MP3021DQ-LF-Z Equivalent & Substitute Parts

Part Overview

The MP3021DQ-LF-Z is a 4-output LED driver IC with integrated DC-DC regulator utilizing switched capacitor (charge pump) topology. Manufactured by Monolithic Power Systems Inc., this component is designed for backlight applications with 30mA per-channel output capability and 1.25MHz switching frequency. The part carries a "Not For New Designs" status, making identification of functionally equivalent alternatives essential for ongoing production and design continuity.

Substiute Parts

MP3021DQ-LF-Z

Monolithic Power Systems Inc.In Stock: 15962MP3021DQ-LF-Z Datasheet

Current PartRFQ

MP1519DQ-LF-Z

Monolithic Power Systems Inc.In Stock: 25251MP1519DQ-LF-Z Datasheet

MFR RecommendedRFQ

BD1604MUV-E2

Rohm SemiconductorIn Stock: 25208BD1604MUV-E2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP3021DQ-LF-Z is determined by the following critical parameters:

• Topology: Switched Capacitor (Charge Pump) architecture
• Number of Outputs: 4-channel configuration
• Package Type: 16-VFQFN Exposed Pad form factor
• Supply Voltage Range: Minimum 2.7V input capability
• Current Capacity: 30mA per-channel output
• Application: Backlight LED driver functionality
• Compliance: ROHS3 and REACH requirements

Two substitute parts meet these criteria: the MP1519DQ-LF-Z (Monolithic Power Systems Inc.) and the BD1604MUV-E2 (Rohm Semiconductor). Both maintain the 4-output switched capacitor topology, identical package footprint, and backlight application suitability. Variations in switching frequency, dimming capability, and current per channel represent design trade-offs within acceptable substitution parameters.

Parameter Comparison

Engineering Selection Recommendations

MP1519DQ-LF-Z is the preferred substitute for new production and design continuity. This part carries Active product status, ensuring long-term availability and manufacturer support. It maintains identical package footprint and supply voltage range compatibility. The 22mA per-channel output is suitable for applications where the full 30mA capacity is not required. The addition of analog dimming capability provides enhanced functionality. All compliance certifications (ROHS3, REACH) align with the original part.

BD1604MUV-E2 serves as an alternative substitute with equivalent 30mA per-channel output matching the original specification. However, this part carries "Not For New Designs" status, limiting its suitability for long-term production planning. The operating temperature minimum of -30°C (versus -40°C) may present constraints in extended temperature range applications. This option is appropriate only where existing supply chains or legacy system requirements necessitate its use.

Frequently Asked Questions (FAQ)

Q: Can MP1519DQ-LF-Z replace MP3021DQ-LF-Z in existing designs?

A: Yes. Both parts share identical 16-VFQFN package footprint, 4-output configuration, and switched capacitor topology. The 22mA per-channel output of the MP1519DQ-LF-Z is compatible with applications designed for 30mA operation. Analog dimming capability in the MP1519DQ-LF-Z is an additional feature not present in the original part.

Q: What is the impact of the 8mA current difference between MP3021DQ-LF-Z and MP1519DQ-LF-Z?

A: The MP1519DQ-LF-Z provides 22mA per channel versus 30mA in the original. This difference affects maximum LED brightness and power delivery capability. Applications requiring full 30mA output should use BD1604MUV-E2 or confirm that 22mA meets system requirements.

Q: Are all substitute parts pin-compatible?

A: Yes. All three parts utilize the 16-VFQFN Exposed Pad package with identical pinout and footprint, enabling direct PCB-level substitution without layout modifications.

Q: Why is MP1519DQ-LF-Z recommended over BD1604MUV-E2?

A: MP1519DQ-LF-Z carries Active product status, ensuring manufacturer support and long-term availability. BD1604MUV-E2 is marked "Not For New Designs," indicating potential supply discontinuation. For production continuity, MP1519DQ-LF-Z is the strategic choice.

Q: Do all parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting identical regulatory and environmental standards.

Q: What is the significance of the switching frequency difference?

A: Switching frequencies range from 1MHz (BD1604MUV-E2) to 1.3MHz (MP1519DQ-LF-Z). These variations affect EMI characteristics, efficiency, and component selection for external filtering. System design must accommodate the specific frequency of the selected part.