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Automotive 300-mA 40-V voltage-tracking LDO with 4-mV tracking tolerance


Models (4)

Title Category Type Date
TPS7B4253 Unencrypted PSpice Transient Model PSpice Model ZIP 20 Sep 2017
TPS7B4253 TINA-TI Reference Design TINA-TI Reference Design TSC 12 Jun 2017
TPS7B4253 TINA-TI Transient Spice Model TINA-TI Spice Model ZIP 12 Jun 2017
TPS7B4253 PSpice Transient Model (Rev. C) PSpice Model ZIP 07 Mar 2017

Design kits & evaluation modules (2)

Name Part# Type
LDO Parallel Solution Evaluation Board with TPS7B4253-Q1 LDO-PARAL-DESG-EVM Evaluation Modules & Boards
TPS7B4253-Q1 tracking LDO regulator evaluation module TPS7B4253EVM Evaluation Modules & Boards

Reference designs

15-W System-Level Power Reference Design for Automotive Body Control Module

TIDA-00745 is a 14-W system-optimized (CISPR25 Class 4) SMPS design for an automotive body control module. All buck converters used in this design are switching at 2.1 MHz. 

The design is divided into four major blocks:

  1. EMI filter: Common mode and a differential filter for conducted EMI suppression
  2. (...)

View the Important Notice for reference designs covering authorized use, intellectual property matters and disclaimers.


Thermal calculator

Estimate the LDO IC temperature at your design conditions:
Part number
Vin  V
Vout  V
Iout  A
Ambient temp  °C
Package option
Voltage option
PCB construction
Enhanced Thermal = single thermal spreading plane of 1 oz Cu
Minimum Thermal = single thermal spreading plane of 1/2 oz Cu
View the user guide for more details.

Junction temperature vs. PCB copper coverage area
These are estimated power dissipation and thermal results.
Care must be taken to ensure that device junction temperature
does not exeed the maximum ratings as indicated in the datasheet.

This calculator uses the PCB copper area to estimate the device junction temperature. See notes on usage and calculation method.