поискавой системы для электроныых деталей |
|
LM27 датащи(PDF) 1 Page - National Semiconductor (TI) |
|
|
LM27 датащи(HTML) 1 Page - National Semiconductor (TI) |
1 / 10 page LM27 SOT-23, ±3˚C Accurate, 120˚C-150˚C Factory Preset Thermostat General Description The LM27 is a precision, single digital-output, low-power thermostat comprised of an internal reference, DAC, tem- perature sensor and comparator. Utilizing factory program- ming, it can be manufactured with different trip points as well as different digital output functionality. The trip point (T OS) can be preset at the factory to any temperature in the range of +120˚C to +150˚C in 1˚C increments. The LM27 has one digital output (OS/OS/US/US), one digital input (HYST) and one analog output (V TEMP). The digital output stage can be preset as either open-drain or push-pull. In addition, it can be factory programmed to be active HIGH or LOW. The digital output can be factory programmed to indicate an over tem- perature shutdown event (OS or OS) or an under tempera- ture shutdown event (US or US). When preset as an over- temperature shutdown (OS) it will go LOW to indicate that the die temperature is over the internally preset T OS and go HIGH when the temperature goes below (T OS–THYST). Simi- larly, when preprogrammed as an undertemperature shut- down (US) it will go HIGH to indicate that the temperature is below T US and go LOW when the temperature is above (T US+THYST). The typical hysteresis, THYST, can be set to 2˚C or 10˚C and is controlled by the state of the HYST pin. A V TEMP analog output provides a voltage that is proportional to temperature and has a −10.7mV/˚C output slope. Currently, there are several standard parts available, see ordering information for details. For other part options, con- tact a National Semiconductor Distributor or Sales Repre- sentative for information on minimum order qualification. The LM27 is currently available in a 5-lead SOT-23 package. Applications n Microprocessor Thermal Management n Appliances n Portable Battery Powered Systems n Fan Control n Industrial Process Control n HVAC Systems n Electronic System Protection Features n Internal comparator with pin selectable 2˚C or 10˚C hysteresis n No external components required n Open-drain or push-pull digital output; supports CMOS logic levels n Internal temperature sensor with V TEMP output pin n V TEMP output allows after-assembly system testing n Internal voltage reference and DAC for trip-point setting n Currently available in 5-pin SOT-23 plastic package n Excellent power supply noise rejection Key Specifications j Power Supply Voltage 2.7V to 5.5V j Power Supply Current 40µA(max) 15µA(typ) j Hysteresis Temperature 2˚C or 10˚C(typ) j Temperature Trip Point Accuracy ±3˚C (max) LM27CIM5-2HJ Simplified Block Diagram and Connection Diagram 20030701 The LM27CIM5-2HJ has a fixed trip point of 140˚C. For other trip point and output function availability, please see ordering information or contact National Semiconductor. September 2006 © 2006 National Semiconductor Corporation DS200307 www.national.com |
Аналогичный номер детали - LM27_06 |
|
Аналогичное описание - LM27_06 |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |