MITSMI MM1210XF Datasheet

MITSUMI

Remaining Battery Power Display MM1210

Remaining Battery Power Display

Monolithic IC MM1210 Series

Outline

This IC detects battery voltage and displays the remaining power in the battery using an LCD. Long life and
light weight are emphasized in the most recent portable equipment, which increasingly use nickel cadmium
and nickel hydrogen batteries. For these batteries, the discharge characteristics mean that extremely precise
detection of the remaining battery power is required.
This IC enables detection of this type through high precision voltage detection.

Features

1. Two built-in detection voltages 1.18V / 1.06V typ.

2. High precision detection voltages ±1% typ.

3. Low current consumption During detection ; 15 µA typ.
During waiting ; 15 µA typ.

4. Setting possible during non-induction

It is possible to set a time period for which detection is ignored, as for example when voltage drops due to
temporary heavy loads.

5. Ripple absorption pins

It is possible to check fluctuations in detection through continuous rippling.

6. Built-in hysteresis voltage

Package

SOP-8D (MM1210XF)

Absolute Maximum Ratings

Item Rating

Storage temperature

-

40~+125°C

Operating temperature

-

20~+70°C

Input voltage 5V

Output pin voltage 5V

Allowable loss 300mW

MITSUMI

Remaining Battery Power Display MM1210

Electrical Characteristics

(Unless otherwise specified Ta=25°C, VCC=1.5V, VCE=VCC)

Item Symbol Measurement Conditions Min. Typ. Max. Unit

Current consumption I

CC1VCC=1.5V 15 25 µA

Current consumption during waiting I

CC2VCC=1.3V, VCE=0.3V 1.5 2.5 µA

Detection voltage IV

TH1VCC=H L 1.169 1.180 1.191 V

Detection voltage II V

TH2VCC=H L 1.050 1.060 1.070 V

Detection voltage Difference V

T VT=VTH1

-

VTH2 100 120 140 mV

Detection voltage temperature factor ±200

PPM/°C

Hysteresis voltage VHYS 10 20 35 mV

Output sink current II

S1VCC=1.3V, VO1=0.3V 40 µA

Output sink current II I

S2VCC=1.3V, V02=0.3V 40 µA

Output saturation voltage IV

O1ISINK=30UA 150 250 mV

Output saturation voltage II V

O2ISINK=30UA 150 250 mV

Output leak voltage II

LE1VCC=1.0V, VO1=0.5V 1 µA

Output leak voltage II I

LE2VCC=1.0V, VO2=1.5V 1 µA

Power supply voltage operating limit V

OPL VCC=variable, VO < 0.4V 0.70 0.75 V

Input H voltage V

CEH

-

0.3 VCC 0.3 V

Input L current I

CEH VCC=1.5V, VCE=0V 100 300 500 nA

Input L voltage V

CEL

-

0.3 0 0.3 V

Threshold value IV

THT VCC=1.0V, VTC=variable 0.34 0.42 0.50 V

Threshold value II V

THT VCC=1.0V, VTC=variable 0.04 0.12 0.20 V

Discharge current I

DIS VCC=1.0V, VTC=0.5V 30 60 90 nA

Charge current I

CHA VCC=1.5V, VTC=0.5V 0.40 0.80 1.20 µA

Non-induction time td V

CC=1.5V, C=0.033UF 120 180 240 mS

L transmission delay time tdLH V

CC=L H, C=0.033UF 1.0 2.0 4.0 mS

Ripple absorption resistance RRIP

measure resistance between pins8-

6 70 100 130 kΩ

CE pin

TC pin

Note : VCC applied pulse conditions

td1 td2

1.25V 1.15V

GND 1.10V 1.00V

V

CC applied pulse