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| MITSUMI Remaining Battery Power Display MM1206 Remaining Battery Power Display Monolithic IC MM1206 Outline This IC detects battery voltage and displays the remaining power on an LED or LCD display. The appeal of battery-driven equipment lies in its portability, but when the battery runs down and the equipment does not function, customer complaints and breakdowns may result. This IC prevents such trouble before it starts. Features 1. There are three displays for remaining battery power : FULL / MIDDLE / EMPTY. 2. Nine patterns built in for detection voltage, linked to two manganese batteries. Standard setting : 2.5V, 2.25V 3. External parts held to a minimum Package SOP-8D (MM1206XF) VSOP-8A (MM1206AF) Detection Voltage Matrix Chart SW1 GND GND GND OPEN OPEN OPEN VCC VCC VCC SW2 GND OPEN VCC GND OPEN VCC GND OPEN VCC Detection Voltage 1 Detection Voltage 2 2.64V 2.62V 2.60V 2.52V 2.50V 2.48V 2.42V 2.40V 2.38V 2.35V 2.27V 2.18V 2.35V 2.25V 2.17V 2.30V 2.24V 2.15V *Voltage Accuracy1 : 100mV typ. Detection Voltage Detection Voltage 2 : 90mV typ. Absolute Maximum Ratings Item (Ta=25C) Rating -40~+125C -20~+70C 5V 300mW Storage temperature Operating temperature Input voltage Allowable loss MITSUMI Remaining Battery Power Display MM1206 Electrical Characteristics Item Current consumption 1 Detection voltage 1 Detection voltage 2 Detection voltage difference (Unless otherwise specified Ta=25C, SW1=SW2=open) Symbol ICC VTH1 VTH2 VT VTH/ + + T SW1=GND SW1=VCC SW2=GND SW2=VCC VCC=2.7V, VCE=0.5V VCC=2.38V, VCE=0.5V VCC=2.0V, VCE=0.5V VCC=2.7V, ISINK=1mA VCC=2.38V, ISINK=1mA VCC=2.0V, ISINK=1mA VCC=2.3V, VCE=1.5V VCC=2.7V, VCE=1.5V VCC=2.0V, VCE=1.5V VCC=2.5V, VCE=1.5V 70 -70 70 -70 5 5 5 VT1 VT2 IS1 IS2 IS3 VCE1 VCE2 VCE3 ILE1 ILE2 ILE2' ILE3 Measurement Conditions VCC=3.0V VCC=H VCC=H L L 2.4 2.16 210 Min. Typ. Max. Unit. 0.75 2.5 2.25 250 200 100 100 10 10 10 100 100 50 150 150 80 1 1 1 1 130 130 -100 -130 -100 -130 1.1 2.6 2.34 290 mA V V mV ppm/C mV mV mV mV mA mA mA mV mV mV A A A A VT=VTH1-VTH2 Detection voltage temperature factor Detection voltage I, Adjustment 1 Detection voltage I, Adjustment 2 Detection voltage II, Adjustment 1 Detection voltage II, Adjustment 2 Output sink current 1 Output sink current 2 Output sink current 3 Output saturation voltage 1 Output saturation voltage 2 Output saturation voltage 3 Output leak voltage 1 Output leak voltage 2 Output leak voltage 2 Output leak voltage 3 - VT1 - VT2 Block Diagram 2.50V LED1 LED2 LED3 L H H H L H 2.25V H H L Timing Chart VCC 2.50V 2.25V ON LED1 OFF ON LED2 OFF LED3 ON OFF MITSUMI Remaining Battery Power Display MM1206 Example of Application Circuit |
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