LC75832WS-E Equivalent & Substitute Parts

Part Overview

The LC75832WS-E is an LCD driver IC manufactured by onsemi, designed for 54 or 108 segment LCD display applications. This device operates as a serial interface LCD driver in a 64-pin LQFP surface mount package. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and component procurement.

Substiute Parts

LC75832WS-E

onsemiIn Stock: 826LC75832WS-E Datasheet

Current PartRFQ

ML9472TBZ03A

Rohm SemiconductorIn Stock: 862ML9472TBZ03A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LC75832WS-E is determined by the following critical parameters:

• Display Driver Function: Both parts must support LCD segment driving with serial interface capability
• Segment Configuration: The substitute must support equivalent or higher segment counts (54/108 segments minimum)
• Supply Voltage Range: Operating voltage must overlap or encompass the original specification (2.7V ~ 6V)
• Operating Temperature Range: Must maintain -40°C ~ 105°C performance envelope
• Surface Mount Packaging: Both parts utilize surface mount technology for PCB integration
• Compliance Standards: RoHS3 compliance and REACH unaffected status required for regulatory alignment

The ML9472TBZ03A from Rohm Semiconductor meets these substitution criteria as an active LCD driver IC with serial interface, supporting 120 segment configuration, compatible supply voltage range, and equivalent temperature performance.

Parameter Comparison

Engineering Selection Recommendations

The ML9472TBZ03A is the manufacturer-recommended substitute for the obsolete LC75832WS-E. Selection of this alternative is supported by:

• Active Product Status: The ML9472TBZ03A maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements
• Functional Equivalence: Serial interface LCD driver architecture with segment configuration supporting the original application requirements
• Temperature Performance: Identical operating temperature range (-40°C ~ 105°C) maintains thermal performance specifications
• Supply Voltage Compatibility: The 3V ~ 5.5V range of the substitute overlaps the original 2.7V ~ 6V specification within the 3V ~ 5.5V window

Design integration requires evaluation of package footprint differences (64-LQFP versus 80-TQFP) and PCB layout accommodation for the larger package geometry.

Frequently Asked Questions (FAQ)

Q: Can the ML9472TBZ03A directly replace the LC75832WS-E without design modifications?

A: The ML9472TBZ03A provides functional equivalence as an LCD driver with serial interface. However, package geometry differs (64-LQFP versus 80-TQFP), requiring PCB layout modifications and pinout verification before implementation.

Q: What are the key differences in electrical specifications between these parts?

A: The ML9472TBZ03A operates at higher supply current (500 µA versus 250 µA) and supports higher segment count (120 segments versus 54/108 segments). Supply voltage range differs slightly (3V ~ 5.5V versus 2.7V ~ 6V), with overlap in the 3V ~ 5.5V region.

Q: Is the ML9472TBZ03A suitable for applications requiring the full 2.7V supply voltage range?

A: No. The ML9472TBZ03A minimum supply voltage is 3V. Applications requiring operation below 3V cannot use this substitute without additional voltage regulation or alternative component selection.

Q: What is the significance of the different Moisture Sensitivity Levels (MSL)?

A: The LC75832WS-E has MSL 3 (168 hours), while the ML9472TBZ03A has MSL 1 (unlimited). MSL 1 indicates superior moisture resistance and less stringent storage and handling requirements, providing manufacturing process advantages.

Q: Are there pin-to-pin compatibility considerations?

A: No. The different package types (64-LQFP versus 80-TQFP) result in different pinout configurations. Complete schematic and PCB redesign is required for substitution.