FPF2700 AccuPower™ Advanced Load Management Products
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January 2011 © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FPF2700 / FPF2701 / FPF2702 • Rev. 1.0.2 FPF2700 / FPF2701 / FPF2702 — AccuPower™ 0.4~2A Adjustable Over-Current Protection Load Switches FPF2700 / FPF2701 / FPF2702 — AccuPower™ 0.4~2A Adjustable Over-Current Protection Load Switches Features „X 2.8V to 36V Input Voltage Range „X Typical RDS(ON)=88mƒÇ „X 0.4A to 2A Adjustable Current Limit (Min.) „X Slew Rate Controlled „X ESD Protected, above 2000V HBM „X Thermal Shutdown „X Active LOW Enable „X UVLO Protection „X Power-Good Output Applications „X Motor Drives „X Digital Cameras „X Consumer Electronics „X Industrial „X Computing „X Hard Disk Drives „X Telecom Equipment Figure 1. MLP (Top View) Figure 2. MLP (Bottom View) Figure 3. SO8 (Top View) Description The AccuPower™ FPF270X series is a family of current-limit load switches that provide full protection to systems and loads from excess current conditions. Minimum current limit is adjustable from 0.4A to 2.0A. The FPF270X contains a slew-rate-controlled N-channel MOSFET and slew-rated turn-on to prevent power bus disturbances from being caused by “hot plugging” loads or momentary excess load demands. The input voltage range is 2.8V to 36V. Loads can be activated or deactivated with a low-voltage logic-compatible ON pin. Fault conditions can be monitored using the error flag pin and/or the power-good pin. Each member of the FPF270X family serves a category of load-fault response. All devices clamp the load current so that it cannot exceed an externally programmed current level. An over temperature feature provides further device protection in case of excessive levels of power dissipation. FPF2700 responds to an overload condition that lasts longer than a fixed blanking period by turning off the load, followed by a retry after the auto-restart time. FPF2701 responds to an overload condition that lasts longer than a fixed blanking period by latching off the load. The load remains off unless either the ON pin is toggled or the input voltage cycles through UVLO. FPF2702 is intended to be used with external fault management. Like the FPF2700 and FPF2701, it sets the fault signal pin LOW when it activates current clamping. This device is intended for applications where external fault management coordinates the overload response with the FPF2702. The FPF270X is available in a space-saving Pb and Halogen free, 8-lead MLP 3x3mm and SO8 packages. Ordering Information Part Number Current Limit [A] Current Limit Blanking Time [ms] Auto-Restart Time [ms] ON Pin Activity Package FPF2700MPX 0.4 – 2.0 0.5 127.5 Active LOW MLP3X3 FPF2701MPX 0.4 – 2.0 0.5 NA Active LOW MLP3X3 FPF2702MPX 0.4 – 2.0 NA NA Active LOW MLP3X3 FPF2700MX 0.4 – 2.0 0.5 127.5 Active LOW SO8 FPF2701MX 0.4 – 2.0 0.5 NA Active LOW SO8 FPF2702MX 0.4 – 2.0 NA NA Active LOW SO8

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FPF2700 / FPF2701 / FPF2702 • Rev. 1.0.2 2 FPF2700 / FPF2701 / FPF2702 — AccuPower™ 0.4~2A Adjustable Over-Current Protection Load Switches Application Diagram Figure 4. Typical Application Block Diagram Figure 5. Block Diagram OFF ON VIN ON ISET VOUT FLAGB PGOOD GND VIN 2.8V – 36V TO LOAD RSET CIN 36V MAX. COUT

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FPF2700 / FPF2701 / FPF2702 • Rev. 1.0.2 3 FPF2700 / FPF2701 / FPF2702 — AccuPower™ 0.4~2A Adjustable Over-Current Protection Load Switches Pin Configurations Figure 6. MLP (Bottom View) Figure 7. SO8 (Top View) Pin Definitions Pin # Name Description 1 VIN Supply Input. Input to the power switch and the supply voltage for the IC. 2 PGOOD Power-Good Output. Open-drain output to indicate that output voltage has reached 90% of input voltage. 3 ISET Current Limit Set Input. A resistor from ISET to ground sets the current limit for...

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FPF2700 / FPF2701 / FPF2702 • Rev. 1.0.2 4 FPF2700 / FPF2701 / FPF2702 — AccuPower™ 0.4~2A Adjustable Over-Current Protection Load Switches Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are...

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FPF2700 / FPF2701 / FPF2702 • Rev. 1.0.2 5 FPF2700 / FPF2701 / FPF2702 — AccuPower™ 0.4~2A Adjustable Over-Current Protection Load Switches Electrical Characteristics VIN=2.8 to 36V and TA=-40 to +85°C unless otherwise noted. Typical values are at VIN=12V and TA=25°C. Symbol Parameter Conditions Min. Typ. Max. Unit Basic Operation VIN Operating Voltage 2.8 36.0 V IQ Quiescent Current VIN=12V, VON=0V, IOUT=0A 92 140 ìA ISHDN Shutdown Current VIN=36V, VON=3.3V, IOUT=0A 5 14 ìA RON On-Resistance TA=25°C, VIN=12V 88 114 mÙ TA=-40...

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FPF2700 / FPF2701 / FPF2702 • Rev. 1.0.2 6 FPF2700 / FPF2701 / FPF2702 — AccuPower™ 0.4~2A Adjustable Over-Current Protection Load Switches Timing Diagram Figure 12. Timing Diagram Typical Performance Characteristics VIN = 12V and TA = 25°C. 1.20 1.23 1.25 1.28 1.30 1.33 1.35 1.38 1.40 0 5 10 15 20 25 30 35 40 On Threshold Voltage (V) Supply Voltage (V) VIH VIL TA = 25°C 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 ]50 ]25 0 25 50 75 100 125 150 On Threshold Voltage (V) TJ, Junction Temperature (oC) VIH VIL VIN= 12V...

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FPF2700 / FPF2701 / FPF2702 • Rev. 1.0.2 7 FPF2700 / FPF2701 / FPF2702 — AccuPower™ 0.4~2A Adjustable Over-Current Protection Load Switches Typical Performance Characteristics VIN = 12V and TA = 25°C. Figure 17. On Resistance vs. Supply Voltage Figure 18. On Resistance vs. Junction Temperature 1.0 1.5 2.0 2.5 3.0 3.5 4.0 ]50 ]25 0 25 50 75 100 125 150 Turn]On Delay (ms) TJ, Junction Temperature (oC) VIN = 12V RL = 500ƒÇ CL = 2ìF Figure 19. Turn-On Delay vs. Junction Temperature Figure 20. Output Rise Time vs. Junction...