DS4560
12V Hot-Plug Switch
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Latchoff Version (DS4560S-LO)
Once the latchoff version has entered thermal shut-
down, it does not attempt to turn back on. The only way
to turn this device back on is to cycle the power to the
device. When power is reapplied to V
CC
, the junction
temperature needs to be less than T
SHDN
for the
device to be enabled.
Overvoltage Limit
The overvoltage-limiting clamp monitors the VRAMP
level compared to an internal voltage reference. When
the voltage on VRAMP exceeds V
OVC
/2, the gate volt-
age of the n-channel power MOSFET is reduced, limit-
ing the voltage on LOAD to V
OVC
even as V
CC
increases. If the device is in overvoltage for an extend-
ed period of time, the device may overheat and enter
thermal shutdown. This is caused by the power created
by the voltage drop across the power MOSFET and the
load current. See the Thermal Shutdown with Autoretry
graph for details.
Applications Information
The GND pin of the DS4560 is also a heat sink for the
device. This pin should be connected to a large trace
or plane capable of dissipating heat from the device.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
8 SO —
21-0041
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages
.
