TK11034 TEMPERATURE SENSOR IC FEATURES ■ ■ ■ ■ ■ ■ APPLICATIONS Linear Output Voltage 10 mV/°C Output Active High On/Off Control 2.4 to 8.0 V Supply Range Miniature Package (SOT-23L) Minimum External Parts Count Low Power Consumption ■ ■ ■ ■ ■ ■ ■ ■ 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 DESCRIPTION The TK11034 is a temperature sensor IC with a linear output of 10 mV/°C over the range of -30 to + 105 °C. Its wide operating voltage range of 2.4 to 8.0 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. TK11034 VCC VOUT GND GND 01 S NC VCONT 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. Note: Both GND pins must connect to GND The TK11034 has a compensation pin for a 0.1 µF capacitor that ensures stability over the IC's operating temperature range. The TK11034 is available in a miniature SOT-23L surface mount package. BLOCK DIAGRAM VCC ORDERING INFORMATION VCC VCONT TK11034M ON/OFF CIRCUIT + VOUT - Tape/Reel Code TAPE/REEL CODE TEMPERATURE DETECTION CIRCUIT GND GND TL: Tape Left January 1999 TOKO, Inc. Page 1 TK11034 ABSOLUTE MAXIMUM RATINGS Supply Voltage ......................................................... 12 V Operating Voltage ............................................ 2.4 to 8 V Power Dissipation (Note 1) ................................ 200 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 TK11034 ELECTRICAL CHARACTERISTICS Test Conditions: VCC = 3.0 V, VCONT = 2.4 V, IOUT = 0 µA, TA = 25 °C, unless otherwise specified. SYMBOL VOUT PARAMETER Output Voltage TEST CONDITIONS MIN TYP MAX UNITS TA = 25 ° C 965 995 1025 mV TA = 85 ° C 1573 1613 1653 mV TA = -30 ° C 428.5 mV TC Temperature Coefficient TA = 25 ° C to 85 ° C 9.5 10.3 11.1 mV/° C Line Reg Line Regulation VCC = 3 to 8 V -20 5 20 mV Load R eg Load Regulation IOUT = 0 to 400 µA 3 20 mV ICC Supply Current VCONT = 2.4 V 160 220 µA IOUT Output Current ∆VOUT ≤ 20 mV 400 µA ICC(STBY) Standby Supply Current VCONT ≤ 0.6 V 1 µA VCC V 0.6 V 7.5 µA CONTROL TERMINAL SPECIFICATIONS VCONT(ON) Control Voltage (ON) VOUT = 965 to 1025 mV, Output ON VCONT(OFF) Control Voltage (OFF) VOUT ≤ 0.1 V, Output OFF ICONT Control Current 1.8 2.4 GND 4.5 Note 1: Power dissipation is 200 mW when mounted as recommended. Derate at 1.6 mW/°C for operation above 25 °C. Page 2 January 1999 TOKO, Inc. TK11034 TEST CIRCUIT VCONT VCC ICONT VCONT ICC VOUT VCC COUT + GND GND IOUT VOUT 0.1 µF 10 µF TYPICAL PERFORMANCE CHARACTERISTICS VCC = 3 V, VCONT = 2.4 V, IOUT = 0 µA, TA = 25 °C, unless otherwise specified. 16 200 1.5 8 180 1.0 ICC (µA) 2.0 0 160 0.5 -8 140 0.0 -16 120 -40 0 40 80 120 -40 0 40 80 -40 120 40 80 120 TA (°C) TA (°C) INPUT CURRENT vs. INPUT VOLTAGE LINE REGULATION LOAD REGULATION 20 20 180 10 10 160 VERR (mV) 200 0 0 140 -10 -10 120 -20 -20 2 0 TA (°C) VERR (mV) ICC (µA) INPUT CURRENT vs. TEMPERATURE LINEARITY ERROR vs. TEMPERATURE VERR (mV) VOUT (V) OUTPUT VOLTAGE vs. TEMPERATURE 4 6 VCC (V) January 1999 TOKO, Inc. 8 10 2 4 6 VCC (V) 8 10 0 100 200 300 400 IOUT (µA) Page 3 TK11034 TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) VCC = 3 V, VCONT = 2.4 V, IOUT = 0 µA, TA = 25 °C, unless otherwise specified. INPUT CURRENT vs. CONTROL VOLTAGE CONTROL CURRENT vs. TEMPERATURE 200 6 1.2 150 5 0.8 ICONT (µA) 1.6 ICC (µA) VOUT (V) OUTPUT VOLTAGE vs. CONTROL VOLTAGE 100 4 0.4 50 3 0 0 2 0 0.6 1.2 1.8 0 2.4 0.6 1.2 1.8 2.4 -40 CONTROL VOLTAGE RESPONSE A CONTROL VOLTAGE RESPONSE B 1.6 1.6 COUT = 0 µF 1.2 4 VOUT (V) 1.2 6 VOUT (V) ICONT (µA) 120 CONTROL CURRENT vs. CONTROL VOLTAGE 0.8 0.8 2 0.4 0.4 0 0 0 0.6 1.2 1.8 0 2.4 1 2 3 0 4 1 2 3 4 VCONT (V) TIME (ms) TIME (ms) RIPPLE REJECTION RATIO A RIPPLE REJECTION RATIO B TEMPERATURE RESPONSE A 80 80 1.8 COUT = 0 µF COUT = 0.1 µF 60 40 40 20 20 Vrr = 100 mVrms 100 1k f (Hz) 10 k 100 k 1.4 25 TO 85 °C 1.2 Vrr = 100 mVrms 1.0 0 0 10 1.6 VOUT (V) RR (dB) 60 RR (dB) 80 TA (°C) COUT = 0.1 µF Page 4 40 VCONT (V) 8 0 0 VCONT (V) 10 100 1k f (Hz) 10 k 100 k 0 20 40 60 80 TIME (s) January 1999 TOKO, Inc. TK11034 TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) VCC = 3 V, VCONT = 2.4 V, IOUT = 0 µA, TA = 25 °C, unless otherwise specified. TEMPERATURE RESPONSE B 1.2 VOUT (V) 1.0 0.8 25 TO 85 °C 0.6 0.4 0 20 40 60 80 TIME (s) January 1999 TOKO, Inc. Page 5 TK11034 PACKAGE OUTLINE Marking Information SOT-23L (SOT-23L-6) TK11034 Marking 34C +0.15 - 0.05 0.4 6 5 0.1 M 0.6 4 e1 3.0 1.0 Marking Product Code Voltage Code 1 2 3 e 0.32 5 PL e 0.95 +0.15 - 0.05 0.1 e 0.95 M 0.95 3.5 e 0.95 Recommended Mount Pad +0.3 - 0.1 (3.4) 15 max 1.2 0.4 0.15 Dimensions are shown in millimeters Tolerance: x.x = ± 0.2 mm (unless otherwise specified) +0.15 - 0.05 0 - 0.1 1.4 max 0.3 2.2 + 0.3 3.3 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 © 1999 Toko, Inc. All Rights Reserved January 1999 TOKO, Inc. IC-xxx-TK11034 0798O0.0K Printed in the USA