1，此产品为4.34V的浮充电压，专为高容量电池充电而设计。

2，经试产长期验证的品牌物料，品质*，长期现货供应!

Features
T*ical charge cycle（1000mAh battery）
Applications
T*ical charge cycle（1000mAh battery）
●Cellular Telephones
●Di*al Still Cameras
●MP3 Players
●Bluetooth Applications
●Portable Devices
●U* Bus-Powered Chargers
ME4057 is a complete constant-current/constant voltage
linear charger for single cell lithium-ion batteries. With a
thermally enhanced 8-PIN SOP package on the bottom
and low external component count make the ME4057
ideally suited for portable applications. Furthermore the
ME4057 is specifically designed to work within U* power
specifications.
No external sense resistor is needed and no blocking
diode is required due to the internal PMOSFET
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 ME4057 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 U* supply) is
removed the ME4057 automatically enters a low current
state dropping the battery drain current to less than
2μA.The ME4057 can be put into shutdown mode reducing
the supply current to 55μA.
Other features include Battery temperature monitor,
under-voltage lockout, automatic recharge and two status
pins to indicate charge and charge termination.
●Protection of battery cell reverse connection
● Programmable charge current up to 1A
●No MOSFET sense resistor or blocking diode
required
●Complete linear Charger in SOP8 Package for
single Cell Lithium-Ion Batteries.
●Constant-Current/Constant-Voltage operation
with thermal regulation to maximize Rate
Without risk of overheating.
● Preset 4.2V charge voltage with &plu*n;1% accuracy
● Automatic Recharge
● Two Status Indication for Charge status, no
battery and battery failure indicators
● C/10 charge termination
● 55μA supply current in shutdown
● 2.9V trickle current charge threshold
● Soft-Start limits inrush current
● Battery Temperature Sensing
● Available in SOP8-PP package

企业名：深圳市粤嘉鸿电子有限公司

类型：经销商

电话： 755-29743120

联系人：宋哲

地址：广东深圳9区白金大厦1601室