SBVS370F May   2019  – September 2025 TPS7B81-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Device Enable (EN)
      2. 6.3.2 Undervoltage Shutdown
      3. 6.3.3 Current Limit
      4. 6.3.4 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Operation With VIN Lower Than 3V
      2. 6.4.2 Operation With VIN Larger Than 3V
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Power Dissipation
        1. 7.1.1.1 Estimating Junction Temperature
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Input Capacitor
        2. 7.2.2.2 Output Capacitor
      3. 7.2.3 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.5 Electrical Characteristics

over operating ambient temperature range, TJ = –40°C to +150°C, VIN = 14V, and 10µF ceramic output capacitor (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
SUPPLY VOLTAGE AND CURRENT (IN)
VINInput voltageVOUT(Nom) + V(Dropout)40V
I(SD) Shutdown current EN = 0V 0.3 1 µA
I(Q)Quiescent currentVIN = 6V to 40V, EN ≥ 2V,
IOUT = 0mA		1.93.5µA
VIN = 6V to 40V, EN ≥ 2V,
IOUT = 0.2mA		 DGN package 2.7 6.5
DRV and KVU packages2.74.5
V(IN, UVLO)VIN undervoltage detectionRamp VIN down until the output turns off2.7V
Hysteresis 200 mV
ENABLE INPUT (EN)
VILLogic-input low level0.7V
VIHLogic-input high level2V
IENEnable current10nA
REGULATED OUTPUT (OUT)
VOUTRegulated outputVIN = VOUT + V(Dropout) to 40V,
IOUT = 1mA to 150mA		–1.5%1.5%
V(Line-Reg)Line regulationVIN = 6V to 40V, IOUT = 10mA10mV
V(Load-Reg)Load regulationVIN = 14V, IOUT = 1mA to 150mADGN package20mV
DRV and KVU packages10
V(Dropout)Dropout voltage(1)VOUT = 5VIOUT = 150mADGN package270540mV
DRV and KVU packages325585
IOUT = 100mADGN package180350
DRV and KVU packages200390
VOUT = 3.3VIOUT = 150mADGN package650
DRV and KVU packages345675
IOUT = 100mA255450
IOUTOutput currentVOUT in regulation, VIN = 7V for the fixed 5V option, VIN = 5.8V for the fixed 3.3V option0150mA
I(CL)Output current limitVOUT short to 90% × VOUT180510690mA
PSRRPower-supply ripple rejectionV(Ripple) = 0.5VPP, IOUT = 10mA, frequency = 100Hz, COUT = 2.2µF60dB
OPERATING TEMPERATURE RANGE
T(SD)Junction shutdown temperature175°C
T(HYST)Hysteresis of thermal shutdown20°C
(1) Dropout is not valid for the 2.5V output because of the minimum input voltage limits.