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Product details

Parameters

Output options Adjustable 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 Noise (uVrms) 30 Iq (Typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80 Approx. price (US$) 0.28 | 1ku Load capacitance (Min) (µF) 1 Rating Catalog Regulated outputs (#) 1 Features Enable, Power Good, Output Discharge, Soft Start, Foldback Overcurrent Protection Accuracy (%) 1 PSRR @ 100 KHz (dB) 45 Dropout voltage (Vdo) (Typ) (mV) 95 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

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

Features

  • Input Voltage Range: 1.5 V to 6.0 V
  • Adjustable Output Voltage:
    • 0.55 V to 5.5 V
  • Very Low Dropout:
    • 130 mV (max) at 500 mA (3.3 VOUT)
  • High Output Accuracy: 0.7% (Typical) and 1% (Maximum Over Temperature)
  • Open-Drain Power-Good Output
  • IQ: 25 µA (Typical)
  • Built-In Soft-Start With Monotonic VOUT Rise
  • Package:
    • 2-mm × 2-mm WSON-6 (DRV)
  • Active Output Discharge

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Description

The TPS745 is an adjustable 500-mA low-dropout (LDO) regulator with power-good functionality. This device is available in a small, 6-pin, 2-mm × 2-mm WSON package and consumes very low quiescent current and provides fast line and load transient performance. The TPS745 features an ultra-low dropout of 130 mV at 500 mA that can help improve the power efficiency of the system.

The TPS745 is optimized for a wide variety of applications 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 low output voltage enables this LDO to power the modern microcontrollers with lower core voltages.

The TPS745 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 the sequencing multiple power sources in the system.

The TPS745 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 0.7% (max) at 25°C and 1% (max) over temperature (85ºC). This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS745 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
* Datasheet TPS745 500-mA, High Accuracy, Adjustable LDO With Power-Good in a Small Size Package datasheet (Rev. A) Dec. 14, 2018
Application notes An empirical analysis of the impact of board layout on LDO thermal performance Feb. 22, 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
$29.00
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

Design tools & simulation

SIMULATION MODELS Download
SBVM931.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SBVM932.ZIP (44 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
WSON (DRV) 6 View options

Ordering & quality

Support & training

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