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Numéro de référence | FPF2172 | ||
Description | Advanced Load Management Products | ||
Fabricant | Fairchild Semiconductor | ||
Logo | |||
1 Page
www.DataSheet4U.com
APRIL 2006
FPF2172
IntelliMAX™ Advanced Load Management Products
tm
Features
1.8 to 5.5V Input Voltage Range
Controlled Turn-On
200mA Current Limit Option
Undervoltage Lockout
Thermal Shutdown
<1µA Shutdown Current
Fast Current limit Response Time
3µs to Moderate Over Currents
20ns to Hard Shorts
Integrated very low VF Schottky Diode for
Reverse Current Blocking
Applications
PDAs
Cell Phones
GPS Devices
MP3 Players
Digital Cameras
Peripheral Ports
Hot Swap Supplies
General Description
The FPF2172 is a load switch which combines the functionality
of the IntelliMAXTM series load switch with a very low forward
voltage drop Schottky barrier rectifier. The integrated solution
provides full protection to systems and loads which may
encounter large current conditions in a very compact MLP 3x3
package. This device contain a 0.125Ω current-limited
P-channel MOSFET which can operate over an input voltage
range of 1.8-5.5V. The Schottky diode acts as a barrier so that
no reverse current can flow when the MOSFET is off and the
output voltage is higher than the input voltage. Switch control is
by a logic input (ON) capable of interfacing directly with low
voltage control signals. Each part contains thermal shutdown
protection which shuts off the switch to prevent damage to the
part when a continuous over-current condition causes
excessive heating.
When the switch current reaches the current limit, the part
operates in a constant-current mode to prohibit excessive
currents from causing damage. If the constant current condition
still persists after 10ms, these parts will shut off the switch and
pull the fault signal pin (FLAGB) low. The switch will remain off
until the ON pin is cycled. The minimum current limit is 200mA.
These parts are available in a space-saving 6L MLP 3x3
package.
Typical Application Circuit
OFF ON
VIN VOUT
FPF2172
ON FLAGB
GND
TO LOAD
©2006 Fairchild Semiconductor Corporation
FPF2172 Rev. E
1
www.fairchildsemi.com
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Pages | Pages 11 | ||
Télécharger | [ FPF2172 ] |
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