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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LM75 데이터시트(PDF) 1 Page - Maxim Integrated Products |
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LM75 데이터시트(HTML) 1 Page - Maxim Integrated Products |
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1 / 12 page  General Description The LM75 temperature sensor includes a delta-sigma analog-to-digital converter, and a digital overtempera- ture detector. The host can query the LM75 through its I2C interface to read temperature at any time. The open-drain overtemperature output (OS) sinks current when the programmable temperature limit is exceeded. The OS output operates in either of two modes, com- parator or interrupt. The host controls the temperature at which the alarm is asserted (TOS) and the hysteresis temperature below which the alarm condition is not valid (THYST). Also, the LM75’s TOS and THYST regis- ters can be read by the host. The address of the LM75 is set with three pins to allow multiple devices to work on the same bus. Power-up is in comparator mode, with defaults of TOS = +80°C and THYST = +75°C. The 3.0V to 5.5V supply voltage range, low supply current, and I2C interface make the LM75 ideal for many applica- tions in thermal management and protection. Applications Thermal System Management Thermal Protection Test Equipment Computers and Office Electronics Features o SO (SOP) and µMAX® (µSOP) Packages o I2C Bus Interface o Separate Open-Drain OS Output Operates as Interrupt or Comparator/Thermostat Input o Register Readback Capability o Power-Up Defaults Permit Stand-Alone Operation as a Thermostat o 3.0V to 5.5V Supply Voltage o Low Operating Supply Current 250µA (typ), 1mA (max) o 4µA (typ) Shutdown Mode Minimizes Power Consumption o Up to Eight LM75s Can Be Connected to a Single Bus o Pin- and/or Register-Compatible with Improved- Performance Maxim Sensors Including MAX7500, MAX6625, MAX6626, DS75LV, and DS7505 Digital Temperature Sensor and Thermal Watchdog with 2-Wire Interface ________________________________________________________________ Maxim Integrated Products 1 Functional Diagram Ordering Information/Selector Guide 19-4385; Rev 0; 3/09 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. µMAX is a registered trademark of Maxim Integrated Products, Inc. Note: Devices are specified over the -55°C to +125°C temperature range and include I2C noise filter. + Denotes a lead(Pb)-free/RoHS-compliant package. T&R = Tape and reel. PART PIN-PACKAGE PKG SUPPLY VOLTAGE (V) TOP MARK LM75BIM-3+ 8 SO (SOP) Bulk 3.3 LM75BIM-3 LM75BIMX-3+ 8 SO (SOP) T&R 3.3 LM75BIM-3 LM75BIMM-3+ 8 µMAX (µSOP) Bulk 3.3 T01B LM75BIMMX-3+ 8 µMAX (µSOP) T&R 3.3 T01B LM75BIM-5+ 8 SO (SOP) Bulk 5.0 LM75BIM-5 LM75BIMX-5+ 8 SO (SOP) T&R 5.0 LM75BIM-5 LM75BIMM-5+ 8 µMAX (µSOP) Bulk 5.0 T00B LM75BIMMX-5+ 8 µMAX (µSOP) T&R 5.0 T00B OS SDA SCL A0 A1 A2 +VS = 3.0V to 5.5V SILICON BANDGAP TEMPERATURE SENSOR 9-BIT DELTA- SIGMA ADC CONFIGURATION REGISTER TOS SET POINT REGISTER THYST SET POINT REGISTER SET POINT COMPARATOR W/ HYSTERESIS 2-WIRE INTERFACE POINTER REGISTER 88 16 16 16 16 16 8 3 1 2 4 7 6 5 1 + 2 3 4 8 7 6 5 +VS A0 A1 A2 GND OS SCL SDA LM75 μMAX (μSOP), SO TOP VIEW Pin Configuration |
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