EC4213

Constant Current N-Channel MOSFET

Linear LED Controller

E-CMOS Corp. (www.ecmos.com.tw)

4H22N Rev. F002

1/5

Q1

BR1

＋

－

1

2

3

4

10

9

8

7

5

6

GND

NTC

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

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.

TYPICAL APPLICATION CIRCUIT

Fig. 1 Simplified Application Circuit