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Linear & low-dropout (LDO) regulators
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Linear & low-dropout (LDO) regulators

TPS737-Q1

ACTIVE

Automotive 1A ultra-low-dropout voltage regulator with reverse current protection and enable

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Data sheet

TPS737-Q1

ACTIVE
Data sheet Order now

Product details

Output options Fixed Output Iout (max) (A) 1 Vin (max) (V) 5.5 Vin (min) (V) 2.2 Vout (max) (V) 3.3 Vout (min) (V) 1.9 Fixed output options (V) 1.9, 3.3 Rating Automotive Noise (µVrms) 51 PSRR at 100 KHz (dB) 32 Iq (typ) (mA) 0.4 Thermal resistance θJA (°C/W) 52 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Reverse Current Protection Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 130 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 1 Vin (max) (V) 5.5 Vin (min) (V) 2.2 Vout (max) (V) 3.3 Vout (min) (V) 1.9 Fixed output options (V) 1.9, 3.3 Rating Automotive Noise (µVrms) 51 PSRR at 100 KHz (dB) 32 Iq (typ) (mA) 0.4 Thermal resistance θJA (°C/W) 52 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Reverse Current Protection Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 130 Operating temperature range (°C) -40 to 125
VSON (DRB) 8 9 mm² 3 x 3
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4A
  • Stable with 1µF or larger ceramic output capacitor
  • Input voltage range: 2.2V to 5.5V
  • Ultra-low dropout voltage: 130mV (typical) at 1A
  • Excellent load transient response, even with only 1µF output capacitor
  • NMOS topology delivers low reverse leakage current
  • 1% initial accuracy
  • 3% overall accuracy over line, load, and temperature
  • Less than 20nA (typical) quiescent current in shutdown mode
  • Thermal shutdown and current limit for fault protection
  • Available in multiple output voltage versions
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4A
  • Stable with 1µF or larger ceramic output capacitor
  • Input voltage range: 2.2V to 5.5V
  • Ultra-low dropout voltage: 130mV (typical) at 1A
  • Excellent load transient response, even with only 1µF output capacitor
  • NMOS topology delivers low reverse leakage current
  • 1% initial accuracy
  • 3% overall accuracy over line, load, and temperature
  • Less than 20nA (typical) quiescent current in shutdown mode
  • Thermal shutdown and current limit for fault protection
  • Available in multiple output voltage versions

The TPS737-Q1 linear low-dropout (LDO) voltage regulator uses an n-type field effect transistor (NMOS) pass transistor in a voltage-follower configuration. This topology is relatively insensitive to output capacitor value and ESR, allowing a wide variety of load configurations. Load transient response is excellent, even with a small 1µF ceramic output capacitor. The NMOS topology also allows very low dropout.

The TPS737-Q1 uses an advanced bipolar complementary metal-oxide semiconductor (BiCMOS) process. This process yields high precision and delivers very low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 20nA and is designed for portable applications. This device is protected by thermal shutdown and foldback current limit.

The TPS737-Q1 linear low-dropout (LDO) voltage regulator uses an n-type field effect transistor (NMOS) pass transistor in a voltage-follower configuration. This topology is relatively insensitive to output capacitor value and ESR, allowing a wide variety of load configurations. Load transient response is excellent, even with a small 1µF ceramic output capacitor. The NMOS topology also allows very low dropout.

The TPS737-Q1 uses an advanced bipolar complementary metal-oxide semiconductor (BiCMOS) process. This process yields high precision and delivers very low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 20nA and is designed for portable applications. This device is protected by thermal shutdown and foldback current limit.
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Technical documentation

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Type Title Date
* Data sheet TPS737-Q1 Automotive, 1A Low-Dropout Regulator With Reverse Current Protection datasheet (Rev. C) PDF | HTML 21 Mar 2025
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017

Design & development

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SBVM305.ZIP (22 KB) - PSpice Model
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Simulation model

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