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[China]
Address: 3418, Duhuixuan, Shennan Avenue, Futian District, Shenzhen, Guangdong Province, China
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Shenzhen Hongxinwei Technology Co., Ltd |
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S-8254AABFT-TB Electronic Integrated Circuits Lithium-ion rechargeable battery packs Lithium polymer rechargeable battery packs
1.The S-8254A Series is a protection IC for 3-serial- or 4-serial-cell lithium-ion / lithium polymer rechargeable batteries and includes a high-accuracy voltage detector and delay circuit. The S-8254A Series protects both 3-serial or 4-serial cells using the SEL pin for switching.
2.Features
1)High-accuracy voltage detection for each cell
• Overcharge detection voltage n (n = 1 to 4) 3.90 V to 4.45 V (50
mV step) Accuracy ±25 mV
• Overcharge release voltage n (n = 1 to 4) 3.80 V to 4.45
V*1Accuracy ±50 mV
• Overdischarge detection voltage n (n = 1 to 4) 2.0 V to 3.0 V
(100 mV step) Accuracy ±80 mV
• Overdischarge release voltage n (n = 1 to 4) 2.0 V to 3.4
V*2Accuracy ±100 mV
(2) Three-level overcurrent protection
• Overcurrent detection voltage 1 0.05 V to 0.30 V (50 mV step)
Accuracy ±25 mV
• Overcurrent detection voltage 2 0.5 V Accuracy ±100 mV
• Overcurrent detection voltage 3 VVC1− 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) 0 V battery charge Enabled, inhibited
(7) Power-down function Available
(8) High-withstand voltage Absolute maximum rating : 26 V
(9) Wide operating voltage range 2 V to 24 V
(10) Wide operating temperature range −40°C to + 85°C
(11) Low current consumption • During operation 30 μA max. (+25°C)
• During power-down 0.1 μA max. (+25°C)
(12) Lead-free, Sn100%, halogen-free*3
3.1. 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)
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)
4. Applications
Lithium-ion rechargeable battery packs
Lithium polymer rechargeable battery packs
5.Block Diagram
6.Product Name Structure
7.Pin Configuration
1 COP FET gate connection pin for charge control (Nch open drain
output)
2 VMP Pin for voltage detection between VC1 and VMP (Pin for
overcurrent 3 detection)
3 DOP FET gate connection pin for discharge control FET (CMOS
output)
4 VINI Pin for voltage detection between VSS and VINI (Pin for
overcurrent detection 1,2
5 CDT Capacitor connection pin for delay for overdischarge
detection, delay for overcurrent detection 1
6 CCT Capacitor connection pin for delay for overcharge current
7 VSS Input pin for negative power supply, Connection pin for
battery 4’s negative voltage
8 NC *1 No connection
9 NC *1 No connection
10 SEL Pin for switching 3-series or 4-series cell VSS level:
3-series cell, VDD level : 4-series cell
11 CTL Control of charge FET and discharge FET
12 VC4 Connection pin for battery 3’s negative voltage, Connection
pin for battery 4’s positive voltage
13 VC3 Connection pin for battery 2’s negative voltage, Connection
pin for battery 3’s positive voltage
14 VC2 Connection pin for battery 1’s negative voltage, Connection
pin for battery 2’s positive voltage
15 VC1 Connection pin for battery 1’s positive voltage
16 VDD Input pin for positive power supply, Connection pin for
battery 1’s positive voltage
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons.
If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your MOQ?
A: We provide you small MOQ for each item, it depends your specific order!
Q3. Do you test or check all your goods before delivery?
A: Yes, we have 100% test and check all goods before delivery.
Q4: How do you make our business long-term and good relationship?
We keep good quality and competitive price to ensure our customers benefit ;
We respect every customer as our friend and we sincerely do business and make friends with them,It's not something that can be replaced.
Q5: How to contact us?
A: Send your inquiry details in the below,Click "Send"Now!!!
Shenzhen Hongxinwei Technology Co., Ltd
To adopt new technology,to produce products of quality,to offer high-class service.
Improve the management system continuously to meet customer requirement for high-quality products and services.
Why choose us?
