LTC3455EUF#PBF

LTC3455 is a complete power management solutions for a variety of portable applications. This device contains two synchronous step-down DC/DC converters, a USB power controller, a full-featured Li-ion battery charger, a Hot Swap output, a low-battery indicator, and numerous internal protection features. It provides a small, simple solution for obtaining power from three different power sources: a single-cell Li-ion battery, a USB port, and a wall adapter. Current drawn from the USB bus is accurately limited under all conditions. Whenever a USB or a wall adapter is present, the battery charger is enabled and all internal power for the device is drawn from the appropriate external power source. All outputs are discharged to ground during shutdown to provide complete output disconnect. It is used in application such as handheld computers, digital cameras, MP3 players etc.

• Two high efficiency DC/DC converters upto 96%
• Thermal regulation maximizes battery charge rate without risk of overheating
• Hot Swap™ output for SDIO and memory cards
• Pin-selectable Burst Mode® operation
• Output disconnect: all outputs discharged to ground during shutdown
• Full-featured Li-ion battery charger with 4.2V float voltage
• Shutdown current is 2μA typical at (VPWRON = 0V, VMAX = 0V)
• Operating temperature is -40°C to 85°C
• Package style is 24-lead plastic QFN

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party