AMLDL-3070Z Aimtec Inc., AMLDL-3070Z Datasheet - Page 6

• Manufacturer Part Number: AMLDL-3070Z
• Manufacturer: Aimtec Inc.

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.
Model Number
AMLDL-3030Z
AMLDL-3035Z
AMLDL-3050Z
AMLDL-3060Z
AMLDL-3070Z
AMLDL-30100Z
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.
Model Number
AMLDL-3030Z
AMLDL-3035Z
AMLDL-3050Z
AMLDL-3060Z
AMLDL-3070Z
AMLDL-30100Z
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.
www.aimtec.com
F 051e R9.E
Iout ˜
The output current is given by:
The output current is given by:
Iout ˜
0.1 x DPWM
(0.08 / X) x Radj
(Radj + 200K)
1.25V
0V
X
0.327
0.280
0.197
0.165
0.1388
0.095
0.327
0.280
0.197
0.165
0.1388
0.095
PWM
GND
X
X
[for 0<DPWM<1]
1
VADJ
10K
CADJ
-Vin
1.25V
AMLDL-Z
0V
Tel: [phone]
RADJ
PWM
GND
6 of 15
VADJ
+Vout
-Vout
VADJ
1
1
-Vin
Last LED
1
AMLDL-Z
st
LED
-Vin
AMLDL-Z
Up to 1000mA | LED Driver
Series AMLDL-Z
-Vout
+Vout
+Vout
-Vout
Toll free: + 1 888 9 AIMTEC
1
1
1
Last LED
st
1
1
1
LED
st
LED
North America only
(924 6832)