Datasheet

4A 180KHz 36V Buck DC to DC Converter

XL4013

Rev 1.3

www.xlsemi.com

8

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.

XL4013

CIN

100uF/50V

COUT

220uF/25V

R2

10K

R1

3.3K

L1 47uH/5A

D1

B540

C1

105

C2

105

5

3

1

2

VIN

4

VOUT=1.25*(1+R2/R1)

VIN

VC

SW

GND

FB

CC

105

R3

10K

D2

1N4148

OFF(High>3.3V)

ON(Low<0.8V)

TTL current capability larger than

TTL high voltage/(R1+R3)