Product
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LP38500-ADJ
  • LP38500-ADJ
  • LP38500-ADJ
  • LP38500-ADJ
  • LP38500-ADJ
  • LP38500-ADJ
  • LP38500-ADJ
  • LP38500-ADJ

LP38500-ADJ

ACTIVE

1.5-A, adjustable ultra-low-dropout voltage regulator

Texas Instruments LP38500-ADJ Product Info

1 April 2026 5

Parameters

Rating

Catalog

Vin (max) (V)

5.5

Vin (min) (V)

2.7

Iout (max) (A)

1.5

Output options

Adjustable Output

Vout (max) (V)

5.1

Vout (min) (V)

0.6

Noise (µVrms)

100

PSRR at 100 KHz (dB)

25

Iq (typ) (mA)

2

Thermal resistance θJA (°C/W)

33, 41.8, 52.5

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Accuracy (%)

2

Dropout voltage (Vdo) (typ) (mV)

220

Operating temperature range (°C)

-40 to 125

Package

TO-263 (KTT)-5-154.8384 mm² 10.16 x 15.24

Features

  • Input Voltage: 2.7 V to 5.5 V
  • Adjustable Output Voltage: 0.6 V to 5 V
  • FlexCap: Stable with Ceramic, Tantalum, or
    Aluminum Capacitors
  • Stable with 10-µF Input and Output Capacitors
  • Low Ground-Pin Current
  • 25-nA Quiescent Current in Shutdown Mode
  • Ensured Output Current of 1.5 A
  • Ensured VADJ Accuracy of ±1.5% at 25°C (A
    Grade)
  • Ensured Accuracy of ±3.5% at 25°C (STD)
  • Overtemperature and Overcurrent Protection
  • ENABLE Pin (LP38502)
  • Input Voltage: 2.7 V to 5.5 V
  • Adjustable Output Voltage: 0.6 V to 5 V
  • FlexCap: Stable with Ceramic, Tantalum, or
    Aluminum Capacitors
  • Stable with 10-µF Input and Output Capacitors
  • Low Ground-Pin Current
  • 25-nA Quiescent Current in Shutdown Mode
  • Ensured Output Current of 1.5 A
  • Ensured VADJ Accuracy of ±1.5% at 25°C (A
    Grade)
  • Ensured Accuracy of ±3.5% at 25°C (STD)
  • Overtemperature and Overcurrent Protection
  • ENABLE Pin (LP38502)

Description

TI’s FlexCap low-dropout (LDO) linear regulators feature unique compensation that allow use of any type of output capacitor with no limits on minimum or maximum equivalent series resistance (ESR). The LP38500 and LP38502 series of LDOs operates from a 2.7-V to 5.5-V input supply. These ultra-low-dropout linear regulators respond very quickly to step changes in load, making them suitable for low-voltage microprocessor applications. Developed on a CMOS process (utilizing a PMOS pass transistor) the LP38500-ADJ and LP38502-ADJ have low quiescent currents that changes little with load current.

  • GND Pin Current: Typically 2 mA at 1.5-A load current.
  • Disable Mode: Typically 25-nA quiescent current when the EN pin is pulled low. (LP38502-ADJ)
  • Simplified Compensation: Stable with any type of output capacitor, regardless of ESR.
  • Precision Output: grade versions available with 1.5% VADJ tolerance (25°C) and 3% over line, load, and temperature.

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