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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

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) 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 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
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) 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 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
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
More literature Mobileye EyeQ6L – Semi Discrete Power Tree PDF | HTML 05 Aug 2022
Application note TPS745-Q1 Pin FMEA PDF | HTML 01 Sep 2020
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

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
Not available on TI.com
Reference designs

PMP30819 — Automotive power supply reference design with three outputs using PMIC and LDOs

This multioutput supply powers a custom ASIC out of 5-V input voltage via multichannel IC (PMIC) LP87653-Q1. Despite this PMIC having four rails, phase three is unused and 1.1 VA (where A equals analog for sensitive loads) is generated via low-dropout regulator (LDO) on customer demand. The LDO (...)
Test report: PDF
Reference designs

PMP30921 — 4-W discontinuous conduction mode primary-side regulated flyback reference design

This tiny 4-W flyback converter with additional three isolated-output windings generates four total outputs. By windings ratio 1:1 in between primary and auxiliary winding, the conventional RCD snubber can be replaced by an AC flying capacitor providing better efficiency and lower EMI This requires (...)
Test report: PDF
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PMP22650 — GaN-based, 6.6-kW, bidirectional, onboard charger reference design

The PMP22650 reference design is a 6.6-kW, bidirectional, onboard charger. The design employs a two-phase totem pole PFC and a full-bridge CLLLC converter with synchronous rectification. The CLLLC utilizes both frequency and phase modulation to regulate the output across the required regulation (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP22334 — High efficiency, low-noise 5-V/3.3-V/1.8-V/1.1-V automotive display reference design

This reference design is for an automotive display application with a customized form factor. The design demonstrates the excellent thermal performance of LM61460-Q1 with its HotRod™ QFN package as well as the low EMI aided by its spread spectrum feature. It generates four (...)
Test report: PDF
Schematic: PDF
Package Pins Download
VSON (DRB) 8 View options
WSON (DRV) 6 View options

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