LTC3557 manager equivalent, usb power manager.
* Seamless Transition Between Input Power Sources: Li-Ion Battery, USB, 5V Wall Adapter or High Voltage Buck Regulator with Bat-TrackTM
* 200mΩ Internal Ideal Dio.
* HDD-Based MP3 Players
* PDA, PMP, PND/GPS
* USB-Based Handheld Products
DESCRIPTION
The LTC®3557/LTC3557-.
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