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TPS732-Q1

ACTIVE

Automotive 250-mA, high-accuracy, low-dropout voltage regulator with reverse current protection

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Data sheet

TPS732-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Vin (max) (V) 5.5 Vin (min) (V) 1.7 Iout (max) (A) 0.25 Output options Adjustable Output, Fixed Output Vout (max) (V) 5.4 Vout (min) (V) 1.2 Fixed output options (V) 1.8, 5, 5.4 Noise (µVrms) 30 PSRR at 100 KHz (dB) 16 Iq (typ) (mA) 0.4 Features Enable, Foldback Overcurrent protection, Reverse Current Protection Thermal resistance θJA (°C/W) 48, 83.8, 179.0 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 40 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 5.5 Vin (min) (V) 1.7 Iout (max) (A) 0.25 Output options Adjustable Output, Fixed Output Vout (max) (V) 5.4 Vout (min) (V) 1.2 Fixed output options (V) 1.8, 5, 5.4 Noise (µVrms) 30 PSRR at 100 KHz (dB) 16 Iq (typ) (mA) 0.4 Features Enable, Foldback Overcurrent protection, Reverse Current Protection Thermal resistance θJA (°C/W) 48, 83.8, 179.0 TI functional safety category Functional Safety-Capable Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 40 Operating temperature range (°C) -40 to 125
SOT-223 (DCQ) 6 45.89 mm² (6.5 mm × 7.06 mm) VSON (DRB) 8 9 mm² (3 mm × 3 mm) SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 0: –40°C to 150°C, TA
    • Device HBM classification level 2
    • Device CDM classification level C4B
    • Device MM classification level M2
  • Stable with no output capacitor or any value or type of capacitor
  • Input voltage range: 1.7V to 5.5V
  • Ultra-low dropout voltage: 40mV typical at 250mA
  • Excellent load transient response—with or without optional output capacitor
  • NMOS topology provides low reverse leakage current
  • Low noise: 30µVRMS typical (10kHz to 100kHz)
  • Initial accuracy: 0.5%
  • 1% overall accuracy (line, load, and temperature)
  • Less than 1µA maximum IQ in shutdown mode
  • Thermal shutdown and specified minimum and maximum current limit protection
  • Available in multiple output voltage versions:
    • Fixed outputs of 1.2V, 1.5V, 1.6V, 1.8V, 2.5V, 3V, 3.3V, and 5V
    • Adjustable outputs from 1.2V to 5.5V
    • Custom outputs available
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 0: –40°C to 150°C, TA
    • Device HBM classification level 2
    • Device CDM classification level C4B
    • Device MM classification level M2
  • Stable with no output capacitor or any value or type of capacitor
  • Input voltage range: 1.7V to 5.5V
  • Ultra-low dropout voltage: 40mV typical at 250mA
  • Excellent load transient response—with or without optional output capacitor
  • NMOS topology provides low reverse leakage current
  • Low noise: 30µVRMS typical (10kHz to 100kHz)
  • Initial accuracy: 0.5%
  • 1% overall accuracy (line, load, and temperature)
  • Less than 1µA maximum IQ in shutdown mode
  • Thermal shutdown and specified minimum and maximum current limit protection
  • Available in multiple output voltage versions:
    • Fixed outputs of 1.2V, 1.5V, 1.6V, 1.8V, 2.5V, 3V, 3.3V, and 5V
    • Adjustable outputs from 1.2V to 5.5V
    • Custom outputs available

The TPS732-Q1 low-dropout (LDO) voltage regulator uses an NMOS topology consisting of an NMOS pass transient in a voltage-follower configuration. This topology is stable using output capacitors with low ESR, and even allows operation without a capacitor. The topology also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS732-Q1 uses an advanced BiCMOS process to yield high precision while delivering low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 1µA and designed for portable applications. The extremely low output noise (30µVRMS with 0.1µF CNR) is designed for powering VCOs. This device is protected by thermal shutdown and foldback current limit.

The TPS732-Q1 low-dropout (LDO) voltage regulator uses an NMOS topology consisting of an NMOS pass transient in a voltage-follower configuration. This topology is stable using output capacitors with low ESR, and even allows operation without a capacitor. The topology also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS732-Q1 uses an advanced BiCMOS process to yield high precision while delivering low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 1µA and designed for portable applications. The extremely low output noise (30µVRMS with 0.1µF CNR) is designed for powering VCOs. This device is protected by thermal shutdown and foldback current limit.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS732-Q1 Automotive, Cap-Free, NMOS, 250mA, Low-Dropout Regulator With Reverse-Current Protection datasheet (Rev. H) PDF | HTML Jul 1, 2025
Functional safety information TPS732-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML Dec 10, 2024
Application note LDO Noise Demystified (Rev. B) PDF | HTML Aug 18, 2020
Application note Using Thermal Calculation Tools for Analog Components (Rev. A) Aug 30, 2019
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML Aug 9, 2017
User guide DEM-SOT223LDO Demonstration Fixture Oct 15, 2003
More literature DMOS Delivers Dramatic Performance Gains to LDO Regulators (EDN mag) Feb 14, 2001

Design & development

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

Evaluation board

DEM-SOT23LDO — DEM-SOT23LDO Compatible With Most Positive-Output LDO Regulators in 5- or 6-Lead SOT23 (DBV) Package

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Evaluation board

TPS73201DRBEVM-518 — TPS73201DRBEVM-518 Evaluation Module

The TPS73201DRBEVM-518 evaluation module is a fully assembled and tested circuit for evaluating the TPS73201 low-dropout (LDO) voltage regulator in the DRB (3x3mm SON) package.
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Simulation model

TPS73201 PSpice Transient Model (Rev. A)

SBVM171A.ZIP (21 KB) - PSpice model
Supported products & hardware
Simulation model

TPS73250 PSpice Transient Model

SBVM363.ZIP (21 KB) - PSpice model
Supported products & hardware
Simulation model

TPS73250 TINA-TI Transient Reference Design

SBVM366.TSC (49 KB) - TINA-TI reference design
Supported products & hardware
Simulation model

TPS73250 TINA-TI Transient Spice Model

SBVM365.ZIP (7 KB) - TINA-TI Spice model
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SOT-223 (DCQ) 6 Ultra Librarian
VSON (DRB) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian
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