text.skipToContent text.skipToNavigation


Automotive 5V to 30V Dual LDO & Dual Synchronous Buck Controller


Package | PIN: DAP | 38
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $7.01
10-24 $6.31
25-99 $5.89
100-249 $5.28
250-499 $4.93
500-749 $4.29
750-999 $3.71
1000+ $3.64


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient OperatingTemperature
    • Device HBM ESD Classification Level 2
  • Input Operating Range 5 V to 30 V (VBAT)
  • Two, Adjustable Output Voltage, Step-Down Switching Voltage Regulators
  • External Clock Input
  • Soft-Start Control for Step-Down Regulators
  • Programmable, Linear Regulator (VSTBY), Low Quiescent Current (65 µA typ)
  • Programmable, Linear Regulator (VLR)
  • Overvoltage Detection and Shutdown
  • Protected, High-Side Drive Ouput (HSD)
  • Power-On Reset for Standby Regulator (VSTBY)
  • Serial Communication, I2C Interface
  • Low Voltage Warning Detection With Programmable Input Threshold (LVWIN, VBATW)
  • Enable Feature, Controls VBUCK 1
  • Programmable Power Good Delay Time (PGDLY) for VSTBY
  • Current-Limit and Independent Thermal Detection and Shutdown Protection on All Regulators and High-Side Driver Output
  • Thermally Enhanced 38-Pin DAP PowerPAD™ Package

All trademarks are the property of their respective owners.

Texas Instruments  TPS43331QDAPRQ1

The TPS43331-Q1 is a multi-rail output voltage regulator, with two synchronous switchmode controllers and two linear regulators. In addition, there is a reverse protected high sideswitch and voltage supervisor for monitoring the standby regulator and input voltage. The regulatoroutputs and high side switch are controlled either by discrete inputs for certain outputs andserial interface using the I2C configuration for outputs not controlledby discrete inputs.

The standby linear regulator (VSTBY) is high voltage tolerant and can be connecteddirectly to the vehicle battery, the quiescent current is typically 65 µA to maintain a regulatedoutput with light loads.