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PDF S-8253B Data sheet ( Hoja de datos )

Número de pieza S-8253B
Descripción BATTERY PROTECTION IC
Fabricantes Seiko Instruments 
Logotipo Seiko Instruments Logotipo



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No Preview Available ! S-8253B Hoja de datos, Descripción, Manual

Rev.2.1_00
BATTERY PROTECTION IC
FOR 2-SERIAL OR 3-SERIAL-CELL PACK
S-8253A/B Series
The S-8253A/B Series are protection ICs for 2-serial or 3-serial cell
lithium-ion rechargeable batteries and include high-accuracy
voltage detectors and delay circuits.
These ICs are suitable for protecting lithium-ion battery packs from
overcharge, overdischarge and overcurrent.
Features
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(1) High-accuracy voltage detection for each cell
Overcharge detection voltage n (n = 1 to 3)
Overcharge release voltage n (n = 1 to 3)
3.9 V to 4.4 V (50 mV steps) Accuracy ±25 mV
3.8 V to 4.4 V*1
Accuracy ±50 mV
*1. Overcharge release voltage = Overcharge detection voltage Overcharge hysteresis voltage
(Overcharge hysteresis voltage n (n = 1 to 3) can be selected as 0 V or from a range of 0.1 V to
0.4 V in 50 mV steps.)
Overdischarge detection voltage n (n = 1 to 3) 2.0 V to 3.0 V (100 mV steps) Accuracy ±80 mV
Overdischarge release voltage n (n = 1 to 3) 2.0 V to 3.4 V*2
Accuracy ±100 mV
*2. Overdischarge release voltage = Overdischarge release voltage Overdischarge hysteresis
voltage
(Overdischarge hysteresis voltage n (n = 1 to 3) can be selected as 0 V or from a range of 0.2 V to
0.7 V in 100 mV steps.)
(2) Three-level overcurrent detection (including load short circuiting detection)
Overcurrent detection voltage 1
0.05 V to 0.30 V (50 mV steps) Accuracy ±25 mV
Overcurrent detection voltage 2
0.5 V (fixed)
Overcurrent detection voltage 3
1.2 V (fixed)
(3) Delay times (overcharge, overdischarge, overcurrent) are generated by an internal circuit (external
capacitors are unnecessary).
(4) Charge/discharge operation can be inhibited via the control pin.
(5) 0 V battery charge function available/unavailable are selectable.
(6) High-voltage withstand devices
Absolute maximum rating: 26 V
(7) Wide operating voltage range
2 V to 24 V
(8) Wide operating temperature range
40°C to +85 °C
(9) Low current consumption
Operation mode
28 µA max. (+25°C)
Power-down mode
0.1 µA max. (+25°C)
Applications
Lithium-ion rechargeable battery packs
Lithium polymer rechargeable battery packs
Package
8-Pin TSSOP (Package drawing code: FT008-D)
Seiko Instruments Inc.
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S-8253B pdf
Rev.2.1_00
BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK
S-8253A/B Series
Pin Assignment
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DOP
COP
VMP
CTL
8-Pin TSSOP
Top view
18
27
36
45
Figure 3
VDD
VC1
VC2
VSS
Pin No.
1
2
3
4
5
6
7
8
Pin
Name
DOP
COP
VMP
CTL
VSS
VC2
VC1
VDD
Table 3 S-8253A Series
Function
Connection of discharge control FET gate
(CMOS output)
Connection of charge control FET gate (Nch
open-drain output)
Voltage detection between VDD and VMP
(overcurrent detection pin)
Input of charge/discharge control signal, pin for
shortening test time
(L: Normal operation,
H: Charge/discharge inhibited,
M (VDD × 1/2): Test time reduced)
Negative power supply input, negative voltage
connection for battery 2
No connection *1
Connection for negative voltage of battery 1 and
positive voltage of battery 2
Connection for positive power supply input and
positive voltage of battery 1
*1. No connection is electrically open.
This pin can be connected to VDD or VSS.
Remark For the external views, refer to package drawings.
Pin No.
1
2
3
4
5
6
7
8
Pin
Name
DOP
COP
VMP
CTL
VSS
VC2
VC1
VDD
Table 4 S-8253B Series
Function
Connection of discharge control FET gate
(CMOS output)
Connection of charge control FET gate (Nch
open-drain output)
Voltage detection between VDD and VMP
(overcurrent detection pin)
Input of charge/discharge control signal, pin for
shortening test time
(L: Normal operation,
H: Charge/discharge inhibited,
M (VDD × 1/2): Test time reduced)
Connection for negative power supply input and
negative voltage of battery 3
Connection for negative voltage of battery 2 and
positive voltage of battery 3
Connection for negative voltage of battery 1 and
positive voltage of battery 2
Connection for positive power supply input and
positive voltage of battery 1
Remark For the external views, refer to package drawings.
Seiko Instruments Inc.
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S-8253B arduino
Rev.2.1_00
BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK
S-8253A/B Series
9. VC1 pin current, VC2 pin current
(Test condition 9, test circuit 3)
VC1 pin current (IVC1), VC2 pin current (IVC2)
The VC1 pin current (IVC1) is the current that flows through the VC1 pin when V1 = V2 = 3.5 V (S-8253A
Series), V1 = V2 = V3 = 3.5 V (S-8253B Series), and S3 = OFF, S4 = ON. Similarly, the VC2 pin current
(IVC2) is the current that flows through the VC2 pin under these conditions (S-8253B Series only).
10. COP pin leakage current, COP pin sink current
(Test condition 10, test circuit 4)
COP pin leakage current (ICOH), COP pin sink current (ICOL)
The COP pin leakage current (ICOH) is the current that flows through the COP pin when V1 = V2 = 12 V
(S-8253A Series), V1 = V2 = V3 = 8 V (S-8253B Series), S6 = S7 = S8 = OFF, and S5 = ON.
The COP pin sink current (ICOL) is the current that flows through the COP pin when V1 = V2 = 3.5 V
(S-8253A Series), V1 = V2 = V3 = 3.5 V (S-8253B Series), V6 = 0.5 V, S5 = S7 = S8 = OFF, and S6 = ON.
11. DOP pin source current, DOP pin sink current
(Test condition 11, test circuit 4)
DOP pin source current (IDOH), DOP pin sink current (IDOL)
The DOP pin source current (IDOH) is the current that flows through the DOP pin when V1 = V2 = 1.8 V
(S-8253A Series), V1 = V2 = V3 = 1.8 V (S-8253B Series), V7 = 0.5 V, S5 = S6 = S8 = OFF, and S7 = ON.
The DOP pin sink current (IDOL) is the current that flows through the DOP pin when V1 = V2 = 3.5 V
(S-8253A Series), V1 = V2 = V3 = 3.5 V (S-8253B Series), V8 = 0.5 V, S5 = S6 = S7 = OFF, and S8 = ON.
12.www.DataSheet4U.com 0 V charge start battery charger voltage or 0 V charge inhibition battery voltage
(Test condition 12, test circuit 5)
0 V charge start battery charger voltage (V0CHA): Products that available 0 V charge
The COP pin voltage should be lower than V0CHA max. 1 V when V1 = V2 = 0 V (S-8253A Series), V1 = V2
= V3 = 0 V (S-8253B Series), and V9 = VVMP = V0CHA max..
0 V charge inhibition battery voltage (V0INH): Products that unavailable 0 V charge
The COP pin voltage should be higher than VVMP 1 V when V1 = V2 = V0INH min. (S-8253A Series), V1 =
V2 = V3 = V0INH min. (S-8253B Series), and V9 = VVMP = 24 V.
Seiko Instruments Inc.
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