Product Page

MT7990

APPLICATIONS
Intelligent LED lighting
Battery chargers for cellular phones, pads, power tools, etc.
High PF, low ripple LED driver

Product

Description

Vin(V)

Max drive capacity

PFC

Dimming

Package

PDF

MT7990

CV/CC,External MOS
THD<10%

85~320VAC

80W

>0.9

N/A

SOP8

MT7990

DESCRIPTION
MT7990 is a high precision primary-side constant voltage controller while achieving power factor correction. Both of regulations of constant - voltage (CV) and current - limiting (CL) are integrated into the MT7990. MT7990 outputs constant voltage while the LED current is within the range of current limiting, it will limit the output current while the output voltage decreases as the load increases. MT7990 can adjust the working mode automatically to save efficiency and enlarge output loading range. It works under Quasi-Resonant Mode (QRM) at heavy loading, under Discontinuous Conduction Mode (DCM) at medium loading and under Pulse Frequency Mode (PFM) at light loading. So that it can be achieved to save efficiency and enlarge output loading range. Various protection schemes are integrated to improve robustness, including over temperature protection (OTP), over voltage protection (OVP), and short circuit protection (SCP), etc.

FEATURES
Start-up without internal/external HV MOS
Wide output loading range
QRM at heavy loading to reduce EMI
Accurate output voltage sensing and cable drop compensation
Fast response for CV regulation
Low output ripple for CV regulation
Various protection schemes
Power-on soft-start
Available in SOP8 package

Free Shipping

Order over $99

Money Return

100% Guarentee

Return Policy

30 Days Service

24/7 Support

Call +86-755-8418 2951