MT7930 MAXIC | Alldatasheet

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Technical content

Maximizing IC Performance Single Stage, High PFC, AC-DC LED Driver Tel: 86-10-62662828 Copyright © 2011 Maxic Technology Corporation Page 1

DESCRIPTION

MT7930 is a single-stage, primary side control AC-DC LED driver with high power factor. With MAXIC patent pending technology, the LED current can be regulated accurately through sensing the primary side information with few external components without the need of an opto-coupler. MT7930 integrates power factor correction function and works in DCM and constant OFF time mode. A small harmonic current emission (THD) is achieved. MT7930 is also implemented with various protections, such as over-current protection (OCP), over-voltage protection (OVP), short-circuit protection (SCP) and over-temperature protection (OTP), etc, to ensure a reliable system.

FEATURES

 Wide input voltage range from AC85V to AC265V  Highly accurate constant LED current (±3%)  Up to 80W power drivability.  Primary-side current sensing and regulation without an opto-coupler  Leading edge blanking (LEB) technique  Cycle-by-cycle current limiting  Under-voltage lockout (UVLO) protection  VDD and output over voltage protection  Adjustable constant current and output power setting  Power on soft-start  Available in SOP8 package

APPLICATIONS

 AC/DC LED driver applications  General purpose constant current source  Signal and decorative LED lighting  E27/PAR30/PAR38/GU10 etc. LED lamp Typical Application Circuit