Ordering number : ENA0728A
CMOS IC
LV5122T
Overview
2-Cell Lithium-Ion Secondary Battery
Protection IC
The LV5122T is a protection IC for 2-cell lithium-ion secondary batteries.
Features
•
Monitoring function for each cell:
•
High detection voltage accuracy:
•
Hysteresis cancel function:
•
Discharge current monitoring function:
•
Low current consumption:
•
0V cell charging function:
Detects overcharge and over-discharge conditions and controls the
charging and discharging operation of each cell.
Over-charge detection accuracy
±25mV
Over-discharge detection accuracy ±100mV
The hysteresis of over-discharge detection voltage is canceled by sensing
the connection of a load after overcharging has been detected.
Detects over-currents and load shorting, and an excessive
discharge current is controlled.
Normal operation mode typ. 6.0µA
Stand by mode
max. 0.2µA
Charging is enabled even when the cell voltage is 0V by giving a
potential difference between the VDD pin and V- pin.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer
'
s products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
'
s products or
equipment.
52307 MS IM / 32207 MS IM 20061130-S00001 No.A0728-1/10
LV5122T
Specifications
Absolute Maximum Ratings
at Ta = 25°C
Parameter
Power supply voltage
Input voltage
Charger minus voltage
Output voltage
Cout pin voltage
Dout pin voltage
Allowable power dissipation
Operating ambient temperature
Storage temperature
Vcout
Vdout
Pd max
Topr
Tstg
Independent IC
VDD-28 to VDD+0.3
VSS-0.3 to VDD+0.3
170
-30 to +80
-40 to +125
V
V
mW
°C
°C
Symbol
VDD
V-
Conditions
Ratings
-0.3 to +12
VDD-28 to VDD+0.3
Unit
V
V
Electrical Characteristics 1
at Ta = 25°C, unless especially specified.
Parameter
Operation input voltage
0V cell charging minimum operation
voltage
Over-charge detection voltage
Over-charge reset voltage
Over-charge detection delay time
Over-charge reset delay time
Over-discharge detection voltage
Over-discharge reset hysteresis voltage
Over-discharge detection delay time
Over-discharge reset delay time
Over-current detection voltage
Over-current reset hysteresis voltage
Over-current detection delay time
Over-current reset delay time
Short circuit detection voltage
Short circuit detection delay time
Standby reset voltage
Reset resistance (connected to VDD)
Reset resistance (connected to VSS)
Cout Nch ON voltage
Cout Pch ON voltage
Dout Nch ON voltage
Dout Pch ON voltage
Vc input current
Current drain
Standby current
Vd1
Vh1
td1
tr1
Vd2
Vh2
td2
tr2
Vd3
Vh3
td3
tr3
Vd4
td4
Vstb
RDD
RSS
VOL1
VOH1
VOL2
VOH2
Ivc
IDD
Istb
IOL=50µA, VDD-Vc=4.4V, Vc-VSS=4.4V
IOL=50µA, VDD-Vc=3.9V, Vc-VSS=3.9V
IOL=50µA, VDD-Vc=Vd2(min),
Vc-VSS=Vd2(min)
IOL=50µA, VDD-Vc=3.9V, Vc-VSS=3.9V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=2.2V, Vc-VSS=3.5V
VDD-0.5
0.0
6.0
1.0
13.0
0.2
V
µA
µA
µA
VDD-0.5
0.5
VDD-Vc=3.5V→2.2V, Vc-VSS=3.5V
VDD-Vc=2.2V→3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
Between VDD-Vc=2.0V, Vc-VSS=2.0V
(V-)-VSS
VDD-Vc=3.5V→4.5V, Vc-VSS=3.5V
VDD-Vc=4.5V→3.5V, Vc-VSS=3.5V
4.325
4.100
0.5
20.0
2.20
10.0
50
0.5
0.28
5.0
2.5
0.5
1.0
0.2
VDD
×0.4
100
0.5
4.350
4.150
1.0
40.0
2.30
20.0
100
1.0
0.30
10.0
5.0
1.0
1.3
0.5
VDD
×0.5
200
1.0
4.375
4.200
1.5
60.0
2.40
40.0
150
1.5
0.32
20.0
7.5
1.5
1.6
0.8
VDD
×0.6
400
1.5
0.5
V
V
s
ms
V
mV
ms
ms
V
mV
ms
ms
V
ms
V
kΩ
MΩ
V
V
V
Symbol
Vcell
Vmin
Conditions
Between VDD and VSS
Between VDD-VSS =0 and VDD-V-
Ratings
min
1.5
typ
max
10
1.5
Unit
V
V
No.A0728-2/10
LV5122T
Electrical Characteristics 2
at Ta = -20 to 70°C, unless especially specified.
Parameter
Operation input voltage
0V cell charging minimum operation
voltage
Over-charge detection voltage
Over-charge reset voltage
Over-charge detection delay time
Over-charge reset delay time
Over-discharge detection voltage
Over-discharge reset hysteresis voltage
Over-discharge detection delay time
Over-discharge reset delay time
Over-current detection voltage
Over-current reset hysteresis voltage
Over-current detection delay time
Over-current reset delay time
Short circuit detection voltage
Short circuit detection delay time
Standby reset voltage
Reset resistance (connected to VDD)
Reset resistance (connected to VSS)
Cout Nch ON voltage
Cout Pch ON voltage
Dout Nch ON voltage
Dout Pch ON voltage
Vc input current
Current drain
Standby current
Vd1
Vh1
td1
tr1
Vd2
Vh2
td2
tr2
Vd3
Vh3
td3
tr3
Vd4
td4
Vstb
RDD
RSS
VOL1
VOH1
VOL2
VOH2
Ivc
IDD
Istb
IOL=50µA, VDD-Vc=4.4V, Vc-VSS=4.4V
IOL=50µA, VDD-Vc=3.9V, Vc-VSS=3.9V
IOL=50µA, VDD-Vc=Vd2(min),
Vc-VSS=Vd2(min)
IOL=50µA, VDD-Vc=3.9V, Vc-VSS=3.9V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=2.2V, Vc-VSS=3.5V
VDD-0.5
0.0
6.0
1.0
16.9
0.2
V
µA
µA
µA
VDD-0.5
0.5
VDD-Vc=3.5V→2.2V, Vc-VSS=3.5V
VDD-Vc=2.2V→3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
Between VDD-Vc=2.0V, Vc-VSS=2.0V
(V-)-VSS
VDD-Vc=3.5V→4.5V, Vc-VSS=3.5V
VDD-Vc=4.5V→3.5V, Vc-VSS=3.5V
4.305
4.080
0.350
14.0
2.18
8.0
35
0.35
0.271
3.5
1.75
0.35
0.9
0.14
VDD
×0.4
70
0.35
4.350
4.150
1.000
40.0
2.30
20.0
100
1.0
0.300
10.0
5.00
1.00
1.3
0.5
VDD
×0.5
200
1.0
4.390
4.215
1.950
78.0
2.42
42.0
195
1.95
0.329
23.0
9.75
1.95
1.7
1.04
VDD
×0.6
520
1.95
0.5
V
V
s
ms
V
mV
ms
ms
V
mV
ms
ms
V
ms
V
kΩ
MΩ
V
V
V
Symbol
Vcell
Vmin
Conditions
Between VDD and VSS
Between VDD-VSS =0 and VDD-V-
Ratings
min
1.65
typ
max
10
1.65
Unit
V
V
The Ratings of the table above is a design guarantees and are not measured.
No.A0728-3/10
LV5122T
Electrical Characteristics 3
at Ta = -30 to 85°C, unless especially specified.
Parameter
Operation input voltage
0V cell charging minimum operation
voltage
Over-charge detection voltage
Over-charge reset voltage
Over-charge detection delay time
Over-charge reset delay time
Over-discharge detection voltage
Over-discharge reset hysteresis voltage
Over-discharge detection delay time
Over-discharge reset delay time
Over-current detection voltage
Over-current reset hysteresis voltage
Over-current detection delay time
Over-current reset delay time
Short circuit detection voltage
Short circuit detection delay time
Standby reset voltage
Reset resistance (connected to VDD)
Reset resistance (connected to VSS)
Cout Nch ON voltage
Cout Pch ON voltage
Dout Nch ON voltage
Dout Pch ON voltage
Vc input current
Current drain
Standby current
Vd1
Vh1
td1
tr1
Vd2
Vh2
td2
tr2
Vd3
Vh3
td3
tr3
Vd4
td4
Vstb
RDD
RSS
VOL1
VOH1
VOL2
VOH2
Ivc
IDD
Istb
IOL=50µA, VDD-Vc=4.4V, Vc-VSS=4.4V
IOL=50µA, VDD-Vc=3.9V, Vc-VSS=3.9V
IOL=50µA, VDD-Vc=Vd2(min),
Vc-VSS=Vd2(min)
IOL=50µA, VDD-Vc=3.9V, Vc-VSS=3.9V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=2.2V, Vc-VSS=3.5V
VDD-0.5
0.0
6.0
1.0
18.2
0.2
V
µA
µA
µA
VDD-0.5
0.5
VDD-Vc=3.5V→2.2V, Vc-VSS=3.5V
VDD-Vc=2.2V→3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
VDD-Vc=3.5V, Vc-VSS=3.5V
Between VDD-Vc=2.0V, Vc-VSS=2.0V
(V-)-VSS
VDD-Vc=3.5V→4.5V, Vc-VSS=3.5V
VDD-Vc=4.5V→3.5V, Vc-VSS=3.5V
4.295
4.070
0.3
12.0
2.17
6.0
30
0.3
0.267
2.5
1.5
0.3
0.8
0.12
VDD
×0.4
60
0.3
4.350
4.150
1.0
40.0
2.30
20.0
100
1.0
0.300
10.0
5.0
1.0
1.3
0.5
VDD
×0.5
200
1.0
4.395
4.220
2.1
84.0
2.43
42.0
210
2.1
0.333
240
10.5
2.1
1.8
1.12
VDD
×0.6
560
2.1
0.5
V
V
s
ms
V
mV
ms
ms
V
mV
ms
ms
V
ms
V
kΩ
MΩ
V
V
V
Symbol
Vcell
Vmin
Conditions
Between VDD and VSS
Between VDD-VSS =0 and VDD-V-
Ratings
min
1.73
typ
max
10
1.73
Unit
V
V
The Ratings of the table above is a design guarantees and are not measured.
No.A0728-4/10
LV5122T
Package Dimensions
unit : mm (typ)
3245B
200
Pd max -- Ta
Independent IC
3.0
8
Allowable power dissipation, Pd max -- mW
170
150
3.0
4.9
100
0.5
1
(0.53)
2
0.65
0.25
0.125
68
50
(0.85)
1.1MAX
0
-30 -20
0
20
40
60
80
100
Ambient temperature, Ta --
°C
0.08
SANYO : MSOP8(150mil)
Pin Assignment
Dout
8
T
7
Vc Sense
6
5
2
VDD Cout
1
3
V-
4
VSS
Top view
Pin Functions
Pin No.
1
2
3
4
5
6
7
8
VDD
Cout
V-
VSS
Sense
Vc
T
Dout
Symbol
VDD pin
Overcharge detection output pin
Charger minus voltage input pin
VSS pin
Sense pin
Intermediate voltage input pin
Pin to shorten detection time (open under normal condition)
Overdischarge detection output pin
Description
No.A0728-5/10
