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LDO Regulator Pos 2.9V 1A Automotive 6-Pin WSON EP T/R

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TPS74629PQWDRVRQ1 General Description

The TPS746-Q1 is a 1-A, ultra-low-dropout regulator (LDO) with power-good functionality. This device is available in a small 6-pin, 2-mm × 2-mm WSON package and a small 8-pin, 3-mm × 3-mm VSON package with wettable flanks to facilitate optical inspection. The TPS746-Q1 consumes low quiescent current and provides fast line and load transient performance.

The TPS746-Q1 is a flexible device for post-regulation by supporting an input voltage range from 1.5 V to 6.0 V and an externally adjustable output range of 0.55 V to 5.5 V. The device also features fixed output voltages for powering common voltage rails.

The TPS746-Q1 has a power-good (PG) output that monitors the voltage at the feedback pin to indicate the status of the output voltage. The EN input and PG output can be used for sequencing multiple power supplies in the system.

The TPS746-Q1 is stable with small ceramic output capacitors, allowing for a small overall solution size. A precision band-gap and error amplifier provides high accuracy of ±0.85% (max) at 25°C and ±1.5% (max) over temperature. This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS746-Q1 has an internal foldback current limit that helps reduce the thermal dissipation during short-circuit events.

Texas Instruments, Inc Inventory

Key Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Device operating junction temperature range:
    • –40°C to +150°C
  • Package:
    • 2-mm × 2-mm wettable flank WSON
    • 3-mm × 3-mm wettable flank VSON
  • Input voltage range: 1.5 V to 6.0 V
  • Output voltage range:
    • Fixed option: 0.65 V to 5.0 V
    • Adjustable option: 0.55 V to 5.5 V
  • High PSRR: 38 dB at 100 kHz
  • Output accuracy: ±0.85% typical, ±1.5% maximum
  • Power-good output options:
    • Open-drain or push-pull
  • Ultra-low dropout:
    • 265 mV (max) at 1 A (3.3 VOUT)
  • Stable with a 1-µF or larger capacitor
  • Low IQ: 25 µA (typical)
  • Active output discharge
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Low thermal resistance:
    • DRV (6-pin WSON), RθJA = 80.3°C/W
    • DRB (8-pin VSON), RθJA = 55.5°C/W
Texas Instruments, Inc Original Stock
Texas Instruments, Inc Inventory


Output options Adjustable Output, Fixed Output Iout (max) (A) 1
Vin (max) (V) 6 Vin (min) (V) 1.5
Vout (max) (V) 5.5 Vout (min) (V) 0.55
Fixed output options (V) 0.7, 1, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.5, 1.7, 1.8, 2.5, 2.8, 2.9, 3, 3.3, 3.4, 5 Noise (µVrms) 53
Iq (typ) (mA) 0.025 Thermal resistance θJA (°C/W) 55
TI functional safety category Functional Safety-Capable Rating Automotive
Load capacitance (min) (µF) 1 Regulated outputs (#) 1
Features Enable, Foldback Overcurrent protection, Power good, Wettable flanks package Accuracy (%) 0.85
PSRR at 100 KHz (dB) 45 Dropout voltage (Vdo) (typ) (mV) 190
Operating temperature range (°C) -40 to 125 feature-type LDO
feature-number-of-outputs 1 feature-polarity Positive
feature-accuracy- ±0.85 feature-process-technology
feature-output-type Fixed feature-output-voltage-v 2.9
feature-maximum-output-current-a 1 feature-minimum-input-voltage-v 1.5
feature-maximum-input-voltage-v 6 feature-maximum-dropout-voltage-current-v 0.31@1A
feature-line-regulation 2mV(Typ) feature-load-regulation 0.03V/A(Typ)
feature-maximum-power-dissipation-mw feature-packaging Tape and Reel
feature-rad-hard No feature-pin-count 6
feature-supplier-package WSON EP feature-standard-package-name SON
feature-cecc-qualified feature-esd-protection
feature-escc-qualified feature-military No
feature-aec-qualified Yes feature-aec-qualified-number AEC-Q100
feature-eccn-code EAR99 feature-svhc No
feature-svhc-exceeds-threshold No


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

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  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray


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TPS74629PQWDRVRQ1 Datasheet PDF

Preliminary Specification TPS74629PQWDRVRQ1 PDF Download


Buying Guide

  • What is the lifespan of TPS74629PQWDRVRQ1?

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