SY20518
Description
The SY20518 is a 2.6V to 5.5V input voltage range, high efficiency, fixed frequency Buck-Boost converter that can provide up to 2A of continuous current to a load that requires a voltage below equal or above the input voltage. The converter can provide power for system powered by either a two-cell or three-cell alkaline, Ni-Cd or Ni-MH batteries, or a single cell Li-Ion or Li-polymer battery.
The SY20518 is based on a fixed frequency, pulse-widthmodulation (PWM) controller using synchronous rectification to obtain maximum efficiency. The output voltage and pensation circuit can be programmed using an external RC network.
The part automatically transitions to PFM mode under light load conditions, to maintain high efficiency across the entire load range.
During shutdown, the load is disconnected from the battery and the part only consumes 0.1µA of current (typ.).
The device is available in a 2 mm ×3 mm QFN package.
Features
- 2.6V to 5.5V Input Voltage Range
- 2A Continuous...
