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TPS745-Q1

ACTIVE

Automotive 500-mA, low-IQ, high-PSRR, low-dropout (LDO) voltage regulator with power good

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Data sheet

TPS745-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 6 Vin (min) (V) 1.5 Iout (max) (A) 0.5 Output options Adjustable Output, Fixed Output 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, 5.5 Noise (µVrms) 53 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Wettable flanks package Thermal resistance θJA (°C/W) 55, 55.5 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 225 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 6 Vin (min) (V) 1.5 Iout (max) (A) 0.5 Output options Adjustable Output, Fixed Output 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, 5.5 Noise (µVrms) 53 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Wettable flanks package Thermal resistance θJA (°C/W) 55, 55.5 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 225 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 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
  • 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 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
  • Low thermal resistance:
    • DRV (6-pin WSON), RθJA = 80.3°C/W
    • DRB (8-pin VSON), RθJA = 55.5°C/W

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.

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.
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Technical documentation

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Type Title Date
* Data sheet TPS745-Q1 Automotive, 500-mA LDO With Power-Good in Small Wettable Flank WSON Packages datasheet (Rev. C) PDF | HTML 19 May 2022
Design guide Power Supply Design for Semidrive X9SP (X9HP Compatible) Using LP8752-Q1 and LP8756-Q1 (Rev. A) PDF | HTML 02 Jan 2025
Application brief Discrete Power Design for C2000™ PDF | HTML 15 Aug 2024
Functional safety information TPS745-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 20 Oct 2023
Product overview Mobileye EyeQ6L – Semi Discrete Power Tree PDF | HTML 05 Aug 2022
EVM User's guide TPS746EVM-009 Evaluation Module User's Guide 14 Mar 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

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User guide: PDF
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Test report: PDF
Reference designs

TIPA-020002 — Power supply design for Semidrive X9SP (X9HP compatible) using LP8752-Q1 and LP8756-Q1

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TIDA-020060 — Automotive power over data lines reference design for 100/1000Base-T1 Ethernet applications

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Test report: PDF
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Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
VSON (DRB) 8 Ultra Librarian
WSON (DRV) 6 Ultra Librarian
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