LP3302 Datasheet, PDF (4/13 Pages) Lowpower Semiconductor inc – 1.1MHz Fixed-Frequency PWM Operation

Preliminary Datasheet
LP3302
Functional pin description
SOT-23-6
1
2
3
4
5
6
Pin Name Pin Function
Switch Pin. Connect this Pin to inductor and catch diode. Minimize the track
LX
area to reduce EMI.
GND Ground Pin
Feedback Reference Voltage Pin. Series connect a resistor between WLED
FB
and ground as a current sense. Sense the current feedback voltage to set the
current rating.
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
EN
a pull low 100kΩ resistor connected to GND when the control signal is
floating.
OUT
OVP Pin. Overvoltage Sense. When VOUT is greater than 29V, the internal
N-channel MOSFET turns off until VOUT drops below 29V, then the IC
reenters start. Connect a 1uF capacitor from OUT to GND.
Supply Input Voltage Pin. Bypass 1uF capacitor to GND to reduce the input
VIN
noise.
LP3302B6F-00 Version 1.0 Datasheet May.-2013 www.lowpowersemi.com
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