AMLDL-3050Z 데이터 시트보기 (PDF) - AIMTEC

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AMLDL-3050Z

Up to 1000mA | LED Driver

AIMTEC 

Series AMLDL-Z

Up to 1000mA | LED Driver

Resistive Dimming Control

A simplified dimming control can be achieved using a variable resistor connected between VADJ and GND. Capacitor CADJ

is optional, it is installed to limit AC mains interference and high frequency noise. The recommended value of CADJ is

0.22µF.

The output current is given by:

Iout ˜

(0.08 / X) x Radj

(Radj + 200K)

Model Number

AMLDL-3030Z

AMLDL-3035Z

AMLDL-3050Z

AMLDL-3060Z

AMLDL-3070Z

AMLDL-30100Z

X

0.327

0.280

0.197

0.165

0.1388

0.095

CADJ

RADJ

VADJ

AMLDL-Z

-Vin

+Vout

1st LED

1

-Vout

1

Output Current Adjustment by PWM Control:

Driving VADJ Directly

A Pulse Width Modulated (PWM) signal with a duty cycle of DPWM can be applied directly to VADJ pin as shown below.

The output current is given by:

Iout ˜ 0.1 x DPWM [for 0<DPWM<1]

X

PWM VADJ

1.25V

Model Number

AMLDL-3030Z

AMLDL-3035Z

AMLDL-3050Z

AMLDL-3060Z

AMLDL-3070Z

AMLDL-30100Z

X

0.327

0.280

0.197

0.165

0.1388

0.095

0V

GND

AMLDL-Z

-Vin

+Vout

1st LED

1

-Vout

Last LED

1

Driving VADJ Via Open Collector Transistor

The VADJ can also be driven via an open collector transistor as shown below.

The diode and resistor serve to suppress any possible high amplitude negative voltage spikes to the VADJ input resulting

from the collector to emitter capacitance of the transistor. Any negative voltage spikes will cause errors in output current

and/or unstable driver operation.

+Vout

PWM

1.25V

0V

VADJ

10K

AMLDL-Z

-Vin

-Vout

1st LED

1

Last LED

1

1

GND

www.aimtec.com

F 051e R9.E

Tel: +1 514 620 2722

6 of 15

Toll free: + 1 888 9 AIMTEC

(924 6832)

North America only

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