FPF2500_07 FAIRCHILD [Fairchild Semiconductor], FPF2500_07 Datasheet

FPF2500_07

Manufacturer Part Number

FPF2500_07

Description

Manufacturer

FAIRCHILD [Fairchild Semiconductor]

Datasheet

1.FPF2500_07.pdf (13 pages)

Current page: 1 of 13
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FPF2500-FPF2506 Rev. D4

FPF2500-FPF2506

IntelliMAX™ Advanced Load Management Products

Features

Applications

Ordering Information

4.5 to 20V Input Voltage Range

Controlled Turn-On

0.4A, 0.8A and Adjustable Current Limit Option

Undervoltage Lockout

Thermal Shutdown

<10uA Shutdown Current

Auto Restart

Fault Blanking

PDAs

Motor Drivers

Cell Phones

Digital Cameras

RoHS Compliant

FPF2500

FPF2501

FPF2502

FPF2503

FPF2504

FPF2505

FPF2506

Part

Adjustable (0.5-2.0 +/-30%)

Current Limit [A]

0.4/0.6/0.8

0.8/1.2/1.6

Blanking Time

Current Limit

General Description

The FPF2500 through FPF2506 is a family of load switches

which provide full protection to systems and loads which may

encounter large current conditions. These devices contain a

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

over an input voltage range of 4.5-20V. 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. For the FPF2500, FPF2501,

FPF2503 and FPF2505, if the constant current condition still

persists after 5ms, these parts will shut off the switch and, for

the FPF2503 and FPF2505, the fault signal pin (FLAGB) will be

pulled low. The FPF2500, FPF2503, and FPF2505, have an

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

500mA to 2A. For the FPF2503 and FPF2504 the minimum

current is internally fixed at 400mA while that for the FPF2505

and FPF2506 is internally fixed at 800mA.

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

package.

2.5/5/10

[ms]

Auto-Restart

320/640/1280

Time

[ms]

Fault Pin

February 2007

www.fairchildsemi.com

Yes

Related parts for FPF2500_07

FPF2500_07 Summary of contents

Page 1

FPF2500-FPF2506 IntelliMAX™ Advanced Load Management Products Features 4.5 to 20V Input Voltage Range Controlled Turn-On 0.4A, 0.8A and Adjustable Current Limit Option Undervoltage Lockout Thermal Shutdown <10uA Shutdown Current Auto Restart Fault Blanking Applications PDAs Motor Drivers Cell Phones Digital ...

Page 2

Typical Application Circuit - Functional Block Diagram V IN UVLO ON THERMAL SHUTDOWN V IN UVLO ON THERMAL SHUTDOWN FPF2500-FPF2506 Rev OUT IN FPF2500-FPF2502 ISET OFF ON ON GND 5.5V max OUT FPF2503- FPF2506 ...

Page 3

Pin Configuration Pin Description Pin Name V 1 OUT GND 2 FLAGB 3 ISET Absolute Maximum Ratings Parameter GND IN OUT ON, FLAGB, ISET to GND Power Dissipation @ T ...

Page 4

Electrical Characteristics Cont 4.5 to 20V -40 to +85°C unless otherwise noted. Typical values are Parameter ON Input Logic High Voltage ON Input Logic Low Voltage ON Input Leakage Off Switch Leakage ...

Page 5

Typical Characteristics SUPPLY VOLTAGE (V) Figure 1. Quiescent Current vs. Input Voltage 8.0 I_SHDN 7 20V 7.0 IN 6.5 6.0 5.5 5.0 ...

Page 6

Typical Characteristics 1400 R = 20kΩ SET 1200 1000 FPF2500, 2501, 2502 800 600 400 200 Figure 7. Current Limit vs. Output Voltage 1400 FPF2500, 2501, 2502 1300 ...

Page 7

Typical Characteristics -40 - JUNCTION TEMPERATURE ( J Figure 13. T vs. Temperature BLANK V = 12V V IN DRV (Note 2) 5V/DIV V OUT 10V/DIV I OUT 1A/DIV FLAGB 5V/DIV 5ms/DIV ...

Page 8

Typical Characteristics V IN 10V/DIV I OUT 10A/DIV C =1uF, C =10uF V OUT IN OUT 10V/DIV V =5V ON 20us/DIV Figure 19. Short Circuit Response (Output is shorted to GND) Note 2: V signal forces the device to go ...

Page 9

Description of Operation The FPF2500 - FPF2506 are current limited switches that protect systems and loads which can be damaged or disrupted by the application of high currents. The core of each device is a 0.23Ω N-channel MOSFET and a ...

Page 10

Application Information Typical Application OFF ON Battery 12V C1=10uF OFF ON Battery - 12V C1=10uF Setting Current Limit The FPF2500, FPF2501, and FPF2502 have a current limit which is set with an external resistor connected between I and GND. This ...

Page 11

Output Capacitor A 0.1uF capacitor C should be placed between V OUT, GND. This capacitor will prevent parasitic board inductances from forcing V below GND when the switch turns-off. For the OUT FPF2501, FPF2503 and FPF2505, the total output capacitance ...

Page 12

Dimensional Outline and Pad Layout FPF2500-FPF2506 Rev www.fairchildsemi.com ...

Page 13

TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks. ® ACEx Across the board. Around the world.™ ActiveArray™ Bottomless™ Build ...

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