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AP8800
Pin Descriptions
Pin Name
SO-8
Pin Number
MSOP-8 U-DFN3030-10
Function
SW
GND
SET
3
4
8
3
4
8
4
5
10
Switch Pin. Connect inductor/freewheeling diode here. Minimize trace area at this pin to
reduce EMI.
GND Pin
Set Nominal Output Current Pin. To configure the output current of the device.
Dual function dimming control pin.
?
Input voltage of 0.2V or lower forces the device into low current standby mode and
shuts off the output.
CTRL
1
1
1
?
A PWM signal (driven by an open-drain/collector source) allows the output current
to be adjusted over a wide range up to 100%.
?
An analog voltage between 0.3V and 2.5V adjusts the output current between 25%
and 200% of the current set by 0.2V/R S .
The input impedance is about 200k ? , and if the pin is left open V CTRL = V REF
V IN
RSVD
NC
5
2
6, 7
5
2
6, 7
6
2
2, 7, 8, 9
Input Supply Pin. Must be locally bypassed.
Reserved. Normally connected to Ground
No Connection.
Functional Block Diagram
Absolute Maximum Ratings (@T A = +25°C, unless otherwise specified.)
Symbol
V IN
V SET
VSW
V CTRL
T J
T LEAD
T ST
Parameter
VIN Pin Voltage
Set Voltage Relative to V IN
SW Voltage
CTRL Pin Input Voltage
Maximum Junction Temperature
Maximum Lead Temperature
Storage Temperature Range
Rating
-0.3 to +30
V IN -5 to V IN +0.3
-0.3 to +30
-0.3 to +5
125
300
-55 to +125
Unit
V
V
V
V
°C
°C
°C
Caution:
Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events.
Suitable ESD precautions should be taken when handling and transporting these devices.
AP8800
Document number: DS31764 Rev. 7 - 2
2 of 13
www.diodes.com
August 2012
? Diodes Incorporated
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