LTC1998CS6#TRMPBF

LINEAR TECHNOLOGY  LTC1998CS6#TRMPBF  芯片, 锂电池电压监控器, SOT23-6

The is a 2.5µA 1% Accurate Comparator and Precision Voltage Reference optimized for lithium-ion low battery detection circuits. The LTC1998 features a voltage detection circuit with an adjustable threshold voltage and hysteresis. The threshold voltage can be programmed from 2.5 to 3.25V with two external resistors. A 10 to 750mV hysteresis can be added with a third external resistor. A proprietary internal architecture maintains 1% threshold voltage accuracy over-temperature with low cost 1% external resistors. A separate power supply pin, VLOGIC, allows the battery-low logic output to operate below the battery voltage, allowing compatibility with low voltage microprocessors without a pull-up resistor. Power supply glitches are eliminated by preventing the cross-conducting current which occurs when the output changes state. It operates with battery or supply voltages up to 5.5V and its battery-low output is valid for battery voltages above 1.5V.

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High accuracy trip voltage 1% maximum error using external 1% resistors

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Adjustable threshold voltage and hysteresis

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2.5µA Typical quiescent current

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Output swings rail-to-rail

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Thresholds programmable from 2.5 to 3.25V

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Output state guaranteed for VBATT >=1.5V