40V to 45V
Operating range: 3.3V to 40V
Wide output voltage range: 2V to 40V
Maximum output current: 300mA
Very tight output-tracking tolerance: 6mV (max)
Low dropout voltage: 330mV at 200mA
Independent enable pin functionality
Power-good functionality detects under- and overvoltage conditions
Low quiescent current at light load: 55μA
Stable over a wide range of ceramic output capacitor values:
C
OUT
range: 1μF to 100μF
ESR range: 1mΩ to 2Ω
Integrated protection features:
Reverse current protection
Reverse polarity protection
Overtemperature protection
Protection against output short circuit to ground and supply
Available in a low thermal resistance, 8-pin package:
HSOIC (DDA), R
θJA
= 48℃/W