S-8254 PDF даташит
Спецификация S-8254 изготовлена «Seiko Instruments» и имеет функцию, называемую «BATTERY PROTECTION IC». |
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Детали детали
Номер произв | S-8254 |
Описание | BATTERY PROTECTION IC |
Производители | Seiko Instruments |
логотип |
25 Pages
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Rev.2.3_00
BATTERY PROTECTION IC
FOR 3-SERIAL OR 4-SERIAL-CELL PACK
S-8254 Series
The S-8254 series is a protection IC for 3-serial or 4-serial cell
lithium ion rechargeable batteries and includes a high-accuracy
voltage detector and delay circuit.
The S-8254 series protects both 3-serial or 4-serial cells using the
SEL pin for switching.
Features
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(1) High-accuracy voltage detection for each cell
• Overcharge detection voltage n (n = 1 to 4)
• Overcharge release voltage n (n = 1 to 4)
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 hysteresis voltage n (n = 1 to 4) can be selected as 0 V or from a range of 0.1 V to 0.4
V in 50 mV steps.
(Overcharge hysteresis voltage = Overcharge detection voltage − Overcharge release voltage)
• Overdischarge detection voltage n (n = 1 to 4) 2.0 V to 3.0 V (100 mV steps) Accuracy ±80 mV
• Overdischarge release voltage n (n = 1 to 4) 2.0 V to 3.4 V*2
Accuracy ±100 mV
*2. Overdischarge hysteresis voltage n (n = 1 to 4) can be selected as 0 V or from a range of 0.2 V to
0.7 V in 100 mV steps.
(Overdischarge hysteresis voltage = Overdischarge release voltage − Overdischarge detection
voltage)
(2) Three-level overcurrent protection
• Overcurrent detection voltage 1
0.05 V to 0.3 V (50 mV steps) Accuracy ±25 mV
• Overcurrent detection voltage 2
0.5 V
Accuracy ±100 mV
• Overcurrent detection voltage 3
VC1 − 1.2 V
Accuracy ±300 mV
(3) Delay times for overcharge detection, overdischarge detection and overcurrent detection 1 can be set by
external capacitors. (Delay times for overcurrent detection 2 and 3 are fixed internally.)
(4) Switchable between a 3-serial cell and 4-serial cell using the SEL pin
(5) Charge/discharge operation can be controlled via the control pins.
(6) Withstanding voltage element
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 30 µA max. (+25°C)
• Power-down mode 0.1 µA max. (+25°C)
Applications
• Lithium-ion rechargeable battery packs
Package
• 16-Pin TSSOP (Package drawing code: FT016-A)
Seiko Instruments Inc.
1
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BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL-CELL PACK
S-8254 Series
Block Diagram
COP
VMP
1 MΩ
900 kΩ
DOP, COP,
RVCM, RVSM
Control Circuit
Delay Circuit
Delay Circuit
Delay Circuit
Delay Circuit
−
+
+
−
−
+
+
−
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DOP
VINI
CDT
+
−
+
−
+
−
−
+
+
−
−
+
+
−
Rev.2.3_00
VDD
VC1
VC2
VC3
VC4
CCT
VSS
200 nA
CTL
SEL
Figure 1
2 Seiko Instruments Inc.
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Rev.2.3_00
BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL-CELL PACK
S-8254 Series
Selection Guide
1. Product Name
S−8254A xx
FT − TB
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IC direction of tape specifications*1
Package abbreviation
FT: 16-Pin TSSOP
*1. Refer to the taping drawing.
Additional number
Sequentially set from AA to ZZ
2. Product Name List
Table 1
Product
Name/Parameter
Overcharge
Detection Voltage
VCU
Overcharge
Release Voltage
VCL
Overdischarge
Detection Voltage
VDL
Overdischarge
Release Voltage
VDU
S-8254AAAFT-TB 4.350 ± 0.025 V 4.150 ± 0.050 V 2.00 ± 0.080 V 2.70 ± 0.100 V
S-8254AABFT-TB 4.250 ± 0.025 V 4.250 ± 0.025 V 2.00 ± 0.080 V 2.70 ± 0.100 V
S-8254AAEFT-TB 4.350 ± 0.025 V 4.150 ± 0.050 V 2.00 ± 0.080 V 2.70 ± 0.100 V
S-8254AAFFT-TB 4.350 ± 0.025 V 4.150 ± 0.050 V 2.40 ± 0.080 V 3.00 ± 0.100 V
S-8254AAGFT-TB 4.275 ± 0.025 V 4.075 ± 0.050 V 2.30 ± 0.080 V 2.70 ± 0.100 V
S-8254AAHFT-TB 4.350 ± 0.025 V 4.150 ± 0.050 V 2.40 ± 0.080 V 2.70 ± 0.100 V
S-8254AAIFT-TB 4.350 ± 0.025 V 4.150 ± 0.050 V 2.40 ± 0.080 V 3.00 ± 0.100 V
S-8254AAJFT-TB 4.350 ± 0.025 V 4.150 ± 0.050 V 2.40 ± 0.080 V 3.00 ± 0.100 V
S-8254AAKFT-TB 4.350 ± 0.025 V 4.150 ± 0.050 V 2.70 ± 0.080 V 3.00 ± 0.100 V
Overcurrent
Detection Voltage 1
VIOV1
0.30 ± 0.025 V
0.30 ± 0.025 V
0.20 ± 0.025 V
0.20 ± 0.025 V
0.13 ± 0.025 V
0.10 ± 0.025 V
0.30 ± 0.025 V
0.15 ± 0.025 V
0.20 ± 0.025 V
0 V Battery
Charge Function
Available
Available
Available
Available
Available
Available
Available
Available
Available
Remark If a product with the required detection voltage does not appear in the above list, contact our sales
office.
Seiko Instruments Inc.
3
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Номер в каталоге | Описание | Производители |
S-8253A | BATTERY PROTECTION IC | Seiko Instruments |
S-8253B | BATTERY PROTECTION IC | Seiko Instruments |
S-8253C | BATTERY PROTECTION IC | Seiko Instruments |
S-8253D | BATTERY PROTECTION IC | Seiko Instruments |
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