LE45CD-TR

$0.82

Description：IC REG LINEAR 4.5V 100MA 8-SOIC
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:4939a9d52e53 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 4.5V 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)：18V
Voltage - Output (Min/Fixed)：4.5V
Voltage - Output (Max)：-
Voltage Dropout (Max)：0.5V @ 100mA
Current - Output：100mA
Current - Quiescent (Iq)：1 mA
Current - Supply (Max)：3 mA
PSRR：77dB ~ 60dB (120Hz ~ 10kHz)
Control Features：Enable
Protection Features：Over Current, Over Temperature
Operating Temperature：-40°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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LE45CD-TR

Overview

The LE45CD-TR is a positive fixed linear voltage regulator from the STMicroelectronics LEXX family, housed in an 8-SOIC package. It provides a fixed output of 4.5V with a maximum output current of 100mA. The device features a maximum dropout voltage of 0.5V at full load and supports input voltages up to 18V. Key electrical parameters include a quiescent current of 1mA and power supply rejection ratios ranging from 77dB at 120Hz to 60dB at 12kHz. It operates within a temperature range of -40°C to 125°C and includes overcurrent and thermal shutdown protection.

Feature Summary

Integrates a TTL-compatible inhibit function on pin 5 for local standby control in 8-pin configurations
Provides very low-dropout performance suitable for battery-powered systems
Includes internal overcurrent and thermal overload protection mechanisms

Applications

Low-noise, low-power electronic circuits
Battery-powered system regulation
Local voltage regulation requiring standby mode capability

Procurement Notes

Verify component status as the LE45CD-TR is listed as obsolete by the manufacturer. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing PCB footprints and design requirements before procurement. Check for alternative replacement components if long-term supply stability is required.

Selection Notes

Select this component for applications requiring a fixed 4.5V output with moderate current demands up to 100mA. The 8-SOIC package offers surface-mount convenience with integrated shutdown logic. Consider the specific dropout characteristics and thermal management needs relative to the input voltage and ambient operating conditions.

Part Context

This part belongs to the LEXX series of very low-dropout voltage regulators. The series is designed for efficiency in low-power applications and features pin-to-pin compatibility with older L78L series regulators. The LE45 variant specifically targets the 4.5V output segment of this portfolio.