A4056BK5R中文资料PDF规格书
A4056BK5R规格书详情
DESCRIPTION
The A4056B is a complete constant-current /constant-voltage linear charger for single cell lithium-ion batteries. Its SOT package and low external component count make the A4056B ideally suited for portable applications especially in USB power specifications.
Internal MOSFET architecture makes A4056B no external sense resistor needed, and no blocking diode is required. 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 A4056B automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is removed, the A4056B automatically enters a low current state, dropping the battery drain current to less than 2μA. The A4056B can be put into shutdown mode, reducing the supply current to 25μA.
When battery reversed, the internal protected the BAT pin throughout about 0.7mA current from GND. Also, The BAT pin has a 7KV ESD (HBM) capability.
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 A4056B is available in SOT 2 5 and SOT89 5
packages.
FEATURES
Programmable Charge Current Up to 500mA
No MOSFET, Sense Resistor o r Blocking Diode
Required
Complete Linear Charger in SOT Package for
single Cell Lithium Ion Batteries
Constant Current/Constant Voltage Operation
with Thermal Regulation to Maximize Charge
Rate Without Risk of Overheating
Charges Single Cell Li Ion Bat teries Directly
from USB Port
Preset 4.2V Charge Voltage with ±1 Accuracy
Charge Current Monitor Output for Gas Gauging
Automatic Recharge
Charge Status Output Pin
C/10 Charge Termination
25 μ A Supply Current in Shutdown
2.9V Trickle Charge Threshold
Soft Start Limits Inrush Current
Battery reversed protection
7KV ESD(HBM) capability
Available in SOT 2 5 and SOT89 5 p ackage s
APPLICATION
Cellular Telephones, PDAs, MP3 Players
Charging Docks and Cradles
Bluetooth Applications
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
A |
专业铁帽 |
CAN4 |
16000 |
原装铁帽专营,代理渠道量大可订货 |
询价 | ||
MICROPOWER |
23+ |
DIP |
4 |
只做原装正品现货!或订货假一赔十! |
询价 | ||
23+ |
N/A |
58800 |
一级代理放心采购 |
询价 | |||
MOLEX/莫仕 |
2308+ |
562756 |
一级代理,原装正品,公司现货! |
询价 | |||
AIT |
2021+ |
SOP8 |
3978 |
原厂授权代理,海外优势订货渠道。可提供大量库存,详 |
询价 | ||
23+ |
N/A |
58800 |
一级代理放心采购 |
询价 | |||
AiT |
瑞智芯 只做原装 |
3938 |
询价 | ||||
QFP |
893 |
100%原装正品!现货热价热卖!可开17%增值税票! |
询价 | ||||
AiT |
21+ |
3938 |
全新原装鄙视假货15118075546 |
询价 | |||
A |
专业铁帽 |
CAN4 |
67500 |
铁帽原装主营-可开原型号增税票 |
询价 |