LC75804W-E Equivalent & Substitute Parts

Part Overview

The LC75804W-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 228 and 300 segment configurations in a 100-SQFP (14x14mm) surface mount package. The product is currently obsolete, making identification of functionally compatible alternatives essential for ongoing system support, maintenance, and component sourcing.

Substiute Parts

LC75804W-E

onsemiIn Stock: 9457LC75804W-E Datasheet

Current PartRFQ

LC75806PT-H

onsemiIn Stock: 1069LC75806PT-H Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LC75804W-E is determined by the following critical parameters:

• Display Type: Must be LCD driver
• Interface Type: Must be Serial interface
• Voltage Supply Range: Must support 4.5V ~ 6V operation
• Operating Temperature Range: Must support -40°C ~ 85°C
• Mounting Type: Must be Surface Mount
• Package Footprint: Must accommodate 100-pin QFP family packages (SQFP or TQFP variants with 14x14mm dimensions)
• Segment Configuration: Must support equivalent or higher segment counts (228/300 segments minimum)

The LC75806PT-H qualifies as a functional substitute based on these criteria. Both devices share identical voltage supply ranges, operating temperature specifications, serial interface architecture, and compatible surface mount packaging within the same footprint class.

Parameter Comparison

Engineering Selection Recommendations

The LC75806PT-H serves as a direct functional substitute for the LC75804W-E based on electrical and mechanical compatibility within the specified parameters. Both devices are classified as obsolete products, requiring component sourcing from existing inventory channels.

Selection between these parts should account for the following factors derived from provided specifications:

Supply Current Differential: The LC75806PT-H operates at 1.4 mA compared to the LC75804W-E at 270 µA. This 5.2x increase in supply current represents the primary electrical distinction and must be evaluated against system power budget constraints.

Segment Configuration: The LC75806PT-H supports 231 and 304 segment configurations, exceeding the 228 and 300 segment capacity of the LC75804W-E. This higher capacity does not preclude substitution in applications utilizing the lower segment counts.

Package Variants: Both devices employ 100-pin QFP packages with identical 14x14mm footprints. The LC75804W-E uses SQFP packaging while the LC75806PT-H uses TQFP packaging. These variants are mechanically and electrically interchangeable within the same PCB footprint.

Compliance and Certifications: Both parts maintain identical REACH, ECCN, and MSL ratings, ensuring regulatory and environmental handling equivalence.

Frequently Asked Questions (FAQ)

Q: Can the LC75806PT-H directly replace the LC75804W-E on existing PCBs?

A: Yes. Both devices share identical 100-pin QFP footprints with 14x14mm dimensions. SQFP and TQFP package variants are mechanically compatible within the same land pattern. Electrical compatibility is confirmed across voltage supply, operating temperature, and serial interface specifications.

Q: What is the primary difference between these two LCD drivers?

A: The LC75806PT-H supports higher segment counts (231/304 segments) and operates at elevated supply current (1.4 mA versus 270 µA). Both devices maintain identical voltage supply ranges (4.5V ~ 6V) and operating temperature specifications (-40°C ~ 85°C).

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both the LC75804W-E and LC75806PT-H carry identical REACH, ECCN (EAR99), and MSL (3, 168 Hours) classifications.

Q: Why is the LC75806PT-H drawing more current than the LC75804W-E?

A: The increased supply current in the LC75806PT-H reflects its higher segment capacity and internal architecture. This parameter is provided as specified and must be factored into system power supply design.

Q: Are both parts currently available for purchase?

A: Both the LC75804W-E and LC75806PT-H are classified as obsolete products. Component availability is limited to existing inventory channels. The LC75806PT-H currently has 1036 pieces in stock.

Q: What should be verified before implementing a substitution?

A: Confirm that the application's segment display requirements do not exceed 228/300 segments (the lower capacity of the LC75804W-E). Verify that the system power supply can accommodate the LC75806PT-H's 1.4 mA supply current. Validate serial interface protocol compatibility with the host controller.