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LP3382 Datasheet(PDF) 2 Page - Lowpower Semiconductor inc

Part # LP3382
Description  1.2MHzFixed-Frequency PWM Operation
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Manufacturer  POWER [Lowpower Semiconductor inc]
Direct Link  http://www.lowpowersemi.com
Logo POWER - Lowpower Semiconductor inc

LP3382 Datasheet(HTML) 2 Page - Lowpower Semiconductor inc

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Preliminary Datasheet
LP3382
LP3382 – 01 Version 1.0 Datasheet
OCT.-2011
www.lowpowersemi.com
Page 2 of 9
Functional pin description
SOT-23-6
Pin Name
Pin Function
1
SW
Switch Pin. Connect this Pin to inductor and catch diode. Minimize the track
area to reduce EMI.
2
GND
Ground Pin
3
FB
Feedback Reference Voltage Pin. Series connect a resistor between WLED
and ground as a current sense. Sense the current feedback voltage to set the
current rating.
4
EN
Chip Enable (Active High). Voltage sensing input to trigger the function of
over voltage protection. Note that this pin is high impedance. There should
be a pull low 100kΩ resistor connected to GND when the control signal is
floating.
5
OVP
Over voltage pin.
6
Vin
Supply Input Voltage Pin. Bypass 1uF capacitor to GND to reduce the input
noise.
Function Block Diagram


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