LC75804WS-E Equivalent & Substitute Parts

Part Overview

The LC75804WS-E is an LCD driver integrated circuit manufactured by onsemi, designed for segment LCD display applications. This device operates as a serial interface LCD driver supporting 228 or 300 segment configurations in a 100-SQFP surface mount package. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, maintenance, and component procurement.

Substiute Parts

LC75804WS-E

onsemiIn Stock: 2101LC75804WS-E Datasheet

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LC75806PT-H

onsemiIn Stock: 1069LC75806PT-H Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LC75804WS-E is determined by the following critical parameters:

• Manufacturer: onsemi (same manufacturer ensures design continuity and support)
• Display Type: LCD (functional category requirement)
• Interface: Serial (communication protocol compatibility)
• Voltage Supply Range: 4.5V ~ 6V (power supply compatibility)
• Operating Temperature Range: -40°C ~ 85°C (thermal envelope compatibility)
• Mounting Type: Surface Mount (PCB assembly compatibility)
• Package Form Factor: 100-pin QFP variants (mechanical and electrical footprint considerations)

The LC75806PT-H qualifies as a substitute based on matching voltage supply range, operating temperature range, serial interface, surface mount configuration, and 100-pin QFP package family. Segment configuration differences (231/304 vs. 228/300) and supply current variations (1.4 mA vs. 270 µA) represent functional differences that must be evaluated within specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the LC75804WS-E and LC75806PT-H are classified as obsolete products. Selection between these devices must account for the following factors:

Electrical Compatibility: Both devices operate within the 4.5V ~ 6V supply range and -40°C ~ 85°C temperature envelope. The LC75806PT-H exhibits higher supply current (1.4 mA vs. 270 µA), which impacts power budget calculations in battery-powered or low-power applications.

Segment Configuration: The LC75804WS-E supports 228/300 segment configurations, while the LC75806PT-H supports 231/304 segment configurations. Display panel compatibility must be verified against the specific LCD module in use.

Package Considerations: Both devices use 100-pin QFP packages with identical 14x14 mm footprints. The LC75804WS-E uses SQFP (Shrink Quad Flat Package) while the LC75806PT-H uses TQFP (Thin Quad Flat Package). PCB layout and assembly process compatibility should be confirmed.

Regulatory Compliance: Both devices maintain REACH Unaffected status and identical MSL ratings, ensuring equivalent environmental and regulatory standing.

Frequently Asked Questions (FAQ)

Q: Can the LC75806PT-H directly replace the LC75804WS-E on an existing PCB?

A: Physical footprint compatibility exists due to identical 100-pin QFP package dimensions (14x14 mm). However, segment configuration differences (231/304 vs. 228/300) require verification that the LCD panel supports the substitute device's output configuration. SQFP and TQFP package variants may have minor lead pitch or coplanarity differences that should be confirmed with assembly specifications.

Q: What is the impact of the higher supply current in the LC75806PT-H?

A: The LC75806PT-H draws 1.4 mA compared to the LC75804WS-E's 270 µA. This 5.2x increase in supply current affects power consumption calculations, thermal management, and power supply design. Applications with strict power budgets must account for this difference.

Q: Are both devices suitable for new designs?

A: Both the LC75804WS-E and LC75806PT-H are classified as obsolete. Neither device is recommended for new product development. Alternative current-generation LCD driver solutions from onsemi or other manufacturers should be evaluated for new applications.

Q: What does REACH Unaffected status mean?

A: REACH Unaffected status indicates that the device is not subject to REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulatory requirements, ensuring compliance with EU chemical safety regulations.

Q: How do segment configuration differences affect compatibility?

A: Segment configuration specifies the maximum number of LCD segments the driver can control. The LC75804WS-E supports up to 300 segments, while the LC75806PT-H supports up to 304 segments. The LCD panel must be designed to operate with the specific segment count of the selected driver. Mismatched configurations result in non-functional display operation.