Datasheet for LTC4054-4.2:
- Manufacturer Part Number : LTC4054-4.2
- Manufacturer : AD
- Description : Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT
- Series : LTC4054-4.2
- Reference Price : USD 1.168
- Our Price : We have a better price, contact us by email
- Product Type : Battery Management
- Function : Battery Charger IC
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LTC4054-4.2
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
Contact us to check the best price and real time inventory quantity for LTC4054-4.2. If you need any more information about LTC4054-4.2, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
The LTC4054 is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. Its ThinSOT package and low external component count make the LTC4054 ideally suited for portable applications. Furthermore, the LTC4054 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. 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 LTC4054 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 LTC4054 automatically enters a low current state, dropping the battery drain current to less than 2µA. The LTC4054 can be put into shutdown mode, reducing the supply current to 25µA.
Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage.
| Max Charge Current | Trickle Charge | |
| LTC4054-4.2 | 800mA | Yes |
| LTC4054X-4.2 | 800mA | No |
| LTC4054L-4.2 | 150mA | Yes |
Applications
- Cellular Telephones, PDAs, MP3 Players
- Charging Docks and Cradles
- Bluetooth Applications
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
