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LM78M

ACTIVE
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500-mA, 35-V, linear voltage regulator for 5 V

Data sheet
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500-mA, 35-V, linear voltage regulator for 5 V

LM78M

ACTIVE
Data sheet Order now

Product details

Parameters

Output options Fixed Output Iout (Max) (A) 0.5 Vin (Max) (V) 35 Vin (Min) (V) 7.2 Vout (Max) (V) 15 Vout (Min) (V) 5 Fixed output options (V) 5 Noise (uVrms) 40 Iq (Typ) (mA) 4 Thermal resistance θJA (°C/W) 38 Load capacitance (Min) (µF) 0.1 Rating Catalog Regulated outputs (#) 1 Features — Accuracy (%) 3 PSRR @ 100 KHz (dB) 40 Dropout voltage (Vdo) (Typ) (mV) 1800 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

TO-220 (NDE) 3 47 mm² 10.16 x 4.58 TO-252 (NDP) 3 40 mm² 7.3 x 6.58 open-in-new Find other Linear regulators (LDO)

Features

  • For a lower cost alternative, see the UA78M
  • Output current in excess of 0.5 A
  • No external components
  • Internal thermal overload protection
  • Internal short circuit current-limiting
  • Output transistor safe-area compensation
  • Available in 3-pin TO-220, TO-252, and TO packages
  • Output voltages of 5 V and 15 V

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Description

The LM341 and LM78M05 three-pin positive voltage regulators employ built-in current limiting, thermal shutdown, and safe-operating area protection, which makes them virtually immune to damage from output overloads.

With adequate heat sinking, they can deliver in excess of 0.5-A output current. Typical applications would include local (on-card) regulators which can eliminate the noise and degraded performance associated with single-point regulation.

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Exact equivalent in functionality and parametrics to the compared device:
UA78M ACTIVE 500-mA, 30-V, linear voltage regulator Pin-to-pin equivalent for cost-sensitive applications

Technical documentation

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Type Title Date
* Datasheet LM341 and LM78M05 Series 3-Terminal 500-mA Positive Voltage Regulators datasheet (Rev. G) Jun. 17, 2020
User guide MLTLDO2EVM-037 Evaluation Module User's Guide May 22, 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) Jun. 27, 2019
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
Application note AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) May 06, 2013
Application note AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) May 06, 2013
Application note Packaging Limits Range of Linear Regulators May 08, 2010
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) Jun. 04, 2008
Application note Understanding the Terms and Definitions of LDO Voltage Regulators Oct. 21, 1999

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
29
Description

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 (...)

Features
  • Supports most LDO linear regulators in
    • DDA package
    • 3-pin and 5-pin KVU package
    • DCY package
View details

CAD/CAE symbols

Package Pins Download
TO-220 (NDE) 3 View options
TO-252 (NDP) 3 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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