R5422N112C [RICOH]
Li-lon BATTERY PROTECTOR; 的锂离子电池保护
| 型号： | R5422N112C |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Li-lon BATTERY PROTECTOR |
| 文件： | 总9页 (文件大小：87K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
’99.12.9
PRELIMINARY
Li-Ion BATTERY PROTECTOR
R5422NxxxC/xxxE series
n OUTLINE
The R5422NxxxC/E Series are protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion (Li+) excess load
current, further include a short circuit protector for preventing large external short circuit current.
Each of these ICs is composed of three voltage detectors, a reference unit, a delay circuit, a short circuit protector, and a logic
circuit. When charging voltage crosses the detector threshold from a low value to a value higher than VDET1, the output of COUT
pin, the output of over-charge detector/VD1, switches to low level, charger's negative pin level after the delay time by setting an
external capacitor. After detecting over-charge the VD1 can be reset and the output of COUT becomes high when the VDD voltage
is coming down to a level lower than “VREL1”, or when a kind of loading is connected to VDD after a charger is disconnected from
the battery pack while the VDD level is in between “VDET1” and “VREL1” in the R5422NxxxC/E version.
The output of DOUT pin, the output of over-discharge detector/VD2, switches to low level after internally fixed delay time passed,
when discharging voltage crosses the detector threshold from a high value to a value lower than VDET2.
After R5422NxxxC/E Series detect the over-discharge voltage, connect a charger to the battery pack, and when the battery
supply voltage becomes higher than the over-discharge detector threshold, VD2 is released and the voltage of DOUT becomes
“H” level.
An excess load current can be sensed and cut off after internally fixed delay time passed through the built in excess current
detector, VD3, with DOUT being enabled to low level. Once after detecting excess current, the VD3 is released and DOUT level
switches to high by detaching a battery pack from a load system.
Further, short circuit protector makes DOUT level to low immediately with external short circuit current and removing external
short circuit leads DOUT level to high. After detecting over-discharge, supply current will be kept extremely low by halt some
internal circuits operation. Output type of COUT and DOUT is CMOS. 6-pin, SOT23-6 is available.
n FEATURES
l
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High Voltage Process Technology
Low supply current....................................................Supply current
Standby current (detecting over-discharge)
Absolute Maximum Rating of Voltage level between VDD-V- 28v
Typ. 6.0µA
Typ. 0.1µA
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High accuracy detector threshold ..............................Over-charge detector (Topt=25°C)
(Topt=0 to 50°C)
±25mV
±30 mV
Over-discharge detector
Excess current detector
±2.5%
±20mV
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Variety of detector threshold .....................................Over-charge detector threshold
Over-discharge detector threshold
4.0V - 4.5V step of 0.01V
2.0V - 3.0V step of 0.01V
0.05V - 0.4V step of 0.01V
l
l
l
l
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Built-in protection circuit ..........................................Excess current protection
Output delay of over-charge......................................Time delay at C=0.01µF tVDET1=75ms, tVREL1=20ms
Output delay of over-discharge .................................Internally fixed TYP. 17ms
Output delay of excess-current
2 Over-current modes
Internally fixed TYP. 10ms
Excess Current Mode / Short Mode
Charging Available / non-available at 0V Cell
Acceptable of 0V Cell
C version
Non-acceptable of 0V Cell E version
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Small package............................................................SOT-23-6 / 6-pin
n APPLICATIONS
l
Li+ one-cell protector for battery pack
Rev. 0.01
- 1 -
n BLOCK DIAGRAM
Ct
VDD
5
4
Level
Shift
VD1
Short
Detector
Delay
VD2
Delay
VD3
6
1
3
2
Vss
Dout
Cout
V-
n SELECTION GUIDE
In the R5422Nxxxx Series, three of the input threshold for over-charge, over-discharge and excess current detectors can be
designated.
Part Number is designated as follows:
R5422N XXXX-XX ¬Part Number
• • •
a
b c
Code
Description
Serial Number for the R5422N Series designating input threshold for over-charge, over-discharge
and excess current detectors as well as hysteresis range for over-charge detector.
Designation of version symbols
a
b
c
Taping Type: TR (refer to Taping Specification)
Rev. 0.01
- 2 -
n PIN CONFIGURATION
6
5
4
(mark side)
1
2
3
n PIN DESCRIPTION
Pin No.
Symbol
Pin description
Output of over-discharge
detection, CMOS output
Pin for charger negative input
Output of over-charge
detection, CMOS output
Pin for external capacitor
setting output delay of VD1
Power supply(Substrate voltage
level of the IC)
1
2
3
DOUT
V-
COUT
4
Ct
5
6
VDD
VSS
Ground(Ground pin of the IC)
Rev.0.01
- 3 -
n ABSOLUTE MAXIMUM RATINGS
VSS=0V
Unit
V
Symbol
VDD
Item
Ratings
-0.3 to 12
Supply voltage
Input Voltage
V - pin
V-
VCt
VDD -28 to VDD +0.3
VSS -0.3 to VDD +0.3
V
V
Ct pin
Output voltage
COUT pin
DOUT pin
Power dissipation
Operating temperature
range
VCOUT
VDOUT
PD
VDD -28 to VDD +0.3
VSS -0.3 to VDD +0.3
150
V
V
mW
Topt
Tstg
-40 to 85
°C
°C
Storage temperature range -55 to 125
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are threshold limit values that must not be exceeded ever for an instant under any conditions.
Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute maximum
ratings may cause degradation or permanent damage to the device. These are stress ratings only and do not necessarily imply
functional operation below these limits.
Rev. 0.01
- 4 -
n ELECTRICAL CHARACTERISTIC
l
R5422N111C
Symbol
Unless otherwise provided, Topt=25°C
Item
Conditions
MIN.
TYP.
MAX.
Unit
VDD1
Operating input voltage
Voltage defined as VDD - VSS
1.5
10
V
Minimum operating Voltage Voltage defined as VDD - V- ,
Vst
1.2
V
for 0V charging
VDD - VSS=0V
VDET1
Over-charge threshold
R1=330W(Topt=25°C)
4.225
4.220
4.250
4.250
4.275
4.280
V
V
R1=330W (Topt=0 to 50°C)*Note
Release voltage for over-
charge detection
Output delay of over-
Charge
Output delay of Release
from Over-charge
VREL1
tVDET1
tVREL1
VDET2
tVDET2
VDET3
4.000
60
4.050
75
4.100
90
V
ms
ms
V
C=0.01µF, VDD=3.6V to 4.3V
C=0.01µF, VDD=4.3V to 4.1V
15
20
25
Detect falling edge of supply
voltage
Over-discharge threshold
2.437
12
2.500
17
2.563
22
Output delay of over-
Discharge
VDD=3.6V to 2.4V
ms
V
Detect rising edge of 'V-' pin
voltage
Excess current threshold
0.18
7
0.20
10
0.22
13
Output delay of excess
Current
Short protection voltage
Output Delay of Short
protection
tVDET3
Vshort
tshort
ms
V
VDD=3.0V
VDD=3.0V
VDD-1.2 VDD-0.9 VDD-0.6
5
50
µs
Reset resistance for Excess
current protection
Rshort
VDD=3.6V, V- =1.0V
37
75
113
0.5
kW
Vol1
Voh1
Vol2
Voh2
IDD
Nch ON voltage of COUT
Pch ON voltage of COUT
Nch ON voltage of DOUT
Pch ON voltage of DOUT
Supply current
Iol=40µA, VDD=4.4V
Ioh=-40µA, VDD=3.9V
Iol=40µA, VDD=2.2V
Ioh=-40µA, VDD=3.9V
VDD=3.9V, V- =0V
VDD=2.0V
0.3
3.75
0.2
3.7
6.0
V
V
V
V
µA
µA
3.4
3.4
0.5
10.0
0.1
Istandby
Standby current
*Note: Considering of variation in process parameters, we compensate for this characteristic related to temperature by laser-trim,
however, this specification is guaranteed by design, not production tested.
Rev.0.01
- 5 -
l
R5422N112C
Symbol
Unless otherwise provided, Topt=25°C
Item
Conditions
MIN.
TYP.
MAX.
Unit
VDD1
Operating input voltage
Voltage defined as VDD - VSS
1.5
10
V
Minimum operating Voltage Voltage defined as VDD - V- ,
Vst
1.2
V
for 0V charging
VDD - VSS=0V
R1=330W(Topt=25°C)
4.325
4.320
4.350
4.350
4.375
4.380
V
V
VDET1
Over-charge threshold
R1=330W (Topt=0 to 50°C)*Note
Release voltage for over-
charge detection
Output delay of over-
Charge
Output delay of Release
from Over-charge
VREL1
tVDET1
tVREL1
VDET2
tVDET2
VDET3
4.100
61
4.150
77
4.200
93
V
ms
ms
V
C=0.01µF, VDD=3.6V to 4.4V
C=0.01µF, VDD=4.4V to 4.1V
15
20
25
Detect falling edge of supply
Voltage
Over-discharge threshold
2.437
12
2.500
17
2.563
22
Output delay of over-
Discharge
VDD=3.6V to 2.4V
ms
V
Detect rising edge of 'V-' pin
Voltage
Excess current threshold
0.18
7
0.20
10
0.22
13
Output delay of excess
Current
Short protection voltage
Output Delay of Short
protection
tVDET3
Vshort
tshort
ms
V
VDD=3.0V
VDD=3.0V
VDD-1.2 VDD-0.9 VDD-0.6
5
50
µs
Reset resistance for excess
current protection
Rshort
VDD=3.6V, V- =1.0V
37
75
113
0.5
kW
Vol1
Voh1
Vol2
Voh2
IDD
Nch ON voltage of COUT
Pch ON voltage of COUT
Nch ON voltage of DOUT
Pch ON voltage of DOUT
Supply current
Iol=40µA, VDD=4.4V
Ioh=-40µA, VDD=3.9V
Iol=40µA, VDD=2.2V
Ioh=-40µA, VDD=3.9V
VDD=3.9V,V- =0V
VDD=2.0V
0.3
3.75
0.2
3.7
6.0
V
V
V
V
µA
µA
3.40
3.4
0.5
10.0
0.1
Istandby
Standby current
*Note: Considering of variation in process parameters, we compensate for this characteristic related to temperature by laser-trim,
however this specification is guaranteed by design, not production tested.
Rev. 0.01
- 6 -
l
R5422N111E
Symbol
Unless otherwise provided, Topt=25°C
Item
Conditions
Voltage defined as VDD - VSS
Voltage defined as VDD - VSS ,
VDD – V-=4V
MIN.
TYP.
MAX.
Unit
VDD1
Operating input voltage
Maximum Voltage for
disable of 0V charging
1.5
10
V
Vnochg
VDET1
0.5
0.8
V
R1=330W(Topt=25°C)
4.225
4.220
4.250
4.250
4.275
4.280
V
V
Over-charge threshold
R1=330W (Topt=0 to 50°C)*Note
Release voltage for over-
charge detection
Output delay of over-
Charge
Output delay of Release
from Over-charge
VREL1
tVDET1
tVREL1
VDET2
tVDET2
VDET3
4.000
60
4.050
75
4.100
90
V
ms
ms
V
C=0.01µF, VDD=3.6V to 4.3V
C=0.01µF, VDD=4.3V to 4.1V
15
20
25
Detect falling edge of supply
Voltage
Over-discharge threshold
2.437
12
2.500
17
2.563
22
Output delay of over-
Discharge
VDD=3.6V to 2.4V
ms
V
Detect rising edge of 'V-' pin
Voltage
Excess current threshold
0.18
7
0.20
10
0.22
13
Output delay of excess
Current
Short protection voltage
Output Delay of Short
protection
tVDET3
Vshort
tshort
ms
V
VDD=3.0V
VDD=3.0V
VDD-1.2 VDD-0.9 VDD-0.6
5
50
µs
Reset resistance for excess
current protection
Rshort
VDD=3.6V, V- =1.0V
37
75
113
0.5
kW
Vol1
Voh1
Vol2
Voh2
IDD
Nch ON voltage of COUT
Pch ON voltage of COUT
Nch ON voltage of DOUT
Pch ON voltage of DOUT
Supply current
Iol=40µA, VDD=4.4V
Ioh=-40µA, VDD=3.9V
Iol=40µA, VDD=2.2V
Ioh=-40µA, VDD=3.9V
VDD=3.9V,V- =0V
VDD=2.0V
0.3
3.75
0.2
3.7
6.0
V
V
V
V
µA
µA
3.4
3.4
0.5
10.0
0.1
Istandby
Standby current
*Note: Considering of variation in process parameters, we compensate for this characteristic related to temperature by laser-trim,
however, this specification is guaranteed by design, not production tested.
Rev.0.01
- 7 -
l
R5422N112E
Symbol
Unless otherwise provided, Topt=25°C
Item
Conditions
Voltage defined as VDD - VSS
Voltage defined as VDD - VSS ,
VDD – V-=4V
MIN.
TYP.
MAX.
Unit
VDD1
Operating input voltage
Maximum Voltage for
disable of 0V charging
1.5
10
V
Vnochg
VDET1
0.5
0.8
V
R1=330W(Topt=25°C)
4.325
4.320
4.350
4.350
4.375
4.380
V
V
Over-charge threshold
R1=330W (Topt=0 to 50°C)*Note
Release voltage for over-
charge detection
Output delay of over-
Charge
Output delay of Release
from Over-charge
VREL1
tVDET1
tVREL1
VDET2
tVDET2
VDET3
4.100
61
4.150
77
4.200
93
V
ms
ms
V
C=0.01µF, VDD=3.6V to 4.4V
C=0.01µF, VDD=4.4V to 4.1V
15
20
25
Detect falling edge of supply
Voltage
Over-discharge threshold
2.437
12
2.500
17
2.563
22
Output delay of over-
Discharge
VDD=3.6V to 2.4V
ms
V
Detect rising edge of 'V-' pin
Voltage
Excess current threshold
0.18
7
0.20
10
0.22
13
Output delay of excess
Current
Short protection voltage
Output Delay of Short
protection
tVDET3
Vshort
tshort
VDD=3.0V
VDD=3.0V
VDD=3.0V
ms
V
VDD-1.2 VDD-0.9 VDD-0.6
5
50
µs
Reset resistance for excess
current protection
Rshort
VDD=3.6V, V- =1.0V
37
75
113
0.5
kW
Vol1
Voh1
Vol2
Voh2
IDD
Nch ON voltage of COUT
Pch ON voltage of COUT
Nch ON voltage of DOUT
Pch ON voltage of DOUT
Supply current
Iol=40µA, VDD=4.4V
Ioh=-40µA, VDD=3.9V
Iol=40µA, VDD=2.2V
Ioh=-40µA, VDD=3.9V
VDD=3.9V,V- =0V
VDD=2.0V
0.3
3.7
0.2
3.7
6.0
V
V
V
V
µA
µA
3.4
3.4
0.5
10.0
0.1
Istandby
Standby current
*Note: Considering of variation in process parameters, we compensate for this characteristic related to temperature by laser-trim,
however, this specification is guaranteed by design, not production tested.
Rev. 0.01
- 8 -
n TYPICAL APPLICATION
330W
5
0.1mF
4
2
R5422N
0.01mF
6
1
3
1kW
n APPLICATION HINTS
R1 and C1 will stabilize a supply voltage to the R5422Nxxxx. A recommended R1 value is less than 1kW.
A larger value of R1 leads higher detection voltage, makes some errors, because of shoot through current flowed in the
R5422Nxxxx.
R2 will stabilize a V- pin voltage. The resetting from over-discharge with connecting a charger possibly be disabled by larger
value of R2. Recommended value is less than 1 kW.
R1 and R2 can operate also as a part of current limit circuit against for setting cell reverse direction or for applying excess
charging voltage to the R5422Nxxxx, battery pack, while smaller R1 and R2 may cause a power consumption over rating of
power dissipation of the R5422Nxxxx and a total of 'R1+R2' should be more than 1kW.
Rev.0.01
- 9 -
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