Product details

Output options Adjustable Output Iout (Max) (A) 1 Vin (Max) (V) 6 Vin (Min) (V) 1.5 Vout (Max) (V) 5.5 Vout (Min) (V) 0.55 Noise (uVrms) 53 Iq (Typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80 Rating Catalog Load capacitance (Min) (µF) 1 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) 190 Operating temperature range (C) -40 to 125
Output options Adjustable Output Iout (Max) (A) 1 Vin (Max) (V) 6 Vin (Min) (V) 1.5 Vout (Max) (V) 5.5 Vout (Min) (V) 0.55 Noise (uVrms) 53 Iq (Typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80 Rating Catalog Load capacitance (Min) (µF) 1 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) 190 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:
    • 225 mV (max) at 1 A (3.3 VOUT)
  • High Output Accuracy:
    • 0.7%, Typical
    • 1%, Maximum Over Temperature (85°C)
  • Open-Drain Power-Good Output
  • Power-Good Rising Delay:
    • TPS746: 165 µs
    • TPS746B: 5 ms
  • IQ: 25 µA (Typical)
  • Built-In Soft-Start With Monotonic VOUT Rise
  • Package:
    • 2-mm × 2-mm 6-Pin WSON (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:
    • 225 mV (max) at 1 A (3.3 VOUT)
  • High Output Accuracy:
    • 0.7%, Typical
    • 1%, Maximum Over Temperature (85°C)
  • Open-Drain Power-Good Output
  • Power-Good Rising Delay:
    • TPS746: 165 µs
    • TPS746B: 5 ms
  • IQ: 25 µA (Typical)
  • Built-In Soft-Start With Monotonic VOUT Rise
  • Package:
    • 2-mm × 2-mm 6-Pin WSON (DRV)
  • Active Output Discharge

The TPS746 is an adjustable 1-A 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 TPS746 features an ultra-low dropout of 225 mV at 1 A that can help improve the power efficiency of the system.

The TPS746 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. Additionally, the TPS746 has a low IQ with enable functionality to minimize standby power. This device features an internal soft-start to lower the inrush current, which provides a controlled voltage to the load and minimizes the input voltage drop during start up.

The TPS746 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 sources in the system.

The TPS746 is stable with small ceramic output capacitors, allowing for a small overall solution size. A precision band-gap and error amplifier provides a high accuracy of 0.7% max at 25ºC and 1% max over temperature (85ºC). This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS746 has an internal foldback current limit that helps reduce the thermal dissipation during short-circuit events.




The TPS746 is an adjustable 1-A 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 TPS746 features an ultra-low dropout of 225 mV at 1 A that can help improve the power efficiency of the system.

The TPS746 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. Additionally, the TPS746 has a low IQ with enable functionality to minimize standby power. This device features an internal soft-start to lower the inrush current, which provides a controlled voltage to the load and minimizes the input voltage drop during start up.

The TPS746 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 sources in the system.

The TPS746 is stable with small ceramic output capacitors, allowing for a small overall solution size. A precision band-gap and error amplifier provides a high accuracy of 0.7% max at 25ºC and 1% max over temperature (85ºC). This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS746 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 TPS746 1-A High Accuracy Adjustable LDO With Power-Good in a Small Size Package datasheet (Rev. A) 11 Dec 2018
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
User guide TPS746EVM-009 Evaluation Module User's Guide 14 Mar 2018

Design & development

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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 (...)

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Simulation model

TPS74601P PSpice Transient Model

SBVM927.ZIP (43 KB) - PSpice Model
Simulation model

TPS74601P Unencrypted PSpice Transient Model

SBVM928.ZIP (3 KB) - PSpice Model
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TPS74601PB PSpice Transient Model

SBVM929.ZIP (44 KB) - PSpice Model
Simulation model

TPS74601PB Unencrypted PSpice Transient Model

SBVM930.ZIP (3 KB) - PSpice Model
Simulation model

TPS74650P Unencrypted PSpice Transient Model

SBVM933.ZIP (3 KB) - PSpice Model
Simulation model

TPS746065P PSpice Transient Model

SBVM934.ZIP (47 KB) - PSpice Model
Simulation model

TPS746065P Unencrypted PSpice Transient Model

SBVM935.ZIP (3 KB) - PSpice Model
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TPS74633P PSpice Transient Model

SBVM936.ZIP (44 KB) - PSpice Model
Simulation model

TPS74650P PSpice Transient Model

SBVM937.ZIP (45 KB) - PSpice Model
Simulation model

TPS74633P Unencrypted PSpice Transient Model

SBVM938.ZIP (3 KB) - PSpice Model
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WSON (DRV) 6 View options

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