LTM8033
19
8033fb
For more information www.linear.com/LTM8033
refer to the PCB Layout section for printed circuit board
design suggestions.
The LTM8033 is equipped with a thermal shutdown that
will inhibit power switching at high junction temperatures.
The activation threshold of this function, however, is above
125°C to avoid interfering with normal operation. Thus,
it follows that prolonged or repetitive operation under a
condition in which the thermal shutdown activates neces
-
sarily means that the internal components are subjected
APPLICATIONS INFORMATION
to temperatures above the 125°C rating for prolonged
or repetitive intervals, which may damage or impair the
reliability of the device.
Finally, be aware that at high ambient temperatures the
internal Schottky diode will have significant leakage cur
-
rent (see the Typical Performance Characteristics section)
increasing the quiescent current of the L
TM8033.
TYPICAL APPLICATIONS
8033 TA02
V
IN
BIAS
RUN/SS
FIN
SHARE
V
IN
3.6V TO 15V
V
OUT
0.8V
3A
V
OUT
AUX
PGOOD
RT
LTM8033
4.7µF
SYNC GND ADJ
10µF
182k 30M
f = 230kHz
400µF
8033 TA03
V
IN
BIAS
RUN/SS
FIN
SHARE
V
IN
3.6V TO 36V
V
OUT
1.8V
3A
V
OUT
AUX
PGOOD
RT
LTM8033
4.7µF
2.8V TO 25V
SYNC GND ADJ
10µF
NOTE: DO NOT ALLOW V
IN
+ BIAS TO BE GREATER THAN 56V.
f = 285kHz
147k 383k
400µF
0.8V Step-Down Converter
1.8V Step-Down Converter
