LTC4055/LTC4055-1 - USB Power Controller And Li-Ion Linear Charger

The LTC4055 LTC4055-1 are USB power manager and Li-Ion Battery Chargers designed to work in portable battery-powered applications. The parts manage and limit the total current used by the USB peripheral for operation and battery charging. Depending on the state of the current select pin (HPWR), total input current CAN be limited to either 100mA or 500mA. The voltage drop from the USB supply or battery to the USB peripheral is typically less than 100mV at 400mA and 20mV at 80mA. Other management features include: Automatic Switch over to battery when input is removed, inrush current limiting, reverse current blocking, undervoltage lockout and thermal shutdown. The LTC4055 LTC4055-1 include a complete constant- current/constant-voltage linear charger for single cell Li-ion batteries. The oat voltage applied to the battery is held to a tight 0.8% tolerance, and charge current is programmable using an external resistor to ground. Fully discharged cells are automatically trickle charged at 10% of the programmed current until the cell voltage exceeds 2.8V. Total charge time is programmable by an external capacitor to ground. When the battery drops 100mV be- low the oat voltage, Automatic recharging of the battery occurs. Also featured is an NTC thermistor input used to monitor battery temperature while charging. The LTC4055 LTC4055-1 are available in a 16-pin low prole (4mm x 4mm) QFN package.
By Linear Technology Corporation
LTC4055 's PackagesLTC4055 's pdf datasheet

LTC4055 Pinout, Pinouts
LTC4055 pinout,Pin out
This is one package pinout of LTC4055,If you need more pinouts please download LTC4055's pdf datasheet.

LTC4055 Application circuits
LTC4055 circuits
This is one application circuit of LTC4055,If you need more circuits,please download LTC4055's pdf datasheet.

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