Fairchild Semiconductor FPF2500-FPF2506 IntelliMAX™ Advanced Load Management Products Data Manual

2500-F 2506 In telli M van ced ad an ag em en t P ro cts

September 2006

FPF2500-FPF2506

Intelli MAX™ Advanced Load Management Products Features General Description 4.5 to 20V Input Voltage Range The FPF2500 through FPF2506 is a family of load switches

which provide full protection to systems and loads which may

Controlled Turn-On

encounter large current conditions. These devices contain a

0.4A, 0.8A and Adjustable Current Limit Option

0.23Ω current-limited N-channel MOSFET which can operate

Undervoltage Lockout

over an input voltage range of 4.5-20V. Switch control is by a

Thermal Shutdown logic input (ON) capable of interfacing directly with low voltage

<10u A Shutdown Current control signals. Each part contains thermal shutdown protection which shuts off the switch to prevent damage to the part when a

Auto Restart

continuous over-current condition causes excessive heating.

Fault Blanking

When the switch current reaches the current limit, the part Applications operates in a constant-current mode to prohibit excessive currents from causing damage. For the FPF2500, FPF2501,

FPF2503 and FPF2505, if the constant current condition still

Motor Drivers

persists after 5ms, these parts will shut off the switch and, for Cell Phones the FPF2503 and FPF2505, the fault signal pin (FLAGB) will be pulled low. The FPF2500, FPF2503, and FPF2505, have an

Digital Cameras

auto-restart feature which will turn the switch on again after 640ms if the ON pin is still active. The FPF2501 does not have this auto-restart feature so the switch will remain off until the ON pin is cycled. For the FPF2502, FPF2504 and FPF2506, a current limit condition will immediately pull the fault signal pin low and the part will remain in the constant-current mode until the switch current falls below the current limit. For the FPF2500 through FPF2502, the minimum current limit is adjustable from 500m A to 2A. For the FPF2503 and FPF2504 the minimum current is internally fixed at 400m A while that for the FPF2505 and FPF2506 is internally fixed at 800m A.

These parts are available in a space-saving 5 pin SOT23 package.

Ordering Information

Current Limit Auto-Restart Blanking Time Time

Part Current Limit [A] [ms] [ms] Fault Pin FPF2500 Adjustable (0.5-2.0 +/-30%) 2.5/5/10 320/640/1280 No FPF2501 Adjustable (0.5-2.0 +/-30%) 2.5/5/10 NA No FPF2502 Adjustable (0.5-2.0 +/-30%) NA No FPF2503 0.4/0.6/0.8 2.5/5/10 320/640/1280 Yes FPF2504 0.4/0.6/0.8 NA Yes FPF2505 0.8/1.2/1.6 2.5/5/10 320/640/1280 Yes FPF2506 0.8/1.2/1.6 NA Yes

©2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FPF2500-FPF2506 Rev. D1