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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
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4A
  • Stable with 1-µF or larger ceramic output capacitor
  • Input voltage range: 2.2 V to 5.5 V
  • Ultra-low dropout voltage: 130 mV (typical) at 1 A
  • Excellent load transient response, even with only 1-µF output capacitor
  • NMOS topology delivers low reverse leakage current
  • 1% initial accuracy
  • 3% overall accuracy over line, load, and temperature
  • Less than 20-nA (typical) quiescent current in shutdown mode
  • Thermal shutdown and current limit for fault protection
  • Available in multiple output voltage versions
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4A
  • Stable with 1-µF or larger ceramic output capacitor
  • Input voltage range: 2.2 V to 5.5 V
  • Ultra-low dropout voltage: 130 mV (typical) at 1 A
  • Excellent load transient response, even with only 1-µF output capacitor
  • NMOS topology delivers low reverse leakage current
  • 1% initial accuracy
  • 3% overall accuracy over line, load, and temperature
  • Less than 20-nA (typical) quiescent current in shutdown mode
  • Thermal shutdown and current limit for fault protection
  • Available in multiple output voltage versions

The TPS737xx-Q1 family of linear low-dropout (LDO) voltage regulators uses an NMOS pass element 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 1-µF ceramic output capacitor. The NMOS topology also allows very low dropout.

The TPS737xx-Q1 family uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 20 nA and ideal for portable applications. These devices are protected by thermal shutdown and foldback current limit.

The TPS737xx-Q1 family of linear low-dropout (LDO) voltage regulators uses an NMOS pass element 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 1-µF ceramic output capacitor. The NMOS topology also allows very low dropout.

The TPS737xx-Q1 family uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 20 nA and ideal for portable applications. These devices are 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 1-A Low-Dropout Regulator With Reverse Current Protection datasheet (Rev. B) 27 Sep 2019
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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TPS73719 PSpice Transient Model

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

TPS73733 PSpice Transient Model

SBVM291.ZIP (22 KB) - PSpice Model
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