CAT3626HV4-GT2 Equivalent & Substitute Parts

Part Overview

The CAT3626HV4-GT2 is an active LED driver IC manufactured by onsemi, designed for backlight applications requiring multi-channel DC-DC regulation with I2C dimming control. This component integrates a switched-capacitor (charge pump) topology with six independent 32mA output channels, operating from a 3V to 5.5V supply and delivering 7V output. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain disruptions, or specific application parameter adjustments while maintaining functional compatibility within the LED driver category.

Substiute Parts

CAT3626HV4-GT2

onsemiIn Stock: 6506CAT3626HV4-GT2 Datasheet

Current PartRFQ

BD2606MVV-E2

Rohm SemiconductorIn Stock: 21687BD2606MVV-E2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CAT3626HV4-GT2 is determined by the following critical parameters:

Core Functional Requirements:

• Topology: Switched Capacitor (Charge Pump) DC-DC Regulator
• Number of Outputs: 6 independent channels
• Dimming Interface: I2C digital control
• Application Category: LED backlight driver

Electrical Compatibility Criteria:

• Supply voltage range overlap (minimum 3V to 5.5V operation)
• Output voltage capability (7V nominal)
• Per-channel current capacity (minimum 32mA required)
• Operating frequency: 1MHz switching

Physical & Environmental Compatibility:

• Surface mount package with exposed pad
• Operating temperature range: -40°C to 85°C minimum
• RoHS3 compliance mandatory
• MSL 1 rating (unlimited moisture sensitivity)

The BD2606MVV-E2 from Rohm Semiconductor qualifies as a substitute based on matching topology, output count, I2C dimming control, and core electrical specifications, with the primary trade-off being reduced per-channel current capacity (20mA vs. 32mA).

Parameter Comparison

Engineering Selection Recommendations

Primary Part: CAT3626HV4-GT2

Select the CAT3626HV4-GT2 when applications require the full 32mA per-channel output capacity and extended low-temperature operation (-40°C minimum). This part maintains active production status with full RoHS3 compliance and unlimited MSL rating, ensuring long-term availability and environmental regulatory compliance.

Substitute Part: BD2606MVV-E2

The BD2606MVV-E2 serves as a functional substitute when per-channel current requirements do not exceed 20mA and minimum operating temperature is -30°C or higher. This part maintains identical topology, output count, I2C dimming interface, and regulatory compliance. The BD2606MVV-E2 is also in active production with RoHS3 compliance and MSL 1 rating.

Both parts are suitable for backlight applications within their specified electrical and thermal operating ranges. Package differences (16-WQFN vs. 16-VQFN) require PCB layout verification to ensure mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can BD2606MVV-E2 replace CAT3626HV4-GT2 in all applications?

A: The BD2606MVV-E2 is functionally compatible when per-channel current demand does not exceed 20mA and operating temperature remains above -30°C. Applications requiring the full 32mA per-channel capacity or extended low-temperature operation must use the CAT3626HV4-GT2.

Q: What are the package differences between these parts?

A: The CAT3626HV4-GT2 uses a 16-WQFN (4x4) package, while the BD2606MVV-E2 uses a 16-VQFN package. Both are surface-mount with exposed pads. PCB footprint verification is required before substitution.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the CAT3626HV4-GT2 and BD2606MVV-E2 are RoHS3 compliant with MSL 1 (unlimited) moisture sensitivity ratings.

Q: What is the key electrical difference between these parts?

A: The primary difference is per-channel output current: CAT3626HV4-GT2 delivers 32mA per channel, while BD2606MVV-E2 delivers 20mA per channel. The CAT3626HV4-GT2 also supports operation down to -40°C, compared to -30°C for the BD2606MVV-E2.

Q: Do both parts use the same I2C dimming protocol?

A: Yes. Both parts implement I2C digital dimming control with identical functional interface for backlight applications.

Q: What supply voltage ranges do these parts support?

A: CAT3626HV4-GT2 operates from 3V to 5.5V. BD2606MVV-E2 extends the lower range to 2.7V while maintaining the 5.5V maximum. Both support standard 3.3V and 5V supply rails.