AL8806
Pin Descriptions
Pin
Name
Pin Number
MSOP-8EP
Function
SW
GND
5, 6 Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin to reduce EMI.
2, 3 GND Pin
Dimming and On/Off Control Input.
? Leave floating for normal operation.
(V CTRL = V REF = 2.5V giving nominal average output current I OUTnom = 0.1/R S )
CTRL
SET
V IN
EP
N/C
4
1
8
EP
7
? Drive to voltage below 0.4V to turn off output current
? Drive with DC voltage (0.5V < V CTRL < 2.5V) to adjust output current from 20% to 100% of I OUTnom
? A PWM signal (low level ≤ 0.4V and high level > 2.6; transition times less than 1us) allows the output current to be
adjusted below the level set by the resistor connected to SET input pin.
Set Nominal Output Current Pin. Configure the output current of the device.
Input Supply Pin. Must be locally decoupled to GND with > 2.2μF X7R ceramic capacitor – see applications section for
more information.
Exposed pad:
Connect to GND and thermal mass for enhanced thermal impedance. It should not be used as electrical ground
conduction path.
no connection
Functional Block Diagram
AL8806
Document number: DS35144 Rev. 5 - 2
2 of 15
www.diodes.com
July 2013
? Diodes Incorporated
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相关代理商/技术参数
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