TPS65381-Q1 (ACTIVE)

Multi-Rail Automotive Power Supply for Microcontrollers in Safety-Critical Applications


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Multi-Rail Power Supply Supporting Among Others
    • Texas Instruments TMS570LS Series 16-Bit or 32-Bit RISC Flash Microcontroller
  • Supply Rails
    • Input voltage range:
      • 5.8 V to 36 V (CAN, I/O, MCU Core, and Sensor-Supply Regulators Functional)
      • 4.5 V to 5.8 V (3.3-V I/O and MCU Core-Voltage Functional)
    • 6-V Asynchronous Switch-Mode Preregulator With Internal FET, 1.3-A Current-Limit, and Temperature Protection
    • 5-V (CAN) Supply Voltage, Linear Regulator With Internal FET, 350-mA Current-Limit, and Temperature Protection
    • 3.3-V or 5-V MCU I/O Voltage, Linear Regulator With Internal FET, 350-mA Current-Limit, and Temperature Protection
    • 0.8-V to 3.3-V Adjustable MCU Core Voltage, Linear Regulator Controller With External FET
    • Sensor Supply: Linear Tracking Regulator With Tracking Input, 100-mA Current-Limit, Temperature Protection, and Protection Against Short to Battery and Short to Ground
    • Charge Pump: Typ. 12 V Above Battery Voltage
  • Power Supply and System Monitoring
    • Independent Undervoltage and Overvoltage Monitoring on All Regulator Outputs, Battery Voltage, and Internal Supplies
    • Independent Bandgap Reference for Voltage Monitoring
    • Independent Voltage References for Regulator References and Voltage Monitoring. Voltage-Monitoring Circuitry With Separate Battery Voltage Input Pin
    • Self-Check on all Voltage Monitoring (During Power-Up and After Power-Up Initiated by External MCU)
    • Junction Temperature Sensing With Shutdown Thresholds
  • Microcontroller Interface
    • Open-Close Window or Question-Answer Watchdog Function
    • MCU Error-Signal Monitor (Supports TI TMS570 MCU Mode or Other MCUs with PWM-Like Signaling)
    • DIAGNOSTIC State for Performing Device Self-Tests, Diagnostics, and External Interconnect Checks
    • Safe-State for Device and System Protection on Error Event Detection
    • Clock Monitor for Internal Oscillators
    • Self-Tests for Analog- and Digital-Critical Circuits Executed With Every Device Power Up or Activated by External MCU in DIAGNOSTIC State
    • CRC on Non-Volatile Memory, Device, and System Configuration Registers
    • Reset circuit for MCU
    • Diagnostic Output Pin Allowing MCU to Observe Device Internal Analog and Digital Signals, Selectable Through Multiplexer
  • SPI
    • Configuring IC Registers
    • Watchdog Question-Answering
    • Diagnostic Readout
    • Compliant With 3.3-V and 5-V Logic Levels
  • Enable-Drive Output for Disabling Safing-Path or External Power-Stages on Any Detected System-Failure
  • Wake-Up Through IGNITION Pin or CAN WAKEUP Pin
  • Package: 32-Pin HTSSOP PowerPAD IC Package

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Power Management Multi-Channel IC (PMIC) Solutions

Regulated Outputs (#)
Processor Supplier
Processor Name
Vin (Min) (V)
Vin (Max) (V)
Vout (Max) (V)
Step-Up DC/DC Controller
Step-Down DC/DC Controller
Step-Up DC/DC Converter
Step-Down DC/DC Converter
Iout (Max) (A)
Iq (Typ) (mA)
Special Features
Operating Temperature Range (C)
Approx. Price (US$)
Texas Instruments    
Comm Control
Power Good
Thermal Shutdown
-40 to 125    
2.57 | 1ku    
Click Here