MITSUMI
IC for Control of Lithium-ion Betteries Charging MM1438
Absolute Maximum Ratings
Item
Storage temperature
Operating temperature
Power supply voltage
CFL pin input voltage
SW input voltage
Allowable loss
(Ta=25°C)
Symbol
T
STG
T
OPR
V
CC
max.
V
CEL
max.
V
SW
Pd
Ratings
-40~+125
-20~+70
-0.3~+18
-0.3~+13
-0.3~V
CC
+0.3
300
Unit
°C
°C
V
V
V
mW
Recommended Operating Conditions
Item
Operating temperature
Charging control operating voltage
Symbol
T
OPR
V
OPR
Ratings
-20~+70
2.5~+17
Unit
°C
V
Note: Operating voltage minimum value is during rated current control.
Electrical Characteristics
(Except where noted otherwise, Ta=25°C, V
CC
=5V, SW3 : A, SW6 : A, SW7 : A)
Max. Unit
400
µA
10
µA
4.150 V
4.155 V
110 mV
7.0
1
30
2.0
V
CC
+0.3
2.3
30
2.0
V
CC
+0.3
0.5
0.4
µA
µA
µA
V
V
V
µA
V
V
µA
V
Item
Symbol
Measurement conditions
Min. Typ.
Consumption current 1
I
CC1
VSW1=VSW2=0V (Charge : ON)
250
Consumption current 2
I
CC2
VSW1=VSW2=V
CC
(Charge : OFF)
2
Ta=25°C
4.100 4.125
Output voltage 1
V
O1
Output voltage 2
V
O2
Ta=0~50°C
4.095 4.125
Current limit
V
CL
90
100
Inflow current between
3.0
5.0
I
CEL1
CEL-CS during operation
Leak current between CEL-CS
I
CEL2
V
CC
=0V or OPEN
0.01
SW1 input current
I
SW1
20
SW1 input voltage L
V
L1
Charge : ON
-0.3
SW1 input voltage H
V
H1
Charge : OFF
V
CC
-0.1
Low voltage detection voltage
L
V
2.0 2.15
SW2 input current
I
SW2
20
SW2 input current L
V
L2
Low voltage detection circuit: ON
-0.3
SW2 input current H
V
H2
Low voltage detection circuit: OFF
V
CC
-1.0
Low voltage detection
I
LV
output leak current
Low voltage detection
I
SINK
=1mA
0.2
V
LV
output saturation voltage
EXT pin inflow current
I
EXT
10
20
EXT pin output voltage
V
EXT
For no load
0.3
Note 1: Please insert a capacitor of several µF between power supply and ground when using.
Note 2: Be sure that CS pin potential does not fall below -0.5V.
mA
V
CC
-0.3 V
Note 3: If the IC is damaged and control is no longer possible, its safety can not be guaranteed. Please
protect with something other than this IC.
MITSUMI [ MITSUMI ELECTRONICS, CORP. ]
