LE50CD Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LE50CD is a linear voltage regulator IC manufactured by STMicroelectronics, classified as a Power Management (PMIC) component. This device provides a positive fixed 5V output at 100mA in an 8-SOIC surface mount package. The LE50CD is currently listed as obsolete, which necessitates identification of equivalent substitute parts for ongoing design support and procurement requirements. Active alternatives with identical electrical and mechanical specifications are available to ensure continuity in component sourcing and system reliability.

Key Parameters

Parameter	Value
Manufacturer	STMicroelectronics
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Fixed
Voltage - Output (Min/Fixed)	5V
Voltage - Input (Max)	18V
Current - Output	100mA
Voltage Dropout (Max)	0.5V @ 100mA
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the LE50CD is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

Output voltage: 5V fixed
Maximum output current: 100mA
Maximum input voltage: 18V
Dropout voltage: 0.5V @ 100mA
Quiescent current: 1mA
Supply current (max): 3mA
PSRR: 76dB ~ 60dB (120Hz ~ 10kHz)

Mechanical & Package Specifications:

Package type: 8-SOIC
Package dimensions: 0.154" width, 3.90mm width
Mounting type: Surface Mount

Compliance & Environmental:

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)
Operating temperature range: -40°C ~ 125°C

The LE50CD-TR substitute part maintains identical electrical performance and mechanical compatibility while offering active product status and improved availability.

Parameter Comparison

Parameter	LE50CD	LE50CD-TR
Manufacturer	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active
Output Configuration	Positive	Positive
Output Type	Fixed	Fixed
Voltage - Output (Min/Fixed)	5V	5V
Voltage - Input (Max)	18V	18V
Current - Output	100mA	100mA
Voltage Dropout (Max)	0.5V @ 100mA	0.5V @ 100mA
Current - Quiescent (Iq)	1mA	1mA
Current - Supply (Max)	3mA	3mA
PSRR	76dB ~ 60dB (120Hz ~ 10kHz)	76dB ~ 60dB (120Hz ~ 10kHz)
Control Features	Enable	Enable
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The LE50CD-TR is a direct functional equivalent to the LE50CD. Both parts are manufactured by STMicroelectronics and share identical electrical specifications, output characteristics, and mechanical packaging. The primary distinction is product status: the LE50CD is obsolete while the LE50CD-TR maintains active status.

For new designs and ongoing production requirements, the LE50CD-TR is the appropriate selection. This part provides:

Identical electrical performance across all specified parameters
Full compatibility with existing PCB layouts and footprints
Equivalent compliance certifications (ROHS3, REACH Unaffected)
Improved long-term availability and supply chain stability
Same operating temperature range and environmental specifications

Both parts are suitable for applications requiring a 5V fixed output linear regulator with 100mA output current capability in surface mount 8-SOIC packaging.

Frequently Asked Questions (FAQ)

Q: Can the LE50CD-TR be used as a direct replacement for the LE50CD?

A: Yes. The LE50CD-TR is electrically and mechanically identical to the LE50CD. All electrical parameters, output specifications, package dimensions, and compliance certifications are equivalent. The LE50CD-TR is the active production equivalent.

Q: What is the difference between LE50CD and LE50CD-TR?

A: The primary difference is packaging format and product status. The LE50CD is obsolete, while the LE50CD-TR is active. The LE50CD-TR is supplied in Cut Tape (CT) and Digi-Reel® packaging, whereas the LE50CD packaging format is not specified. Electrical and mechanical specifications are identical.

Q: Are there any pin configuration differences between these parts?

A: No. Both parts use the 8-SOIC package with identical pin assignments and functionality. PCB layouts and footprints are fully compatible.

Q: What is the maximum input voltage for these regulators?

A: The maximum input voltage is 18V for both the LE50CD and LE50CD-TR.

Q: What output current can these regulators supply?

A: Both parts provide a maximum output current of 100mA at the fixed 5V output.

Q: Are these parts RoHS compliant?

A: Yes. Both the LE50CD and LE50CD-TR are ROHS3 Compliant and REACH Unaffected.

Q: What is the operating temperature range?

A: Both parts operate across the temperature range of -40°C to 125°C.

Q: What protection features are included?

A: Both parts include Over Current and Over Temperature protection features, with an Enable control function.

Q: What is the dropout voltage specification?

A: The maximum dropout voltage is 0.5V at 100mA output current for both parts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message