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FPF2108 Dataheets PDF



Part Number FPF2108
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description (FPF2108 - FPF2110) IntelliMAX Advanced Load Management Products
Datasheet FPF2108 DatasheetFPF2108 Datasheet (PDF)

www.DataSheet4U.com FPF2108-FPF2110 IntelliMAX™ Advanced Load Management Products May 2005 FPF2108-FPF2110 IntelliMAX™ Advanced Load Management Products Features 1.8 to 5.5V Input Voltage Range Controlled Turn-On 200mA and 400mA Current Limit Options Undervoltage Lockout Thermal Shutdown <2uA Shutdown Current Fast Current limit Response Time 3us to Moderate Over Currents 20ns to Hard Shorts Reverse Current Blocking Fault Blanking General Description The FPF2108-FPF2110 is a series of load sw.

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www.DataSheet4U.com FPF2108-FPF2110 IntelliMAX™ Advanced Load Management Products May 2005 FPF2108-FPF2110 IntelliMAX™ Advanced Load Management Products Features 1.8 to 5.5V Input Voltage Range Controlled Turn-On 200mA and 400mA Current Limit Options Undervoltage Lockout Thermal Shutdown <2uA Shutdown Current Fast Current limit Response Time 3us to Moderate Over Currents 20ns to Hard Shorts Reverse Current Blocking Fault Blanking General Description The FPF2108-FPF2110 is a series of load switches which provides full protection to systems and loads which may encounter large current conditions. This devices contain a 0.125Ω current-limited P-channel MOSFET which can operate over an input voltage range of 1.8-5.5V. Internally, reverse current blocking prevents current 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 part operates in a constant-current mode to prohibit excessive currents from causing damage. For the FPF2108, if the constant current condition still persists after 10ms, the part will shut off the switch and pull the fault signal pin (FLAGB) low. The switch will remain off until the ON pin is cycled. For the FPF2109 and FPF2110, 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. The minimum current limit is 200mA for the FPF2109 while that for the FPF2108 and FPF2110 is 400mA. These parts are available in a space-saving 5 pin SOT23 package. Applications PDAs Cell Phones GPS Devices MP3 Players Digital Cameras Peripheral Ports Hot Swap Supplies Typical Application Circuit TO LOAD VIN VOUT FPF2108 - FPF2110 OFF ON ON GND FLAGB ©2005 Fairchild Semiconductor Corporation FPF2108-FPF2110 Rev. B 1 www.fairchildsemi.com FPF2108-FPF2110 IntelliMAX™ Advanced Load Management Products Functional Block Diagram VIN UVLO ON CONTROL LOGIC REVERSE CURRENT BLOCKING CURRENT LIMIT THERMAL SHUTDOWN VOUT FLAGB GND Pin Configuration VIN 1 GND ON 2 3 SOT23-5 4 FLAGB 5 VOUT Pin Description Pin 1 2 3 4 5 Name VIN GND ON FLAGB VOUT Ground ON Control Input Function Supply Input: Input to the power switch and the supply voltage for the IC Fault Output: Active LO, open drain output which indicates an over current supply, under voltage or over temperature state. Switch Output: Output of the power switch FPF2108-FPF2110 Rev. B 2 www.fairchildsemi.com FPF2108-FPF2110 IntelliMAX™ Advanced Load Management Products Absolute Maximum Ratings Parameter VIN, VOUT, ON, FLAGB to GND Power Dissipation @ TA = 25°C (note 1) Operating Temperature Range Storage Temperature Thermal Resistance, Junction to Ambient Electrostatic Discharge Protection HBM MM 4000 400 -40 -65 Min. -0.3 Max. 6 667 125 150 150 Unit V mW °C °C ° C/W V V Recommended Operating Range Parameter VIN Ambient Operating Temperature, TA Min. 1.8 -40 Max. 5.5 85 Unit V °C Electrical Characteristics VIN = 1.8 to 5.5V, TA = -40 to +85°C unless otherwise noted. Typical values are at VIN = 3.3V and TA = 25°C. Parameter Basic Operation Operating Voltage Quiescent Current Shutdown Current Reverse Block Leakage Current Latch-Off Current (note 2) On-Resistance ON Input Logic High Voltage ON Input Logic Low Voltage ON Input Leakage Off Switch Leakage FLAGB Output Logic Low Voltage FLAGB Output High Leakage Current Protections Current Limit Symbol VIN IQ ISHDN IBLOCK ILATCHOFF RON VIH VIL Conditions Min. 1.8 Typ. Max 5.5 Units V A IOUT = 0mA Von active VIN = 1.8 to 3.3V VIN = 3.3 to 5.5V 95 110 200 2 1 A A A m V VON = VIN, after an overcurrent fault TA = 25°C, IOUT = 50mA TA = -40 to +85°C, IOUT = 50mA VIN = 1.8V VIN = 5.5V VIN = 1.8V VIN = 5.5V VON = VIN or GND 0.75 1.30 50 125 150 160 0.5 1.0 1 1 0.1 0.15 0.2 0.3 1 FPF2109 FPF2108, FPF2110 200 400 300 600 140 130 10 1.5 1.6 47 1.7 400 800 V A A V A mA ISWOFF VON = 0V, VOUT = 0V VIN = 5V, ISINK = 10mA VIN = 1.8V, ISINK = 10mA VIN = 5V, Switch on ILIM VIN = 3.3V, VOUT = 3.0V Thermal Shutdown Shutdown Threshold Return from Shutdown Hysteresis °C Under Voltage Shutdown Under Voltage Shutdown Hysteresis UVLO VIN Increasing V mV FPF2108-FPF2110 Rev. B 3 www.fairchildsemi.com FPF2108-FPF2110 IntelliMAX™ Advanced Load Management Products Electrical Characteristics Cont. VIN = 1.8 to 5.5V, TA = -40 to +85°C unless otherwise noted. Typical values are at VIN = 3.3V and TA = 25°C. Parameter Dynamic Turn on time Turn off time VOUT Rise Time VOUT Fall Time Over Current Blanking Time Short Circuit Response Time Symbol tON tOFF tR tF tBLANK Conditions RL=500 , CL=0.1uF RL=500 , CL=0.


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