KB4054 Overview
The KB 4054 is a plete constant-current/constantvoltage linear charger for single cell lithium-ion batteries. Its ThinSOT package and low external ponent count make the KB4054 ideally suited for portable applications. Furthermore, the KB4054 is specifically designed to work within USB power specifications.
KB4054 Key Features
- Programmable Charge Current Up to 600mA
- No MOSFET, Sense Resistor or Blocking
- 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 Status Output Pin
- C/10 Charge Termination
- 25µA Supply Current in Shutdown
- 2.9V Trickle Charge Threshold (KB4054)