MP4051

MP4051

NOT RECOMMENDED FOR NEW DESIGNS

Primary Side Control Offline Non-Isolated LED Controller with Active PFC

ALTERNATIVE PART

NRFND Datasheet

MP4051 continues to be in production for existing customers. Please consider this alternative for new designs:

MP4054

Non-isolated Offline LED Controller with Active PFC

Features & Benefits

Unique Architecture for Superior Line Regulation
Achieve <1% Line and Load Regulation for High-Side Non-Isolated Solution
High PF (≥0.9) over Universal Input Voltage
Valley Switching Mode for Improved Efficiency
Brown-Out Protection
Over-Voltage Protection
Short-Circuit Protection
Over-Temperature Protection
Over-Current Protection
Cycle-By-Cycle Current Limit
VCC Under-Voltage Lockout Protection
Auto-Restart Function
Available in TSOT23-8 Package

… and many more!

Parameters Description

Vac (min) (V)
85
Vac (max) (V)
305
Open LED Protection
Yes
Type
Buck-Boost
Pout (max) (W) (Recommended)
40
Vfb (V)
0.4
fsw (max) (kHz)
333
Iq (mA)
0.75
Ishutdown (µA)
20
Sync
No
Grade
Catalog
Package (mm)
SOIC-8
Topology
Buck-Boost
Triac Dimming
No
PFC
Yes
Applications
PFC
Power Range Defined
No
Vin (min) (V)
120
Vin (max) (V)
431.3
Active PFC
Yes
Isolated
No
Isolated LLC
No
Isolated Flyback
No
Non-Isolated
Yes
Low Side Rectification
No
High Side Rectification
No
Vin (max) (V) AC
305
Vin (min) (V) AC
85
Secondary Synchronous Rectification
No

The MP4051 is a non-isolated offline LED lighting controller that achieves high power factor and accurate LED current for single-stage PFC lighting applications in a single SOIC8 package. The MP4051 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 non-isolated lighting applications. The multi-protection features of MP4051 greatly enhance system reliability and safety. The MP4051 features over-voltage protection, short-circuit protection, cycle-by-cycle current limiting, VCC UVLO, and auto-restart over-temperature protection.