L78M15ABDT-TR

$0.50

Description：IC REG LINEAR 15V 500MA DPAK
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:ec4d9a5038e7 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 15V 500MA DPAK
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：35V
Voltage - Output (Min/Fixed)：15V
Voltage - Output (Max)：-
Voltage Dropout (Max)：-
Current - Output：500mA
Current - Quiescent (Iq)：6 mA
Current - Supply (Max)：-
PSRR：54dB (120Hz)
Control Features：-
Protection Features：Over Current, Over Temperature, Short Circuit
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package：DPAK
Grade：-
Qualification：-

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L78M15ABDT-TR

Overview

The L78M15ABDT-TR is a three-terminal positive linear voltage regulator from the L78MxxA series, manufactured by STMicroelectronics. It provides a fixed output voltage of 15 V with an output current capability up to 0.5 A. The device features ±2% output voltage tolerance and operates within an extended temperature range of -40 °C to +125 °C. Maximum input voltage is rated at 35 V for this output level. Electrical characteristics include a typical quiescent current of 6 mA and a dropout voltage of approximately 2 V. Supply voltage rejection is typically 54 dB at 120 Hz. The component is housed in a DPAK (TO-252) surface-mount package.

Feature Summary

Integrated thermal overload protection shuts down the circuit during excessive power conditions.
Internal short-circuit protection limits maximum output current to prevent damage.
Output transistor safe-area compensation reduces output current as voltage across the pass transistor increases.

Applications

Local on-card regulation to eliminate distribution problems associated with single-point regulation
Replacement for Zener diode and resistor combinations requiring lower noise and quiescent current
Fixed voltage regulation in industrial and consumer electronic circuits

Procurement Notes

Verify that the specific part number matches the required output voltage and package type. Confirm the 'AB' suffix indicates the extended temperature grade (-40°C to +125°C). Ensure compatibility with the DPAK footprint dimensions provided in the datasheet mechanical data section before finalizing procurement specifications.

Selection Notes

Select this component when a fixed 15 V output is required with moderate current demands up to 500 mA. Consider the thermal resistance values for heat dissipation planning, as the DPAK package has a junction-to-ambient thermal resistance of 100 °C/W without a heatsink. Verify input voltage ranges to ensure sufficient headroom above the 2 V dropout voltage under all operating load conditions.

Part Context

This device belongs to the L78MxxA precision regulator family, which offers higher accuracy compared to standard L78Mxx variants. The series includes multiple fixed voltage options ranging from 5 V to 24 V. All members share similar internal protection mechanisms and are available in both TO-220 through-hole and DPAK surface-mount packages for flexible design integration.