Primary Side Control Offline LED Controller with Active PFC

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Unit Price:$0.86
Minumum Qty: 2500
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Product Information

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The MP4021 is a primary-side–control offline LED lighting controller that achieves high power factor and accurate LED current for isolated single-power-stage lighting applications in a single SOIC8 package. The proprietary real-current control method accurately controls LED current from primary-side information. Eliminating the secondary-side feedback components and the optocoupler significantly simplifies the LED lighting system design.  The MP4021 integrates power factor correction and works in boundary conduction mode to reduce the MOSFET switching losses.  The extremely low start-up current and quiescent current reduces the total power consumption and provides a high-efficiency solution for lighting applications.   The multi-protection features of MP4021 greatly enhance system reliability and safety. The MP4021 features over-voltage protection, short-circuit protection, cycle-by-cycle current limiting, VCC UVLO, and auto-restart over-temperature protection.

Symmetry Electronics is an authorized Monolithic Power Systems distributor.


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Real current control without secondary-feedback circuit
Unique architecture for superior line regulation
High power factor=0.9 over universal input voltage
Boundary conduction mode improves efficiency
Ultra-low (20A) start-up current
Low (1mA) quiescent current
Input UVLO
Cycle-by-cycle current limit
Over-voltage protection
Short-circuit protection
Over-temperature protection
Available in an SOIC8 package


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Monolithic Power Systems Datasheet

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