FPF2124 Protected Power Switches by ON Semiconductor

Full Function Load Switch with Adjustable Current Limit


The FPF2123, FPF2124, and FPF2125 are a series of load switches which provides full protection to systems and loads which may encounter large current conditions. These devices contain a 0.125Ω current-limited P-channel MOSFET which can operate over an input voltage range of 1.8-5.5V. The current limit is settable using an external resistor. Internally, current is prevented from flowing 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 parts operate in a constant-current mode to prohibit excessive currents from causing damage. For the FPF2123 and FPF2124 if the constant current condition still persists after 10ms, these parts will shut off the switch. The FPF2123 has an auto-restart feature which will turn the switch on again after 160ms if the ON pin is still active. The FPF2124 does not have this auto-restart feature so the switch will remain off after a current limit fault until the ON pin is cycled. The FPF2125 will not turn off after a current limit fault, but will rather remain in the constant current mode indefinitely. The minimum current limit is 150mA. These parts are available in a space-saving 5 pin SOT23 package

Where to Buy

Prices starting from US$0.94

Distributor Stock
Logo for Farnell
Farnell
from US$0.94
No stock
Buy Now
Logo for element14
element14
from US$1.25
-
Buy Now
Logo for Newark Electronics
Newark Electronics
-
-
Buy Now

Features

1.8 to 5.5V Input Voltage Range
Controlled Turn-On
0.15-1.5A Adjustable Current Limit
Undervoltage Lockout
Thermal Shutdown
<2uA Shutdown Current
Auto Restart
Fast Current limit Response Time
3us to Moderate Over Currents
20ns to Hard Shorts
Fault Blanking
Reverse Current Blocking
Applications
Media Tablets
Mobile Handsets
PMP/MP3 Players
End Products
Storage & Peripherals
Wireless LAN Card & Broadband Access

Specifications

Description FPF2124
Compliance Pb-free Halide free
Over Current - Shutdown (Y/N) Y
Over Current - Current Source (Y/N) N
Over Voltage Protection (Y/N) N
Reverse Current Blocking (Y/N) Y
FAULT Signal (Y/N) N
PGOOD (Y/N) N
UVLO (Y/N) Y
Rds(on) Typ (mΩ) 125
Max Current (A) 1.5
Output Discharge (Y/N) N
IMON Output (Y/N) N
Adjustable Slew Rate (Y/N) N
Vin Min (V) 1.8
Vin Max (V) 5.5
Iq (µA) 75
eFuse / Hot Plug (Y/N) N
Input / Output 1:1
Product Family IntelliMAX
Package Type SOT-23-5

Alternative Descriptions

MOSFET, SMART SWITCH SOT-23-5, SMD | element14
Mosfet, Smart Switch Sot-23-5, Smd | Newark Electronics


Frequently Asked Questions

Where can I find additional details, specifications and documents for a FPF2124?

Additional datasheets, footprints and schematics for FPF2124 are listed on our Part Details page. You can also find images and similar parts to FPF2124 on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for FPF2124 on our Product Comparison page. Access via the 'View Pricing & Stock' button to view FPF2124 price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does FPF2124 fall under?

The FPF2124 is listed under Power Management > Protected Power Switches.

Can I view similar or alternative parts?

You can view similar parts to FPF2124 when available in the Protected Power Switches range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the FPF2124 you can contact the distributor directly for product support, shipping queries etc.

Is the FPF2124 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for FPF2124 have stock available?

Authorised distributors including element14, Farnell and Newark Electronics have stock available or on a lead time for FPF2124.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for FPF2124 often in real-time on the comparison pages.

What if I can't find stock of FPF2124?

You can fill out our help required form which you can use to request a quote for FPF2124 from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay