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Ultralow Power Quad Comparators with Reference
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LTC1443/LTC1444/LTC1445
Ultralow Power Quad
Comparators with Reference
Features Description Ultralow Quiescent Current: 8.5µA Max
n Reference Output Drives 0.01µF Capacitor
n Adjustable Hysteresis (LTC1444/LTC1445)
n Wide Supply Range Single: 2V to 11V Dual: ±1V to ±5.5V
n Input Voltage Range Includes the Negative Supply
n TTL/CMOS Compatible Outputs
n Propagation Delay: 12µs (Typ) (10mV Overdrive)
n No Crowbar Current
n 40mA Continuous Source Current
n Pin Compatible Upgrades for MAX924 (LTC1443)
n Low Profile (5mm × 4mm × 0.8mm) DFN Package The LTC®1443/LTC1444/LTC1445 are ultralow power quad
comparators with a built-in reference. The comparators
feature less than 8.5µA supply current over temperature,
an internal reference (1.182V ±1% for LTC1443 or 1.221V
±1% for LTC1444/LTC1445), programmable hysteresis
(LTC1444/LTC1445) and TTL/CMOS output (LTC1443/
LTC1445) that sinks and sources current (open-drain
output for LTC1444). The reference output can drive a
bypass capacitor of up to 0.01µF without oscillation. n Applications n n Battery-Powered System Monitoring
Threshold Detectors …