A4055E5R中文资料PDF规格书
A4055E5R规格书详情
DESCRIPTION
The A4055 is a complete constant-current / constant-voltage linear charger for single cell lithium-Ion batteries. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The A4055 automatically terminates the charge cycle when the charge current drops to 1/10 the programmed value after the final float voltage is reached. When the input supply (wall adapter or USB supply) is removed, the A4055 automatically enters a low current state, dropping the battery drain current to less than 2μA. The A4055 can be put into shutdown mode, reducing the supply current to 25μA. Other features include charge current monitor, under-voltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage. The A4055 is available in SOT-25 Package
FEATURES
Programmable Charge Current Up to 800mA
No MOSFET, Sense Resistor or Blocking Diode Required
Preset 4.2V Charge Voltage with ±1 Accuracy
Charge Current Monitor Output for Gas Gauging
Thermal Regulation Maximizes Charge Rate Without Risk of Overheating
Charges Single Cell Li-Ion Batteries directly from USB Port
Over-Voltage Protect
Automatic Recharge
Charge Status Output Pin
C/10 Charge Termination
25μA Supply Current in Shutdown
2.9V Trickle Charge Threshold
Soft-Start Limits Inrush Current
Available in SOT-25 Package APPLICATION
Cellular and Smart Phones
Charging Docks and Cradles
Blue Tooth Applications
PDAs
MP3/MP4/MP5 Players
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
AiT |
21+ |
3000 |
全新原装鄙视假货15118075546 |
询价 | |||
MICROPOWER |
23+ |
DIP |
4 |
只做原装正品现货!或订货假一赔十! |
询价 | ||
TI |
2023+ |
MSOP8 |
80000 |
一级代理/分销渠道价格优势 十年芯程一路只做原装正品 |
询价 | ||
N/A |
2315+ |
TSSOP-8 |
3886 |
优势代理渠道,原装现货,可全系列订货 |
询价 | ||
MOLEX/莫仕 |
2308+ |
562756 |
一级代理,原装正品,公司现货! |
询价 | |||
AIT-创瑞科技 |
24+25+/26+27+ |
SOT-23-5 |
78800 |
一一有问必回一特殊渠道一有长期订货一备货HK仓库 |
询价 | ||
21+ |
QFP |
35200 |
一级代理/放心采购 |
询价 | |||
22+ |
TSOP8S |
3629 |
原装优势!房间现货!欢迎来电! |
询价 | |||
TI/德州仪器 |
20+ |
MSOP8 |
5000 |
原装正品 |
询价 | ||
MOLEX |
1 |
全新原装 货期两周 |
询价 |