LC749402PT-H Equivalent & Substitute Parts

Part Overview

The LC749402PT-H is an active LCD driver IC manufactured by onsemi, designed for picture improvement applications in LCD display systems. This Surface Mount device operates in the Power Management (PMIC) category and is housed in a 100-TQFP package. The part is currently in active production status with 1039 units available in new original inventory. Alternative components may be required due to supply constraints, design modifications, or application-specific packaging requirements.

Substiute Parts

LC749402PT-H

onsemiIn Stock: 1144LC749402PT-H Datasheet

Current PartRFQ

HV66PG-G

Microchip TechnologyIn Stock: 3296HV66PG-G Datasheet

SimilarRFQ

HV66PJ-G

Microchip TechnologyIn Stock: 1090HV66PJ-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LC749402PT-H are identified based on the following critical parameters that determine functional compatibility:

• Display Type: LCD driver functionality
• Product Status: Active production status
• Compliance: ROHS3 and REACH compliance
• Mounting Type: Surface Mount technology
• Operating Temperature Range: -40°C ~ 85°C
• Supply Voltage Range: Compatible power supply specifications
• Current Consumption: Within acceptable operational limits

The substitute parts HV66PG-G and HV66PJ-G are Microchip Technology LCD drivers that maintain the same display type, operating temperature range, and compliance certifications. However, these substitutes differ in package configuration, interface protocol, and electrical specifications. Substitution is valid only when application requirements permit these parameter variations.

Parameter Comparison

Engineering Selection Recommendations

All three components maintain active production status and full compliance with ROHS3 and REACH regulations, ensuring regulatory acceptability for new designs and production environments.

The LC749402PT-H operates at lower supply voltage (2.6V ~ 3.6V) with higher current consumption (57 mA) and uses I2C interface protocol. The HV66PG-G and HV66PJ-G operate at higher supply voltage (4.5V ~ 5.5V) with lower current consumption (15 mA) and use Serial interface protocol. These electrical and interface differences require circuit-level design modifications and are not transparent substitutions.

Package selection between HV66PG-G (44-QFP, 10x10mm) and HV66PJ-G (44-PLCC, 16.59x16.59mm) depends on PCB layout constraints and assembly process capabilities. The HV66PJ-G offers superior moisture handling with MSL 1 rating compared to MSL 3 for both other components.

Frequently Asked Questions (FAQ)

Q: Can HV66PG-G or HV66PJ-G be used as direct pin-for-pin replacements for LC749402PT-H?

A: No. The substitute parts differ in package type (44-pin QFP/PLCC versus 100-pin TQFP), pin count, interface protocol (Serial versus I2C), and electrical specifications (voltage and current ratings). PCB redesign and firmware modifications are required.

Q: What are the key differences in electrical specifications?

A: The LC749402PT-H requires 2.6V to 3.6V supply voltage with 57 mA current consumption. The HV66PG-G and HV66PJ-G require 4.5V to 5.5V supply voltage with 15 mA current consumption. Power supply circuits and current budgeting must be recalculated.

Q: How do the interface protocols differ?

A: The LC749402PT-H uses I2C serial communication protocol. The HV66PG-G and HV66PJ-G use Serial interface protocol. Host microcontroller firmware must be modified to support the different communication standard.

Q: What is the difference between HV66PG-G and HV66PJ-G?

A: Both parts are functionally identical Microchip LCD drivers with identical electrical specifications. The primary differences are package type (44-QFP versus 44-PLCC) and moisture sensitivity level (MSL 3 versus MSL 1). Selection depends on PCB assembly process and storage environment requirements.

Q: Are all three parts suitable for the same operating temperature range?

A: Yes. All three components operate across -40°C to 85°C, meeting identical temperature specifications.

Q: What compliance certifications apply to all substitute options?

A: All three parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.