mm1438 Mitsumi Electronics, Corp., mm1438 Datasheet - Page 3

• Manufacturer Part Number: mm1438
• Description: Lithium-ion Battery Charge Control 1 Cell
• Manufacturer: Mitsumi Electronics, Corp.

MITSUMI
Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
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.
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.
Leak current between CEL-CS
Low voltage detection voltage
CEL-CS during operation
output saturation voltage
Consumption current 1
Consumption current 2
Inflow current between
EXT pin output voltage
Low voltage detection
Low voltage detection
EXT pin inflow current
SW1 input voltage H
SW2 input voltage H
SW1 input voltage L
SW2 input voltage L
output leak current
SW1 input current
SW2 input current
Output voltage 1
Output voltage 2
Note: Operating voltage minimum value is during rated current control.
Current limit
Charging control operating voltage
Item
Operating temperature
Operating temperature
Power supply voltage
CFL pin input voltage
Storage temperature
SW input voltage
Allowable loss
Item
Item
Symbol
I
I
V
I
I
I
I
I
V
V
V
V
V
V
V
V
CEL1
CEL2
I
SW1
L
SW2
CC1
CC2
EXT
EXT
LV
(Except where noted otherwise, Ta=25°C, V
O1
O2
CL
H1
H2
LV
L1
L2
V
(Ta=25°C)
Low voltage detection circuit: OFF
VSW1=VSW2=V
Low voltage detection circuit: ON
VSW1=VSW2=0V (Charge : ON)
V
V
Symbol
Symbol
Measurement conditions
CEL
CC
V
T
T
T
V
Pd
OPR
OPR
STG
OPR
max.
SW
max.
V
CC
Charge : OFF
Lithium-Ion Battery Charge Control (1 cell) MM1438
Charge : ON
For no load
Ta=0~50°C
I
=0V or OPEN
Ta=25°C
SINK
CC
=1mA
(Charge : OFF)
-0.3~V
CC
-40~+125
-0.3~+18
-0.3~+13
Ratings
Ratings
-20~+70
-20~+70
2.5~+17
=5V, SW3 : A, SW6 : A, SW7 : A) Models listed MM1438A
300
CC
+0.3
V
V
4.100 4.125 4.150
4.095 4.125 4.155
Min. Typ. Max. Unit
-0.3
-0.3
CC
CC
3.0
2.0
0.3
90
10
-1.0
-1.0
Unit
Unit
mW
°C
°C
°C
V
V
V
V
0.01
2.15
250
100
5.0
0.2
20
20
20
2
V
V
V
400
110
CC
CC
CC
7.0
2.0
2.3
2.0
0.5
0.4
10
30
30
1
-0.3
+0.3
+0.3
mV
mA
µA
µA
µA
µA
µA
µA
µA
V
V
V
V
V
V
V
V
V