LC75890W-NH Equivalent & Substitute Parts

Part Overview

The LC75890W-NH is an LCD driver IC manufactured by onsemi, designed for driving 37 or 148 segment LCD displays. This device operates as a serial interface LCD driver in a 48-SQFP surface mount package. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support, design updates, and production continuity.

Substiute Parts

LC75890W-NH

onsemiIn Stock: 1075LC75890W-NH Datasheet

Current PartRFQ

BU91600FUV-ME2

Rohm SemiconductorIn Stock: 933BU91600FUV-ME2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LC75890W-NH is determined by the following critical parameters:

Functional Compatibility:

• Display type: LCD driver
• Configuration capability: Must support 148 segment operation (the primary use case for this device)
• Interface type: Serial interface requirement
• Pin count and package footprint: 48-pin surface mount package

Electrical Compatibility:

• Supply voltage range: Must overlap with or exceed the 2.7V ~ 3.6V requirement
• Supply current: Must be within acceptable operating parameters
• Operating temperature range: Must cover the -40°C ~ 85°C specification

Compliance & Quality:

• RoHS3 compliance required
• Moisture sensitivity level: MSL 3 or better
• REACH compliance status

The BU91600FUV-ME2 from Rohm Semiconductor meets these substitution criteria through equivalent LCD driver functionality, 148 segment configuration support, serial interface compatibility, and 48-pin surface mount packaging in a compatible form factor.

Parameter Comparison

Engineering Selection Recommendations

The BU91600FUV-ME2 is an active product with current manufacturing support, addressing the obsolescence status of the LC75890W-NH. Both devices maintain ROHS3 compliance and identical moisture sensitivity specifications.

The BU91600FUV-ME2 provides extended voltage tolerance (2.7V ~ 6V versus 2.7V ~ 3.6V) and wider operating temperature range (-40°C ~ 105°C versus -40°C ~ 85°C). The substitute device carries automotive-grade qualification (AEC-Q100), indicating enhanced reliability and process control.

Package form factor differs between the two devices: the original uses 48-LQFP while the substitute uses 48-VFSOP. This difference requires PCB layout evaluation to confirm mechanical compatibility. Both maintain 48-pin surface mount configuration.

Current consumption of the BU91600FUV-ME2 (120 µA) is lower than the LC75890W-NH (135 µA), providing improved power efficiency.

Frequently Asked Questions (FAQ)

Q: Can the BU91600FUV-ME2 directly replace the LC75890W-NH without PCB modifications?

A: Both devices use 48-pin surface mount packages, but the package types differ (48-LQFP versus 48-VFSOP). Pin-to-pin compatibility must be verified against the specific pinout documentation. PCB footprint adjustment may be required.

Q: What is the significance of the BU91600FUV-ME2 being automotive-grade?

A: Automotive-grade qualification (AEC-Q100) indicates the device has undergone enhanced reliability testing and process controls. This provides higher confidence in long-term performance and consistency, though it is not a requirement for non-automotive applications.

Q: Does the extended voltage range of the BU91600FUV-ME2 affect compatibility?

A: The substitute's 2.7V ~ 6V range encompasses the original 2.7V ~ 3.6V specification. Systems designed for the LC75890W-NH operating within the original voltage range will function within the substitute's specified range.

Q: Are there segment configuration differences between these devices?

A: The LC75890W-NH supports both 37 and 148 segment configurations. The BU91600FUV-ME2 supports 148 segment operation. If your application requires 37 segment operation exclusively, alternative substitutes must be evaluated.

Q: What packaging considerations apply to this substitution?

A: The LC75890W-NH uses 48-SQFP (7x7mm) packaging while the BU91600FUV-ME2 uses 48-TSSOP-CV packaging. Physical dimensions and pin spacing differ. Verify PCB layout compatibility and reflow profile requirements before implementation.

Q: Are both devices compliant with current regulatory requirements?

A: Both devices are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic components in most markets.