EC4213 Datasheet, PDF (1/5 Pages) E-CMOS Corporation – Constant Current N-Channel MOSFET Linear LED Controller

Constant Current N-Channel MOSFET
Linear LED Controller
EC4213
FEATURES
• Universal Input Voltage Range of 120VAC±16%
or 230VAC±16%
• Constant LED Current Controller
• Adjusted Constant Current Operation
• Low Quiescent Current
• Simplifies Circuit and System Designs
• PWM Dimming Control
• External N-channel MOSFET for High Current
Application
• Temperature Compensated Constant Current
• Programmable Over Temperature Protection
• Programmable Over Current Protection
• Programmable LED Short Protection
• SOP10 Package
APPLICATIONS
• High Power LED Driver
• Lighting Applications
• T5 or T8 tube
• Low Cost solution
• Constant Current Sink
TYPICAL APPLICATION CIRCUIT
GENERAL DESCRIPTION
The EC4213 is a constant N-channel MOSFET
current linear LED controller for replace discrete
solutions in AC/DC power application (up to
270VAC). The controller can drive an output power
of ±10% variation from a universal input voltage
range of 120VAC±16%, or 230VAC±16% for
different LED strings. The solution eliminates the
need of individual components by combining them
into a single package, which results in a significant
reduction of both system cost and board space.
The controller is capable of a dimming input for
adjustable LED brightness control by Pulse Width
Modulation (PWM). The EC4213 can protect the
external N-channel MOSFET against over
temperature and over current. Internal thermal
foldback function regulates LED driving current
automatically for temperature management of the
LEDs or the N-channel MOSFET during high power
operation or high ambient temperature conditions
by an external NTC resistor. These features
provide maximum system protection for the
demanding lighting applications. The EC4213 is
available in a space saving SOP10 package, and
the operating temperature is from –40°C to
+125°C.
BR1
R₁
1 _VIN
2
GND
3
VFF
4
DIM
R₂
5 _VS
VO ¹⁰
9
VCS
REXT ⁸
7
LEDS
NTC ⁶
I_LED
R₄
＋
V_LED
－
Q1
R_CS
R_NTC
R₅
R_EXT
R₃
Fig. 1 Simplified Application Circuit
E-CMOS Corp. (www.ecmos.com.tw)
1/5
4H22N Rev. F002