L78L15ABUTR

$0.28

Description：IC REG LINEAR 15V 100MA SOT89-3
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:46e850c05b82 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 100MA SOT89-3
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：100mA
Current - Quiescent (Iq)：6 mA
Current - Supply (Max)：6.5 mA
PSRR：39dB (120Hz)
Control Features：-
Protection Features：Over Current, Over Temperature, Short Circuit
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：TO-243AA
Supplier Device Package：SOT-89-3
Grade：-
Qualification：-

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L78L15ABUTR

Overview

The L78L15ABUTR is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, housed in an SOT-89 surface-mount package. It provides a fixed nominal output voltage of 15 V with a maximum output current capability of 100 mA. The device features internal thermal overload protection and short-circuit protection, ensuring robust operation without requiring external components. It operates within a junction temperature range of -40 °C to +125 °C and supports a maximum DC input voltage of 35 V for this specific output voltage variant.

Feature Summary

Integrates internal current limiting and thermal shutdown mechanisms for inherent circuit protection
Provides fixed 15 V regulation with ±4% tolerance (indicated by 'A' suffix) without external components
Designed as a replacement for Zener diode/resistor combinations to reduce noise and quiescent current

Applications

Local or on-card voltage regulation
Elimination of noise associated with single-point regulation systems
Replacement for discrete Zener diode and resistor voltage reference circuits

Procurement Notes

Verify that the ordering suffix matches the required temperature grade and tolerance specifications. Confirm the package type corresponds to the intended PCB layout requirements. Ensure the application design accounts for the maximum input voltage limits relative to the 15 V output to prevent exceeding power dissipation ratings under worst-case conditions.

Selection Notes

Select this component when a fixed 15 V supply is required with moderate current demands up to 100 mA. The SOT-89 package is suitable for space-constrained surface-mount designs. Consider the thermal resistance characteristics if operating near maximum load currents to ensure junction temperatures remain within the specified operational range.

Part Context

This part belongs to the L78Lxx family of low-current positive voltage regulators. The 'AB' designation indicates an extended industrial temperature range (-40 °C to +125 °C) compared to standard commercial variants. The 'UTR' suffix typically denotes tape-and-reel packaging for automated assembly processes.