FM50 FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

  • Analog output: 10 mV/°C
  • Range: -40 to 125°C range:
  • Accuracy: ±1°C at 25°C
  • Supply Current, 170 µA max.
  • Output Drive, 25 µA
  • Self-heating < 0.1°C
  • Operating V oltage: +2.4V to +6V

Applications

  • Mobile Phones
  • Computers
  • Battery Management
  • Office Equipment
  • H V A C
  • Power Supply Modules
  • Disk Drives
  • Automotive

Description

As a precision CMOS temperature sensor, the FM50 is cost-effective for accurate low-power temperature monitor- ing applications. Output voltage versus temperature is extremely linear. With no load, the supply current is typically 130µA. For normal operation, the load on V OUT should be 100K Ω or less. In a typical application, a remotely mounted FM50 is monitored by a microcontroller with an analog A/D converter input. Alternatively, the FM50 can drive a comparator with a high impedance input. Accuracy is typically ± 0.5°C at room temperature; and better than ±2°C from 0 to 75°C. Package is a 3-pin SOT-23 Thermal Response FM50 Analog Temperature Sensor -50 -40 -25 25 50 75 100 125 100 VOUT (mV) Temperature ( C) Temperature ( C) = VOUT - 500 mV 10 mV/ C 500 1750 750 FM50 Output Voltage vs. Temperature

FM50 PRODUCT SPECIFICATION REV. 1.0.8 9/12/02 Pin Assignments Pin Descriptions Pin Name Pin No. Type Function V OUT

2 Analog Output

Temperature Sense. Analog output voltage indicating temperature. V OUT = 500+10T(°C) mV V DD 1P o w e r Supply Voltage. 2.4 to 6.0V GND 3 Power Ground. FM50 VOUTVDD GND

PRODUCT SPECIFICATION FM50 REV. 1.0.8 9/12/02 Absolute Maximum Ratings Notes: 1. Absolute maximum ratings are limits beyond which operation may cause permanent damage to the device. These are stress ratings only; functional operation at or above these limits is not implied. 2. Operating ratings are conditions for which the device is intended to be functional without specific guaranteed performance limits. For guaranteed specifications and test conditions refer to Electrical Characteristics. 3. Human Body Model: 100pF capacitor discharged through a 1.5kOhm resistor into each pin. Machine Model: 200pF capacitor discharged directly into each pin.

Electrical Characteristics

Limits apply for -40°C T A +125°C and V DD = +5.0V unless otherwise noted. Notes: 4. These specifications are guaranteed only for the test conditions listed. 5. Accuracy (expressed in °C) = Difference between calculated output voltage and measured output voltage. Calculated output voltage = 10mV/ °C multiplied by the device ’s case temperature at specified conditions of temperature, voltage and power supply, added to 500mV. 6. Non-linearity is defined as the deviation of the output-voltage-versus-temperature curve from the best-fit straight line, over the device’s rated temperature range. Parameter Min. Typ. Max. Units Supply Voltage +7 V Output Voltage V DD + 0.5 V Output Current 10 µA Operating Temperature Range -50 +150 °C Storage Temperature Range -60 +150 °C Lead Soldering Temperature 220 °C ESD Human Body Model Machine Model 2000 250 V V Parameter Symbol Conditions Min Typ Max Units Transfer Characteristic Sensitivity A OUT 9.7 10 10.3 mV/ °C Output at 25°C 740 750 760 mV Accuracy T A = +25°C T A = -40°C (T MIN T A = +125°C (T MAX -3.5 ±0.5 +3.5 Temperature Range -40 +125 °C Non-Linearity -0.8 +0.8 °C Output Output Voltage Range 100 1500 mV Output Current Source I ONSN Sensing 25 µA I ONSG Surge mA Output Current Sink I OL 50 µA Output resistance 100k Ω load at 25°C 1 10 k Ω Load regulation mV/mA Power Supply Voltage V DD 2.4 6.0 V Quiescent Current I S No output load 170 µA Package Thermal Resistance 260 °C/W

Figure 4. Recommended Electrical Connections the FM50 should be Kelvin connected as shown in Figure 4. minutes, temperature can be calculated. surface temperature and the air temperature. that moisture cannot corrode the FM50 or its connections.

Figure 6. Thermostat/Fan Controller

FM50 PRODUCT SPECIFICATION 9/12/02 0.0m 003 Stock#DS30000050

2002 Fairchild Semiconductor Corporation

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. Mechanical Dimensions inches (millimeters) unless otherwise noted

Ordering Information

Part Number Package Temperature Range Shipping FM50S3X 3-Pin SOT -23 -40 °C to +125°C Tape and Reel, 3000 units/reel PIN 1 0.0005 (0.013) 0.004 (0.100) 0.015 (0.370) 0.020 (0.510) 0.083 (2.100) 0.104 (2.640) 0.047 (1.20) 0.055 (1.40) 0.035 (0.890) 0.041 (1.030) SEATING PLANE 10° 0°0.015 (0.085) 0.007 (0.180) 0.0217 REF (0.55) REF 0.035 (0.890) 0.044 (1.120) 0.110 (2.800) 0.120 (3.040) 0.070 (1.780) 0.081 (2.050) 0.017 (0.450) 0.024 (0.600)