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Linear & low-dropout (LDO) regulators

UA78M

ACTIVE

500-mA, 30-V, linear voltage regulator

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Data sheet

UA78M

ACTIVE
Data sheet Order now

Product details

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 Rating Catalog Load capacitance (Min) (µF) 0.1 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
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 Rating Catalog Load capacitance (Min) (µF) 0.1 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 & low-dropout (LDO) regulators
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 & low-dropout (LDO) regulators
  • 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

All other trademarks are the property of their respective owners
  • 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

All other trademarks are the property of their respective owners

open-in-new Find other Linear & low-dropout (LDO) regulators

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.

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.

open-in-new Find other Linear & low-dropout (LDO) regulators
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Technical documentation

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Type Title Date
* Data sheet µA78Mxx Positive-Voltage Regulators datasheet (Rev. T) 13 Jan 2015
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Application note LDO Noise Demystified (Rev. B) 18 Aug 2020
User guide MLTLDO2EVM-037 Evaluation Module User's Guide 22 May 2020
Application note LDO PSRR Measurement Simplified (Rev. A) 09 Aug 2017

Design & development

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

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