Datasheet Analog Devices LTC1998 — Datenblatt

LTC1998
2.5µA, 1% Accurate
SOT-23 Comparator and Voltage
Reference for Battery Monitoring
DESCRIPTION FEATURES n High Accuracy Trip Voltage: 1% Max Error Using
External 1% Resistors
Adjustable Threshold Voltage and Hysteresis
Quiescent Current: 2.5μA Typ
Output Swings Rail-to-Rail
Thresholds Programmable from 2.5V to 3.25V
Output State Guaranteed for VBATT ≥1.5V
Low Profile (1mm) ThinSOT™ Package The LTC®1998 is a micropower comparator and a precision
adjustable reference in a 6-pin SOT-23 package that is
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 2.5V to 3.25V with two
external resistors. A 10mV 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. APPLICATIONS
n Lithium-Ion Battery-Powered Equipment
PDAs …