LC75822W-E Equivalent & Substitute Parts

Part Overview

The LC75822W-E is an LCD driver IC manufactured by onsemi, designed for segment LCD display applications. This device operates as a serial interface LCD driver supporting 53 or 104 segment configurations in a 64-LQFP surface mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and component procurement.

Substiute Parts

LC75822W-E

onsemiIn Stock: 965LC75822W-E Datasheet

Current PartRFQ

LC75832W-E

onsemiIn Stock: 1024LC75832W-E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for LCD driver ICs is determined by the following critical parameters:

• Package Compatibility: Both parts must use identical or pin-compatible packages (64-LQFP/64-SQFP)
• Interface Type: Serial interface requirement must be maintained
• Segment Configuration: The substitute must support the required segment count (53 or 104 segments)
• Supply Voltage Range: Operating voltage must encompass or exceed the original specification
• Temperature Range: Operating temperature must meet or exceed the original range
• Display Type: LCD driver functionality must be preserved

The LC75832W-E qualifies as a substitute based on these criteria: identical 64-LQFP package, serial interface, compatible segment configurations (54/108 segments), overlapping supply voltage range, and extended temperature range.

Parameter Comparison

Engineering Selection Recommendations

The LC75832W-E is a direct substitute for the obsolete LC75822W-E based on the following engineering criteria:

Package and Pinout: Both devices use the 64-LQFP package with identical physical dimensions (10x10 mm), enabling direct board-level replacement without layout modifications.

Functional Compatibility: The LC75832W-E maintains serial interface operation and supports segment configurations that encompass the original part's capabilities (54/108 segments versus 53/104 segments).

Supply Voltage: The substitute operates across a 2.7V to 6V range, which overlaps with the original 3V to 6.5V specification. Applications operating at 3V or above will function identically.

Temperature Performance: The extended operating range (-40°C to 105°C) of the LC75832W-E provides additional thermal margin compared to the original specification (-40°C to 85°C).

Compliance and Availability: The LC75832W-E is actively manufactured and ROHS3 compliant, ensuring long-term supply chain stability and regulatory compliance. The improved MSL rating (3 versus 4) reduces moisture-related handling risks during assembly.

Frequently Asked Questions (FAQ)

Q: Can the LC75832W-E be used as a direct replacement for the LC75822W-E?

A: Yes. Both devices share identical 64-LQFP packaging, serial interface architecture, and overlapping electrical specifications. The substitute supports higher segment counts and operates across an extended temperature range, making it functionally compatible for applications within the original voltage and temperature envelope.

Q: What are the key differences between these two parts?

A: The LC75832W-E supports 54/108 segment configurations compared to the LC75822W-E's 53/104 segments. The substitute operates at lower minimum voltage (2.7V versus 3V), extends the maximum operating temperature to 105°C, and features improved moisture sensitivity (MSL 3 versus MSL 4). The LC75832W-E is actively manufactured while the LC75822W-E is obsolete.

Q: Are there any voltage compatibility concerns?

A: Applications operating at 3V or higher will experience no voltage-related compatibility issues. Designs operating below 3V but above 2.7V may use the LC75832W-E, though this falls outside the original part's specification. Designs requiring operation below 2.7V cannot use either part.

Q: Does the package remain identical?

A: Yes. Both parts use the 64-LQFP (64-SQFP) surface mount package with 10x10 mm dimensions. No PCB layout changes are required for substitution.

Q: What is the significance of the MSL rating difference?

A: The LC75832W-E has an MSL rating of 3 (168 hours), compared to the LC75822W-E's MSL 4 (72 hours). This indicates the substitute can tolerate longer exposure to moisture before soldering, reducing the risk of moisture-induced defects during assembly and storage.

Q: Is the LC75832W-E compliant with current regulations?

A: Yes. The LC75832W-E is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The obsolete LC75822W-E does not carry active compliance certifications.