MP3373GM-Z LED Driver Controller - Equivalent & Substitute Parts

Part Overview

The MP3373GM-Z is an active LED driver controller IC manufactured by Monolithic Power Systems Inc., designed for backlight applications requiring PWM dimming control. This 28-TSSOP surface mount device functions as a Step-Up (Boost) DC-DC controller with 8 output channels and operates across a 9V to 40V supply voltage range. The part is currently in active production status with 619 units in stock. Substitute parts are identified when original inventory becomes unavailable or when design requirements necessitate alternative sourcing options that maintain functional and electrical compatibility.

Substiute Parts

MP3373GM-Z

Monolithic Power Systems Inc.In Stock: 706MP3373GM-Z Datasheet

Current PartRFQ

TPS61199PWPR

Texas InstrumentsIn Stock: 6364TPS61199PWPR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP3373GM-Z is determined by the following critical parameters:

• Functional Type: DC DC Controller with Step-Up (Boost) topology
• Output Configuration: 8 output channels for LED driver applications
• Dimming Control: PWM dimming capability
• Supply Voltage Range: Minimum 9V input requirement; maximum 40V input tolerance
• Switching Frequency: 785kHz operation
• Package Compatibility: Surface mount TSSOP variant with 4.40mm width
• Compliance: ROHS3 compliance and active product status

The TPS61199PWPR from Texas Instruments qualifies as a substitute based on matching functional topology, 8-output LED driver configuration, PWM dimming control, and surface mount TSSOP packaging. Electrical parameter variations exist within acceptable design margins for backlight applications.

Parameter Comparison

Engineering Selection Recommendations

Both the MP3373GM-Z and TPS61199PWPR maintain active product status with ROHS3 compliance and REACH unaffected classification, ensuring regulatory alignment for current manufacturing standards. The MP3373GM-Z operates at a higher maximum supply voltage (40V vs. 30V) and junction temperature rating (125°C vs. 85°C ambient), making it suitable for applications requiring extended thermal headroom or higher input voltage tolerance. The TPS61199PWPR provides a lower minimum supply voltage threshold (8V vs. 9V) and specifies output current capability (70mA per channel), offering defined performance parameters for current-limited applications. Package pin count differs (28-TSSOP vs. 20-HTSSOP), requiring PCB layout redesign for substitution. Selection should be based on specific application voltage range, thermal environment, and available board space.

Frequently Asked Questions (FAQ)

Q: Can the TPS61199PWPR directly replace the MP3373GM-Z without PCB modifications?

A: No. The MP3373GM-Z uses a 28-pin TSSOP package while the TPS61199PWPR uses a 20-pin PowerTSSOP package. Pin assignments differ, requiring PCB layout redesign and schematic updates.

Q: What is the maximum supply voltage difference between these parts?

A: The MP3373GM-Z supports up to 40V input, while the TPS61199PWPR is rated to 30V maximum. Applications exceeding 30V input cannot use the TPS61199PWPR as a substitute.

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

A: No. The MP3373GM-Z operates to 125°C junction temperature, while the TPS61199PWPR is rated to 85°C ambient temperature. High-temperature applications may require the MP3373GM-Z.

Q: Do both parts support PWM dimming?

A: Yes. Both the MP3373GM-Z and TPS61199PWPR include PWM dimming capability for LED backlight control applications.

Q: What is the switching frequency difference?

A: The MP3373GM-Z operates at a fixed 785kHz frequency. The TPS61199PWPR operates across a 500kHz to 800kHz range, which encompasses the MP3373GM-Z frequency but allows for frequency variation.

Q: Are both parts RoHS compliant?

A: Yes. Both the MP3373GM-Z and TPS61199PWPR are ROHS3 compliant and REACH unaffected.