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MT7828C

APPLICATIONS
LED bulb, LED tube, LED signal and landscape lamp
LED stage light, LED candle light, LED corn light, etc.
General purpose constant current source

Product

Description

Vin(V)

Max drive capacity

PFC

Dimming

Package

PDF

MT7828C

Internal 500V MOS

85~264VAC

200mA
([email protected]
176v~264v)

>0.5

N/A

SOP8

MT7828C

DESCRIPTION
MT7828 is a high precision LED constant current control chip 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.
Critical conduction mode ensures that the MT7828 turns on the internal power MOSFET when the inductor current reaches zero, reducing the power MOSFET switching loss, and achieving more than 95% efficiency. With critical
conduction mode, MT7828 outputs high accuracy LED current, and further achieves excellent line regulation and load regulation. It’s insensitive to inductance and the I-shape inductor can be used.
MT7828 is intended for simplified peripheral circuits, low BOM cost application with an internal power MOSFET.
MT7828 has wide working voltage range, which is suitable for full-range AC input or 60V - 400V DC input voltage. MT7828 provides various protection features to enhance the system reliability, including over current protection (OCP),short circuit protection (SCP), and thermal adjustment, etc.

FEATURES
Critical Conduction Mode, insensitive to the inductance.
High efficiency (up to 95%)
Highly accurate constant LED current
Cycle-by-cycle current limitation
LED Short Circuit Protection
Leading edge blanking technique
Under-voltage lockout (UVLO) protection
Thermal adjustment
Available in SOP8 package

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