Product details

Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.8 Vin (Max) (V) 15 Vin (Min) (V) 2.6 Vout (Max) (V) 13.8 Vout (Min) (V) 1.25 Fixed output options (V) 1.8, 2.5, 3.3, 5 Noise (uVrms) 38 Iq (Typ) (mA) 5 Thermal resistance θJA (°C/W) 24 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 1 Features Accuracy (%) 3 PSRR @ 100 KHz (dB) 47 Dropout voltage (Vdo) (Typ) (mV) 1200 Operating temperature range (C) -40 to 125, 0 to 125
Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.8 Vin (Max) (V) 15 Vin (Min) (V) 2.6 Vout (Max) (V) 13.8 Vout (Min) (V) 1.25 Fixed output options (V) 1.8, 2.5, 3.3, 5 Noise (uVrms) 38 Iq (Typ) (mA) 5 Thermal resistance θJA (°C/W) 24 Rating Catalog Load capacitance (Min) (µF) 10 Regulated outputs (#) 1 Features Accuracy (%) 3 PSRR @ 100 KHz (dB) 47 Dropout voltage (Vdo) (Typ) (mV) 1200 Operating temperature range (C) -40 to 125, 0 to 125
SOT-223 (DCY) 4 46 mm² 6.5 x 7 TO-220 (NDE) 3 47 mm² 10.16 x 4.58 TO-252 (NDP) 3 40 mm² 7.3 x 6.58 TO-263 (KTT) 3 155 mm² 10.16 x 15.24 WSON (NGN) 8 16 mm² 4 x 4
  • For a newer drop-in alternative, see the TLV1117
  • Available in 1.8 V, 2.5 V, 3.3 V, 5 V, and Adjustable Versions
  • Space-saving SOT-223 and WSON packages
  • Current limiting and thermal protection
  • Output current: 800 mA
  • Line regulation: 0.2% (maximum)
  • Load regulation: 0.4% (maximum)
  • Temperature range:
    • LM1117: 0°C to 125°C
    • LM1117I: −40°C to 125°C
  • For a newer drop-in alternative, see the TLV1117
  • Available in 1.8 V, 2.5 V, 3.3 V, 5 V, and Adjustable Versions
  • Space-saving SOT-223 and WSON packages
  • Current limiting and thermal protection
  • Output current: 800 mA
  • Line regulation: 0.2% (maximum)
  • Load regulation: 0.4% (maximum)
  • Temperature range:
    • LM1117: 0°C to 125°C
    • LM1117I: −40°C to 125°C

The LM1117 is a low dropout voltage regulator with a dropout of 1.2 V at 800 mA of load current.

The LM1117 is available in an adjustable version, which can set the output voltage from 1.25 to 13.8 V with only two external resistors. In addition, it is available in five fixed voltages, 1.8 V, 2.5 V, 3.3 V, and 5 V.

The LM1117 offers current limiting and thermal shutdown. Its circuit includes a Zener trimmed bandgap reference to assure output voltage accuracy to within ±1%.

A minimum of 10-µF tantalum capacitor is required at the output to improve the transient response and stability.

The LM1117 is a low dropout voltage regulator with a dropout of 1.2 V at 800 mA of load current.

The LM1117 is available in an adjustable version, which can set the output voltage from 1.25 to 13.8 V with only two external resistors. In addition, it is available in five fixed voltages, 1.8 V, 2.5 V, 3.3 V, and 5 V.

The LM1117 offers current limiting and thermal shutdown. Its circuit includes a Zener trimmed bandgap reference to assure output voltage accuracy to within ±1%.

A minimum of 10-µF tantalum capacitor is required at the output to improve the transient response and stability.

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Technical documentation

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Type Title Date
* Data sheet LM1117 800-mA, Low-Dropout Linear Regulator datasheet (Rev. O) 10 Jun 2020
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
User guide MLTLDO2EVM-037 Evaluation Module User's Guide 22 May 2020
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
Application note LDO PSRR Measurement Simplified (Rev. A) 09 Aug 2017
Technical article Overview of voltage regulator packaging 27 Aug 2015
Application note Linear power for automated industrial systems 09 Jan 2015
Application note AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B) 06 May 2013
Application note AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) 06 May 2013
Application note AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) 06 May 2013
Application note AN-182 Improving Power Supply Reliability with IC Power Regulators (Rev. B) 05 May 2013
Application note Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 05 May 2013
Application note AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A) 25 Apr 2013
Application note Packaging Limits Range of Linear Regulators 08 May 2010
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 04 Jun 2008
White paper Versatility of the LM5030 PWM Push-Pull Controller 01 Dec 2003
Application note Understanding the Terms and Definitions of LDO Voltage Regulators 21 Oct 1999

Design & development

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

Evaluation board

DLPDLCR4710EVM-G2 — Full HD DLP4710 Chipset Evaluation Module

DLP® LightCrafter Display 4710 EVM-G2 is an easy to use, plug and play evaluation platform for the Full HD DLP4710 chipset. The DLP4710 chipset is designed to be used in a wide array of display applications like mobile projectors, screenless TVs, interactive displays and digital signage. The (...)
Evaluation board

MLTLDO2EVM-037 — Universal LDO linear voltage regulator evaluation module for DCY, DDA and KVU packages

The MLTLDO2EVM-037 multipackage low-dropout (LDO) evaluation module (EVM) allows design engineers to evaluate the operation and performance of several common packages of linear regulators for possible use in their own circuit application. This EVM configuration contains a DDA, 3-pin and 5-pin KVU, (...)

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Simulation model

LM1117 2P85 Unencrypted PSpice Transient Model

SNOM479.ZIP (1 KB) - PSpice Model
Simulation model

LM1117 2P85 PSpice Transient Model

SNOM480.ZIP (59 KB) - PSpice Model
Simulation model

LM1117 2P5 PSpice Transient Model

SNOM481.ZIP (61 KB) - PSpice Model
Simulation model

LM1117 2P5 Unencrypted PSpice Transient Model

SNOM482.ZIP (1 KB) - PSpice Model
Simulation model

LM1117 1P8 Unencrypted PSpice Transient Model

SNOM483.ZIP (1 KB) - PSpice Model
Simulation model

LM1117 1P8 PSpice Transient Model

SNOM484.ZIP (56 KB) - PSpice Model
Simulation model

LM1117 5P0 Unencrypted PSpice Transient Model

SNOM485.ZIP (1 KB) - PSpice Model
Simulation model

LM1117 5P0 PSpice Transient Model

SNOM486.ZIP (57 KB) - PSpice Model
Simulation model

LM1117 3P3 PSpice Transient Model

SNOM487.ZIP (60 KB) - PSpice Model
Simulation model

LM1117 3P3 Unencrypted PSpice Transient Model

SNOM488.ZIP (1 KB) - PSpice Model
Simulation model

LM1117 ADJ PSpice Transient Model

SNOM556.ZIP (61 KB) - PSpice Model
Simulation model

LM1117 Adjustable Unencrypted PSpice Transient Model

SNOM557.ZIP (1 KB) - PSpice Model
Reference designs

PMP21582 — 260 W off-line multiple-output LLC-SRC reference design

This reference design uses UCC256302 LLC resonant controller to provide US-line AC input to a 30-V, 250-W output and a 13.8-V, 11-W output conversion. The low profile design has a maximum height of 1 inch. This design achieves 94% peak efficiency at 120-VAC input.
Reference designs

TIDA-01226 — Compact Full HD 1080p (up to 16 Amps) Projection Display Reference Design Using DLP Pico Technology

This reference design, featuring the DLP Pico™ 0.47-inch TRP Full-HD 1080p display chipset and implemented in the DLP LightCrafter Display 4710 G2 evaluation module (EVM), enables use of full HD resolution for projection display applications such as accessory projectors, screenless displays, (...)
Package Pins Download
DDPAK/TO-263 (KTT) 3 View options
SOT-223 (DCY) 4 View options
TO-220 (NDE) 3 View options
TO-252 (NDP) 3 View options
WSON (NGN) 8 View options

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