Product details

Output options Adjustable Output, Fixed Output Iout (Max) (A) 1 Vin (Max) (V) 5.5 Vin (Min) (V) 2.2 Vout (Max) (V) 5.5 Vout (Min) (V) 1.2 Fixed output options (V) 2.1, 2.5 Noise (uVrms) 32 Iq (Typ) (mA) 0.4 Thermal resistance θJA (°C/W) 67 Rating Catalog Load capacitance (Min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback overcurrent protection, Reverse current protection Accuracy (%) 1 PSRR @ 100 KHz (dB) 32 Dropout voltage (Vdo) (Typ) (mV) 130 Operating temperature range (C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (Max) (A) 1 Vin (Max) (V) 5.5 Vin (Min) (V) 2.2 Vout (Max) (V) 5.5 Vout (Min) (V) 1.2 Fixed output options (V) 2.1, 2.5 Noise (uVrms) 32 Iq (Typ) (mA) 0.4 Thermal resistance θJA (°C/W) 67 Rating Catalog Load capacitance (Min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback overcurrent protection, Reverse current protection Accuracy (%) 1 PSRR @ 100 KHz (dB) 32 Dropout voltage (Vdo) (Typ) (mV) 130 Operating temperature range (C) -40 to 125
WSON (DRV) 6 4 mm² 2 x 2
  • Stable with 1-µF or Larger Ceramic Output
    Capacitor
  • Input Voltage Range: 2.2 V to 5.5 V
  • Ultralow Dropout Voltage:
    • 200-mV Maximum at 1 A
  • Excellent Load Transient Response–Even With
    Only 1-µF Output Capacitor
  • NMOS Topology Delivers Low Reverse Leakage
    Current
  • Excellent Accuracy:
    • 0.23% Nominal Accuracy
    • 1% Overall Accuracy Over Line, Over Load,
      and Over Temperature
  • Less Than 20-nA typical IQ in Shutdown Mode
  • Thermal Shutdown and Current Limit for Fault
    Protection
  • Stable with 1-µF or Larger Ceramic Output
    Capacitor
  • Input Voltage Range: 2.2 V to 5.5 V
  • Ultralow Dropout Voltage:
    • 200-mV Maximum at 1 A
  • Excellent Load Transient Response–Even With
    Only 1-µF Output Capacitor
  • NMOS Topology Delivers Low Reverse Leakage
    Current
  • Excellent Accuracy:
    • 0.23% Nominal Accuracy
    • 1% Overall Accuracy Over Line, Over Load,
      and Over Temperature
  • Less Than 20-nA typical IQ in Shutdown Mode
  • Thermal Shutdown and Current Limit for Fault
    Protection

The TPS7A37 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 TPS7A37 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 TPS7A37 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 TPS7A37 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 1% High-Accuracy, 1-A, Low-Dropout Regulator with Reverse Current Protection datasheet (Rev. B) 23 Oct 2013
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Technical article LDO Basics: Preventing reverse current 25 Jul 2018
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018
User guide TPS7A37XXDRV-529 Evaluation Module 22 Jan 2013

Design & development

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

Evaluation board

TPS7A3721EVM-529 — TPS7A3721 Single-Output Low-Dropout (LDO) Evaluation Module

The Texas Instruments TPS7A3721EVM-529 is a fully assembled and tested evaluation module (EVM) for evaluating the TPS7A3721 low-dropout regulator (LDO) at a fixed output voltage of 2.1V with 1% output accuracy (worst case). The EVM circuit is configured to be a reference design for engineering (...)
User guide: PDF
Not available on TI.com
Simulation model

TPS7A3721 PSpice Transient Model

SBVM311.ZIP (21 KB) - PSpice Model
Simulation model

TPS7A3725 PSpice Transient Model

SBVM314.ZIP (21 KB) - PSpice Model
Simulation model

TPS7A3701 PSpice Transient Model

SBVM318.ZIP (21 KB) - PSpice Model
Package Pins Download
WSON (DRV) 6 View options

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