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LM78M

ACTIVE

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

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Data sheet

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UA78M ACTIVE 500mA 35V linear voltage regulator Pin-to-pin equivalent for cost-sensitive applications

LM78M

ACTIVE
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Product details

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 Rating Catalog Noise (µVrms) 40 PSRR at 100 KHz (dB) 40 Iq (typ) (mA) 4 Thermal resistance θJA (°C/W) 23, 38 Load capacitance (min) (µF) 0.1 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 1800 Operating temperature range (°C) -40 to 125
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 Rating Catalog Noise (µVrms) 40 PSRR at 100 KHz (dB) 40 Iq (typ) (mA) 4 Thermal resistance θJA (°C/W) 23, 38 Load capacitance (min) (µF) 0.1 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 1800 Operating temperature range (°C) -40 to 125
TO-220 (NDE) 3 46.5328 mm² 10.16 x 4.58 TO-252 (NDP) 3 65.2078 mm² 6.58 x 9.91
  • 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
  • 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

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.

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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Technical documentation

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* Data sheet LM341 and LM78M05 Series 3-Terminal 500-mA Positive Voltage Regulators datasheet (Rev. G) PDF | HTML 17 Jun 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
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 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
Application note Understanding the Terms and Definitions of LDO Voltage Regulators 21 Oct 1999

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, (...)

User guide: PDF
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Package Pins CAD symbols, footprints & 3D models
TO-220 (NDE) 3 Ultra Librarian
TO-252 (NDP) 3 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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