Product details


Output options Adjustable Output Iout (Max) (A) 3 Vin (Max) (V) 5.5 Vin (Min) (V) 2.25 Vout (Max) (V) 5 Vout (Min) (V) 0.5 Noise (uVrms) 25 Iq (Typ) (mA) 8 Thermal resistance θJA (°C/W) 67 Load capacitance (Min) (µF) 10 Rating Catalog Regulated outputs (#) 1 Features Enable Accuracy (%) 2 PSRR @ 100 KHz (dB) 28 Dropout voltage (Vdo) (Typ) (mV) 470 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

TO-263 (NDQ) 5 142 mm² 10.16 x 14.01 open-in-new Find other Linear regulators (LDO)


  • 2.25V to 5.5V Input Voltage Range
  • Adjustable Output Voltage Range of 0.5V to 4.5V
  • 3.0A Output Load Current
  • ±2.0% Accuracy over Line, Load, and Full-Temperature Range from -40°C to +125°C
  • Stable with tiny 10 µF ceramic capacitors
  • Enable pin
  • Typically less than 1 µA of Ground pin current when Enable pin is low
  • 25dB of PSRR at 100 kHz
  • Over-Temperature and Over-Current Protection
  • TO-263 THIN 5-Pin Surface Mount Package

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The LP38513-ADJ Fast-Transient Response Low-Dropout Voltage Regulator offers the highest-performance in meeting AC and DC accuracy requirements for powering Digital Cores. The LP38513-ADJ uses a proprietary control loop that enables extremely fast response to change in line conditions and load demands. Output Voltage DC accuracy at 2.5% over line, load and full temperature range from -40°C to +125°C. The LP38513-ADJ is designed for inputs from the 2.5V, 3.3V, and 5.0V rail, is stable with 10 μF ceramic capacitors, and has an adjustable output voltage. The LP38513-ADJ provides excellent transient performance to meet the demand of high performance digital core ASICs, DSPs, and FPGAs found in highly-intensive applications such as servers, routers/switches, and base stations.

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Technical documentation

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Type Title Date
* Datasheet 3A Fast-Transient Response Adjustable Low-Dropout Linear Voltage Regulator datasheet (Rev. C) Apr. 01, 2013
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
User guides AN-1670 LP38513TJ-ADJ Evaluation Board (Rev. B) Apr. 24, 2013
Application notes AN-1797 TO-263 THIN Package (Rev. A) Apr. 24, 2013

Design & development

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Hardware development

document-generic User guide

LP38513-ADJ 3A Fast-Transient Response Adjustable Low-Dropout Linear Voltage Regulator Evaluation Board

  • Conversions from 2.5V rail to adjustable output voltage
  • Stable with ceramic capacitors
  • Low ground pin current
  • Load regulation of 0.1% for 10 mA to 3A load current
  • 60 µA typical quiescent current in shutdown mode
  • Guaranteed output current of 3A
  • Available in TO220-5 and TO263-5 packages
  • Guaranteed VOUT (...)

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TO-263 (NDQ) 5 View options

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