LTC4058X-4.2 - Standalone Linear Li-Ion Battery Chargers With Thermal Regulation In DFN

The LTC4058 is a complete constant-current/constantvoltage linear charger for single cell lithium-ion batteries. Its DFN package and low external component count make the LTC4058 ideally suited for portable applications. Furthermore, the LTC4058 is designed to work within USB power specifications.
The LTC4058 CAN Kelvin sense the battery terminal for more accurate float voltage charging. No external sense resistor or external blocking Diode are 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 conditions. The charge voltage is fixed at 4.2V and the charge current is programmed with a resistor. The LTC4058 terminates the charge cycle when the charge current drops to 10% of the programmed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is removed, the LTC4058 enters a low current state dropping the battery drain current to less than 2A. Other features include charge current monitor, undervoltage lockout, Automatic recharge and status pins to indicate charge termination and the presence of an input voltage.
*US Patent 6,522,118
By Linear Technology Corporation
LTC4058X-4.2 's PackagesLTC4058X-4.2 's pdf datasheet



LTC4058X-4.2 Pinout, Pinouts
LTC4058X-4.2 pinout,Pin out
This is one package pinout of LTC4058X-4.2,If you need more pinouts please download LTC4058X-4.2's pdf datasheet.

LTC4058X-4.2 Application circuits
LTC4058X-4.2 circuits
This is one application circuit of LTC4058X-4.2,If you need more circuits,please download LTC4058X-4.2's pdf datasheet.


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