MP4689DN-LF-P LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP4689DN-LF-P is a 100V input, 1A high-power LED driver IC manufactured by Monolithic Power Systems Inc. This device functions as a step-down (buck) DC-DC regulator with PWM dimming capability, designed for lighting applications. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and design continuity where this component is already deployed.

Substiute Parts

MP4689DN-LF-P

Monolithic Power Systems Inc.In Stock: 1060MP4689DN-LF-P Datasheet

Current PartRFQ

MP4689AGN-P

Monolithic Power Systems Inc.In Stock: 877MP4689AGN-P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP4689DN-LF-P is determined by strict parameter matching across the following critical specifications:

Electrical Parameters:

• Input voltage range: 4.5V to 100V (must match exactly)
• Topology: Step-Down (Buck) configuration
• Output channels: Single output
• Switching frequency: 1 MHz
• Dimming method: PWM control
• Internal integrated switch: Required

Mechanical & Environmental Parameters:

• Package: 8-SOIC with exposed pad (8-SOIC-EP)
• Operating temperature: -40°C to 125°C
• Moisture sensitivity: 2A (4 Weeks)
• RoHS compliance: ROHS3 Compliant

Regulatory & Compliance:

• REACH status: REACH Unaffected
• ECCN classification: EAR99
• HTSUS code: 8542.39.0001

Only parts meeting all these parameters are classified as direct parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

MP4689AGN-P as Primary Substitute:

The MP4689AGN-P is a direct parametric equivalent to the MP4689DN-LF-P. All electrical specifications, mechanical dimensions, environmental ratings, and regulatory compliance parameters are identical. The primary distinction is product status: MP4689AGN-P is classified as "Active," whereas the MP4689DN-LF-P is "Not For New Designs."

Selection Basis:

1. Compliance Alignment: Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical ECCN/HTSUS classifications, ensuring regulatory continuity.

2. Thermal & Environmental Compatibility: Identical operating temperature range (-40°C to 125°C) and moisture sensitivity rating (2A, 4 Weeks) confirm environmental equivalence.

3. Functional Interchangeability: Matching input voltage range (4.5V–100V), switching frequency (1 MHz), PWM dimming control, and single-output buck topology ensure functional compatibility in existing circuit designs.

4. Package Compatibility: Both devices use 8-SOIC-EP packaging with identical physical dimensions (0.154", 3.90mm width), enabling direct PCB footprint compatibility without layout modifications.

5. Active Product Status: MP4689AGN-P's active status provides supply chain continuity and ongoing manufacturer support, addressing the obsolescence of the MP4689DN-LF-P.

Frequently Asked Questions (FAQ)

Q1: Can MP4689AGN-P be used as a direct replacement for MP4689DN-LF-P in existing designs?

A: Yes. The MP4689AGN-P is a direct parametric equivalent. All electrical specifications, package dimensions, and environmental ratings are identical. No circuit modifications or PCB redesign are required.

Q2: Are there any differences in dimming performance between these parts?

A: No. Both devices implement PWM dimming control at identical specifications. Dimming functionality and control characteristics are equivalent.

Q3: What is the significance of the product status difference (Not For New Designs vs. Active)?

A: Product status indicates lifecycle phase. MP4689DN-LF-P is end-of-life; MP4689AGN-P is in active production. For new designs, MP4689AGN-P should be selected. For existing production using MP4689DN-LF-P, MP4689AGN-P provides equivalent functionality with ongoing supply availability.

Q4: Are the packaging and moisture sensitivity ratings identical?

A: Yes. Both parts use 8-SOIC-EP packaging and carry MSL 2A (4 Weeks) ratings. Storage and handling requirements are identical.

Q5: Do both parts meet automotive-grade requirements?

A: The MP4689DN-LF-P is specified as automotive-grade. The MP4689AGN-P specification provided does not explicitly state automotive grade classification. Verify automotive qualification requirements with the manufacturer if automotive-grade certification is mandatory for your application.

Q6: What is the inventory status for each part?

A: MP4689DN-LF-P: 1024 Pcs (New Original, In Stock). MP4689AGN-P: 800 Pcs (New Original, In Stock). Availability may vary; consult current distributor inventory for procurement planning.

Q7: Are regulatory certifications identical between the two parts?

A: Yes. Both parts are ROHS3 compliant, REACH Unaffected, classified as EAR99, and share the same HTSUS code (8542.39.0001).