L78L09ACUTR

$0.26

Description：IC REG LINEAR 9V 100MA SOT89-3
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:bea170e0d3b0 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 9V 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)：30V
Voltage - Output (Min/Fixed)：9V
Voltage - Output (Max)：-
Voltage Dropout (Max)：-
Current - Output：100mA
Current - Quiescent (Iq)：5.5 mA
Current - Supply (Max)：6 mA
PSRR：44dB (120Hz)
Control Features：-
Protection Features：Over Current, Over Temperature, Short Circuit
Operating Temperature：0°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：TO-243AA
Supplier Device Package：SOT-89-3
Grade：-
Qualification：-

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L78L09ACUTR

Overview

The L78L09ACUTR 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 output voltage of 9 V with a maximum output current of 100 mA. The device supports a DC input voltage up to 30 V and operates within a junction temperature range of 0 °C to 125 °C. Electrical characteristics include a typical quiescent current of 6 mA at 25 °C, line regulation of 225 mV (VI = 11.5 to 23 V), load regulation of 80 mV (IO = 1 to 100 mA), and a typical supply voltage rejection ratio of 44 dB at 120 Hz.

Feature Summary

Integrates internal current limiting and thermal shutdown protection mechanisms for robust operation under fault conditions.
Functions as a direct replacement for Zener diode and resistor combinations, offering improved stability with lower quiescent current and reduced noise.
Requires no external components for basic fixed-voltage regulation applications.

Applications

Local or on-card voltage regulation to eliminate noise associated with single-point distribution systems.
Power pass element configurations designed to create high-current voltage regulators.
Current regulator circuit implementations.

Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the specific reel packaging configuration required for your assembly process. Confirm the 'A' designation matches the required ±4% output voltage tolerance against your design specifications. Ensure the SOT-89 footprint aligns with your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when a fixed 9 V output is required with a maximum load current of 100 mA. Verify that the input voltage remains below the 30 V absolute maximum rating. Consider the thermal resistance characteristics of the SOT-89 package to ensure adequate heat dissipation for the expected power dissipation levels in your application environment.

Part Context

This part belongs to the L78Lxx family of three-terminal positive regulators manufactured by STMicroelectronics. The series includes various fixed output voltages ranging from 3.3 V to 24 V. The 'AC' suffix indicates a specific temperature range and tolerance grade compared to other variants like 'AB' or 'C'.