Datasheet LTC1998 (Analog Devices) - 6

LTC1998
PIN FUNCTIONS BATT (Pin 1):
Battery Voltage to be monitored. Supply
VH.A (Pin 4):
Hysteresis Adjust. Hysteresis threshold current is also drawn from this pin. Board layout should voltage VTH2 = 2.5V + (VH.A/2). VH.A can be supplied by connect this pin to the battery(+) terminal, through a trace a voltage source or resistor divider. VH.A must always be that does not conduct load current. programmed to a higher potential than VTH.A. Hysteresis voltage, V
GND (Pin 2):
Ground should be connected to the battery HYST = VTH2 – VBATT.Th. (–) terminal through a trace that does not conduct load
VLOGIC (Pin 5):
Positive Supply Voltage for Output Driver. return current. This voltage can be driven from an external logic supply or tied to BATT.
VTH.A (Pin 3):
Threshold Adjust Pin. Adjusts the low battery threshold voltage, VBATT.Th = 2.5V + (VTH.A/2). VTH.A can be
BATTLO (Pin 6):
Output of Comparator. Low for BATT supplied by a voltage source or a resistor divider. < VBATT.Th (low battery threshold voltage). Output state guaranteed for VBATT ≥ 1.5V. 1998fb 6