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Seiko Instruments Launches New Automotive Voltage Detectors Capable of 125 Degree C Operation and 36V Input Voltage

Seiko Instruments Inc. (SII) launches new automotive voltage detectors, the S-19110 series, that are capable of 125 degree C operation and 36V input voltage while allowing for direct detection of 12V lead–acid battery voltage. Typical applications include ECUs for engines, transmissions and suspensions, Anti-lock Brake Systems, related Electric Vehicle equipment, and Hybrid Electric Vehicle and Plug-in Hybrid Electric Vehicle electronics.

Automotive ECU power supplies use 12V lead–acid batteries, and the power supply must be monitored to prevent ECU malfunctions caused by voltage fluctuations from the 12V lead–acid batteries. The new S-19110 Series’ high withstand voltage feature of 36V input and maximum rating of 45V, allows for direct voltage detection from 12V lead–acid batteries, while other detectors typically require an external resistor voltage divider to accomplish this. The S-19110 Series also reduces the current consumption from approximately 100uA from an external divider to under 2uA (Figure 1). In addition, unlike other typical voltage detectors, the S-19110 series positioned the ground pin away from the power supply pin, to help prevent the possibility of a short circuit between adjacent pins (Figure 2).

The S-19110 series was specifically developed to meet the demanding high quality requirements for automotive use, and will be AEC-Q100 certified. The S-19110 series has a wide operating temperature range from -40 to 125 degrees C, low current consumption of 600nA, and a voltage detection range of 3.0V to 10.0V available in 0.05V steps which can be set internally and requires no external parts. Two types are available for voltage detection: a VDD detection type and a SENSE detection type. The SENSE detection type has a SENSE pin in addition to a VDD pin, and the added SENSE pin allows stable output even when the SENSE pin voltage drops to 0V. The S-19110 series is offered in the lead (Pb)-free/halogen-free SOT-23-6 package.

Detailed information:
http://datasheet.sii-ic.com/en/voltage_detector/S19110xxxA_E.pdf
http://datasheet.sii-ic.com/en/voltage_detector/S19110xxxH_E.pdf

Please visit:
English: http://www.sii-ic.com/en/
Simplified Chinese: http://www.sii-ic.com/cn/

About Seiko Instruments Inc. (SII)
http://www.sii.co.jp/en/

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