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| FP0100_10 Datasheet, PDF (1/6 Pages) Supertex, Inc – Fault Protection Switch with Current Fold-back | |||
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Supertex inc.
FP0100
Fault Protection Switch
with Current Fold-back
Features
âºâº Up to 100V input voltage protection
âºâº Low on resistance â 4.0Ω typical
âºâº Fast switching speed
âºâº No external supplies needed
Applications
âºâº Power supplies
âºâº Fast resettable fuse
âºâº High side switches
âºâº Data acquisition
General Description
The Supertex FP0100 is a high voltage fault protection switch
with current fold-back. It is designed to protect system output
power supplies against over-current or short circuit conditions.
In protection mode, the FP0100 limits the current to 300µA.
The FP0100 can be considered as a normally closed switch
with a typical switch resistance of 4.0Ω. The peak current
allowed to pass through the switch can be set by an external
resistor across VOUT and RSEN. Once the voltage drop
across VIN and VOUT exceeds a nominal value of 3.0V,
the input current will fold-back to 300µA. In the off state, the
FP0100 can withstand up to 100V. Higher input voltages
can be accommodated by using an external depletion-mode
MOSFET. Please refer to Figure 4 for more details. The
FP0100 is available in a SOT-89 package.
Typical Application Circuit
+
VIN
-
VIN
RSEN
FP0100
VOUT
RSEN
LOAD
Doc.# DSFP-FP0100
C070113
Supertex inc.
www.supertex.com
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