MP3394EF-LF-Z Equivalent & Substitute Parts

Part Overview

The MP3394EF-LF-Z is a LED Driver IC 4 Output DC DC Controller with Step-Up (Boost) topology designed for backlight applications. This device features PWM dimming capability, 200mA per-channel output current, and operates across a 5V to 28V supply voltage range in a 16-TSSOP package with exposed pad. The part is classified as Not For New Designs, making identification of active equivalent alternatives essential for ongoing production and new project development.

Substiute Parts

MP3394EF-LF-Z

Monolithic Power Systems Inc.In Stock: 17149MP3394EF-LF-Z Datasheet

Current PartRFQ

MP3397EF-LF

Monolithic Power Systems Inc.In Stock: 1018MP3397EF-LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP3394EF-LF-Z is determined by the following critical parameters:

• Topology & Function: Step-Up (Boost) DC DC Controller with 4 outputs for LED driver applications
• Package Compatibility: 16-TSSOP with exposed pad (identical physical footprint required)
• Supply Voltage Range: 5V to 28V input compatibility
• Dimming Method: PWM dimming capability
• Switching Frequency: 540kHz operation
• Output Current Capability: Minimum 200mA per channel (equal or greater)
• Compliance Standards: ROHS3 Compliant, REACH Unaffected

The MP3397EF-LF qualifies as a direct substitute based on matching topology, package, supply voltage range, frequency, and dimming method. The substitute provides enhanced output current capability (350mA vs 200mA) and extended operating temperature range, with Active product status enabling continued design support.

Parameter Comparison

Engineering Selection Recommendations

The MP3397EF-LF is the manufacturer-recommended substitute for the MP3394EF-LF-Z. Selection should be based on the following criteria:

For Existing Designs Using MP3394EF-LF-Z: The MP3397EF-LF provides direct functional replacement with identical package footprint, supply voltage range, switching frequency, and PWM dimming architecture. The increased output current rating (350mA vs 200mA per channel) ensures compatibility with designs operating at or below the original 200mA specification.

For New Designs: The MP3397EF-LF is the appropriate choice due to Active product status, ensuring long-term availability, manufacturing support, and continued compliance with evolving regulatory standards. The extended operating temperature range (-40°C to 125°C vs -20°C to 125°C) provides additional thermal margin for demanding applications.

Compliance Verification: Both parts maintain ROHS3 Compliant and REACH Unaffected status, ensuring regulatory alignment for current and future production requirements.

Frequently Asked Questions (FAQ)

Q: Can the MP3397EF-LF be used as a direct replacement for the MP3394EF-LF-Z in existing PCB designs?

A: Yes. Both devices share identical 16-TSSOP package geometry with exposed pad, matching pin configuration, and electrical interface requirements. No PCB layout modifications are required for substitution.

Q: What is the primary difference between these two parts?

A: The MP3397EF-LF provides 350mA per-channel output current compared to the MP3394EF-LF-Z's 200mA rating. The substitute also features an extended operating temperature range of -40°C to 125°C versus -20°C to 125°C, and maintains Active product status for ongoing design support.

Q: Are there any functional differences in dimming or switching behavior?

A: No. Both parts operate at 540kHz switching frequency with PWM dimming capability. The control architecture and dimming response characteristics remain identical.

Q: Why is the MP3394EF-LF-Z marked as Not For New Designs?

A: This designation indicates the part has reached end-of-life status within the manufacturer's product portfolio. The MP3397EF-LF represents the active successor, offering equivalent functionality with enhanced specifications and continued manufacturing support.

Q: Will designs using the MP3397EF-LF require different external component values?

A: External component selection depends on specific application requirements (output voltage, load current, input source characteristics). The identical topology and switching frequency suggest compatibility with existing reference designs, though component optimization may be beneficial given the increased current capability.

Q: Are both parts available in the same packaging options?

A: Both parts are supplied in 16-TSSOP-EP (Exposed Pad) package configuration. Packaging format compatibility is confirmed for direct substitution.