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TPS7B81 150-mA, 40-V, Ultra-Low-IQ, Low-Dropout Regulator
SBVS402
April 2020
TPS7B81
PRODUCTION DATA.
CONTENTS
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TPS7B81 150-mA, 40-V, Ultra-Low-IQ, Low-Dropout Regulator
1
Features
2
Applications
3
Description
Device Images
Typical Application Schematic
Quiescent Current vs Ambient Temperature (VOUT = 3.3 V)
4
Revision History
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Device Enable (EN)
7.3.2
Undervoltage Shutdown
7.3.3
Current Limit
7.3.4
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Operation With VIN Lower Than 3 V
7.4.2
Operation With VIN Larger Than 3 V
8
Application and Implementation
8.1
Application Information
8.1.1
Power Dissipation
8.1.1.1
Estimating Junction Temperature
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Input Capacitor
8.2.2.2
Output Capacitor
8.2.3
Application Curve
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Receiving Notification of Documentation Updates
11.2
Support Resources
11.3
Trademarks
11.4
Electrostatic Discharge Caution
11.5
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DRV|6
MPDS216E
DGN|8
MPDS046G
Thermal pad, mechanical data (Package|Pins)
DRV|6
QFND087M
DGN|8
PPTD362B
Orderable Information
sbvs402_oa
sbvs402_pm
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DATA SHEET
TPS7B81 150-mA, 40-V, Ultra-Low-IQ, Low-Dropout Regulator
1
Features
Wide input voltage range: 3 V to 40 V
Output current: 150 mA
Ultra-low quiescent current (I
Q
):
2.7 µA typical at light loads
4.5 µA maximum at light loads
Accuracy: 1.5% over line, load, and temperature
Typical dropout voltage: 180 mV at 100 mA
Wide enable voltage range: 2 V to V
IN
(40 V max)
Input voltage transient tolerance: 45 V
Fixed 5-V and 3.3-V output options
Current limit and thermal shutdown protection
Stable with a wide range of capacitors (1 µF to 200 µF)
(1)
Junction temperature range: –40°C to +150°C
High thermal performance packages:
DGN (8-pin HVSSOP), R
θJA
= 63.9°C/W
DRV (6-pin WSON), R
θJA
= 72.8°C/W
(1)
1.
See the output capacitor requirements in the
Recomended Operation Conditions
table
2
Applications
Smoke and heat detectors
Thermostats
Motion detectors (PIR, uWave, and so forth)
Cordless power tools
Appliance battery packs
Motor drives