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UA78M

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500-mA, 30-V, linear voltage regulator

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500-mA, 30-V, linear voltage regulator

UA78M

ACTIVE
Data sheet Order now

Product details

Parameters

Output options Fixed Output Iout (Max) (A) 0.5 Vin (Max) (V) 30 Vin (Min) (V) 5.3 Vout (Max) (V) 12 Vout (Min) (V) 3.3 Fixed output options (V) 3.3, 5, 6, 8, 9, 10, 12 Noise (uVrms) 40 Iq (Typ) (mA) 4.5 Thermal resistance θJA (°C/W) 23 Load capacitance (Min) (µF) 0.1 Rating Catalog Regulated outputs (#) 1 Features — Accuracy (%) 3 PSRR @ 100 KHz (dB) 40 Dropout voltage (Vdo) (Typ) (mV) 2000 Operating temperature range (C) -40 to 125, 0 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-223 (DCY) 4 46 mm² 6.5 x 7 TO-220 (KCS) 3 88 mm² 10.15 x 15.4 TO-252 (KVU) 3 67 mm² 6.6 x 10.11 open-in-new Find other Linear regulators (LDO)

Features

  • 3-Terminal Regulators
  • Output Current up to 500 mA
  • No External Components
  • Internal Thermal-Overload Protection
  • High Power-Dissipation Capability
  • Internal Short-Circuit Current Limiting
  • Output Transistor Safe-Area Compensation
  • APPLICATIONS
    • On-Card Regulation
    • Portable Devices
    • Computing & Servers
    • Telecommunications

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Description

This series of fixed-voltage integrated-circuit voltage regulators is designed for a wide range of applications. The applications include on-card regulation for elimination of noise and distribution problems associated with single-point regulation. Each of these regulators can deliver up to 500 mA of output current. The internal current-limiting and thermal-shutdown features of these regulators essentially make them immune to overload. In addition to use as fixed-voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents and also as the power-pass element in precision regulators.

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Technical documentation

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Type Title Date
* Datasheet µA78Mxx Positive-Voltage Regulators datasheet (Rev. T) Jan. 13, 2015
Application note LDO Noise Demystified (Rev. B) Aug. 18, 2020
User guide MLTLDO2EVM-037 Evaluation Module User's Guide May 22, 2020
Technical article LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical article LDO Basics: Preventing reverse current Jul. 25, 2018
Technical article LDO basics: introduction to quiescent current Jun. 20, 2018
Application note LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Technical article LDO basics: noise – part 1 Jun. 14, 2017

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
SOT-223 (DCY) 4 View options
TO-220 (KCS) 3 View options
TO-252 (KVU) 3 View options

Ordering & quality

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  • Ongoing reliability monitoring

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