CONFIDENTIAL
AQ265
Adjustable
Hot- Cold
Thermostat
SOT23-5 Package
Preliminary Specification
Revision 1.5
January 31, 2007
General Description
Specifically design to reside in battery packs,
the
device AQ265 is used to stop the charge or discharge
of a battery when the battery temperature is outside of
the safe temperature range.
The AQ265 is an accurate low-power solid-state
thermostat that provides shut down alarm at both cold
and hot temperatures. It features very low standby
current, which
prolongs battery shelf life.
The hot
temperature trip point is 40ºC and can be adjusted
with one external resistor from 40ºC to 90ºC. The cold
trip point is -20ºC and can be adjusted with one
external resistor from -20ºC to 15ºC. Thermal
hysteresis is internally programmed to guarantee
stability at the transition points.
At temperatures between its hot and cold trip points,
the AQ265 lies quietly with open drain while drawing
ICC of only 20µA. When either the hot or cold
threshold temperature is reached the OUT pin will sink
>200µA providing a low power signal to disconnect the
battery from its load and/or charger.
Applications
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•
Battery Packs and Chargers
Electronic System protection
Features
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•
•
•
•
•
•
20µA off state current, prolongs battery shelf life
+/-3 degrees Celsius accuracy
Adjustable Hot and cold temperature trip points
Internally programmed thermal hysteresis
Excellent power supply noise rejection
Offered in very small SOT23-5 package.
RoHS Compliant
Block Diagram
www.acutechnology.com
AQ265
ACUTECH [ ACUTECHNOLOGY SEMICONDUCTOR ]
