SM6611 series NIPPON PRECISION CIRCUITS INC. Miniature High-Precision Temperature Switch IC OVERVIEW ry 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 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 ■ 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 ■ ■ pre lim ina ■ ■ ■ ■ APPLICATIONS Motherboard overheating protection PINOUT PACKAGE DIMENSIONS (Top view) (Unit: mm) 2.9 ± 0.2 T1 2 5 VSS OUT 3 4 T3 0.95 + 0.1 0.125 − 0.05 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 0.2 min. ■ 0.1 + 0.1 0.40 − 0.05 0.12 M ORDERING INFORMATION SM6611×AH series Device Output switch temperature SM6611AAH 45°C SM6611×BH series Output configuration Device Output switch temperature SM6611ABH 45°C SM6611BAH 55°C SM6611BBH 55°C SM6611CAH 65°C SM6611CBH 65°C SM6611DAH 75°C SM6611DBH 75°C SM6611EAH 85°C SM6611EBH 85°C SM6611FAH 95°C SM6611FBH 95°C Open-drain activeLOW output Output configuration CMOS active-HIGH output NIPPON PRECISION CIRCUITS—1 SM6611 series BLOCK DIAGRAM VDD Output inverting temperature detect TEST2 TEST3 ina ry TEST1 Output buffer Comparator Reference temperature sensor OUT Hysteresis control VSS PIN DESCRIPTION 1 2 3 4 5 I/O Description VDD – Supply voltage 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. 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. T3 – Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation. VSS – Ground T2 – Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation. pre 6 Name lim Number NIPPON PRECISION CIRCUITS—2 SM6611 series SPECIFICATIONS Absolute Maximum Ratings VSS = 0V Supply voltage range Power dissipation Storage temperature range Symbol Rating Unit VDD −0.3 to 15 V PD 2.5 mW TSTG −40 to 125 °C Rating Unit ina ry Parameter Recommended Operating Conditions VSS = 0V Parameter Symbol Supply voltage range Operating temperature range DC Characteristics VDD 2.4 to 12 V TOPR −20 to 100 °C VDD = 2.4 to 12V, VSS = 0V, Ta = −20 to 100°C unless otherwise noted Rating Parameter Symbol Condition Unit min VDD LOW-level output voltage – 12 V – 30 100 µA ISINK = 1mA, VDD > 2.4V – – 0.3 V ISINK = 3mA, VDD > 4V – – 0.4 V HIGH-level output voltage VDD − 1.0 – – V IDD VOL VOH max 2.4 lim Supply voltage Current consumption typ CMOS output (SM6611×BH), ISOURCE = 0.5mA, VDD > 2.4V VOMAX Open-drain output (SM6611×AH) – – 12 V ILEAK VDD = 2.4V, VOUT = 12V, (SM6611×AH) −1 – +1 µA Output switch temperature accuracy ∆TTH 45 to 95°C −3 – +3 °C Hysteresis temperature THYST – 10 – °C pre Open-drain output maximum voltage Open-drain output leakage current NIPPON PRECISION CIRCUITS—3 pre lim ina ry 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. 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: [email protected] NP0022AE 2001.02 NIPPON PRECISION CIRCUITS—4