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PRELIMINARY
Li-Ion BATTERY PROTECTOR
'99.12.9
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 l High Voltage Process Technology Absolute Maximum Rating of Voltage level between VDD-V- 28v Low supply current....................................................Supply current Typ. 6.0A Standby current (detecting over-discharge) Typ. 0.1A High accuracy detector threshold ..............................Over-charge detector (Topt=25C) 25mV (Topt=0 to 50C) 30 mV Over-discharge detector 2.5% Excess current detector 20mV Variety of detector threshold .....................................Over-charge detector threshold 4.0V - 4.5V step of 0.01V Over-discharge detector threshold 2.0V - 3.0V step of 0.01V Built-in protection circuit ..........................................Excess current protection 0.05V - 0.4V step of 0.01V Output delay of over-charge ......................................Time delay at C=0.01F tVDET1=75ms, tVREL1=20ms Output delay of over-discharge .................................Internally fixed TYP. 17ms Output delay of excess-current Internally fixed TYP. 10ms 2 Over-current modes Excess Current Mode / Short Mode Charging Available / non-available at 0V Cell Acceptable of 0V Cell C version Non-acceptable of 0V Cell E versi on Small package............................................................SOT-23-6 / 6-pin
l
l l l l l l l l
n APPLICATIONS
l Li+ one-cell protector for battery pack
Rev. 0.01
-1-
n BLOCK DIAGRAM
5 VDD Ct 4
Level Shift VD1
Delay VD2 Delay VD3
Short Detector
6
Vss
Dout
1
Cout
3
V-
2
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 --abc Code a b c 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 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. 1 2 3 4 5 6 Symbol DOUT VCOUT Ct VDD VSS 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) Ground(Ground pin of the IC)
Rev.0.01
-3-
n ABSOLUTE MAXIMUM RATINGS
Symbol VDD VVCt VCOUT VDOUT PD Topt Tstg Item Supply voltage Input Voltage V - pin Ct pin Output voltage COUT pin DOUT pin Power dissipation Operating temperature range Storage temperature range Ratings -0.3 to 12 VDD -28 to VDD +0.3 VSS -0.3 to VDD +0.3 VDD -28 to VDD +0.3 VSS -0.3 to VDD +0.3 150 -40 to 85 -55 to 125 VSS=0V Unit V V V V V mW C C
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 Item VDD1 Operating input voltage Minimum operating Voltage Vst for 0V charging VDET1 Over-charge threshold Conditions Voltage defined as VDD - VSS Voltage defined as VDD - V- , VDD - VSS=0V R1=330W(Topt=25C) R1=330W (Topt=0 to 50C)*Note Unless otherwise provided, Topt=25C MIN. TYP. MAX. Unit 1.5 10 V 1.2 4.225 4.220 4.000 C=0.01F, VDD=3.6V to 4.3V C=0.01F, VDD=4.3V to 4.1V Detect falling edge of supply voltage VDD=3.6V to 2.4V Detect rising edge of 'V-' pin voltage 60 15 2.437 12 0.18 4.250 4.250 4.050 75 20 2.500 17 0.20 4.275 4.280 4.100 90 25 2.563 22 0.22 V V V V ms ms V ms V
VREL1 tVDET1 tVREL1 VDET2 tVDET2 VDET3 tVDET3
Release voltage for overcharge detection Output delay of overCharge Output delay of Release from Over-charge Over-discharge threshold Output delay of overDischarge Excess current threshold
Output delay of excess 7 10 13 ms Current Vshort Short protection voltage VDD=3.0V VDD-1.2 VDD-0.9 VDD-0.6 V Output Delay of Short tshort VDD=3.0V 5 50 s protection Reset resistance for Excess Rshort VDD=3.6V, V- =1.0V 37 75 113 kW current protection Vol1 Nch ON voltage of COUT Iol=40A, VDD=4.4V 0.3 0.5 V Voh1 Pch ON voltage of COUT Ioh=-40A, VDD=3.9V 3.4 3.75 V Vol2 Nch ON voltage of DOUT Iol=40A, VDD=2.2V 0.2 0.5 V Voh2 Pch ON voltage of DOUT Ioh=-40A, VDD=3.9V 3.4 3.7 V IDD Supply current VDD=3.9V, V- =0V 6.0 10.0 A Istandby Standby current VDD=2.0V 0.1 A *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 Item VDD1 Operating input voltage Minimum operating Voltage Vst for 0V charging VDET1 Over-charge threshold Release voltage for overcharge detection Output delay of overCharge Output delay of Release from Over-charge Over-discharge threshold Output delay of overDischarge Excess current threshold
Conditions Voltage defined as VDD - VSS Voltage defined as VDD - V- , VDD - VSS=0V R1=330W(Topt=25C) R1=330W (Topt=0 to 50C)*Note
Unless otherwise provided, Topt=25C MIN. TYP. MAX. Unit 1.5 10 V 1.2 4.325 4.320 4.100 4.350 4.350 4.150 77 20 2.500 17 0.20 4.375 4.380 4.200 93 25 2.563 22 0.22 V V V V ms ms V ms V
VREL1 tVDET1 tVREL1 VDET2 tVDET2 VDET3 tVDET3
C=0.01F, VDD=3.6V to 4.4V C=0.01F, VDD=4.4V to 4.1V Detect falling edge of supply Voltage VDD=3.6V to 2.4V Detect rising edge of 'V-' pin Voltage
61 15 2.437 12 0.18
Output delay of excess 7 10 13 ms Current Vshort Short protection voltage VDD=3.0V VDD-1.2 VDD-0.9 VDD-0.6 V Output Delay of Short tshort VDD=3.0V 5 50 s protection Reset resistance for excess Rshort VDD=3.6V, V- =1.0V 37 75 113 kW current protection Vol1 Nch ON voltage of COUT Iol=40A, VDD=4.4V 0.3 0.5 V Voh1 Pch ON voltage of COUT Ioh=-40A, VDD=3.9V 3.40 3.75 V Vol2 Nch ON voltage of DOUT Iol=40A, VDD=2.2V 0.2 0.5 V Voh2 Pch ON voltage of DOUT Ioh=-40A, VDD=3.9V 3.4 3.7 V IDD Supply current VDD=3.9V,V- =0V 6.0 10.0 A Istandby Standby current VDD=2.0V 0.1 A *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 Item VDD1 Operating input voltage Maximum Voltage for Vnochg disable of 0V charging VDET1 Over-charge threshold Release voltage for overcharge detection Output delay of overCharge Output delay of Release from Over-charge Over-discharge threshold Output delay of overDischarge Excess current threshold
Conditions Voltage defined as VDD - VSS Voltage defined as VDD - VSS , VDD - V-=4V R1=330W(Topt=25C) R1=330W (Topt=0 to 50C)*Note
Unless otherwise provided, Topt=25C MIN. TYP. MAX. Unit 1.5 10 V 0.5 4.225 4.220 4.000 0.8 4.250 4.250 4.050 75 20 2.500 17 0.20 4.275 4.280 4.100 90 25 2.563 22 0.22 V V V V ms ms V ms V
VREL1 tVDET1 tVREL1 VDET2 tVDET2 VDET3 tVDET3
C=0.01F, VDD=3.6V to 4.3V C=0.01F, VDD=4.3V to 4.1V Detect falling edge of supply Voltage VDD=3.6V to 2.4V Detect rising edge of 'V-' pin Voltage
60 15 2.437 12 0.18
Output delay of excess 7 10 13 ms Current Vshort Short protection voltage VDD=3.0V VDD-1.2 VDD-0.9 VDD-0.6 V Output Delay of Short tshort VDD=3.0V 5 50 s protection Reset resistance for excess Rshort VDD=3.6V, V- =1.0V 37 75 113 kW current protection Vol1 Nch ON voltage of COUT Iol=40A, VDD=4.4V 0.3 0.5 V Voh1 Pch ON voltage of COUT Ioh=-40A, VDD=3.9V 3.4 3.75 V Vol2 Nch ON voltage of DOUT Iol=40A, VDD=2.2V 0.2 0.5 V Voh2 Pch ON voltage of DOUT Ioh=-40A, VDD=3.9V 3.4 3.7 V IDD Supply current VDD=3.9V,V- =0V 6.0 10.0 A Istandby Standby current VDD=2.0V 0.1 A *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 Item VDD1 Operating input voltage Maximum Voltage for Vnochg disable of 0V charging VDET1 Over-charge threshold Release voltage for overcharge detection Output delay of overCharge Output delay of Release from Over-charge Over-discharge threshold Output delay of overDischarge Excess current threshold
Conditions Voltage defined as VDD - VSS Voltage defined as VDD - VSS , VDD - V-=4V R1=330W(Topt=25C) R1=330W (Topt=0 to 50C)*Note
Unless otherwise provided, Topt=25C MIN. TYP. MAX. Unit 1.5 10 V 0.5 4.325 4.320 4.100 0.8 4.350 4.350 4.150 77 20 2.500 17 0.20 4.375 4.380 4.200 93 25 2.563 22 0.22 V V V V ms ms V ms V
VREL1 tVDET1 tVREL1 VDET2 tVDET2 VDET3 tVDET3
C=0.01F, VDD=3.6V to 4.4V C=0.01F, VDD=4.4V to 4.1V Detect falling edge of supply Voltage VDD=3.6V to 2.4V Detect rising edge of 'V-' pin Voltage
61 15 2.437 12 0.18
Output delay of excess VDD=3.0V 7 10 13 ms Current Vshort Short protection voltage VDD=3.0V VDD-1.2 VDD-0.9 VDD-0.6 V Output Delay of Short tshort VDD=3.0V 5 50 s protection Reset resistance for excess Rshort VDD=3.6V, V- =1.0V 37 75 113 kW current protection Vol1 Nch ON voltage of COUT Iol=40A, VDD=4.4V 0.3 0.5 V Voh1 Pch ON voltage of COUT Ioh=-40A, VDD=3.9V 3.4 3.7 V Vol2 Nch ON voltage of DOUT Iol=40A, VDD=2.2V 0.2 0.5 V Voh2 Pch ON voltage of DOUT Ioh=-40A, VDD=3.9V 3.4 3.7 V IDD Supply current VDD=3.9V,V- =0V 6.0 10.0 A Istandby Standby current VDD=2.0V 0.1 A *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
0.1mF
5
4
0.01mF
R5422N
1
2
6
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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