Press Release

21 February 2003

 

New Detector IC S1F77600 –
Breakthrough in Dry Cell Battery Leakage Detectors
Guaranteed Performance at 0 Volts

 

Singapore, 21 February 2003 - Seiko Epson Corporation has developed and released the S1F77600, a detector IC ideal for the prevention of dry battery cell leakage. The sample price is 100 yen. Initial production is set at 100K/month with sequential increases planned.

For the application of this detector Epson is targeting a wide variety of products, concentrating on small devices that use dry cell batteries, including remote controllers for household appliances, clocks and watches, and portable game devices.

Battery leakage has become an important issue with products that run on dry cell batteries. To date, voltage detection LSIs (or “detector”) have typically been used for preventing battery leakage. However, such detectors become unstable at low voltages, making them an unreliable solution. This has created a demand for a more complete solution in place of the current detector.

In response, Epson has developed the new S1F77600, a detector with low current requirements that is guaranteed to work at low voltages. This detector prevents leaks by using a high impedance output signal when voltage dips below the detection level, thereby stopping any further electric discharge from the dry cell batteries.

* This IC itself does not detect actual dry battery cell leakage.

Product characteristics

    • Voltage drop detection for dry cell 2-cell series power supply
    • Low voltage operation, guaranteed output at current of as low as 0V
    • Highly accurate, low consumption current
    • Highly precision voltage detection renders adjustments unnecessary
    • Internally equipped with: standard voltage circuit, comparator, voltage detection resistance, histeresis circuit, output assurance circuit (output control Hi-Z), etc.
    • General product specifications are listed separately.

General Specifications

Item

Specification

Operation voltage

0.8 – 5.5 V

Detection voltage

1.2 – 1.6 V (mask option)

Detection voltage accuracy

± 3.5 % (+ 25°C)

Hysteresis width

0.2 – 1.0 V (mask option)

Current consumption

5.0 µA Max.

Output ports

P-ch/N-ch open drain (mask option)

Package type

SOT89 – 3 pin


I/O characteristics of P-ch open drain

        

EPSON SINGAPORE PTE LTD is a wholly owned subsidiary of SEIKO EPSON CORPORATION, Japan. As the Regional Headquarters of SEIKO EPSON CORPORATION, EPSON SINGAPORE PTE LTD handles sales and marketing of information-related equipment such as printers, scanners and projectors, electronic devices including semiconductors, LCDs and crystal devices, and system devices in Singapore, Malaysia, Thailand, Indonesia, Philippines, India, Australia and New Zealand.

More information about EPSON SINGAPORE PTE LTD is available at http://www.epson.com.sg/html/electronic_devices.html

Further Information:

        EPSON SINGAPORE PTE LTD
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