MP3385BGR-P LED Driver IC - Equivalent & Substitute Parts

Part Overview

The MP3385BGR-P is a 4-output LED driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management PMIC. This device functions as a DC-DC controller with step-up (boost) topology, designed for white LED backlight applications. The part operates with a supply voltage range of 4.5V to 33V and delivers an 80V output across four independent channels at 300mA per channel. The MP3385BGR-P is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Identifying equivalent substitute parts is necessary when the primary part number becomes unavailable due to supply constraints, inventory fluctuations, or procurement lead time requirements. Substitute parts must maintain identical electrical specifications, package compatibility, and functional characteristics to ensure direct replacement without circuit redesign.

Substiute Parts

MP3385BGR-P

Monolithic Power Systems Inc.In Stock: 1659MP3385BGR-P Datasheet

Current PartRFQ

MP3385BGR-Z

Monolithic Power Systems Inc.In Stock: 3504MP3385BGR-Z Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP3385BGR-P is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Equivalence Requirements:

• Identical DC-DC controller topology (Step-Up/Boost)
• Four independent output channels
• Supply voltage range: 4.5V to 33V
• Output voltage: 80V
• Output current per channel: 300mA
• Switching frequency range: 100kHz to 1MHz
• Dimming control methods: Analog, I2C, and PWM

Mechanical & Package Equivalence Requirements:

• Package type: 20-PowerVFQFN (4x4)
• Mounting type: Surface Mount with Wettable Flank
• Pin-to-pin compatibility

Compliance & Status Requirements:

• Active production status
• RoHS3 compliance
• MSL 1 rating

The MP3385BGR-Z meets all substitution criteria and is classified as a parametric equivalent to the MP3385BGR-P.

Parameter Comparison

Engineering Selection Recommendations

Both the MP3385BGR-P and MP3385BGR-Z are active production parts manufactured by Monolithic Power Systems Inc. with full RoHS3 compliance and identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

Availability & Lead Time: The MP3385BGR-Z currently maintains higher inventory levels (3402 units) compared to the MP3385BGR-P (1565 units). In procurement scenarios where lead time is critical, the MP3385BGR-Z may provide faster delivery.

Compliance Status: Both parts carry identical regulatory certifications including RoHS3 compliance, REACH unaffected status, and EAR99 ECCN classification. Both are suitable for applications requiring regulatory compliance documentation.

Production Continuity: Both parts maintain active production status, ensuring long-term availability and supply chain stability for new designs and production runs.

Direct Substitution: The MP3385BGR-Z is a direct pin-for-pin and functional equivalent to the MP3385BGR-P. No circuit modifications, PCB layout changes, or firmware updates are required when substituting between these parts.

Frequently Asked Questions (FAQ)

Q: Can the MP3385BGR-Z be used as a direct replacement for the MP3385BGR-P in existing designs?

A: Yes. The MP3385BGR-Z is a parametric equivalent with identical electrical specifications, package type, pin configuration, and functional characteristics. No design modifications are required.

Q: Are there any differences in the dimming control capabilities between these parts?

A: No. Both parts support identical dimming control methods: Analog, I2C, and PWM. All dimming functionality is equivalent.

Q: Do both parts have the same thermal operating range?

A: Yes. Both the MP3385BGR-P and MP3385BGR-Z operate across the identical temperature range of -40°C to 125°C (junction temperature).

Q: Is the package footprint identical between these two parts?

A: Yes. Both parts use the 20-PowerVFQFN (4x4) package with surface mount, wettable flank mounting type. PCB layouts are fully compatible.

Q: What is the significance of the different suffixes (-P and -Z) in the part numbers?

A: The suffix designations indicate different manufacturing batches or tape reel configurations from Monolithic Power Systems Inc. The electrical and functional specifications remain identical.

Q: Are both parts suitable for white LED backlight applications?

A: Yes. Both the MP3385BGR-P and MP3385BGR-Z are designed for white LED backlight applications with four independent 300mA output channels and 80V output capability.

Q: Do these parts require external switching elements?

A: No. Both parts are DC-DC controllers without internal switches. External MOSFETs or switching elements must be provided in the application circuit.

Q: What is the maximum switching frequency for these devices?

A: The maximum switching frequency for both parts is 1MHz, with a minimum frequency of 100kHz. The frequency is adjustable within this range.

Q: Are there any moisture sensitivity concerns with these parts?

A: No. Both parts carry an MSL 1 rating, indicating unlimited moisture sensitivity level. Standard handling and storage procedures are sufficient.

Q: Can these parts be used interchangeably in production without documentation updates?

A: Yes, provided that your quality and procurement procedures recognize both part numbers as approved equivalents. Documentation should reflect the substitution policy for traceability purposes.