MP3387AGRT-P Equivalent & Substitute Parts

Part Overview

The MP3387AGRT-P is an LED Driver IC manufactured by Monolithic Power Systems Inc., designed for backlight applications requiring output dimming control. This Surface Mount device in 24-TQFN (4x4) packaging is currently Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the allowed parameter ranges for LED driver applications.

Substiute Parts

MP3387AGRT-P

Monolithic Power Systems Inc.In Stock: 1095MP3387AGRT-P Datasheet

Current PartRFQ

ISL78171ARZ-T7A

Renesas Electronics CorporationIn Stock: 1249ISL78171ARZ-T7A Datasheet

MFR RecommendedRFQ

ISL97671AIRZ-T

Renesas Electronics CorporationIn Stock: 8100ISL97671AIRZ-T Datasheet

MFR RecommendedRFQ

TPS61181RTER

Texas InstrumentsIn Stock: 4468TPS61181RTER Datasheet

MFR RecommendedRFQ

TPS61183RTJR

Texas InstrumentsIn Stock: 26242TPS61183RTJR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP3387AGRT-P are qualified based on the following criteria:

Primary Substitution Parameters:

• Device Type: LED Driver IC with DC DC Regulator topology
• Topology: Step-Up (Boost) configuration
• Number of Outputs: 6 outputs
• Dimming Capability: Analog, I2C, or PWM control
• Application: Backlight
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant
• Product Status: Active

Secondary Compatibility Factors:

• Package form factor compatibility (QFN variants with exposed pad)
• Operating temperature range overlap
• Supply voltage range compatibility
• Output voltage capability
• Current per channel rating

The following parts meet the core substitution criteria for LED driver applications with equivalent functional performance:

1. ISL78171ARZ-T7A (Renesas Electronics) – 20-QFN package, 6 outputs, 50mA per channel, Analog/I2C/PWM dimming, Automotive grade
2. ISL97671AIRZ-T (Renesas Electronics) – 20-QFN package, 6 outputs, 50mA per channel, PWM dimming
3. TPS61181RTER (Texas Instruments) – 16-WQFN package, 6 outputs, 25mA per channel, PWM dimming
4. TPS61183RTJR (Texas Instruments) – 20-QFN package, 6 outputs, 30mA per channel, PWM dimming

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the MP3387AGRT-P.

ISL78171ARZ-T7A provides the highest feature parity with support for Analog, I2C, and PWM dimming modes, matching the output dimming capability of the main part. This device includes Automotive grade qualification (AEC-Q100) and extended operating temperature range to 105°C, suitable for demanding thermal environments. The 20-QFN (3x4) package requires PCB layout adjustment from the 24-TQFN form factor.

ISL97671AIRZ-T offers equivalent 6-output, 50mA per channel performance with PWM dimming and the highest output voltage capability at 45V. MSL rating of 3 requires controlled moisture exposure during storage and assembly.

TPS61181RTER in 16-WQFN (3x3) package provides the most compact footprint with reduced pin count. Current per channel is limited to 25mA, requiring application-level verification for current budget compatibility.

TPS61183RTJR matches the 20-QFN (4x4) package footprint of the ISL78171ARZ-T7A variant, offering 30mA per channel output current with PWM dimming control.

Frequently Asked Questions (FAQ)

Q: Can the MP3387AGRT-P be directly replaced with ISL78171ARZ-T7A without PCB modification?

A: No. The ISL78171ARZ-T7A uses a 20-QFN (3x4) package versus the MP3387AGRT-P 24-TQFN (4x4) package. Pin count and footprint differ, requiring PCB layout changes. However, the 6-output LED driver topology and dimming capabilities are functionally equivalent.

Q: Which substitute part has the lowest moisture sensitivity?

A: Both MP3387AGRT-P and ISL78171ARZ-T7A carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions. ISL97671AIRZ-T has MSL rating 3, requiring 168-hour dry storage before assembly.

Q: Are all substitute parts suitable for automotive applications?

A: ISL78171ARZ-T7A carries AEC-Q100 Automotive qualification. The remaining substitutes (ISL97671AIRZ-T, TPS61181RTER, TPS61183RTJR) are not specified with automotive qualification and should be verified against application requirements.

Q: What is the key difference in output current capability between substitutes?

A: TPS61181RTER provides 25mA per channel, TPS61183RTJR provides 30mA per channel, while ISL78171ARZ-T7A and ISL97671AIRZ-T both provide 50mA per channel. Application current requirements determine which substitute is suitable.

Q: Do all substitutes support the same dimming control methods?

A: No. ISL78171ARZ-T7A supports Analog, I2C, and PWM dimming. ISL97671AIRZ-T, TPS61181RTER, and TPS61183RTJR support PWM dimming only. Application firmware and control interface requirements must align with available dimming modes.

Q: Which substitute has the highest maximum output voltage?

A: ISL97671AIRZ-T provides 45V maximum output voltage, compared to 40V for ISL78171ARZ-T7A and 38V for both TPS61181RTER and TPS61183RTJR. High-voltage LED string applications may require the ISL97671AIRZ-T.