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FPF2116 IntelliMAXTM Advanced Load Management Products January 2006 FPF2116 IntelliMAXTM Advanced Load Management Products Features 1.8 to 5.5V Input Voltage Range Controlled Turn-On 200mA Current Limit Undervoltage Lockout Thermal Shutdown <2A Shutdown Current Auto Restart Fast Current limit Response Time 3s to Moderate Over Currents 20ns to Hard Shorts Fault Blanking Reverse Current Blocking General Description The FPF2116 is a load switch which provides full protection to systems and loads which may encounter large current conditions. This device contains a 0.125 current-limited P-channel MOSFET which can operate over an input voltage range of 1.8-5.5V. Internally, current is prevented 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. The 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. If the constant current condition still persists after 30ms, the part will shut off the switch and pull the fault signal pin (FLAGB) low. An auto-restart feature will turn the switch on again after 480ms if the ON pin is still active. The minimum current limit is 200mA. The part is 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 FPF2116 OFF ON ON GND FLAGB (c)2006 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com FPF2116 Rev. B3 FPF2116 IntelliMAXTM 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 FPF2116 Rev. B3 2 www.fairchildsemi.com FPF2116 IntelliMAXTM Advanced Load Management Products Absolute Maximum Ratings Parameter VIN, VOUT, ON, FLAGB to GND Power Dissipation @ TA = 25C (note 1) Operating Junction Temperature Storage Temperature Thermal Resistance, Junction to Ambient Electrostatic Discharge Protection HBM MM Min. -0.3 -40 -65 4000 400 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 +85C unless otherwise noted. Typical values are at VIN = 3.3V and TA = 25C. Parameter Basic Operation Operating Voltage Quiescent Current VIN Shutdown Current VOUT Shutdown Current On-Resistance ON Input Logic High Voltage (ON) ON Input Logic Low Voltage ON Input Leakage Off Switch Leakage FLAGB Output Logic Low Voltage FLAGB Output High Leakage Current Protections Current Limit Thermal Shutdown Symbol VIN IQ Conditions Min. 1.8 Typ. 95 110 125 150 0.1 0.15 300 140 130 10 1.6 50 Max 5.5 200 2 2 160 0.5 1.0 1 1 0.2 0.3 1 400 1.7 - Units V A A A m V V A A V A mA C IOUT = 0mA VIN = 1.8 to 3.3V VIN = 3.3 to 5.5V 0.75 1.30 200 1.5 - VON = 0V, VIN = 5.5V, VOUT short to GND VON = 0V, VOUT = 5.5V, VIN short to GND RON VIH VIL TA = 25C, IOUT = 50mA TA = -40 to +85C, IOUT = 50mA VIN = 1.8V VIN = 5.5V VIN = 1.8V VIN = 5.5V VON = VIN or GND 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 Shutdown Threshold Return from Shutdown Hysteresis Under Voltage Shutdown Under Voltage Shutdown Hysteresis UVLO VIN Increasing V mV FPF2116 Rev. B3 3 www.fairchildsemi.com FPF2116 IntelliMAXTM Advanced Load Management Products Electrical Characteristics Cont. VIN = 1.8 to 5.5V, TA = -40 to +85C unless otherwise noted. Typical values are at VIN = 3.3V and TA = 25C. Parameter Dynamic Turn on time Turn off time VOUT Rise Time VOUT Fall Time Over Current Blanking Time Auto-Restart Time Short Circuit Response Time Symbol tON tOFF tRISE tFALL tBLANK tRESTART Conditions RL=500, CL=0.1F RL=500, CL=0.1F RL=500, CL=0.1F RL=500, CL=0.1F Min. 15 240 Typ. 25 50 12 120 30 480 3 20 Max 60 960 - Units s s s s ms ms s ns VIN = VON = 3.3V. Moderate Over-Current Condition. VIN = VON = 3.3V. Hard Short. - Note 1: Package power dissipation on 1square inch pad, 2 oz copper board. FPF2116 Rev. B3 4 www.fairchildsemi.com FPF2116 IntelliMAXTM Advanced Load Management Products Typical Characteristics 120 VON = VIN 110 130 SUPPLY CURRENT (uA) SUPPLY CURRENT (uA) 110 VIN = 5.5V VIN = 3.3V 100 90 80 70 60 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 SUPPLY VOLTAGE (V) 90 70 VIN = 1.8V 50 -40 -15 10 35 o 60 85 TJ, JUNCTION TEMPERATURE ( C) Figure 1. Quiescent Current vs. Input Voltage Figure 2. Quiescent Current vs. Temperature 2500 500 SUPPLY CURRENT (nA) VIN = 5.5V SUPPLY CURRENT (nA) 2000 400 1500 300 VIN = 5.5V 1000 VIN = 3.3V 200 VIN = 3.3V 500 100 0 -40 -15 10 35 60 85 0 -40 -15 10 35 o 60 85 TJ, JUNCTION TEMPERATURE (oC) TJ, JUNCTION TEMPERATURE ( C) Figure 3. ISHUTDOWN Current vs. Temperature Figure 4. ISWITCH-OFF Current vs. Temperature 0.20 0.18 SUPPLY CURRENT (uA) SUPPLY CURRENT (uA) 1.4 1.2 1 0.8 0.6 0.4 VIN = 3.3V VIN = 5.5V 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 SUPPLY VOLTAGE (V) 0.2 0 -40 -15 10 35 60 85 TJ, JUNCTION TEMPERATURE (oC) Figure 5. Reverse Current vs. Output Voltage Figure 6. Reverse Current vs. Temperature FPF2116 Rev. B3 5 www.fairchildsemi.com FPF2116 IntelliMAXTM Advanced Load Management Products Typical Characteristics 500 500 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 400 400 300 300 200 200 100 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 VIN-VOUT (V) 100 -40 -15 10 35 o 60 85 TJ, JUNCTION TEMPERATURE ( C) Figure 7. Current Limit vs. Output Voltage Figure 8. Current Limit vs. Temperature 200 180 1.4 1.2 ON THRESHOLD (V) 85 160 RON (mOhms) 140 VIN = 1.8V VIN = 3.3V 1 0.8 0.6 0.4 0.2 0 120 VIN = 5.5V 100 80 60 -40 -15 10 35 60 1.5 2 2.5 3 3.5 4 4.5 5 5.5 TJ, JUNCTION TEMPERATURE (oC) VIN, INPUT VOLTAGE (V) Figure 9. R(ON) vs. Temperature Figure 10. On Threshold vs. VIN 100 1000 ILOAD = 10mA VCC = 3.3V TD(OFF) ILOAD = 10mA VCC = 3.3V T(FALL) TURN-ON/OFF TIMES (us) DELAY TIMES (us) 100 TD(ON) T(RISE) 10 10 -40 -15 10 35 o 60 85 1 -40 -15 10 35 o 60 85 TJ, JUNCTION TEMPERATURE ( C) TJ, JUNCTION TEMPERATURE ( C) Figure 11. TON/TOff vs. Temperature Figure 12. TRISE/TFALL vs. Temperature FPF2116 Rev. B3 6 www.fairchildsemi.com FPF2116 IntelliMAXTM Advanced Load Management Products Typical Characteristics 40 600 FLAG-BLANKING TIME (ms) RESTART TIME (ms) 35 550 30 500 25 450 20 -40 -15 10 35 o 60 85 400 -40 -15 10 35 o 60 85 TJ, JUNCTION TEMPERATURE ( C) TJ, JUNCTION TEMPERATURE ( C) Figure 13. TBLANK vs Temperature Figure 14. TRESTART vs Temperature VON 2V/DIV VOUT 2V/DIV IOUT 200mA/DIV VFLAGB 2V/DIV 10ms/DIV Figure 15. TBLANK Response VON 2V/DIV VOUT 2V/DIV IOUT 200mA/DIV VFLAGB 2V/DIV 100ms/DIV Figure 16. TRESTART Response RL = 500, CL = 0.1F VON 2V/DIV VON 2V/DIV RL = 500, CL = 0.1F IOUT 10mA/DIV IOUT 10mA/DIV 100s/DIV Figure 17. TON Response 200ns/DIV Figure 18. TOFF Response FPF2116 Rev. B3 7 www.fairchildsemi.com FPF2116 IntelliMAXTM Advanced Load Management Products Typical Characteristics VIN 2V / DIV CIN = 10F COUT = 0.1F VIN/VON 2V/DIV IOUT 5A/DIV VOUT 2V/DIV IOUT 200mA/DIV VIN = VON 20s/DIV Figure 19. Short Circuit Response Time (Output Shorted to GND) 50s/DIV Figure 20. Current Limit Response (Switch power up to hard short) VIN 2V/DIV VON 2V/DIV IOUT 200mA/DIV 50s/DIV Figure 21. Current Limit Response Time (Output Shorted to GND by 10, moderate short) FPF2116 Rev. B3 8 www.fairchildsemi.com FPF2116 IntelliMAXTM Advanced Load Management Products Description of Operation The FPF2116 is a current limited switch that protects systems and loads which can be damaged or disrupted by the application of high currents. The core of the device is a 0.125 P-channel MOSFET and a controller capable of functioning over a wide input operating range of 1.8-5.5V. The controller protects against system malfunctions through current limiting, under-voltage lockout and thermal shutdown. The current limit is preset for 200mA. Current Limiting The current limit ensures that the current through the switch doesn't exceed 400mA while not limiting at less than 200mA. The part has a blanking time of 30 ms, nominally, during which the switch will act as a constant current source. At the end of the blanking time, the switch will be turned-off and the FLAGB pin will activate to indicate that current limiting has occurred. Under-Voltage Lockout The under-voltage lockout turns-off the switch if the input voltage drops below the under-voltage lockout threshold. With the ON pin active the input voltage rising above the under-voltage lockout threshold will cause a controlled turn-on of the switch which limits current over-shoots. On/Off Control The ON pin controls the state of the switch. Activating ON continuously holds the switch in the on state so long as there is no fault. An under-voltage on VIN or a junction temperature in excess of 150C overrides the ON control to turn off the switch. In addition, excessive current will cause the switch to turn off. The part has an Auto-Restart feature which will automatically turn the switch on again after 480 ms. ON is active HI and has a low threshold making it capable of interfacing with low voltage signals. When the MOSFET is off, the body diode is disabled so no current can flow through it. Thermal Shutdown The thermal shutdown protects the part from internally or externally generated excessive temperatures. During an over-temperature condition the FLAGB is activated and the switch is turned-off. The switch automatically turns-on again if temperature of the die drops below the threshold temperature. Fault Reporting Upon the detection of an over-current, an input under-voltage, or an over-temperature condition, the FLAGB signals the fault mode by immediately activating LO. The FLAGB goes LO at the end of the blanking time. It will remain LO during the fault and immediately returns HI at the end of the fault condition. FLAGB is an open-drain MOSFET which requires a pull-up resistor between VIN and FLAGB. During shutdown, the pull-down on FLAGB is disabled to reduce current draw from the supply. Ordering Information Part FPF2116 Current Limit [mA] 200 Current Limit Blanking Time [ms] 30 Auto-Restart Time [ms] 480 ON Pin Activity Active HI Top Mark 2116 FPF2116 Rev. B3 9 www.fairchildsemi.com FPF2116 IntelliMAXTM Advanced Load Management Products Application Information Typical Application VIN VOUT FPF2116 Battery 5.5V OFF ON C1 = 10F 5.5V MAX ON GND FLAGB R1 = 100K R2 = 110 C2 = 0.1F Input Capacitor To limit the voltage drop on the input supply caused by transient in-rush currents when the switch turns-on into a discharged load capacitor or a short-circuit, a capacitor needs to be placed between VIN and GND. A 0.1uF ceramic capacitor, CIN, placed close to the pins is usually sufficient. Higher values of CIN can be used to further reduce the voltage drop. Board Layout For best performance, all traces should be as short as possible. To be most effective, the input and output capacitors should be placed close to the device to minimize the effects that parasitic trace inductances may have on normal and short-circuit operation. Using wide traces for VIN, VOUT and GND will help minimize parasitic electrical effects along with minimizing the case to ambient thermal impedance. Output Capacitor A 0.1uF capacitor COUT, should be placed between VOUT and GND. This capacitor will prevent parasitic board inductances from forcing VOUT below GND when the switch turns-off. The total output capacitance needs to be kept below a maximum value, COUT(max), to prevent the part from registering an over-current condition and turning off the switch. The maximum output capacitance can be determined from the following formula, I LIM ( min ) x t BLANK ( min ) C OUT ( max ) = ----------------------------------------------------------------V IN (1) Power Dissipation During normal operation as a switch, the power dissipation is small and has little effect on the operating temperature of the part. The parts with the higher current limits will dissipate the most power and that will only be, P = ( I LIM ) x R DS = ( 0.4 ) x 0.125 = 20mW 2 2 (2) When in current limit the maximum power dissipation will occur when the output is shorted to ground. The power dissipation will scale by the Auto-Restart Time, tRSTRT, and the Over Current Blanking Time, tBLANK, so that the maximum power dissipated is typically, t BLANK P ( max ) = ------------------------------------------- x V IN ( max ) x I LIM ( max ) t RETRY + t BLANK 60 = ---------------------- x 5.5 x 0.4 = 130mW 60 + 960 (3) FPF2116 Rev. B3 10 www.fairchildsemi.com FPF2116 IntelliMAXTM Advanced Load Management Products Dimensional Outline and Pad Layout FPF2116 Rev. B3 11 www.fairchildsemi.com FPF2116 IntelliMAXTM Advanced Load Management Products TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ACExTM ActiveArrayTM BottomlessTM Build it NowTM CoolFETTM CROSSVOLTTM DOMETM EcoSPARKTM E2CMOSTM EnSignaTM FACTTM FACT Quiet SeriesTM FAST(R) FASTrTM FPSTM FRFETTM GlobalOptoisolatorTM GTOTM HiSeCTM I2CTM i-LoTM ImpliedDisconnectTM IntelliMAXTM Across the board. Around the world.TM The Power Franchise(R) Programmable Active DroopTM DISCLAIMER ISOPLANARTM LittleFETTM MICROCOUPLERTM MicroFETTM MicroPakTM MICROWIRETM MSXTM MSXProTM OCXTM OCXProTM OPTOLOGIC(R) OPTOPLANARTM PACMANTM POPTM Power247TM PowerEdgeTM PowerSaverTM PowerTrench(R) QFET(R) QSTM QT OptoelectronicsTM Quiet SeriesTM RapidConfigureTM RapidConnectTM SerDesTM ScalarPumpTM SILENT SWITCHER(R) SMART STARTTM SPMTM StealthTM SuperFETTM SuperSOTTM-3 SuperSOTTM-6 SuperSOTTM-8 SyncFETTM TinyLogic(R) TINYOPTOTM TruTranslationTM UHCTM UltraFET(R) UniFETTM VCXTM WireTM FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Product Status Formative or In Design First Production Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. Rev. I17 Preliminary No Identification Needed Full Production Obsolete Not In Production FPF2116 Rev. B3 12 www.fairchildsemi.com |
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