MP3318GC-P LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP3318GC-P is an active production LED Driver IC manufactured by Monolithic Power Systems, designed for backlight applications. This 12-WLCSP packaged device integrates a three-output DC-DC step-up (boost) regulator with PWM dimming capability, operating from a 2.7V to 5.5V supply and delivering up to 50mA per channel at 38V output. Equivalent and substitute parts are identified based on matching functional topology, electrical performance parameters, and package compatibility to support component procurement flexibility and supply chain continuity.

Substiute Parts

MP3318GC-P

Monolithic Power SystemsIn Stock: 1020MP3318GC-P Datasheet

Current PartRFQ

LM3699YFQR

Texas InstrumentsIn Stock: 17304LM3699YFQR Datasheet

MFR RecommendedRFQ

TPS61300YFFR

Texas InstrumentsIn Stock: 968TPS61300YFFR Datasheet

MFR RecommendedRFQ

TPS61301YFFT

Texas InstrumentsIn Stock: 2334TPS61301YFFT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP3318GC-P are identified based on the following critical parameters that determine functional equivalence:

• Topology: Step-Up (Boost) DC-DC regulator with internal switch
• Number of Outputs: Three independent outputs
• Supply Voltage Range: 2.7V to 5.5V input compatibility
• Dimming Control: Analog or PWM dimming capability
• Package Type: Surface mount BGA variants (WLCSP, DSBGA, UFBGA)
• Product Status: Active production status
• Compliance: ROHS3 compliant, MSL 1 rating

The identified substitutes (LM3699YFQR, TPS61300YFFR, TPS61301YFFT) share the core topology and supply voltage specifications. Variations in output current, output voltage, frequency, and dimming method reflect design trade-offs for specific application requirements while maintaining functional interchangeability within the backlight and camera flash application domains.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active production status and ROHS3 compliance with MSL 1 rating, ensuring regulatory and environmental compatibility with the MP3318GC-P.

LM3699YFQR shares the closest supply voltage range (2.7V to 5.5V) and operating temperature specification (-40°C to 125°C). This part supports both backlight and camera flash applications with PWM dimming control. The 12-DSBGA package (1.64x1.24) differs from the MP3318GC-P 12-WLCSP (1.3x1.7) footprint; PCB layout redesign is required. Output current per channel is 20.2mA, lower than the MP3318GC-P 50mA specification.

TPS61300YFFR and TPS61301YFFT provide higher output current capability (400mA, 800mA flash mode) and support I2C dimming control, suitable for camera flash applications. Both operate at reduced temperature range (-40°C to 85°C ambient) and require 20-pin DSBGA packages, necessitating significant PCB redesign. Output voltage is specified at 5.7V, differing from the MP3318GC-P 38V specification.

Selection between substitutes depends on application-specific requirements for output current, output voltage, dimming protocol, operating temperature range, and package footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can LM3699YFQR directly replace MP3318GC-P in a backlight application?

A: LM3699YFQR shares the three-output boost topology and 2.7V to 5.5V supply range. However, the 20.2mA per-channel output current is lower than MP3318GC-P 50mA, and the 12-DSBGA (1.64x1.24) package differs from 12-WLCSP (1.3x1.7). PCB layout modification is required. Verify output current requirements before substitution.

Q: What is the primary difference between TPS61300YFFR and TPS61301YFFT?

A: Both parts share identical electrical specifications (400mA, 800mA flash, 1.92MHz, I2C dimming, 5.7V output, 2.5V to 5.5V supply). The distinction lies in manufacturer part numbering and base product designation (TPS61300 vs. TPS61301). Electrical performance and package are equivalent.

Q: Why do TPS61300YFFR and TPS61301YFFT have lower operating temperature range than MP3318GC-P?

A: TPS61300YFFR and TPS61301YFFT specify -40°C to 85°C ambient temperature (TA), while MP3318GC-P specifies -40°C to 125°C junction temperature (TJ). These parts are optimized for camera flash applications with different thermal management profiles. Confirm application temperature requirements before selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. MP3318GC-P, LM3699YFQR, TPS61300YFFR, and TPS61301YFFT are all ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating, meeting environmental and regulatory requirements.

Q: What package considerations apply when substituting MP3318GC-P?

A: MP3318GC-P uses 12-WLCSP (1.3x1.7) packaging. LM3699YFQR uses 12-DSBGA (1.64x1.24), while TPS61300YFFR and TPS61301YFFT use 20-DSBGA packages. Each substitution requires PCB footprint redesign and layout validation. Verify pin assignments and thermal pad requirements for each package variant.

Q: Can I substitute MP3318GC-P with TPS61300YFFR for a backlight application?

A: TPS61300YFFR is specified for camera flash applications with I2C dimming control and 5.7V output voltage. The MP3318GC-P is specified for backlight applications with 38V output and analog/PWM dimming. Output voltage and dimming protocol differences require application-level verification before substitution.