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TPS746-Q1

ACTIVE

Automotive 1-A, low-IQ, high-PSRR, low-dropout (LDO) voltage regulator with power good

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Data sheet

TPS746-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 6 Vin (min) (V) 1.5 Iout (max) (A) 1 Output options Adjustable Output, Fixed Output 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 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Features Enable, Foldback Overcurrent protection, Power good, Wettable flanks package Thermal resistance θJA (°C/W) 55 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 265 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 6 Vin (min) (V) 1.5 Iout (max) (A) 1 Output options Adjustable Output, Fixed Output 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 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Features Enable, Foldback Overcurrent protection, Power good, Wettable flanks package Thermal resistance θJA (°C/W) 55 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 265 Operating temperature range (°C) -40 to 125
VSON (DRB) 8 9 mm² 3 x 3 WSON (DRV) 6 4 mm² 2 x 2
  • 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:
    • 2mm × 2mm wettable flank WSON
    • 3mm × 3mm wettable flank VSON
  • Input voltage range: 1.5V to 6.0V
  • Output voltage range:
    • Fixed option: 0.65V to 5.0V
    • Adjustable option: 0.55V to 5.5V
  • High PSRR: 38dB at 100kHz
  • Output accuracy: ±0.85% typical, ±1.5% maximum
  • Power-good output options:
    • Open-drain or push-pull
  • Ultra-low dropout:
    • 265mV (max) at 1A (3.3VOUT)
  • Stable with a 1µF or larger capacitor
  • Low IQ: 25µA (typical)
  • Active output discharge
  • Functional Safety-Capable
  • Low thermal resistance:
    • DRV (6-pin WSON), RθJA = 80.3°C/W
    • DRB (8-pin VSON), RθJA = 55.5°C/W
  • 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:
    • 2mm × 2mm wettable flank WSON
    • 3mm × 3mm wettable flank VSON
  • Input voltage range: 1.5V to 6.0V
  • Output voltage range:
    • Fixed option: 0.65V to 5.0V
    • Adjustable option: 0.55V to 5.5V
  • High PSRR: 38dB at 100kHz
  • Output accuracy: ±0.85% typical, ±1.5% maximum
  • Power-good output options:
    • Open-drain or push-pull
  • Ultra-low dropout:
    • 265mV (max) at 1A (3.3VOUT)
  • Stable with a 1µF or larger capacitor
  • Low IQ: 25µA (typical)
  • Active output discharge
  • Functional Safety-Capable
  • Low thermal resistance:
    • DRV (6-pin WSON), RθJA = 80.3°C/W
    • DRB (8-pin VSON), RθJA = 55.5°C/W

The TPS746-Q1 is a 1A, ultra-low-dropout regulator (LDO) with power-good functionality. This device is available in a small 6-pin, 2mm × 2mm WSON package and a small 8-pin, 3mm × 3mm 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 1.5V to 6.0V and an externally adjustable output range of 0.55V to 5.5V. 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.

The TPS746-Q1 is a 1A, ultra-low-dropout regulator (LDO) with power-good functionality. This device is available in a small 6-pin, 2mm × 2mm WSON package and a small 8-pin, 3mm × 3mm 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 1.5V to 6.0V and an externally adjustable output range of 0.55V to 5.5V. 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.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS746-Q1 Automotive, 1A LDO With Power-Good in Small Wettable Flank Packages datasheet (Rev. D) PDF | HTML 14 Apr 2025
Application brief Discrete Power Design for C2000™ PDF | HTML 15 Aug 2024
Test report Power Delivery Reference Design for AMD Versal™ AI Edge Series PDF | HTML 25 Mar 2024
Functional safety information TPS746-Q1 Functional Safety FIT Rate, FMD and Pin FMEA PDF | HTML 10 Aug 2022

Design & development

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Evaluation board

TPS746EVM-009 — TPS746 adjustable 1-A LDO linear regulator with power good evaluation module

The TPS746EVM-009 evaluation module (EVM) is designed for a typical configuration to evaluate the operation and performance of the TPS746, which is a 1-A, low-Vin, low-dropout (LDO) voltage regulator with power good.

The EVM circuit board is configured to be a reference design for engineering (...)

User guide: PDF
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Reference designs

PMP23227 — Power delivery reference design for AMD Versal™ Edge AI series

This reference design demonstrates how the required power rails for the VE2302 device can be powered by TI's regulator ICs. AMD’s Minimum Rails power consolidation of supplies. See AMD’s Power Design Manager (PDM) tool, for all available power consolidation options. Use PDM when estimating power (...)
Test report: PDF
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VSON (DRB) 8 Ultra Librarian
WSON (DRV) 6 Ultra Librarian
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