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MT7817BD

APPLICATIONS
LED tube, signal lamp, landscape lamp
LED stage light, etc
Intelligent LED lighting application

Product

Description

Vin(V)

Max drive capacity

PFC

Dimming

Package

PDF

MT7817BD

Internal 500V MOS,
OVP

85~264VAC

350mA

>0.5

PWM/Analog

DIP7

MT7817BD

DESCRIPTION
MT7817BD is a high precision LED constant current controller operating at critical conduction mode (CRM) with zero current switched-on and peak current switched-off. It’s mainly targeted for non-isolated buck LED power systems and PWM/Analog dimmable application.
Critical conduction mode ensures that the MT7817BD turns on the internal switch when the inductor current reaches zero, reducing the switch-on switching losses, and achieving more than 93% efficiency.
With critical conduction mode, and the input compensation, MT7817BD outputs high accuracy LED current, and further achieves excellent line regulation and load regulation.
MT7817BD has wide working voltage range, which is suitable for full-range AC input or 12V ~ 500V DC input voltage. MT7817BD provides various protection features to improve the system reliability, including over current protection (OCP), short circuit protection (SCP), adjustable over voltage protection (OVP) and over temperature regulation (OTR), etc.

FEATURES
Internal 500V power MOSFET
Critical Conduction Mode, insensitive to the inductance
PWM/ Analog dimming function
High efficiency (up to 93%)
Highly accurate constant LED current
Cycle-by-cycle current limiting
LED short circuit protection
Adjustable LED over voltage protection
Leading edge blanking technique
Under-voltage lockout (UVLO) protection
Over temperature regulation (OTR)
Available in DIP7 package

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Return Policy

30 Days Service

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Call +86-755-8418 2951