SM6611

SM6611 series NIPPON PRECISION CIRCUITS INC. Miniature High-Precision Temperature Switch IC OVERVIEW The SM6611 series are temperature switch ICs that change state (invert) when the chip temperature exceeds a preset temperature. The switches are designed with temperature hysteresis to prevent unstable output when the temperature is in the vicinity of the preset temperature. There are 6 output switching temperatures in the series, available in 2 output configurations, making the SM6611 series devices ideal for a wide range of applications. FEATURES I I I I pre lim ina I I 2.4 to 12.0V operating supply voltage −20 to 100°C operating temperature range ±3°C temperature accuracy 45 to 95°C output switch temperatures in 10°C steps 10°C temperature hysteresis I I 30µA (typ) low current consumption Output configuration • SM6611×AH open-drain active-LOW output • SM6611×BH CMOS active-HIGH output 6-pin SOT23-6W package APPLICATIONS I Motherboard overheating protection I Battery-pack temperature protection PINOUT (Top view) PACKAGE DIMENSIONS (Unit: mm) VDD T1 1 2 3 6 5 4 T2 2.8 ± 0.2 + 0.2 1.8 − 0.1 VSS T3 OUT 0.95 0.95 1.1 ± 0.1 0.8 ± 0.1 0.1 + 0.1 0.40 − 0.05 0.12 M ORDERING INFORMATION SM6611×AH series Device Output switch temperature 45°C 55°C SM6611×BH series Device Output configuration Output switch temperature 45°C 55°C 65°C 0 to 0.1 Output configuration SM6611AAH SM6611ABH SM6611BAH SM6611BBH SM6611CAH SM6611DAH SM6611EAH SM6611FAH 65°C 75°C Open-drain activeLOW output SM6611CBH SM6611DBH SM6611EBH SM6611FBH 75°C 85°C 95°C CMOS active-HIGH output 85°C 95°C NIPPON PRECISION CIRCUITS—1 0.2 min. ry 2.9 ± 0.2 1.9 ± 0.2 + 0.1 0.125 − 0.05 SM6611 series BLOCK DIAGRAM VDD TEST1 TEST2 TEST3 Output inverting temperature detect Reference temperature sensor VSS PIN DESCRIPTION Number 1 2 Name VDD T1 I/O – 3 4 5 6 pre NIPPON PRECISION CIRCUITS—2 lim Supply voltage – OUT O T3 – VSS T2 – Ground – ina ry Comparator Output buffer OUT Hysteresis control Description Test pin 1. This pin is used for test purposes by NPC. It has a built-in pull-up resistor. Leave open for normal operation. Output. SM6611×AH: Open-drain output. A pull-up resistor of 100kΩ should be connected to this pin. Goes LOW when the switch preset temperature is exceeded. SM6611×BH: CMOS output. Goes LOW to HIGH when the switch preset temperature is exceeded. Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation. Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation. SM6611 series SPECIFICATIONS Absolute Maximum Ratings VSS = 0V Parameter Supply voltage range Power dissipation Storage temperature range Symbol VDD PD Rating −0.3 to 15 2.5 Unit V Recommended Operating Conditions VSS = 0V Parameter Supply voltage range Operating temperature range DC Characteristics VDD = 2.4 to 12V, VSS = 0V, Ta = −20 to 100°C unless otherwise noted Parameter Supply voltage Current consumption Symbol VDD IDD Condition ina ry TSTG −40 to 125 Symbol VDD Rating 2.4 to 12 TOPR −20 to 100 Rating typ – min 2.4 – – – VDD − 1.0 – −1 −3 – max 12 30 – – – – – – 10 100 0.3 0.4 – 12 +1 +3 – mW °C Unit V °C Unit V lim VOL ISINK = 1mA, VDD > 2.4V ISINK = 3mA, VDD > 4V VOH VOMAX ILEAK ∆TTH 45 to 95°C THYST µA V V V V µA °C °C LOW-level output voltage HIGH-level output voltage CMOS output (SM6611×BH), ISOURCE = 0.5mA, VDD > 2.4V Open-drain output (SM6611×AH) VDD = 2.4V, VOUT = 12V, (SM6611×AH) Open-drain output maximum voltage Open-drain output leakage current Output switch temperature accuracy Hysteresis temperature pre NIPPON PRECISION CIRCUITS—3 SM6611 series NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification. The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter, including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies. NIPPON PRECISION CIRCUITS INC. 4-3, Fukuzumi 2-chome Koto-ku, Tokyo 135-8430, Japan Telephone: +81-3-3642-6661 Facsimile: +81-3-3642-6698 http://www.npc.co.jp/ Email: sales@npc.co.jp NP0022AE 2001.02 pre NIPPON PRECISION CIRCUITS INC. lim NIPPON PRECISION CIRCUITS—4 ina ry