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SP6656ER3 Datasheet(PDF) 2 Page - Sipex Corporation |
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SP6656ER3 Datasheet(HTML) 2 Page - Sipex Corporation |
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2 / 16 page  2 Date: 3/6/06 SP6656, 400mA Synchronous Buck Regulator with Dynamically Adjustable Voltage Output © Copyright 2006 Sipex Corporation VIN = UVIN = VEN = 3.6V, VOUT = VFB, IO = 0mA, TAMB = -40°C to +85°C, typical values at 25°C unless otherwise noted. PV IN,VIN .............................................................................................. 6V All other pins .............................................................. -0.3V to V IN+0.3V PV IN, PGND, LX current ........................................................................ 2A Storage Temperature .................................................. -65 °C to 150 °C Operating Temperature ................................................. -40°C to +85°C ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. ELECTRICAL CHARACTERISTICS PARAMETER MIN TYP MAX UNITS CONDITIONS Input Voltage Operating UVLO 5.5 V Range Minimum Output Voltage 1.0 V FB Set Voltage, Vr 0.784 0.800 0.816 V 25°C, IO = 200mA Close Loop. LI = 10µH, COUT = 22µF Overall Accuracy Measured at VIN = 5.5V, no load and (-40°C to 85°C) ±5% VIN=3.6V, 200mA load, Close Loop (0°C to 70°C) ±4 On-Time Constant - KON 1.5 2.25 3.0 V*µsClose Loop, LI = 10µH,COUT = 22µF Min, TON=KON/(VIN-VOUT) Off-Time Constant - KOFF 1.6 2.4 3.2 V*µsInductor current limit tripped, VFB = 0.5V Min, TOFF=KOFF/VOUT Measured at VOUT = 1V Off-Time Blanking 100 ns Turn On Time 250 400 µs 400mA Load PMOS Switch Resistance 0.3 0.6 Ω IPMOS = 200mA NMOS Switch Resistance 0.3 0.6 Ω INMOS = 200mA Inductor Current Limit 500 625 750 mA VFB = 0.5V Power Efficiency 96 % VOUT = 2.5V, IO = 200mA 92 VOUT = 3.3V, IO = 400mA Minimum Guaranteed Load 400 500 mA Current VIN Quiescent Current 20 30 µAVOUT = 3.3V, VIN = 3.6V and VIN = 5.5V VIN Shutdown Current 1 500 nA EN = 0.0V VOUT Quiescent Current 2 5 µAVOUT = 3.3V VOUT Shutdown Current 1 500 nA EN = 0.0V UVLO Undervoltage Lockout 2.55 2.70 2.85 V EN = VIN, Threshold, VIN falling UVLO hysteresis 40 mV OVSO Output Voltage 50 100 mV VIN = EN; Iovso =1mA; OVSI = 1 = Vcc OVSO Leakage Current 5 100 nA VIN = EN; Vovso= 3.6V;OVSI= 0.0V= GND Over-Temperature 140 °C Rising Trip Point Over-Temperature Hysteresis 14 °C EN Leakage Current 1 500 nA EN Input Threshold Voltage 0.60 0.90 V High to Low Transition 1.25 1.8 V Low to High Transition FB Leakage Current 1 100 nA FB =1V LX Leakage 3 5 µA EN = 0.0V, VIN = 3.6V LX = 0.0V, LX = VIN + 0.2V OVSI Leakage Current 1 500 nA OVSI Input Threshold Voltage 0.60 0.90 V High to Low Transition 1.25 1.8 Low to High Transition |
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