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 鹵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 : 鹵1% typ.
3. Low current consumption : Waiting : 1.5碌A(chǔ)
Detection : 12碌A(chǔ)
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
擄C
擄C
V
V
mW
1
2
3
