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Automotive 500 mA, Low Iq, High PSRR, Low Dropout Ldo Voltage Regulator With Power Good P 8 Son

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TPS74534PQWDRBRQ1 General Description

The TPS745-Q1 is a 500-mA 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 TPS745-Q1 consumes low quiescent current and provides fast line and load transient performance.

The TPS745-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 TPS745-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 TPS745-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 TPS745-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 junction temperature: –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: 45 dB at 100 kHz
  • Output accuracy: ±0.85% (25°C), ±1.5% maximum
  • Power-good output options:
    • Open-drain and push-pull
  • Ultra-low dropout:
    • 160 mV (max) at 500 mA (3.3 VOUT)
  • Stable with a 1-µF or larger capacitor
  • Low IQ: 25 µA (typical), 1.5 µA (shutdown)
  • 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) 0.5
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, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.5, 1.7, 1.8, 2.2, 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, 55.5
Rating Automotive Load capacitance (min) (µF) 1
Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start, Wettable flanks package
Accuracy (%) 2 PSRR at 100 KHz (dB) 45
Dropout voltage (Vdo) (typ) (mV) 225 Operating temperature range (°C) -40 to 125
feature-type feature-number-of-outputs 1
feature-polarity Positive feature-accuracy-
feature-process-technology feature-output-type Adjustable|Fixed
feature-output-voltage-v 5.5 feature-maximum-output-current-a 0.5
feature-minimum-input-voltage-v 1.5 feature-maximum-input-voltage-v 6
feature-maximum-dropout-voltage-current-v feature-line-regulation
feature-load-regulation feature-maximum-power-dissipation-mw
feature-packaging feature-rad-hard
feature-pin-count 8 feature-supplier-package
feature-standard-package-name 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


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

  • UPS

  • EMS

  • 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


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Buying Guide

  • What is the lifespan of TPS74534PQWDRBRQ1?

    The lifespan of TPS74534PQWDRBRQ1 depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of TPS74534PQWDRBRQ1?

    You can find it with PDF Datasheet for TPS74534PQWDRBRQ1 on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of TPS74534PQWDRBRQ1?

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