Product details

Output options Fixed Output Iout (Max) (A) 1 Vin (Max) (V) 10 Vin (Min) (V) 2.7 Vout (Max) (V) 5 Vout (Min) (V) 1.8 Fixed output options (V) 1.8, 2.5, 3.3, 5 Noise (uVrms) 80 Iq (Typ) (mA) 0.055 Thermal resistance θJA (°C/W) 51 Rating Catalog Load capacitance (Min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent Protection Accuracy (%) 2.5 PSRR @ 100 KHz (dB) 50 Dropout voltage (Vdo) (Typ) (mV) 450 Operating temperature range (C) -40 to 125
Output options Fixed Output Iout (Max) (A) 1 Vin (Max) (V) 10 Vin (Min) (V) 2.7 Vout (Max) (V) 5 Vout (Min) (V) 1.8 Fixed output options (V) 1.8, 2.5, 3.3, 5 Noise (uVrms) 80 Iq (Typ) (mA) 0.055 Thermal resistance θJA (°C/W) 51 Rating Catalog Load capacitance (Min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent Protection Accuracy (%) 2.5 PSRR @ 100 KHz (dB) 50 Dropout voltage (Vdo) (Typ) (mV) 450 Operating temperature range (C) -40 to 125
TO-252 (NDP) 3 40 mm² 7.3 x 6.58 WSON (NGG) 6 9 mm² 3 x 3
  • Wide Input Voltage Range (2.7 V to 10 V)
  • 2.5% Output Accuracy (25°C)
  • Low Dropout Voltage: 450 mV at 1 A
    (typical, 5 VOUT)
  • Precision (Trimmed) Bandgap Reference
  • Ensured Specifications for –40°C to 125°C
  • 1-µA Off-State Quiescent Current
  • Thermal Overload Protection
  • Foldback Current Limiting
  • 3-Lead TO-252, 5-Lead SOT-223, and 6-Bump WSON Packages
  • Enable Pin (LP38692)
  • Ground Pin Current: 55 µA (typical) at Full Load
  • Precision Output Voltage: 2.5% (25°C) Accuracy
  • Wide Input Voltage Range (2.7 V to 10 V)
  • 2.5% Output Accuracy (25°C)
  • Low Dropout Voltage: 450 mV at 1 A
    (typical, 5 VOUT)
  • Precision (Trimmed) Bandgap Reference
  • Ensured Specifications for –40°C to 125°C
  • 1-µA Off-State Quiescent Current
  • Thermal Overload Protection
  • Foldback Current Limiting
  • 3-Lead TO-252, 5-Lead SOT-223, and 6-Bump WSON Packages
  • Enable Pin (LP38692)
  • Ground Pin Current: 55 µA (typical) at Full Load
  • Precision Output Voltage: 2.5% (25°C) Accuracy

The LP38690 and LP38692 low-dropout CMOS linear regulators provide tight output tolerance (2.5% typical), extremely low dropout voltage (450 mV at a 1-A load current, VOUT = 5 V), and excellent AC performance utilizing ultra low ESR ceramic output capacitors.

The low thermal resistance of the WSON, SOT-223, and TO-252 packages allow the full operating current to be used even in high ambient temperature environments.

The use of a PMOS power transistor means that no DC base drive current is required to bias it allowing ground pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.

For all available packages, see the orderable addendum at the end of the data sheet.

The LP38690 and LP38692 low-dropout CMOS linear regulators provide tight output tolerance (2.5% typical), extremely low dropout voltage (450 mV at a 1-A load current, VOUT = 5 V), and excellent AC performance utilizing ultra low ESR ceramic output capacitors.

The low thermal resistance of the WSON, SOT-223, and TO-252 packages allow the full operating current to be used even in high ambient temperature environments.

The use of a PMOS power transistor means that no DC base drive current is required to bias it allowing ground pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.

For all available packages, see the orderable addendum at the end of the data sheet.

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Technical documentation

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Type Title Date
* Data sheet LP38690, LP38692 1-A Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors datasheet (Rev. M) 03 Dec 2015
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 21 Mar 2018

Design & development

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

Evaluation board

LMG1205HBEVM — LMG1205 GaN Power Stage Evaluation Module

80-V 10A Power Stage EVM - The LMG1205 half-bridge EVM board is a small, easy to use, power stage with an external PWM signal. The EVM is suitable for evaluating the performance of the LMG1205 driving a GaN half-bridge in many different DC-DC converter topologies. It can be used to estimate the (...)

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Evaluation board

LMG5200EVM-02 — LMG5200 GaN power stage evaluation module

80-V 10A Power Stage EVM - The LMG5200 EVM board is a small easy to use power stage with an external PWM signal. The EVM is suitable for evaluating the performance of LMG5200 power stage in many different DC-DC converter topologies. It can be used to estimate the performance of LMG5200 to measure (...)
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Limit: 3
Simulation model

LP38690_2P5 PSpice Transient Model

SNVM578.ZIP (38 KB) - PSpice Model
Simulation model

LP38690_1P8 PSpice Transient Model

SNVM579.ZIP (38 KB) - PSpice Model
Simulation model

LP38690_3P3 PSpice Transient Model

SNVM580.ZIP (38 KB) - PSpice Model
Simulation model

LP38690_5P0 PSpice Transient Model

SNVM581.ZIP (38 KB) - PSpice Model
Simulation model

LP38690_5P0 Unencrypted PSpice Transient Model

SNVMA96.ZIP (1 KB) - PSpice Model
Simulation model

LP38690_3P3 Unencrypted PSpice Transient Model

SNVMA97.ZIP (1 KB) - PSpice Model
Simulation model

LP38690_1P8 Unencrypted PSpice Transient Model

SNVMA98.ZIP (1 KB) - PSpice Model
Simulation model

LP38690_2P5 Unencrypted PSpice Transient Model

SNVMA99.ZIP (1 KB) - PSpice Model
Reference designs

TIDA-00609 — Self-Booting Audio System

The purpose of this reference design is to provide hardware and software tools that can be used as reference for audio systems. The new revision of the PurePath™ Console Motherboard (Rev F) adds stand-alone self-booting capabilities to allow making compelling demos with any evaluation module (...)
Package Pins Download
TO-252 (NDP) 3 View options
WSON (NGG) 6 View options

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