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FPF2223 Dataheets PDF



Part Number FPF2223
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description Integrated Load Switch
Datasheet FPF2223 DatasheetFPF2223 Datasheet (PDF)

FPF2223-FPF2225 Integrated Load Switch with Adjustable High Precision Current Limit February 2009 FPF2223-FPF2225 Integrated Load Switch with Adjustable High Precision Current Limittm Features 1.8 to 5.5V Input Voltage Range Typical RDS(ON) = 140m @ VIN = 5.5V Typical RDS(ON) = 160m @ VIN = 3.3V 250-625mA (min) Adjustable Current Limit 5% Current Limit Tolerance @ 625mA (min) 72 (typ) Output Discharge Resistance ESD Protected, Above 8kV HBM and 2kV CDM Applications PDAs Cell Phones GPS Device.

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FPF2223-FPF2225 Integrated Load Switch with Adjustable High Precision Current Limit February 2009 FPF2223-FPF2225 Integrated Load Switch with Adjustable High Precision Current Limittm Features 1.8 to 5.5V Input Voltage Range Typical RDS(ON) = 140m @ VIN = 5.5V Typical RDS(ON) = 160m @ VIN = 3.3V 250-625mA (min) Adjustable Current Limit 5% Current Limit Tolerance @ 625mA (min) 72 (typ) Output Discharge Resistance ESD Protected, Above 8kV HBM and 2kV CDM Applications PDAs Cell Phones GPS Devices MP3 Players Digital Cameras Peripheral Ports Notebook Computer General Description The FPF2223-FPF2225 are low RDS(ON) P-Channel MOSFET load switches with high precision current limit value. The input voltage range operates from 1.8V to 5.5V to fulfill today's Ultra Portable Device's supply requirement. Switch control is by a logic input (ON) capable of interfacing directly with low voltage control signal. On-chip pull-down is available for output quick discharge when switch is turned off. For the FPF2224, if the constant current condition still persists after 30ms, these parts will shut off the switch and pull the fault signal pin (FLAGB) low. The FPF2223 has an auto-restart feature, which will turn the switch on again after 450mS if the ON pin is still active. The FPF2224 do not have this auto-restart feature so the switch will remain off until the ON pin is cycled. For the FPF2225, a current limit condition will immediately pull the fault signal pin low and the part will remain in the constantcurrent mode until the switch current falls below the current limit. For the FPF2223 through FPF2225, the current limit is set by an external resistor and the minimum current limit is 250mA. BOTTOM Pin 1 TOP Ordering Information Part FPF2223 FPF2224 FPF2225 Current Limit (mA) 250-625 250-625 250-625 ©2008 Fairchild Semiconductor Corporation FPF2223-FPF2225 Rev. C Current Limit Blanking Time (mS) 30 30 NA Auto-Restart Time (mS) 450 NA NA 1 ON Pin Activity Active HI Active HI Active HI www.fairchildsemi.com FPF2223-FPF2225 Integrated Load Switch with Adjustable High Precision Current Limit Typical Application Circuit OFF ON FPF2223/4/5 VIN VOUT FLAGB ON ISET GND TO LOAD Functional Block Diagram VIN UVLO THERMAL SHUTDOWN ON CONTROL LOGIC CURRENT LIMIT Output Discharge GND VOUT ISET FLAGB FPF2223-FPF2225 Rev. C 2 www.fairchildsemi.com FPF2223-FPF2225 Integrated Load Switch with Adjustable High Precision Current Limit Pin Configuration ON 6 1 ISET GND 5 2 VIN FLAGB 4 3 VOUT MicroFET 2x2 6L (BOTTOMVIEW) Pin Description Pin Name 1 ISET 2 VIN 3 VOUT 4 FLAGB 5 GND 6 ON Function Current Limit Set Input : A resistor from ISET to ground sets the current limit for the switch Supply Input: Input to the power switch and the supply voltage for the IC Switch Output: Output of the power switch Fault Output: Active LO, open drain output which indicates an over current, supply under voltage or over temperature state Ground ON/OFF Control Input Absolute Maximum Ratings Parameter VIN, VOUT, ON, FLAGB TO GND ISET TO GND Power Dissipation @ TA = 25°C Operating and Storage Junction Temperature Thermal Resistance, Junction to Ambient Electrostatic Discharge Protection HBM MM CDM Min. -0.3 -0.3 -65 8000 400 2000 Max. 6 0.3 1.2 125 86 Unit V V W °C °C/W V 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 Symbol Conditions Min. Basic Operation Operating Voltage Quiescent Current VIN Shutdown Current VIN 1.8 IOUT=0mA, VIN=VON=1.8V, RSET=36K IQ IOUT=0mA, VIN=VON=3.3V, RSET=36K IOUT=0mA, VIN=VON=5.5V, RSET=36K VON=0V, VIN=5.5V, VOUT=short to GND Typ. 45 50 55 Max. Units 5.5 V 75 80 A 95 2.5 A FPF2223-FPF2225 Rev. C 3 www.fairchildsemi.com FPF2223-FPF2225 Integrated Load Switch with Adjustable High Precision Current Limit Parameter VOUT Shutdown Current On-Resistance Output Discharge Resistance ON Input Logic High Voltage (ON) ON Input Logic Low Voltage (OFF) On Input Leakage FLAGB Output Logic Low Voltage FLAGB Output High Leakage Current Symbol Conditions RON VIH VIL VON=0V, VOUT=5.5V, VIN=short to GND VIN=5.5V, IOUT=200mA, TA=25°C VIN=3.3V, IOUT=200mA, TA=25°C VIN=1.8V, IOUT=200mA, TA=25°C VIN=3.3V, IOUT=200mA, TA=-40 to +80°C VIN=3.3V, VON=0V, IOUT=10mA VIN=1.8V VIN=5.5V VIN=1.8V VIN=5.5V VON = VIN or GND VIN=5.5V, ISINK=100 A VIN=1.8V, ISINK=100 A VIN=5.5V, Switch on Min. 90 0.8 1.4 -1 Typ. 140 160 230 72 0.05 0.12 Max. 1 185 210 300 265 105 Units A m V 0.5 1.0 1 0.1 0.25 V A V 1 uA Protections Current Limit ILIM Thermal Shutdown Under Voltage Shutdown Under Voltage Shutdown Hysteresis Dynamic Turn On Time Turn Off Time VOUT Rise Time VOUT Fall Time Over Current Blanking Time Auto-Restart Time UVLO tON tOFF tRISE tFALL tBLANK tRSTRT Current Limit Response Time VIN.


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