POWER SUPPLY
LITHIUM-ION BATTERY PROTECTION IC (FOR 1-CELL)
The S-8491 Series is a series of lithium-ion rechargeable
battery protection ICs incorporating high-accuracy voltage
detectors and a delay circuit. This series is suitable for
protecting a single-cell pack.
S-8491 Series
FEATURES
• Built-in high-accuracy voltage detection circuits
Excess charge detection voltage
: 4.30
±
0.05V (S-8491AUP)
Excess charge release voltage
: 4.00
±
0.13V (S-8491AUP)
Excess discharge detection voltage : 2.30
±
0.10V
Excess discharge release voltage : 3.00
±
0.15V (S-8491AUP)
Excess current detection voltage
: 0.20
±
0.06V
• Built-in delay circuit
The excess charge, excess discharge or excess current is de-
tected with delay.
• Ultra-low current consumption
Operation
: 15.0
µA
max. (+25°C)
Power down : 0.48
µA
max. (+25°C)
• SOT-89-5 package
PIN CONFIGURATIONS
SOT-89-5 Top view
5
4
1 : CO
2 : V
CC
3 : DO
4 : V
SS
5 : CM
1
2
3
SPECIFICATIONS
Model No.
S-8491AUP-DKA-T2
S-8491BUP-DKB-T2
S-8491CUP-DKC-T2
S-8491DUP-DKD-T2
S-8491EUP-DKE-T2
Excess charge
detection voltage
4.30 ± 0.05V
4.35 ± 0.05V
4.25 ± 0.05V
4.25 ± 0.05V
4.25 ± 0.05V
Excess charge release
voltage
4.00 ± 0.13V
4.10 ± 0.13V
4.05 ± 0.13V
4.05 ± 0.13V
3.95 ± 0.13V
Excess discharge
release voltage
3.00 ± 0.15V
3.00 ± 0.15V
2.70 ± 0.15V
2.40 ± 0.15V
3.00 ± 0.15V
V
Please design all applications of the S-8491 Series with safety in mind.
LITHIUM-ION BATTERY PROTECTION IC (FOR 2-CELL)
The S-8232 is a series of lithium-ion rechargeable battery
protection ICs incorporating high-accuracy voltage detec-
tion circuits and delay circuits.
It is suitable for a 2-serial-cell lithium-ion battery pack.
S-8232 Series
FEATURES
• Internal high-accuracy voltage detection circuit
• Over charge detection voltage
•
3.90 V
±
25 mV to 4.60 V
±
25 mV
5 m V - step
Over charge release voltage
3.60 V
±
50 mV to 4.60 V
±
50 mV
5 m V - step
(The Over charge release voltage can be selected within the range
where a difference from Over charge detection voltage is 0 to 0.3 V)
Over discharge detection voltage
1.70 V
±
80 mV to 2.60 V
±
80 mV
50 mV - step
Over discharge release voltage
1.70 V
±
100 mV to 3.80 V
±
100 mV
50 mV - step
(The Over discharge release voltage can be selected within the range
where a difference from Over discharge detection voltage is 0 to 1.2V)
Over current detection voltage 1
0.07 V
±
20 mV to 0.30 V
±
20 mV
5 mV-step
PIN CONFIGURATIONS
•
Top view
•
8
7
6
5
V
CC
VC
ICT
V
SS
SENS
DO
CO
VM
1
2
3
4
TSSOP - 8
•
• High input-voltage device (absolute maximum rating: 18 V)
• Wide operating voltage range:
2.0 V to 16 V
• The delay time for every detection can be set via an external capacitor.
Each delay time for Over charge detection, Over discharge detection,
Over current detection are “Proportion of hundred to ten to one.”
• Two over current detection levels (protection for short-circuiting)
• Internal auxiliary over voltage detection circuit (Fail safe for over voltage)
• Internal charge circuit for 0V battery (Unavailable is option)
• Low current consumption
Operation
Power-down mode
7.5
µA
typ. 14.2
µA
max (-40 to +85
°C)
0.2 nA typ. 0.1
µA
max (-40 to +85
°C)
SELECTION GUIDE
Model/item
S-8232AAFT-T2
S-8232ABFT-T2
S-8232ACFT-T2
S-8232AEFT-T2
S-8232AFFT-T2
S-8232AGFT-T2
S-8232AHFT-T2
S-8232AIFT-T2
S-8232AJFT-T2
S-8232AKFT-T2
S-8232ALFT-T2
S-8232AMFT-T2
S-8232ANFT-T2
S-8232AOFT-T2
S-8232APFT-T2
Over charge
detection voltage
4.25V±25mV
4.35V±25mV
4.35V±25mV
4.35V±25mV
4.25V±25mV
4.25V±25mV
4.25V±25mV
4.325V±25mV
4.25V±25mV
4.20V±25mV
4.30V±25mV
4.19V±25mV
4.325V±25mV
4.30V±25mV
4.28V±25mV
Over charge
release voltage
4.05V±50mV
4.15V±50mV
4.15V±50mV
4.28V±50mV
4.05V±50mV
4.05V±50mV
4.05V±50mV
4.325V *1,2
4.05V±50mV
4.00V±50mV
4.05V±50mV
4.19V *1
4.325V *1,3
4.05V±50mV
4.05V ±50mV
Over discharge
detection voltage
2.40V±80mV
2.30V±80mV
2.30V±80mV
2.15V±80mV
2.30V±80mV
2.20V±80mV
2.20V±80mV
2.40V±80mV
2.40V±80mV
2.30V±80mV
2.00V±80mV
2.00V±80mV
2.40V±80mV
2.00V±80mV
2.30V±80mV
• TSSOP package (8-pin) 6.4 mm x 3.1 mm
Over discharge
release voltage
3.00V±100mV
3.00V±100mV
3.00V±100mV
2.80V±100mV
2.70V±100mV
2.40V±100mV
2.40V±100mV
3.00V±100mV
3.00V±100mV
2.90V±100mV
3.00V±100mV
3.00V±100mV
3.00V±100mV
3.00V±100mV
2.90V±100mV
Over current
detection voltage 1
0.150V±20mV
0.300V±20mV
0.300V±20mV
0.100V±20mV
0.300V±20mV
0.200V±20mV
0.300V±20mV
0.300V±20mV
0.150V±20mV
0.200V±20mV
0.200V±20mV
0.190V±20mV
0.300V±20mV
0.230V±20mV
0.100V±20mV
Over charge detection
delay (C3=0.22µF)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
sec
sec
sec
sec
sec
sec
sec
sec
sec
sec
sec
sec
sec
sec
sec
0V battery
charging function
Available
Available
Unavailable
Available
Available
Available
Available
Unavailable
Unavailable
Available
Available
Available
Unavailable
Available
Unavailable
*1) Without over charge detection/release hysteresis.
*2) Final over charge magnification: x 1.11. The others: x 1.25.
*3) Without Final over charge function
Change in the detection voltage is available in products other than the above listed ones. Please contact with our sales division.
22
V
Please design all applications of S-8232 Series with safety in mind.
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