AMLDL-3070Z Aimtec Inc., AMLDL-3070Z Datasheet - Page 5

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

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.
Driving the VADJ from a Microcontroller
The VADJ can be driven from an open drain output of a microcontroller as shown below. The diode and resistor serve to
suppress any possible high amplitude negative voltage spikes to the VADJ input resulting from the drain to source
capacitance of the FET. Any negative voltage spikes will cause errors in output current and/or unstable driver operation.
www.aimtec.com
F 051e R9.G
The output current is given by:
Iout ˜
0.1 x DPWM
X
0.327
0.280
0.197
0.165
0.1388
0.095
X
[for 0<DPWM<1]
1.25V
0V
PWM
GND
1.25V
MCU
0V
Tel: [phone]
PWM
GND
5 of 14
1
VADJ
1
10K
VADJ
VADJ
10K
-Vin
-Vin
AMLDL-Z
-Vin
AMLDL-Z
AMLDL-Z
GND
Up to 1000mA | LED Driver
Series AMLDL-Z
-Vout
+Vout
+Vout
+Vout
-Vout
-Vout
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(924 6832)