Datasheet

8A 180KHz 40V Buck DC to DC Converter

XL4016

Rev 1.2

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.

XL4016

CIN

470uF/50V

COUT

1000uF/25V

R2

10K

R1

3.3K

L1 47uH/12A

D1

MBR1545

C1

105

C2

105

5

3

1

2

VIN

4

VOUT=1.25*(1+R2/R1)

IOUT=0~8A

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)