SM6611 series 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 ■ ■ ■ ■ ■ 2.4 to 10.0V operating supply voltage −40 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 ■ 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 ■ Battery-pack temperature protection ■ ■ APPLICATIONS ■ Motherboard overheating protection PINOUT PACKAGE DIMENSIONS (Top view) (Unit: mm) 2.9 ± 0.2 + 0.1 0.125 − 0.05 2 5 VSS OUT 3 4 T3 0.95 0.2 min. T1 0.95 0 to 0.1 T2 2.8 ± 0.2 6 1.1 ± 0.1 1 0.8 ± 0.1 VDD + 0.2 1.8 − 0.1 1.9 ± 0.2 0.1 + 0.1 0.40 − 0.05 0.12 M ORDERING INFORMATION SM6611×AH series Device Output switch temperature SM6611AAH*1 SM6611BAH*1 SM6611CAH*1 65°C SM6611DAH*1 75°C SM6611EAH SM6611FAH*1 SM6611×BH series Device Output switch temperature 45°C SM6611ABH 45°C 55°C SM6611BBH 55°C SM6611CBH 65°C SM6611DBH 75°C 85°C SM6611EBH 85°C 95°C SM6611FBH 95°C Output configuration Open-drain active-LOW output Output configuration CMOS active-HIGH output *1. These versions are produced after receiving a purchase order. Please ask our Sales & Marketing section for further details. SEIKO NPC CORPORATION —1 SM6611 series BLOCK DIAGRAM VDD TEST1 TEST2 TEST3 Output inverting temperature detect Output buffer Comparator OUT Reference temperature sensor Hysteresis control VSS PIN DESCRIPTION Number Name I/O Description 1 VDD – Supply voltage 2 T1 – 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. 3 OUT O 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. 4 T3 – Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation. 5 VSS – Ground 6 T2 – Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation. SEIKO NPC CORPORATION —2 SM6611 series SPECIFICATIONS Absolute Maximum Ratings VSS = 0V Parameter Symbol Rating Supply voltage range VDD −0.3 to 15 V Power dissipation PD 10 mW TSTG −55 to 125 °C Rating Unit Storage temperature range Unit Recommended Operating Conditions VSS = 0V Parameter Symbol Supply voltage range VDD 2.4 to 10 V Operating temperature range TOPR −40 to 100 °C DC Characteristics VDD = 2.4 to 10V, VSS = 0V, Ta = −40 to 100°C unless otherwise noted. Rating Parameter Symbol Condition Unit min typ max Supply voltage VDD 2.4 – 10 V Current consumption IDD – 30 100 µA – 0.3 V VOL ISINK = 1mA, VDD > 2.4V – LOW-level output voltage ISINK = 3mA, VDD > 4V – – 0.4 V VDD − 1.0 – – V HIGH-level output voltage VOH CMOS output (SM6611×BH), ISOURCE = 0.5mA, VDD > 2.4V Open-drain output maximum voltage VOMAX Open-drain output (SM6611×AH) – – 10 V Open-drain output leakage current ILEAK VDD = 2.4V, VOUT = 10V, (SM6611×AH) −1 – +1 µA Output switch temperature accuracy ∆TTH 45 to 95°C −3 – +3 °C Hysteresis temperature THYST – 10 – °C SEIKO NPC CORPORATION —3 SM6611 series Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such use from SEIKO NPC CORPORATION (hereinafter “NPC”). Customers shall be solely responsible for, and indemnify and hold NPC free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. SEIKO NPC CORPORATION 1-9-9, Hatchobori, Chuo-ku, Tokyo 104-0032, Japan Telephone: +81-3-5541-6501 Facsimile: +81-3-5541-6510 http://www.npc.co.jp/ Email: [email protected] NC0022DE 2007.10 SEIKO NPC CORPORATION —4