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MAX4995B Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX4995B Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 12 page 50mA to 600mA Programmable Current-Limit Switches 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. IN, ON, ON, FLAG, OUT, and SETI to GND .............-0.3V to +6V Current into Any Pin (Except IN, OUT)................................20mA OUT Short Circuit to GND .................................................800mA Continuous Power Dissipation (TA = +70°C) (Note 1) 10-Pin UTQFN (derate 6.99mW/ °C above TA = +70°C) ................................................................559mW Junction-to-Ambient Thermal Resistance ( θJA) (Note 2) ...................................................................143.1°C/W Operating Temperature Range .........................-40°C to +125°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C Note 1: These power limits are defined by the thermal characteristics of the package, maximum function temperature (+150°C), and the JEDEC51-7 defined setup. Maximum power dissipation could be lower, limited by the thermal-shutdown protection included in this IC. Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four- layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (VIN = +1.7V to +5.5V, RSETI = 94.3kΩ, CIN = 1µF, and TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at VIN = +3.3V, TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SUPPLY OPERATION Operating Voltage VIN 1.7 5.5 V Quiescent Current IQ IOUT = 0, switch on, VIN = 3.3V 170 300 µA Latchoff Current ILATCH VIN = 3.3V, IOUT = 0 after an overcurrent fault (MAX4995B) 815 µA Shutdown Forward Current ISHDN VON = 0, VON = VIN, VIN = 5.5V, VOUT = 0 0.01 5µA Shutdown Reverse Current IRSHDN VON = 0, VON = VIN, VIN = 1.7V, VOUT = 5.5V (current into OUT) 0.01 1µA INTERNAL FET Switch-On Resistance RON VIN = 3.3V, IOUT lower than ILIM 130 350 m Ω Normalized Current-Limit Accuracy ILIM = 50mA to 600mA, VIN - VOUT = 1V, VIN = 3.3V (Note 3) 0.9 1 1.1 — (RSETI + 2.48) x ILIM Product ILIM = 50mA to 600mA, VIN - VOUT = 1V, VIN = 3.3V 26138 29042 31946 V Reverse Blocking Current VOUT > VIN + 300mV after reverse-current- limit shutdown 10 µA Reverse Blocking Threshold VOUT = VIN + 300mV, OUT falling until switch turns on 35 110 210 mV FLAG Assertion Drop Voltage Threshold VFA Increase (VIN - VOUT) drop until FLAG asserts, IOUT limiting, VIN = 3.3V 650 mV ON, ON INPUT ON, ON Input Leakage ILEAK VON, VON = VIN or GND -1 +1 µA ON, ON Input Logic-High Voltage VIH 1.6 V ON, ON Input Logic-Low Voltage VIL 0.4 V FLAG OUTPUT FLAG Output Logic-Low Voltage ISINK = 1mA 0.4 V FLAG Output Leakage Current VIN = VFLAG = 5.5V, FLAG deasserted 1 µA |
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