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MT7844

APPLICATIONS
E14/E27/PAR30/PAR38/GU10 LED lamp
T8/T10 LED tube
Other LED lighting applications

Product

Description

Vin(V)

Max drive capacity

PFC

Dimming

Package

PDF

MT7844

Internal 550V MOS
JFET start

85~264VAC

15W

>0.9

N/A

SOP7

MT7844

DESCRIPTION
The MT7844 is a high-PF, non-isolate LED Driver IC. The floating-ground, high-side BUCK topology makes full wave detection possible. High precision output current is achieved. MT7844 works in Quasi-Resonant Mode (QRM), which improves both of efficiency and EMI performance. The system integrates the ultra-high voltage power supply circuit, the start-up resistor and power supply diode are not needed. Low external component count and cost is achieved. Various protections such as over voltage protection (OVP), over current protection (OCP) and over temperature compensation, etc. are embedded to improve reliability. The MT7844 integrates 550V MOSFET, which further simplifies external circuit.

FEATURES
Single-stage active power factor correction (PFC > 0.90)
Ultra-high voltage power supply without start-up resistor and power supply diode
High accurate LED current (±3%)
Good Line and Load Regulation (±2%)
Quasi-Resonant mode (QRM) operation
Various protection schemes.
Available in SOP7 packages

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