Switching Power Manager Suits USB OTG Applications
Linear Technology Corporation introduced its LTC4160 and LTC4160-1 power manager ICs for single-cell Li-Ion/Polymer battery-based applications. The LTC4160/-1 features a bidirectional switching power manager which can power an application and charge the battery from USB. Operating in reverse, the same switching regulator can take power from the battery to generate 5 V and deliver up to 500 mA for USB On-The-Go (OTG) applications without any additional components. The LTC4160/-1 includes automatic load prioritization when powered from USB, input overvoltage protection, a standalone battery charger, and an ideal diode, all in a 3 mm x 4 mm UTQFN package. The LTC4160-1 offers a 4.1 V battery float voltage, allowing high temperature safety margin, while the LTC4160 features a 4.2 V final charge voltage for optimized battery run time. The LTC4160/-1's PowerPath control with automatic load prioritization seamlessly manages power flow between a variety of input power sources such as a wall adapter or USB port and the Li-Ion/Polymer battery while preferentially providing power to the system load. Pricing starts at $2.85 each for 1,000-piece quantities.
Linear Technology Corp.