
MITSUMI
IC for Control of Lithium-ion Batteries Charging MM1433
Measurement Procedures
(Except where noted otherwise, Ta = 25°C, V
CC
=5V, V1=V2=0V, V13=4.2V,
SW12, 17, 20, 22, 24:A, I15=0mA Timers are not in time up state.)
Item
Measurement Procedures
Consumption current
Reference voltage
V1 = 1.2V. Measure A18 current value I
CC
.
Measure T5 potential V
REF
.
Gradually lower Vcc from 5V; V
CC
-
potential is V
ADPL
when T20 potential drops
below 0.5V.
Gradually lower V
CC
-
from 2V. V
CC
-
potential is V
ADPL2
when T20 potential
goes over V
CC
-
0.5V. V
ADPLW
= V
ADLP2
-
V
ADPL
Gradually increase Vcc from 5V. Vcc potential is VADPH when T20 potential
drops below 0.5V.
Gradually lower V
CC
from 7V. V
CC
potential is V
ADPH2
when T20 potential
goes over V
CC
-
0.5V. V
ADPHW
= V
ADPH
-
V
ADPH2
ADP detection voltage L
ADP detection voltage L
Hysteresis voltage width
ADP detection voltage H
ADP detection voltage H
Hysteresis voltage width
Impedance for
ADP Ldetection output
BAT pin leak current
V
CC
= 7V, SW20: B, V20
-
0.5V, impedance between T20-GND is Z
ADPL
.
V
CC
= 0V, SW17: B, V17 = 0V. Measure A13 current value I
BAT
.
Gradually lower V13 from 3.5V. T13 potential is V
BAT
when T15
-
T13 potential
difference falls to less than 20mV.
V13 = 3.5V, SW17: B. Gradually raise V17 from 0V. T17 potential is V
CNT
when
A17 current value 20mA.
Measure A1 current value I
SW
.
V13 = 3.5V. Raise V1 from 0V to 1.2V. CHGSW: ON when A13 is more than
500mA. CHGSW: OFF when A13 is less than 1mA. Measure V
SW
.
Measure A2 current value I
RE
.
V13 = 3.5V. Raise V2 from 0V to 1.2V. Charging control circuit: ON when A13 is more
than 500mA. Charging control circuit: OFF when A13 is less than 1mA. Measure V
RE
.
V13 = 3.5V. T15-T13 potential difference is V
L1
.
V13 = 3.5V. T15-T13 potential difference is V
L2
.
SW24: B, I15 = 100mA. Gradually reduce I15 current value after reset. T15
-
T13 potential difference is V
F
when T21 potential goes under 0.5V.
Gradually raise V13 from 0V. T13 potential is V
LV
when A13 current value goes
over 50mA.
Gradually lower V13 from 2.5V. T13 potential is V
LV2
when A13 current value
goes over 10mA. V
LVW
= V
LV
-
V
LV2
Gradually raise V13 from 2.5V. T13 potential is V
P
when A13 current value
goes over 500mA.
Gradually lower V13 from 3.5V. T13 potential is V
P2
when A13 current value
goes under 150mA. V
PW
= V
P
= V
P2
Wait about 1S at V13 = 4.2V; in full charge detection state, gradually lower V13
potential to lower T21 potential to under 0.5V. T13 potential is V
R
when T21
potential is more than V
CC
-
0.5V.
Gradually raise V13 from 4V. T13 potential is V
OV
when T22 potential starts to
repeat HI/LOW.
V13 = 3.5V, SW12: B. Gradually raise V12 from 0.6V. T12 potential is V
TH
when A13 current value goes under 1mA.
V13 = 3.5V, SW12: B. Gradually raise V12 from 0V. T12 potential is V
TL1
when
A13 current value goes over 500mA.
V13 = 3.5V, SW12: B. Gradually raise V12 from 0.6V. T12 potential is V
TL2
when A13 current value goes over 1mA.
SW12: B, V12 = 0V. Measure A12 current value IT.
V13 = 3.5V, SW22: B. Gradually raise V22 from 0V. T22 potential is V
LEDR
when A22 current value is 10mA.
Wait about 1S at V13 = 4.2V; in full charge detection state, make T21 potential
0.5V or less. Next at SW21: B, gradually raise V21 from 0V. T21 potential is
V
LEDG
when A21 current value is 10mA.
BAT pin output voltage
CNT pin output voltage
CHGSW pin input current
CHGSW pin input voltage H
CHGSW pin input voltage L
RESET pin input current
RESET pin input voltage H
RESET pin input voltage L
Current limit 1
Current limit 2
Full charge detection
Low voltage detection voltage
Low voltage detection voltage
Hysteresis voltage width
Pre-charge detection voltage
Pre-charge detection voltage
Hysteresis voltage width
Re-charge detection voltage
Overvoltage detection voltage
Battery temperature
detection voltage H
Battery temperature
detection voltage L1
Battery temperature
detection voltage L2
TDET input bias current
LED R pin output voltage
LED G pin output voltage