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MM1248 반도체 회로 부품 판매점

Control of Lithium Ion Battery Charging and Discharging



MITSUMI 로고
MITSUMI
MM1248 데이터시트, 핀배열, 회로
MITSUMI
Control of Lithium Ion Battery Charging and Discharging MM1248
Control of Lithium Ion Battery Charging and Discharging
Monolithic IC MM1248
Outline
This IC was developed for use in controlling charging and discharging of lithium ion batteries (battery modules
with three cells connected in series). In charging control, the voltage of the battery module as a whole is
controlled in constant-voltage control. Discharge control and monitoring of overvoltage rely on monitoring of
the voltages of individual cells.
Features
1. Charging control voltage
VBATH=12.465V±1.5% (Ta=-20°C~70°C)
2. Overcharge detection voltage
VCELL=4.335V±1.5% (Ta=-20°C~70°C)
3. Internal circuit for setting dead time (for overvoltage detection, discharge control)
4. Low consumption current on overdischarge IBATH3=1µA typ.
5. High-precision internal overvoltage detection startup circuit (cell voltage 4.2V or higher at end of charging)
Package
SOP-16B (MM1248XF)
Absolute Maximun Ratings (Except where noted otherwise, Ta=25°C)
Item
Storage temperature
Operating temperature
Input voltage
Charge voltage
Power supply voltage
Voltage applied to OV2 pin
Allowable loss
Symbol
TSTG
TOPR
VIN max.
VBAT max.
VCC max.
VO2 max.
Pd
Ratings
-40~+125
-20~+70
18
15
15
10
350
Units
°C
°C
V
V
V
V
mW


MM1248 데이터시트, 핀배열, 회로
MITSUMI
Control of Lithium Ion Battery Charging and Discharging MM1248
Electrical Characteristics (Except where noted otherwise, Ta=25°C, VIN=15 V, CON=VIN)
Item
Consumption current 1(pin VIN)
Consumption current (pin VCC) 1
Consumption current (pin VCC) 2
Consumption current (pin VCC) 3
Consumption current (pin VCC) 4
Consumption current (pin VCC) 5
Consumption current (pin BATH) 1
Consumption current (pin BATH) 2
Consumption current (pin BATH) 3
Charging control voltage
Overcharge detection voltage
Symbol
VIN
ICC1
ICC2
ICC3
ICC4
ICC5
IBATH1
IBATH2
IBATH3
VBATH
VCELLU
Overcharge reset voltage
VCELLO
Sensing voltage margin 1
Sensing voltage margin 2
Overvoltage sensing operation voltage
Overvoltage sensing hysteresis voltage
Overdischarge detection voltage
Discharge resume voltage
Overdischarge sensing hysteresis voltage
Pin 11 input current 1
Pin 11 input current 2
Pin 13 input current 1
Pin 13 input current 2
Pin 14 input current
CON pin threshold voltage
CON pin input current
CON pin leakage current
CHG pin pull-up resistance
CHG pin sync current
CHG pin output voltage L
CHG pin output voltage H
DCHG pin source current
DCHG pin sync current
DCHG pin output voltage L
DCHG pin output voltage H
OV2 pin sync current
OV1 pin source current
OV1 pin pulldown resistance
CCC pin charge current
CCC pin threshold voltage
CCC initialization delay time
CDC pin charge current
CDC pin threshold voltage
Overvoltage sensing dead time
Overdischarge sensing dead time
Overdischarge reset dead time
Battery voltage monitor output
voltage ratio
Battery voltage monitor output current
VUO1
VUO2
VALM
VALM
VCELLS
VCELLD
VCSD
I11
I11A
I13
I13A
I14
VTHCON
IINCON
ILCON
RCHG
ISCGH
VTHCHL
VTHCHH
ISODCH
ISIDCH
VTHDCL
VTHDCH
ISOOV2
ISOOV1
ROV1
ICCC
VTHCCC
TINT
ICDC
VTHCDC
TDCCC
TDCDC1
TDCDC2
VBMON
ILMON
Measurement conditions
VIN=15V, CON=0V
VCELL=4.4V
VCELL=4.2V, CON=0V
VCELL=4.2V, CON=VIN
VCELL=4.0V
VCELL=2.4V
VCELL=4.4V
VCELL=4.0V
VCELL=2.4V
Ta=-20~70°C
Ta=-20~70°C
VBATH/3-VCELLU
VBATH-VCELLU 3
VCELLD-VCELLS
VCELL=4.0V
VCELL=4.4V
VCELL=4.0V
VCELL=4.4V
VCELL=4.0V
VIN-CON=1.8V
VIN-CON=0.4V
Resistance across pins VIN and CHG
VBATT<12V
VIN-CHG, ICGH=20µA
VIN-CHG, ICGH=20µA
BATH-DCHG, IS=20µA
DCHG-GND, IS=-20µA
VCELL=4.4V, CCC=3.0V
CCC=0V 5V
CCC=0.068µF
VCELL=2.8V, CCC=3.0V
CCC=0V 5V
CCC=0.068µF
CDC=0.1µF
CDC=0.1µF
(BATH-GND) ÷3
VBATT
Min.
12.270
4.270
VCELLU
-60mV
100
300
4.05
50
2.31
2.49
175
100
0.7
100
0.7
7.7
VIN-1.8
14
100
6.2
20
20
100
100
35
150
4.10
260
4.20
0.5
0.5
0.5
-1.0
50
Typ. Max. Units
250 350 µA
2.1 2.6 mA
1.5 2.0 mA
1.0 1.3 mA
50 100 µA
0.1 µA
5.0 10.0 µA
2.5 5.0 µA
1.0 2.0 µA
12.465 12.670 V
4.335 4.400 V
VCELLU VCELLU
-45mV -30mV
V
mV
mV
4.20 4.35 V
90 130 mV
2.40 2.49 V
2.65 2.81 V
250 325 mV
200 300 nA
1.0 1.3 µA
200 300 nA
1.0 1.3 µA
10.0 14.3 µA
VIN-0.4 V
100 µA
1.0 µA
20 26 k
µA
V
0.4 V
µA
µA
1.0 V
0.8 V
µA
µA
50 65 k
220 290 nA
4.30 4.50 V
10 mS
380 500 nA
4.40 4.60 VC
1.0 1.5 S
1.0 1.5 S
1.0 1.5 S
0 1.0 %
µA




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