completevoltagelinearchargersinglecelllithiumionbatteries

产品概述 返回TOP

The CXLB7246MR 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 CXLB7246MR ideally suited for portable applications.Furthermore, the CXLB7246MR is specifically designed to work within USB power plete voltage linear charger single cell lithiumion 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 CXLB7246MR 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 CXLB7246MR automatically

enters a low current state, dropping the battery drain current to less than 2uA. The

CXLB7246MR can be put into shutdown mode, reducing the supply current to 50uA.

Other features include Battery temperature monitor, under-voltage lockout, automatic

recharge and two status pins to indicate charge and charge termination

产品特点 返回TOP

Programmable Charge Current Up to 200mA

No MOSFET, Sense Resistor or 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 Batteries Directly from USB Port

Preset 4.2V Charge Voltage with ±1% Accuracy

Charge Current Monitor Output for Gas Gauging

Automatic Recharge

Charge state pairs of output, no battery and fault

status display

C/10 Charge Termination

50uA Supply Current in Shutdown

2.9V Trickle Charge Threshold

Soft-Start Limits Inrush Current

Battery temperature monitoring function ESD HBM 8KV

Available in SOT23-5 Package

应用范围 返回TOP

Wearable device

Small capacity battery charger

application Bluetooth、GPS Applications