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MT7860

APPLICATIONS
Dimming lighting application
Smart LED Lamps with 2.4G/BLE/ZigBee
Other LED lighting application

Product

Description

Vin(V)

Max drive capacity

PFC

Dimming

Package

PDF

MT7860

External MOS

85~320VAC

1A

>0.9

PWM/Analog

SOP8

MT7860

DESCRIPTION
The MT7860 is a high power factor (PF) Buck LED Driver. It works under Quasi-Resonant Mode (QRM) which reduces both of current and voltage stress greatly, helps to improve EMI performance and efficiency. The output LED current is sensed by MT7860 with Quasi-full-cycle sensing (QCS) technology, accurate LED current regulation is achieved. The MT7860 is specially designed for intelligent dimming application. Dimming of LED current can be achieved by decoded PWM or analog signal. The accuracy and consistency of LED current, especially at low dimming level, is achieved by the internal trimming decoder. As Dimming level becomes lower, the switching control method goes from QRM to PFM (Pulse Frequency Modulation) seamlessly. Then smaller output current and lower switching loss are achieved. MT7860 provides varies of protections to improve the system reliability, including over voltage protection (OVP), over current protection(OCP), short circuit protection (SCP) and over temperature compensation, etc.

FEATURES
Single-stage active power factor correction (PFC > 0.90)
High precision LED current (±3%)
Good Line and Load Regulation (±2%)
Quasi-Resonant mode (QRM) operation
Various protection schemes.
PWM Dimming/ analog Dimming (100:1)
Available in SOP8 package

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Return Policy

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