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
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 perating 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.
Please visit:English: http://www.sii-ic.com/en/Simplified
About Seiko Instruments Inc. (SII)http://www.sii.co.jp/en/
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