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PDF S8233A Data sheet ( Hoja de datos )
| Número de pieza | S8233A | |
| Descripción | Battery Protection IC for 3-Serial Cell Pack | |
| Fabricantes | Seiko Instruments | |
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Rev.3.2_10
BATTERY PROTECTION IC
FOR 3-SERIAL-CELL PACK
S-8233A Series
The S-8233A Series is a series of lithium-ion rechargeable battery
protection ICs incorporating high-accuracy voltage detection circuits and
delay circuits. It is suitable for a 3-serial-cell lithium-ion battery pack.
Features
(1) Internal high-accuracy voltage detection circuit
Over charge detection voltage
4.10 ± 0.05 V to 4.35 ± 0.05 V
50 mV- step
Over charge release voltage
3.85 ± 0.10 V to 4.35 ± 0.10 V
50 mV- step
(The over charge release voltage can be selected within the range where a difference from over
charge detection voltage is 0 V to 0.3 V)
Over discharge detection voltage
2.00 ± 0.08 V to 2.70± 0.08 V
100 mV- step
Over discharge release voltage
2.00 ± 0.10 V to 3.70± 0.10 V
100 mV - step
(The over discharge release voltage can be selected within the range where a difference from over
discharge detection voltage is 0 V to 1.0 V)
Over current detection voltage 1
0.15 ±0.015 V to 0.5 ±0.05 V
50 mV-step
(2) High input-voltage device (absolute maximum rating: 26 V)
(3) Wide operating voltage range:
2 V to 24 V
(4) The delay time for every detection can be set via an external capacitor.
(5) Three over current detection levels (protection for short-circuiting)
(6) Internal charge/discharge prohibition circuit via the control terminal
(7) The function for charging batteries from 0 V is available.
(8) Low current consumption
Operation
50 µA max. (+25 °C)
Power-down
0.1 µA max. (+25 °C)
Applications
Lithium-ion rechargeable battery packs
Packages
Package Name
14-Pin SOP
16-Pin TSSOP
Package
FE014-A
FT016-A
Drawing Code
Tape
FE014-A
FT016-A
Reel
FE014-A
FT016-A
Seiko Instruments Inc.
1
1 page  
Rev.3.2_10
Pin Assignment
DOP
COP
VMP
COVT
CDT
CCT
VSS
14-Pin SOP
Top view
1 14
2 13
3 12
4 11
5 10
69
78
Figure 2
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233A Series
Pin No. Symbol
Table 3
Pin description
1 DOP Connects FET gate for discharge control (CMOS output)
2 COP Connects FET gate for charge control (Nch open-drain output)
VCC 3 VMP Detects voltage between VCC to VMP(Over current detection pin)
CD1 4 COVT Connects capacitor for over current detection1delay circuit
VC1 5 CDT Connects capacitor for over discharge detection delay circuit
CD2 6 CCT Connects capacitor for over charge detection delay circuit
VC2 7 VSS Negative power input, and connects negative voltage for battery 3
8 CTL Charge/discharge control signal input
CD3 9 CD3 Battery 3 conditioning signal output
CTL 10 VC2 Connects battery 2 negative voltage and battery 3 positive voltage
11 CD2 Battery 2 conditioning signal output
12 VC1 Connects battery 1 negative voltage and battery 2 positive voltage
13 CD1 Battery 1 conditioning signal output
14 VCC Positive power input and connects battery 1 positive voltage
DOP
NC
COP
VMP
COVT
CDT
CCT
VSS
16-Pin TSSOP
Top view
1 16
2 15
3 14
4 13
5 12
6 11
7 10
89
Figure 3
Table 4
Pin No. Symbol
Pin description
1 DOP Connects FET gate for discharge control (CMOS output)
2 NC No connection*1
VCC
NC
3 COP Connects FET gate for charge control (Nch open-drain output)
CD1 4 VMP Detects voltage between VCC to VMP(Over current detection pin)
VC1 5 COVT Connects capacitor for over current detection1 delay circuit
CD2
VC2
6 CDT Connects capacitor for over discharge detection delay circuit
CD3 7 CCT Connects capacitor for over charge detection delay circuit
CTL 8 VSS Negative power input, and connects negative voltage for battery 3
9 CTL Charge/discharge control signal input
10 CD3 Battery 3 conditioning signal output
11 VC2 Connects battery 2 negative voltage and battery 3 positive voltage
12 CD2 Battery 2 conditioning signal output
13 VC1 Connects battery 1 negative voltage and battery 2 positive voltage
14 CD1 Battery 1 conditioning signal output
15 NC No connection*1
16 VCC Positive power input and connects battery 1 positive voltage
*1. The NC pin is electrically open. The NC pin can be connected to
VCC or VSS.
Seiko Instruments Inc.
5
5 Page 
Rev.3.2_10
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233A Series
(13) Measurement 13 Measurement circuit 8
Set S4 to ON, S1, S2, S3, S5, and S6 to OFF, V1, V2, V3 to 3.5 V and V4, V6, and V7 to 0 V under
normal condition. Increase V5 from 0 V gradually. The V5 voltage when I2 = 10 µA is the CD1'L' voltage
(VCD1(L))
Set S5 to ON, S1, S2, S3, S4, and S6 to OFF, V1, V2, and V3 to 3.5 V and V4, V5, and V7 to 0 V under
normal condition. Increase V6 from 0 V gradually. The V6 voltage when I3 = 10 µA is the CD2'L' voltage
(VCD2(L)).
Set S6 to ON, S1, S2, S3, S4, and S5 to OFF, V1, V2, and V3 to 3.5 V and V4, V5, and V6 to 0 V under
normal condition. Increase V7 from 0 V gradually. The V7 voltage when I4 = 10 µA is the CD3'L' voltage
(VCD3(L)).
Set S1 to ON, S2, S3, S4, S5, and S6 to OFF, V1 to 4.5 V, V2 and V3 to 3.5 V and V5, V6, and V7 to 0 V
under over charge condition. Increase V4 from 0 V gradually. The V4 voltage when I1 = 0.1 µA is the
CD1'H' voltage (VCD1(H)).
Set S2 to ON, S1, S3, S4, S5, and S6 to OFF, V2 to 4.5 V, V1 and V3 to 3.5 V and V5, V6, and V7 to 0 V
under over charge condition. Increase V4 from 0 V gradually. The V4 voltage when I1 = 0.1 µA is the
CD2'H' voltage (VCD2(H)).
Set S3 to ON, S1, S2, S4, S5, and S6 to OFF, V3 to 4.5 V, V1 and V2 to 3.5 V and V5, V6, and V7 to 0 V
under over charge condition. Increase V4 from 0 V gradually. The V4 voltage when I1 = 0.1 µA is the
CD3'H' voltage (VCD3(H)).
(14) Measurement 14 Measurement circuit 9
Set V1, V2, and V3 to 4.5 V under over charge condition. The current I1 flowing to COP terminal is COP
OFF LEAK current (ICOL).
(15) Measurement 15 Measurement circuit 10
Set V1, V2, and V3 to 0 V, and V8 to 2 V, and decrease V8 gradually. The V8 voltage when COP = 'H'
(VSS + 0.1 V or higher) is the 0V charge start voltage (V0CHAR).
Seiko Instruments Inc.
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet S8233A.PDF ] | |
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