L78L33CD-TR

$0.23

Description：IC REG LINEAR 3.3V 100MA 8-SOIC
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:130318cd951f Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 3.3V 100MA 8-SOIC
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)：3.3V
Voltage - Output (Max)：-
Voltage Dropout (Max)：-
Current - Output：100mA
Current - Quiescent (Iq)：5.5 mA
Current - Supply (Max)：6 mA
PSRR：49dB (120Hz)
Control Features：-
Protection Features：Over Current, Over Temperature, Short Circuit
Operating Temperature：0°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC
Grade：-
Qualification：-

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L78L33CD-TR

Overview

The L78L33CD-TR is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, housed in an SOIC-8 surface-mount package. It provides a fixed output voltage of 3.3 V with a maximum output current capability of 100 mA. The device operates within a DC input voltage range up to 30 V and supports an operating 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 150 mV (VI = 5.4 to 20 V), and load regulation of 60 mV (IO = 1 to 100 mA).

Feature Summary

Integrates internal thermal overload protection and short-circuit limiting for robust operation.
Designed as a fixed voltage regulator requiring no external components for basic functionality.
Capable of replacing Zener diode/resistor combinations while offering lower noise and quiescent current.

Applications

Local or on-card voltage regulation to eliminate distribution problems associated with single-point regulation.
Replacement for Zener diode and resistor networks in low-noise applications.
Configuration with power pass elements to construct high-current voltage regulators.

Procurement Notes

Verify that the ordering suffix 'CD' corresponds to the SOIC-8 package and ±8% output voltage tolerance selection. Confirm the 'TR' suffix indicates tape-and-reel packaging. Ensure the specific revision of the datasheet matches the production lot requirements for environmental compliance and pin configuration details.

Selection Notes

Select this component when a fixed 3.3 V supply is required with moderate current demands up to 100 mA. The SOIC-8 package is suitable for surface-mount assembly where space efficiency is prioritized over the higher thermal dissipation capabilities of through-hole packages like TO-92. Verify input voltage headroom against the dropout voltage specifications under expected load conditions.

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 L78L33 variant specifically targets 3.3 V logic and analog circuit supplies. The 'C' designation indicates an 8% accuracy grade, distinguishing it from the higher precision 'A' grade variants.