Low Cost, 2.7 V to 5.5 V, Micropower Temperature Switches in SOT-23 Preliminary Technical Data ADT6501/ADT6502/ADT6503/ADT6504 FEATURES FUNCTIONAL BLOCK DIAGRAM V 0.5C (typical) accuracy over temperature range CC 4 Factory set trip points from ADT6501 45C to +15C in 10C increments TEMPERATURE +35C to +115C in 10C increments SENSOR No external components required COMPARATOR Maximum temperature of 125C 5 TOVER REFERENCE Open-drain output (ADT6501/ADT6503) Push-pull output (ADT6502/ADT6504) FACTORY PRESET Pin-selectable hysteresis of 2C and 10C TRIP POINT REGISTER 2C/10C Supply current of 30 A (typical) Space-saving, 5-lead SOT-23 package 1 2 3 APPLICATIONS GND GND HYST Medical equipment Figure 1. Automotive Cell phones Hard disk drives Personal computers Electronic test equipment Domestic appliances Process control GENERAL DESCRIPTION The ADT6501/ADT6502/ADT6503/ADT6504 are trip point The ADT6503 and ADT6504 are used for monitoring tempera- temperature switches available in a 5-lead SOT-23 package. Each tures from 45C to +15C only. Therefore, the logic output part contains an internal band gap temperature sensor for local pin becomes active when the temperature goes lower than the temperature sensing. When the temperature crosses the trip point selected trip point temperature. setting, the logic output is activated. The ADT6501/ADT6503 PRODUCT HIGHLIGHTS logic output is active low and open-drain. The ADT6502/ADT6504 logic output is active high and push-pull. The temperature is 1. Wide operating temperature range from 55C to +125C. digitized to a resolution of 0.0625C (12 bit). The factory settings 2. 0.5C typical accuracy from 45C to +115C. are 10C apart starting from 45C to +15C for the cold threshold 3. Factory threshold settings from 45C to +115C in models and from +35C to +115C for the hot threshold models. 10C increments. These devices require no external components and typically 4. Supply voltage is 2.7 V to 5.5 V. consume 30 A supply current. Hysteresis is pin-selectable at 2C and 10C. The temperature switch is specified to operate 5. Supply current of 30 A. over the supply range of 2.7 V to 5.5 V. 6. Space-saving, 5-lead SOT-23 package. The ADT6501 and ADT6502 are used for monitoring 7. Pin-selectable temperature hysteresis of 2C or 10C. temperatures from +35C to +115C only. Therefore, the logic 8. Temperature resolution of 0.0625C. output pin becomes active when the temperature goes higher than the selected trip point temperature. Rev. PrB Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 06096-001ADT6501/ADT6502/ADT6503/ADT6504 Preliminary Technical Data TABLE OF CONTENTS Features .............................................................................................. 1 Converter Details ..........................................................................8 Applications....................................................................................... 1 Factory-Programmed Threshold Range ....................................8 Functional Block Diagram .............................................................. 1 Hysteresis Input .............................................................................8 General Description ......................................................................... 1 Functional Description.................................................................8 Product Highlights ........................................................................... 1 Application Information................................................................ 10 Specifications..................................................................................... 3 Thermal Response Time ........................................................... 10 Absolute Maximum Ratings............................................................ 4 Self-Heating Effects.................................................................... 10 ESD Caution.................................................................................. 4 Supply Decoupling ..................................................................... 10 Pin Configuration and Function Descriptions............................. 5 Temperature Monitoring........................................................... 10 Typical Performance Characteristics ............................................. 6 Outline Dimensions ....................................................................... 13 Theory of Operation ........................................................................ 8 Ordering Guide .......................................................................... 13 Circuit Information...................................................................... 8 Rev. 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