XC3071是一款完整的單節(jié)鋰電池充電器，自帶OVP,VIN輸入耐壓30V ,BAT耐壓30V，帶電池防反接功能，兼容大小500-600mA充電電流，采用涓流，恒流，恒壓控制，SOT23-5封裝與較少的外部元件數(shù)目使得XC3071成為便攜式應(yīng)用的理想選擇。XC3071可以適合USB電源和適配器電源工作。
XC3071采用了內(nèi)部PMOSFET架構(gòu)，加上防倒充電路，所以不需要外部檢測電阻器和隔離二極管。熱反饋可對充電電流進行自動調(diào)節(jié)，以便在大功率操作或高環(huán)境溫度條件下對芯片溫度加以限制。充滿電壓4.2V，充電電流可通過一個電阻器進行外部設(shè)置。當(dāng)電池達到預(yù)設(shè)電壓后，充電電流將至設(shè)定值1/10，芯片將自動終止充電。
當(dāng)輸入電壓（交流適配器或者USB電源）被拿掉時，XC3071自動進入一個低電流狀態(tài)，電流漏電流在1uA以下，XC3071的其他特點包括欠壓閉鎖，自動再充電盒一個用于指示充電狀態(tài)的引腳。
GENERAL DESCRIPTION
The XC3072 Series is a complete constant
current & constant voltage linear charger for
single cell lithium-ion batteries. Its SOT23-5
package and low external component counts
make the XC3072 Series ideally suited for
portable applications. Furthermore, the XC3072
Series is specifically designed to work within
USB power specifications.
No external sense resistor is needed, and no
blocking diode is required due to the internal
MOSFET architecture. The charge voltage is
fixed at 4.2V/4.35V/4.4V, and the charge
current can be programmed externally with a
single resistor. The XC3072 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 XC3072 automatically
enters a low current state, dropping the battery
drain current to less than 2uA. The XC3072 can
be put into shutdown mode, reducing the supply
current to 50uA.
Under-voltage lockout, automatic recharge
and two status pins to indicate charge and
charge termination.
FEATURES
• Available in SOT23-5 Package
• 30V standoff input voltage at VCC pin
Programmable Charge Current Up to 600mA
• No MOSFET, Sense Resistor or Blocking
Diode Required
• Complete Linear Charger in SOT23-5
Package for single Cell Lithium-Ion Batteries
• Charges Single Cell Li-Ion Batteries Directly
from USB Port
• Preset 4.2V/4.35V/4.4V Charge Voltage with
±1% Accuracy
• Charge Current Monitor Output for Gas
Gauging
Automatic Recharge
• CC/10 Charge Termination
• 50uA Supply Current in Shutdown
• 2.9V Trickle Charge Threshold
• Soft-Start Limits Inrush Current
• ESD HBM 2KV
APPLICATIONS
Cellular Telephones, PDAs, MP3 /MP4 Players
E-cigarettes
Bluetooth
GPS Applications
