Datasheet
XL4013
4A 180KHz 36V Buck DC to DC Converter
Typical System Application (TTL shutdown function)
Logic level signals shutdown function can be used in typical system application with external
components. When the TTL high voltage above 3.3V(referenced to ground, lower than VIN), the
converter will shutdown, input current less than 5mA; when the TTL Low voltage below
0.8V(referenced to ground), the converter will turn on.
L1 47uH/5A
VOUT=1.25*(1+R2/R1)
VIN
SW
5
3
D1
B540
R2
10K
XL4013
CC
105
C2
105
COUT
220uF/25V
R3
10K
VC
FB
4
2
VIN
1
GND
CIN C1
100uF/50V 105
D2
1N4148
R1
3.3K
OFF(High>3.3V)
ON(Low<0.8V)
TTL current capability larger than
TTL high voltage/(R1+R3)
Figure9. XL4013 Typical Application Circuit
Rev 1.3
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