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LTC1998C Datasheet(PDF) 6 Page - Linear Technology |
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LTC1998C Datasheet(HTML) 6 Page - Linear Technology |
6 / 8 page LTC1998 6 1998fa PIN FUNCTIONS BATT (Pin 1): Battery Voltage to be monitored. Supply current is also drawn from this pin. Board layout should connect this pin to the battery(+) terminal, through a trace that does not conduct load current. GND (Pin 2): Ground should be connected to the battery (–) terminal through a trace that does not conduct load return current. VTH.A(Pin3): ThresholdAdjustPin.Adjuststhelowbattery threshold voltage, VBATT.Th = 2.5V + (VTH.A/2). VTH.A can be supplied by a voltage source or a resistor divider. VH.A (Pin 4): Hysteresis Adjust. Hysteresis threshold voltage VTH2 = 2.5V + (VH.A/2). VH.A can be supplied by a voltage source or resistor divider. VH.A must always be programmed to a higher potential than VTH.A. Hysteresis voltage, VHYST = VTH2 – VBATT.Th. VLOGIC (Pin 5): Positive Supply Voltage for Output Driver. This voltage can be driven from an external logic supply or tied to BATT. BATTLO (Pin 6): Output of Comparator. Low for BATT < VBATT.Th (low battery threshold voltage). Output state guaranteed for VBATT ≥ 1.5V. |
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