LTC3557 Overview
The LTC®3557/LTC3557-1 is a highly integrated power management and battery charger IC for single cell Li-Ion/ Polymer battery applications. It includes a PowerPathTM manager with automatic load prioritization, a battery charger, an ideal diode and numerous internal protection.
LTC3557 Key Features
- Seamless Transition Between Input Power Sources: Li-Ion Battery, USB, 5V Wall Adapter or High Voltage Buck Regulator wit
- 200mΩ Internal Ideal Diode Plus Optional External Ideal Diode Controller Provides Low Loss Power Path When Input Current
- Triple Adjustable High Efficiency Step-Down Switching Regulators (600mA, 400mA, 400mA IOUT)
- Pin Selectable Burst Mode® Operation
- Full Featured Li-Ion/Polymer Battery Charger
- 1.5A Maximum Charge Current with Thermal Limiting
- Battery Float Voltage
- Low Profile 4mm × 4mm 28-Pin QFN Package