AMC7150 Datasheet, PDF (3/12 Pages) ADDtek Corp – 1.5A Power LED Driver

AMC7150
1.3. Description:
【1】 DC-IN: DC power jack. It is designed to provide convenience for demo. Simply one adapter is
needed for supplying the EVM board to light up the Power LEDs.
【2】 D1: Reverse protection diode. It is located between input port of the EVM, V_IN, and Vcc pin of
the IC. The function is to provide protection when input source is reverse connected.
【3】 J1: Lighting mode selection connector. Four lighting modes of the 2 LEDs can be
accomplished through jumper. The 2 LEDs can be connected in series or parallel, or either
of the 2 LEDs can be selected. The method of selecting one of these modes is shown in
the following table.
Table Method of using jumper to select 1 of the 4 lighting modes for the 2 LEDs.
Mode
1
Lighting condition of LED1 and LED2
LED1&LED2 connected in serial
J1
1234
2
LED1&LED2 connected in parallel
12 34
3
LED1
1234
4
LED2
1234
【4】 J2: Test point. It is reserved for current measurement to make sure that the LED driving
current matches the value calculated by the formula below (Please refer to the datasheet
for the calculated method of the average current):
I _PK
=
330mV ±10%
R_sense
1.4. Reference PCB Layout:
Top Layer
Bottom Layer
Large PCB area is reserved for GND plane and is connected to the heat pad of AMC7150.
The GND plane can be a part of heat sink for AMC7150.
Copyright © 2006, ADDtek Corp.
DA011 － September 1, 2006
http://www.addmtek.com
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