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S-5855A Dataheets PDF



Part Number S-5855A
Manufacturers Seiko Instruments
Logo Seiko Instruments
Description PWM OUTPUT TEMPERATURE SENSOR IC
Datasheet S-5855A DatasheetS-5855A Datasheet (PDF)

S-5855A Series www.sii-ic.com © Seiko Instruments Inc., 2010-2013 PWM OUTPUT TEMPERATURE SENSOR IC Rev.1.2_00 The S-5855A Series, developed by CMOS technology, is a 1-wire PWM output temperature sensor IC of low current consumption that itself changes the duty ratio according to temperature. The duty ratio decreases from 100% if exceeding the temperature set by user, and this decrease is linear against the temperature rise. The output form is selectable from CMOS output and Nch open-drain out.

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S-5855A Series www.sii-ic.com © Seiko Instruments Inc., 2010-2013 PWM OUTPUT TEMPERATURE SENSOR IC Rev.1.2_00 The S-5855A Series, developed by CMOS technology, is a 1-wire PWM output temperature sensor IC of low current consumption that itself changes the duty ratio according to temperature. The duty ratio decreases from 100% if exceeding the temperature set by user, and this decrease is linear against the temperature rise. The output form is selectable from CMOS output and Nch open-drain output. Its small packages SNT-4A and SOT-23-5 enable high-density mounting. „ Features • PWM output • Temperature accuracy • Duty ratio change-start temperature • Duty ratio temperature sensitivity • Low current consumption • Low power supply voltage • Wide range of operation temperature • Lead-free (Sn 100%), halogen-free : 1-wire PWM interface : ±3.0°C : Selectable from +40°C to +80°C in 10°C step : Selectable from −1 %/°C to −4 %/°C in 1 %/°C step : 50 μA typ. (Ta = +25°C) : 1.65 V to 5.5 V : Ta = −40°C to +125°C „ Application • Temperature compensation for LED instruments „ Packages • SNT-4A • SOT-23-5 Seiko Instruments Inc. 1 PWM OUTPUT TEMPERATURE SENSOR IC S-5855A Series „ Block Diagrams 1. CMOS output product VDD *1 VSS Temperature sensor Triangle wave generator + − CF CFREQ *1. Parasitic diode 2. Nch open-drain output product Figure 1 VDD *1 VSS Temperature sensor Triangle wave generator + − CF CFREQ *1. Parasitic diode Figure 2 2 Seiko Instruments Inc. Rev.1.2_00 DOUT DOUT Rev.1.2_00 „ Product Name Structure 1. Product name S-5855 A x x x − xxxx U PWM OUTPUT TEMPERATURE SENSOR IC S-5855A Series Environmental code U :Lead-free (Sn 100%), halogen-free Package name (abbreviation) and packing specifications*1 I4T1 :SNT-4A, Tape M5T1 :SOT-23-5, Tape Output form A :CMOS output B :Nch open-drain output Duty ratio temperature sensitivity A :−1 %/°C B :−2 %/°C C :−3 %/°C D :−4 %/°C Duty ratio change-start temperature A :+40°C B :+50°C C :+60°C D :+70°C E :+80°C *1. Refer to the tape drawing. 2. Packages Package Name SNT-4A SOT-23-5 Package PF004-A-P-SD MP005-A-P-SD Drawing Code Tape Reel PF004-A-C-SD PF004-A-R-SD MP005-A-C-SD MP005-A-R-SD Land PF004-A-L-SD − Seiko Instruments Inc. 3 PWM OUTPUT TEMPERATURE SENSOR IC S-5855A Series Rev.1.2_00 3. Product name list (1) SNT-4A Table 1 Product name S-5855AACA-I4T1U Duty ratio change-start temperature TS*1 [°C] +40 Duty ratio temperature sensitivity Ddt(s)*2 [%/°C] −3 Output form CMOS output TSP5*3 [°C] +45 TEM5*4 [°C] +60 S-5855AEAA-I4T1U +80 −1 CMOS output +85 +125 S-5855AECA-I4T1U +80 −3 CMOS output +85 +100 *1. TS : Duty ratio change-start temperature set by user *2. Ddt(s) : Duty ratio temperature sensitivity set by user *3. TSP5 : Temperature 5°C higher than duty ratio change-start temperature TS (Refer to Table 12 for details) *4. TEM5 : Higher temperature when measuring duty ratio temperature sensitivity (Refer to Table 12 for details) Remark Please contact our sales office for products other than those specified above. (2) SOT-23-5 Product name S-5855AAAA-M5T1U S-5855AAAB-M5T1U S-5855AADA-M5T1U Duty ratio change-start temperature TS*1 [°C] +40 +40 +40 Table 2 Duty ratio temperature sensitivity Ddt(s)*2 [%/°C] −1 −1 −4 Output form CMOS output Nch open-drain output CMOS output TSP5*3 [°C] +45 +45 +45 TEM5*4 [°C] +115 +115 +55 *1. TS : Duty ratio change-start temperature set by user *2. Ddt(s) : Duty ratio temperature sensitivity set by user *3. TSP5 : Temperature 5°C higher than duty ratio change-start temperature TS (Refer to Table 12 for details) *4. TEM5 : Higher temperature when measuring duty ratio temperature sensitivity (Refer to Table 12 for details) Remark Please contact our sales office for products other than those specified above. 4 Seiko Instruments Inc. Rev.1.2_00 „ Pin Configurations SNT-4A Top view 14 23 Figure 3 SOT-23-5 Top view 54 12 3 Figure 4 PWM OUTPUT TEMPERATURE SENSOR IC S-5855A Series Pin No. 1 2 3 4 Table 3 Symbol VSS CF VDD DOUT Pin Description GND pin Connection pin for frequency control capacitor Power supply pin Output pin Table 4 Pin No. Symbol Pin Description 1 CF Connection pin for frequency control capacitor 2 VSS GND pin 3 NC*1 No connection 4 DOUT Output pin 5 VDD Power supply pin *1. The NC pin is electrically open. The NC pin can be connected to VDD pin or VSS pin. Seiko Instruments Inc. 5 PWM OUTPUT TEMPERATURE SENSOR IC S-5855A Series Rev.1.2_00 „ Absolute Maximum Ratings Table 5 (Ta = +25°C, VSS = 0 V, unless otherwise specified) Item Symbol Absolute Maximum Rating Unit Power supply voltage Output voltage CMOS output product Nch open-drain output product CF voltage Output current Power dissipation SNT-4A SOT-23-5 VDD VOUT VCF IOUT PD VSS −0.3 to VSS +7.0 VSS −0.3 to VDD +0.3 VSS −0.3 to VSS +7.0 VSS −0.3 to VDD +0.3 −13 to +13 300*1 600*1 V V V V mA mW mW Operating ambient temperature Topr −40 to +125 °C S.


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