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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 (µVrms) 40 Iq (typ) (mA) 4.5 Thermal resistance θJA (°C/W) 23 Rating Catalog Load capacitance (min) (µF) 0.1 Regulated outputs (#) 1 Accuracy (%) 3 PSRR at 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 (µVrms) 40 Iq (typ) (mA) 4.5 Thermal resistance θJA (°C/W) 23 Rating Catalog Load capacitance (min) (µF) 0.1 Regulated outputs (#) 1 Accuracy (%) 3 PSRR at 100 KHz (dB) 40 Dropout voltage (Vdo) (typ) (mV) 2000 Operating temperature range (°C) -40 to 125, 0 to 125
SOT-223 (DCY) 4 45.5 mm² 6.5 x 7 TO-220 (KCS) 3 46.228 mm² 10.16 x 4.55 TO-252 (KVU) 3 66.726 mm² 6.6 x 10.11
  • 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

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.
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* Data sheet µA78Mxx Positive-Voltage Regulators datasheet (Rev. T) PDF | HTML 13 Jan 2015
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017

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