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Part: MM1305
Category:
Power Management
-> Battery Management
-> Battery Protection
Description: Monolithic Ic; Remaining Battery Power Display
Company: Mitsumi
Datasheet: Download MM1305 datasheet File size : 99 kB
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Datasheet text preview:
MITSUMI
Remaining Battery Power Display MM1305
Remaining Battery Power Display
Monolithic IC MM1305
Outline
This IC detects battery voltage and displays the power remaining in the battery. Portable equipment is becoming more and more popular, and one standard function of this type of equipment is remaining battery power display. This IC has four threshold voltages built in. Since their respective detection circuits share the reference voltage on one chip, the detection voltage for each lags in the same direction. Thus, there is much smaller error as compared to the reciprocal error resulting from combining single circuits. Also, the stepped display of remaining battery power as in nickel cadmium, nickel hydrogen and lithium ion batteries is enabled through super high precision voltage detection of ±1%.
Features
1. A separate line-up of detection voltages for alkaline magnesium and nickel cadmium and nickel hydrogen batteries. Alkaline magnesium : 1.350V /1.285V /1.200V /1.100V Nickel cadmium, nickel hydrogen : 1.275V /1.245V /1.205V /1.100V 2. Super high precision detection voltage : ±1% typ. 3. Low current consumption : Waiting : 1.5µA Detection : 12µA 4. Ripple absorption pin Enables continuous ripple absorption and suppresses detection errors. 5. Built-in hysteresis voltage
Package
VSOP-8A (MM1305XW, MM1305AW, MM1305BW)
Absolute Maximum Ratings
Item Storage temperature Operating temperature Input voltage Output pin voltage Allowable loss Specification -40~+125 -20~+70 5 5 300 Unit °C °C V V mW
MITSUMI
Remaining Battery Power Display MM1305
Electrical Characteristics
Item Current consumption
(Unless otherwise specified Ta=25°C, VCC=1.5V) Measurement Conditions VCC=1.3V, CE pin=L 1.330 Rank A VCC=H L 1.270 1.185 1.089 1.262 Rank X VCC=H L 1.232 1.193 1.089 VTH1=VTH1-VTH4 Rank A VTH2=VTH2-VTH4 VTH3=VTH3-VTH4 VTH1=VTH1-VTH2 Rank X VTH2=VTH2-VTH3 VTH3=VTH2-VTH4 230 160 85 20 30 135 10 VCC=1.3V, Output saturation voltage=0.3V 40 150 ISINK=30µA 150 150 150 250 250 250 250 1 VCC=1.0V, Output saturation voltage=1.5V 1 1 1 0.70 VCC-0.3 CE pin=0V measure resistance between pins 8pin-6pin 100 -0.3 70 VCC 300 0 100 0.75 VCC+0.3 500 0.3 130 V V nA V k µA mV Min. Typ. 12.0 1.5 1.350 1.285 1.200 1.100 1.275 1.245 1.205 1.100 250 185 100 30 40 145 ±200 20 35 Max. 18.0 2.5 1.370 1.300 1.215 1.111 1.288 1.258 1.217 1.111 270 200 115 40 50 155 ppm/°C mV µA mV mV V V Unit µA µA
Current consumption during waiting Detection voltage 1 2 3 4 1 2 3 4 Detection voltage Difference 1 2 3 1 2 3 Detection voltage temperature factor Hysteresis voltage Output sink current Output saturation voltage 1 2 3 4 Output leak voltage 1 2 3 4 Power supply voltage operating limit Input H voltage CEpin L current L voltage Ripple absorption resistance
MITSUMI
Remaining Battery Power Display MM1305
Block Diagram, Example of Application Circuit
Timing Chart
Hysteresis Hysteresis Hysteresis VCC VTH1 VTH2 VTH3 VTH4
Output VCC OUT 1 OUT 2 OUT 3 L L L L VTH1 TH2 TH3 TH4 H L L L H H L L H H H L H H H H
VCC Hysteresis
OUT1
OUT 4
OUT2
CE pin H
OUT3
Operation Waiting
L
OUT4
Note : Please connect the CE pin to Vcc when not using.
VCC CE GND
Others parts begin by mm
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