Product details


Output options Fixed Output Iout (Max) (A) 3 Vin (Max) (V) 5.5 Vin (Min) (V) 2.25 Vout (Max) (V) 1.8 Vout (Min) (V) 1.8 Fixed output options (V) 1.8 Noise (uVrms) 45 Iq (Typ) (mA) 10 Thermal resistance θJA (°C/W) 32 Load capacitance (Min) (µF) 10 Rating Catalog Regulated outputs (#) 1 Features Enable, Power Good Accuracy (%) 2 PSRR @ 100 KHz (dB) 29 Dropout voltage (Vdo) (Typ) (mV) 425 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

TO-220 (NDH) 5 86 mm² 10.16 x 8.47 TO-263 (KTT) 5 155 mm² 10.16 x 15.24 open-in-new Find other Linear regulators (LDO)


  • Input Supply Voltage 2.25 V to 5.5 V
  • Conversions from 2.5-V Rail to 1.8-V Rail
  • Stable with Ceramic Capacitors
  • Low Ground Pin Current
  • Load Regulation of 0.1% for 10 mA to 3-A Load Current
  • 60-μA Typical Quiescent Current in Shutdown Mode
  • Specified Output Current of 3 A
  • Specified VOUT Accuracy of ±2.6% With
    TJ from 0°C to +125°C
  • ERROR Flag Indicates VOUT Status
  • Overtemperature and Overcurrent Protection
  • −40°C to +125°C Operating TJ Range
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The LP38513 fast-response ultra-low dropout linear regulator operates from a 2.25-V to 5.5-V input supply. This device responds very quickly to step changes in line or load conditions, making it suitable for low-voltage microprocessor applications. Developed on a CMOS process, with a PMOS pass transistor, the LP38513 has low quiescent-current operation independent of the output load current. Ground Pin Current: Typically 12 mA at 3-A load current.Disable Mode: Typically 60 µA quiescent current when the enable (EN) pin is pulled low.ERROR Flag: The ERROR flag goes low if VOUT falls more than typically 15% below the nominal value.Precision Output Voltage: A specified VOUT accuracy of ±2.6% with TJ from 0°C to 125°C.

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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 11
Type Title Date
* Datasheet LP38513 3-A Fast Response Ultra-Low Dropout Linear Regulator datasheet (Rev. E) Nov. 19, 2015
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Selection guides Low Dropout Regulators Quick Reference Guide (Rev. P) Mar. 21, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
User guides AN-1518 LP38513S-1.8 Evaluation Board (Rev. A) Apr. 24, 2013
User guides AN-1670 LP38513TJ-ADJ Evaluation Board (Rev. B) Apr. 24, 2013
User guides AN-1801 LP38511TJ-ADJ Evaluation Board (Rev. B) Apr. 24, 2013
User guides AN-1802 LP38512TJ-ADJ Evaluation Board (Rev. B) Apr. 24, 2013

Design & development

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

Hardware development

document-generic User guide

This board is designed to enable the evaluation of the LP38513S-1.8 Voltage Regulator. Each board is assembled and tested in the factory. This evaluation board has the TO-263 5–lead package mounted.

  • Conversions from 2.5V rail to 1.8V
  • 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 accuracy of ±2.6% with TJ (...)

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

50-Ohm 2-GHz Oscilloscope Front-end Reference Design
TIDA-00826 This reference design is part of an analog front-end for 50Ω-input oscilloscope application. System designers can readily use this evaluation platform to process input signals from DC to 2 GHz in both frequency-domain and time-domain applications.
document-generic Schematic document-generic User guide
Clocking Solution Reference Design for GSPS ADCs
TIDA-00359 Low cost, high performance clocking solution for GSPS data converters. This reference design discusses the use of a TRF3765, a low noise frequency synthesizer, generating the sampling clock for a 4 GSPS analog-to-digital converter (ADC12J4000). Experiments demonstrate data sheet comparable SNR and (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
DDPAK/TO-263 (KTT) 5 View options
TO-220 (NDH) 5 View options

Ordering & quality

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