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TPS745

ACTIVE

500-mA, low-IQ, high-accuracy, adjustable ultra-low-dropout voltage regulator with power good

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Data sheet

TPS745

ACTIVE
Data sheet Order now

Product details

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 (µVrms) 53 Iq (typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 PSRR at 100 KHz (dB) 45 Dropout voltage (Vdo) (typ) (mV) 95 Operating temperature range (°C) -40 to 125
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 (µVrms) 53 Iq (typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 PSRR at 100 KHz (dB) 45 Dropout voltage (Vdo) (typ) (mV) 95 Operating temperature range (°C) -40 to 125
WSON (DRV) 6 4 mm² 2 x 2
  • 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
  • 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

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.




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
* Data sheet TPS745 500-mA, High Accuracy, Adjustable LDO With Power-Good in a Small Size Package datasheet (Rev. A) PDF | HTML 14 Dec 2018
Application note An empirical analysis of the impact of board layout on LDO thermal performance 22 Feb 2019
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
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Simulation model

TLV74501P PSpice Transient Model

SBVM932.ZIP (44 KB) - PSpice Model
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Simulation model

TPS74501P Unencrypted PSpice Transient Model

SBVM931.ZIP (3 KB) - PSpice Model
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Reference designs

TIDA-010231 — Analog front end for arc detection in photovoltaic applications reference design

This reference design implements a four-channel analog front end for DC arc detection in photovoltaic systems, supports DC voltages up tp 1000 V and currents up to 10 A. Arcing is detected by analyzing the AC noise present on the DC current between the solar panels and inverter. The signal is (...)
Design guide: PDF
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WSON (DRV) 6 View options
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