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Power Circuits / Linear Regulator ICs / L78M18ABDT
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L78M18ABDT by: STMicroelectronics

18V FIXED POSITIVE REGULATOR, PSSO2, DPAK-3

Part Details for L78M18ABDT by STMicroelectronics

Results Overview of L78M18ABDT by STMicroelectronics

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Applications Energy and Power Systems Transportation and Logistics Renewable Energy Automotive

L78M18ABDT Information

L78M18ABDT by STMicroelectronics is a Linear Regulator IC.
Linear Regulator ICs are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Part Details for L78M18ABDT

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L78M18ABDT Part Data Attributes

Parametric Data
L78M18ABDT STMicroelectronics
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Compare Parts:
L78M18ABDT STMicroelectronics 18V FIXED POSITIVE REGULATOR, PSSO2, DPAK-3
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Rohs Code Yes
Part Life Cycle Code Obsolete
Ihs Manufacturer STMICROELECTRONICS
Part Package Code TO-252
Package Description DPAK-3
Pin Count 3
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Samacsys Manufacturer STMicroelectronics
Adjustability FIXED
Dropout Voltage1-Nom 2 V
Input Voltage Absolute-Max 35 V
Input Voltage-Max 33 V
Input Voltage-Min 20.5 V
JESD-30 Code R-PSSO-G2
JESD-609 Code e0
Length 6.5 mm
Line Regulation-Max 0.1%
Load Regulation-Max 0.36%
Number of Functions 1
Number of Outputs 1
Number of Terminals 2
Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min -40 °C
Output Current1-Max 0.5 A
Output Voltage1-Max 18.7 V
Output Voltage1-Min 17.3 V
Output Voltage1-Nom 18 V
Package Body Material PLASTIC/EPOXY
Package Code TO-252
Package Equivalence Code SMSIP3H,.38,90TB
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Qualification Status Not Qualified
Regulator Type FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR
Seated Height-Max 2.63 mm
Surface Mount YES
Technology BIPOLAR
Terminal Finish TIN LEAD
Terminal Form GULL WING
Terminal Pitch 2.25 mm
Terminal Position SINGLE
Voltage Tolerance-Max 3.89%
Width 6.1 mm

Alternate Parts for L78M18ABDT

This table gives cross-reference parts and alternative options found for L78M18ABDT. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of L78M18ABDT, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
L78M18ABDT-TR STMicroelectronics Check for Price 18V FIXED POSITIVE REGULATOR, PSSO2, ROHS COMPLIANT, DPAK-3 L78M18ABDT vs L78M18ABDT-TR
Part Number Manufacturer Composite Price Description Compare
78T18L-TQ3-T Unisonic Technologies Co Ltd Check for Price Fixed Positive Standard Regulator, 18VBIPolar, PSSO3, TO-263, 3 PIN L78M18ABDT vs 78T18L-TQ3-T
MC78M18CDTRKG onsemi $0.3102 Linear Voltage Regulator, 500 mA, 5 to 24 V, High PSRR, Positive Vout: 18 V; TJ = 0° to +125°C, DPAK (SINGLE GAUGE) TO-252, 2500-REEL L78M18ABDT vs MC78M18CDTRKG
78T18L-TQ2-R Unisonic Technologies Co Ltd Check for Price Fixed Positive Standard Regulator, 18VBIPolar, PSSO2, TO-263, 3 PIN L78M18ABDT vs 78T18L-TQ2-R
78T18-TQ3-T Unisonic Technologies Co Ltd Check for Price Fixed Positive Standard Regulator, 18VBIPolar, PSSO3, TO-263, 3 PIN L78M18ABDT vs 78T18-TQ3-T
MC78M18CT onsemi Check for Price 18V FIXED POSITIVE REGULATOR, PSFM3, PLASTIC, TO-220, 3 PIN L78M18ABDT vs MC78M18CT
NJM78M18FA Nisshinbo Micro Devices Check for Price Fixed Positive Standard Regulator, 18V, BIPolar, PSFM3, TO-220F, 3 PIN L78M18ABDT vs NJM78M18FA
78T18-TQ2-R Unisonic Technologies Co Ltd Check for Price Fixed Positive Standard Regulator, 18VBIPolar, PSSO2, TO-263, 3 PIN L78M18ABDT vs 78T18-TQ2-R
L78M18ABV STMicroelectronics Check for Price 18V FIXED POSITIVE REGULATOR, PSFM3, ROHS COMPLIANT, TO-220, 3 PIN L78M18ABDT vs L78M18ABV
MC78M18CDT Fairchild Semiconductor Corporation Check for Price Fixed Positive Standard Regulator, 18VBIPolar, PSSO2, DPAK-3 L78M18ABDT vs MC78M18CDT
78T18L-TQ3-R Unisonic Technologies Co Ltd Check for Price Fixed Positive Standard Regulator, 18VBIPolar, PSSO3, TO-263, 3 PIN L78M18ABDT vs 78T18L-TQ3-R

L78M18ABDT Related Parts

L78M18ABDT Frequently Asked Questions (FAQ)

  • The maximum input voltage that can be applied to the L78M18ABDT is 35V, although it's recommended to keep it below 30V for reliable operation.

  • To ensure stability, make sure to use a minimum output capacitance of 2.2uF, and a minimum input capacitance of 0.33uF. Also, keep the output voltage ripple below 1% to prevent oscillation.

  • The maximum output current that the L78M18ABDT can deliver is 1.5A, although it's recommended to keep it below 1A for reliable operation and to prevent overheating.

  • To protect the L78M18ABDT from overheating, make sure to provide adequate heat sinking, and keep the junction temperature below 150°C. You can also use thermal shutdown circuits to prevent overheating.

  • No, the L78M18ABDT is a linear voltage regulator and is not suitable for switching regulator applications. It's designed for low-dropout, low-noise, and high-PSRR applications.