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| TK11070 NEGATIVE SLOPE TEMPERATURE SENSOR IC FEATURES s s s s s s Linear Output Voltage -8 mV/C Output Active High On/Off Control 2.7 to 10.0 V Supply Range Miniature Package (SOT-23-5) Minimum External Parts Count Low Power Consumption APPLICATIONS s s s s s s s s s Home and Industrial Thermostats Automotive Climate Control Battery Charger Temperature Monitor Notebook Computer Temperature Monitor Electronic Thermometers Fish Finder Water Temperature Industrial Process Controllers Home Appliance Temperature Control Liquid Crystal Panel Contrast Adjustment DESCRIPTION The TK11070 is a temperature sensor IC with a linear negative slope output of -8 mV/C over the range of -30 to + 105 C. Its wide operating voltage range of 2.7 to 10.0 V makes it suitable for a number of applications requiring accurate temperature control, such as electronic thermostats for climate control, refrigerators, and industrial process controls. The device is in the "on" state when the control pin is pulled to a logic high level. In the "off" state, the standby current is 1 A maximum. A typical application is to make a digital representation of temperature with an A/D converter, or to make a thermal detector with a comparator. The TK11070 has a compensation pin for a 0.1 F capacitor that ensures stability over the IC's operating temperature range. The TK11070 is available in a miniature SOT-23-5 surface mount package. BLOCK DIAGRAM TK11070 VCC 01 S VOUT HS CONTROL GND Note: Pin 2 must connect to GND VCC ORDERING INFORMATION VCC CONTROL TK11070M Tape/Reel Code ON/OFF CIRCUIT TEMPERATURE DETECTION CIRCUIT + VOUT - TAPE/REEL CODE TL: Tape Left GND HS January 1999 TOKO, Inc. Page 1 TK11070 ABSOLUTE MAXIMUM RATINGS Supply Voltage ......................................................... 12 V Operating Voltage ....................................... 2.7 to 10.0 V Power Dissipation (Note 1) ................................ 150 mW Junction Temperature ........................................... 150 C Storage Temperature Range ................... -55 to +150 C Operating Temperature Range .................-30 to +105 C Lead Soldering Temperature (10 s) ...................... 235 C TK11070 ELECTRICAL CHARACTERISTICS Test Conditions: VCC = 3.0 V, VCONT = 2.4 V, IOUT = 0 A, TA = 25 C, unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS TA = -30 C VOUT Output Voltage TA = -25 C TA = 85 C TC Line Reg Load Reg ICC IOUT ISTBY Temperature Coefficient Line Regulation Load Regulation Supply Current Output Current Standby Supply Current TA = 25 to 85 C VCC = 3 to 10 V IOUT = 0 A to 10 A VCONT = 2.4 V VOUT 20 mV VCONT 0.6 V -100 1.980 1.492 -8.5 -4 -8 MIN TYP 2.440 2.000 1.520 -8.0 2 0 75 2.020 1.548 -7.5 8 8 100 10 1 MAX UNITS V V V mV/ C mV mV A A A CONTROL TERMINAL SPECIFICATIONS ICONT VCONT(ON) VCONT(OFF) Control Current Control Voltage (ON) Control Voltage (OFF) VOUT = 1.98 to 2.02 V, Output ON VOUT < 0.1 V, Output OFF 2.0 1.8 GND 3.5 2.4 6. 0 VCC 0.6 A V V Note 1: Power dissipation is 150 mW when mounted as recommended. Derate at 1.2 mW/C for operation above 25 C. Page 2 January 1999 TOKO, Inc. TK11070 TEST CIRCUIT VCONT VCC ICONT Note: Output Voltage: VOUT(TYP) = 2.2 V + (-8 mV/C) x TA where TA is in C Linearity Error: VERR = VOUT - VOUT(TYP) TERR = VERR / (-8 mV/C) ICC CONTROL VOUT VCC COUT + 10 F GND HS 0.1 F IOUT VOUT VCC = 3 V, VCONT = 2.4 V, IOUT = 0 A, TA = 25 C, unless otherwise specified. OUTPUT VOLTAGE vs. TEMPERATURE 3.0 2.5 TYPICAL PERFORMANCE CHARACTERISTICS LINEARITY ERROR vs. TEMPERATURE 2 1 TERR ( C) 0 -1 -2 ICC (A) INPUT CURRENT vs. TEMPERATURE 100 80 60 40 20 VOUT (V) 2.0 1.5 1.0 -40 0 40 TA (C) INPUT CURRENT vs. INPUT VOLTAGE 100 80 80 120 -40 0 40 TA (C) 80 120 -40 0 40 TA (C) 80 120 LINE REGULATION 20 10 0 -10 -20 40 20 0 -20 -40 2 4 6 VCC (V) 8 10 -40 LOAD REGULATION VERR (mV) 60 40 20 2 4 6 VCC (V) 8 10 VERR (mV) ICC (A) -20 0 IOUT (A) 20 40 January 1999 TOKO, Inc. Page 3 TK11070 TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) VCC = 3 V, VCONT = 2.4 V, IOUT = 0 A, TA = 25 C, unless otherwise specified. INPUT CURRENT vs. CONTROL VOLTAGE 80 60 ICONT (A) ICC (A) OUTPUT VOLTAGE vs. CONTROL VOLTAGE 2.0 1.5 VOUT (V) 1.0 0.5 0 0 0.6 1.2 VCONT (V) CONTROL CURRENT vs. CONTROL VOLTAGE 4 3 VOUT (V) 2.0 1.5 1.0 0.5 0 CONTROL CURRENT vs. TEMPERATURE 4 3 2 1 0 40 20 0 1.8 2.4 0 0.6 1.2 VCONT (V) 1.8 2.4 -40 0 40 TA (C) 80 120 CONTROL VOLTAGE RESPONSE A 2.0 1.5 VOUT (V) 1.0 0.5 0 0 2 4 TIME (ms) 6 8 CONTROL VOLTAGE RESPONSE B ICONT (A) COUT = 0.1 F COUT = 0 F 2 1 0 0 0.6 1.2 VCONT (V) 1.8 2.4 0 10 20 TIME (ms) 30 40 RIPPLE REJECTION RATIO A 80 COUT = 0.1 F 60 60 40 20 0 80 RIPPLE REJECTION RATIO B TEMPERATURE RESPONSE A 2.2 COUT = 0 F 2.0 VOUT (V) RR (dB) RR (dB) 40 20 0 10 100 1k f (Hz) 10 k 100 k Vrr = 100 mVrms 1.8 1.6 1.4 25 TO 85 C Vrr = 100 mVrms 10 100 1k f (Hz) 10 k 100 k 0 20 40 TIME (s) 60 80 Page 4 January 1999 TOKO, Inc. TK11070 TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) VCC = 3 V, VCONT = 2.4 V, IOUT = 0 A, TA = 25 C, unless otherwise specified. TEMPERATURE RESPONSE B 2.6 2.4 VOUT (V) 2.2 2.0 1.8 0 20 40 TIME (s) 60 80 25 TO -30 C January 1999 TOKO, Inc. Page 5 TK11070 PACKAGE OUTLINE Marking Information Marking 70C SOT-26 (SOT-23-6) 0.7 TK11070 Marking 1.0 (0.6) 5 4 (0.6) 1.6 e 0.95 e' e 0.95 1.90 1 2 3 0.4 +0.15 - 0.05 e 0.95 e 0.95 Recommended Mount Pad 0.1 M 2.9 1.3 max +0.1 +0.15 - 0.05 (0.8) 1.1 e1 2.4 0 - 0.1 0.15 0.3 0.1 Dimensions are shown in millimeters Tolerance: x.x = 0.2 mm (unless otherwise specified) Toko America, Inc. Headquarters 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 TOKO AMERICA REGIONAL OFFICES Midwest Regional Office Toko America, Inc. 1250 Feehanville Drive Mount Prospect, IL 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 Western Regional Office Toko America, Inc. 2480 North First Street , Suite 260 San Jose, CA 95131 Tel: (408) 432-8281 Fax: (408) 943-9790 Eastern Regional Office Toko America, Inc. 107 Mill Plain Road Danbury, CT 06811 Tel: (203) 748-6871 Fax: (203) 797-1223 Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375 Visit our Internet site at http://www.tokoam.com The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc. Page 6 (c) 1999 Toko, Inc. All Rights Reserved IC-xxx-TK11070 0798O0.0K 0 - 15 2.8 max January 1999 TOKO, Inc. Printed in the USA |
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