AQ265

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 • • Battery Packs and Chargers Electronic System protection Features • • • • • • • 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 Acutechnology Semiconductor Inc. AQ265 Pin Configuration Pin Descriptions Pin num 1 2 3 4 5 Pin Name COLD ADJ GND HOT ADJ VCC OUT Function Adjust pin, connects to lower temperature adjust resistor Ground Adjust pin, connects to high temperature adjust resistor V supply. Must be greater than 2.4V for normal operation. Normally Open Drain, VDSS when thermal threshold is reached. Ordering Information Device AQ265 Note: The Operating Tj -55ºC ≤ 150ºC Hot TTHRESH RANGE 40 < 90ºC Cold TTHRESH RANGE -20 < 15ºC Tol. ± 3ºC PKG Type SOT-23-5 Wrap T&R Ordering Number AQ265GY-M5-AJ-TRL TRL parts are Lead Free and RoHS compliant. www.acutechnology.com 2 Rev. 1.5 January 31, 2007 Acutechnology Semiconductor Inc. AQ265 Absolute Maximum Ratings Stress greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These stress ratings only, and functional operation of the device at these or any conditions beyond those indicated under recommended Operating Conditions is not implied. Exposure to “Absolute Maximum Rating” for extended periods may affect device reliability. Use of standard ESD handling precautions is required. Parameter VCC Voltage VOUT Voltage IOUT Current Cold ADJ Current Hot ADJ Current Operating Junction Temperature Lead Temperature (soldering 10 seconds) Storage Temperature Range Value 18 18 10 10 10 155 260 -65 to +150 Units V V mA mA mA ºC ºC ºC Electrical Specifications Electrical characteristics are guaranteed over the full temperature range -55ºC