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Product details

Parameters

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) 1, 1.1, 1.2, 1.5, 1.8, 2.5, 2.8, 2.9, 3.3 Noise (uVrms) 30 Iq (Typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80 Load capacitance (Min) (µF) 1 Rating Automotive Regulated outputs (#) 1 Features Enable, Power Good, Foldback Overcurrent Protection Accuracy (%) 2 PSRR @ 100 KHz (dB) 45 Dropout voltage (Vdo) (Typ) (mV) 190 Operating temperature range (C) -40 to 125, -40 to 150 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

VSON (DRB) 8 WSON (DRV) 6 4 mm² 2 x 2 WSON (DRV) 6 open-in-new Find other Linear regulators (LDO)

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 WSON (preview)
  • 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
  • Low thermal resistance:
    • DRV (6-pin WSON), RθJA = 80.3°C/W
    • DRB (8-pin WSON), RθJA = 62.0°C/W (preview)

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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 and a small 8-pin, 3-mm × 3-mm WSON 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.





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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TPS746-Q1 1-A LDO With Power-Good in Small Wettable Flank WSON Packages datasheet (Rev. A) Oct. 02, 2019
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
User guides TPS746EVM-009 Evaluation Module User's Guide Mar. 14, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
29
Description

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 (...)

Features
  • Input voltage range: 1.5 V to 6 V
  • Low dropout: 190 mV (max) at 1 A
  • Low quiescent current: 25 µA (typ)
  • High accuracy: 1% over temperature
  • Power good

CAD/CAE symbols

Package Pins Download
SON (DRB) 8 View options
WSON (DRV) 6 View options

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