MM1251

MITSUMI Remaining Battery Power Display MM1251, MM1252, MM1253 Remaining Battery Power Display Monolithic IC MM1251, MM1252, MM1253 Outline This IC detects battery voltage and displays the power remaining in the battery. Display of the battery's remaining power is an indispensable function for portable equipment. The use of this IC makes this display easily achievable. The usual method of display of remaining battery power, as in the MM1206, is three marks lighting up in sequence on an LED or other display. This IC, however, uses only one light to display the remaining battery power, resulting in lower cost. Features 1. 2. 3. 4. Adjustable flashing speed Adjustable detection voltage supports all settings Adjustable hysteresis voltage enables response to large ripple settings High precision voltage detection (MM1253) enables support of sets using nickel cadmium and other batteries 5. The LED can be lit up by the voltage from one battery (type of special built-in step-up circuit : rank B) Package SOP-8D (MM1251AF, MM1251BF, MM1252AF, MM1252BF, MM1253AF) Series Description Display Pattern Detection Precision Normal MM1251 MM1252 MM1253 Light Off Light On Light Off Low Power Flashing Flashing Flashing ±30mV ±30mV ±9mV Absolute Maximum Ratings Item Storage temperature Operating temperature Input voltage (Ta=25°C) Rating -40~+125 -20~+70 -0.3~+3 -0.3~+7 300 Unit °C °C V V mW Output Terminal Applied Voltage Allowable loss MITSUMI Remaining Battery Power Display MM1251, MM...