ETA ETA4051
ETA4051 is a single cell, fully integrated constant current (CC)/constant voltage (CV) Li-ion battery charger. Its compact package with minimum external components requirement makes the ETA4051 ideal for portable applications. The ETA4051 has the function of precharge, which can charge the deeply discharged batteries by trickle.| Part No. | ETA4051 |
|---|---|
| Datasheet | ETA4051 Download |
| Manufacturer |  ETA |
| Description | 1A Fully Integrated Linear Charger |
| Buy | Stock & Price |
DESCRIPTION
No external sense resistor or blocking diode is necessary for the ETA4051. Build-in thermal feedback mechanism regulates the charge current to control the die temperature during high power operation or at elevated ambient temperature. The fast charge current can be programmed by an external resistor. CV regulation mode is automatically enabled once the battery’s charging curve reaches the constant voltage portion. The output current then decays and is finally terminated once the charge current drops to 1/10 of the programmed value. The ETA4051 keeps monitoring the battery voltage and enables a new charge cycle once the voltage drops by 135mV below the CV value. ETA4051 is in a SOT23-5 package.FEATURES
● 30V Input Standoff Voltage● 4.35V Charge Termination Voltage
● 2.6V Trickle Charge Threshold
● Input Over Voltage Protection
● Charge Current Programmable, up to 1A
● 400nA BAT Current when No Charging
● Soft-start Limits in-rush Current
● SOT23-5 Package
APPLICATIONS
● E-...
