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LTM8033
APPLICATIONS INFORMATION
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
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 LTM8033.
TYPICAL APPLICATIONS
0.8V Step-Down Converter
V IN
3.6V TO 15V
4.7μF
V IN
BIAS
LTM8033
V OUT
AUX
V OUT
0.8V
400μF 3A
RUN/SS
FIN
PGOOD
10μF
SHARE
RT SYNC GND ADJ
8033 TA02
182k
30M
f = 230kHz
1.8V Step-Down Converter
V IN
3.6V TO 36V
4.7μF
2.8V TO 25V
V IN
BIAS
LTM8033
V OUT
AUX
V OUT
1.8V
400μF 3A
RUN/SS
FIN
PGOOD
10μF
SHARE
RT SYNC GND ADJ
8033 TA03
147k
383k
f = 285kHz
NOTE: DO NOT ALLOW V IN + BIAS TO BE GREATER THAN 56V.
8033fa
For more information www.linear.com/LTM8033
19
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