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DS2778G+TR Datasheet(PDF) 6 Page - Maxim Integrated Products |
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DS2778G+TR Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 46 page 2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with Protector and Optional SHA-1 Authentication 6 _______________________________________________________________________________________ Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) DISCHARGE-OVERCURRENT PROTECTION DELAY DS2775/6/7/8 toc01 DC FET GATE 2V/div 2V/div 0V 0V 0V 0V 1V/div 20mV/div DC FET SOURCE VGS VSNS 25m Ω SENSE RESISTOR WITH DISCHARGE- OVERCURRENT THRESHOLD = 38mV TIME (ms) 18 16 14 12 10 8 6 4 2 020 CC FET GATE TURN-OFF DURING CHARGE-OVERCURRENT EVENT DS2775/6/7/8 toc02 CC FET GATE 2V/div 2V/div 0V 0V 0V 0V 1V/div 20mV/div CC FET SOURCE VGS CC FET VSNS 25m Ω SENSE RESISTOR WITH CHARGE- OVERCURRENT THRESHOLD = 25mV TIME ( μs) 45 40 35 30 25 20 15 10 5 050 DC FET GATE TURN-OFF DURING SHORT-CIRCUIT EVENT DS2775/6/7/8 toc03 DC FET GATE 2V/div 0V 0V 0V 0V 2V/div 1V/div 50mV/div DC FET SOURCE VGS DC FET VSNS 25m Ω SENSE RESISTOR WITH SHORT-CIRCUIT THRESHOLD = 150mV TIME ( μs) 18 16 14 12 10 8 6 4 2 020 SHORT-CIRCUIT PROTECTION DELAY DS2775/6/7/8 toc04 DC FET GATE 2V/div 0V 0V 0V 0V 2V/div 1V/div 100mV/div DC FET SOURCE VGS DC FET VSNS 25m Ω SENSE RESISTOR WITH SHORT-CIRCUIT THRESHOLD = 150mV TIME ( μs) 180 160 140 120 100 80 60 40 20 0 200 VOLTAGE MEASUREMENT ACCURACY VINX (V) 4 3 2 1 2 4 6 8 10 12 14 16 18 20 0 0 +70 °C -20 °C +25 °C CHARGE-PUMP STARTUP EXITING SLEEP MODE (VDD = 8V NO LOAD ON PK+) DS2775/6/7/8 toc06 TIME (ms) 90 80 10 20 30 50 60 40 70 0 2 3 4 5 6 7 8 -2 0 100 2.75V 12.6V |
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