EC4213 datasheet(3/5 Pages) E-CMOS

3 / 5 page

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

4H22N Rev. F002

EC4213

Constant Current N-Channel MOSFET

Linear LED Controller

3/5

VIN

GND

REXT

Regulator

VCC

VFF

Voltage

Reference

NTC

Thermal

Regulation

DIM

VCS

Control

Circuits

LEDS

FUNCTION DIAGRAM

PIN DESCRIPTIONS

Ordering Information

Part No.

Package Type

Marking Information

Remark

EC4213NNM1R

SOP-10L

EC4213

LLLLL

YYWWT

LLLLL：Lot No

YYWW：Date Code

T：Internal Tracking Code

Symbol

Description

VIN

Input supply voltage.

GND

All external components are connected to ground pin with shortest loops feasible.

VFF

Input voltage sensing through a voltage divider for constant output power regulation.

DIM

Connect a logic level PWM signal for adjustable brightness of LED strings.

External voltage reference for thermal foldback circuit.

NTC

Connect a divider of a resistor and thermistor from VS to monitor the temperature of the LEDs or the N-

channel MOSFET.

LEDS

LED Short Protection.

REXT

An external resistor between REXT and GND pin sets different current regulation for LED strings.

VCS

A resistor is connected between VCS and REXT pin for over current protection.

Connect to gate of N-channel MOSFET.

Fig. 2 Detailed Block Diagram

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