SY20492 Datasheet | Silergy

1.8V Minimum Input, 5.5V Maximum Output, High-Efficiency 2A Valley-Current Synchronous Boost Converter General Description The SY20492 is a high-efficiency, synchronous Boost converter designed for single-cell lithium (Li-ion or Li-polymer) or two-cell to three-cell nickel (alkaline Ni-Cd or Ni-MH) battery-powered applications. It can operate down to 1.8V input voltage. It uses NMOS for the main switch and PMOS for the synchronous switch. The SY20492 disconnects the output from the input during shutdown mode. When the input voltage exceeds the regulated output voltage, the SY20492 will enter bypass mode automatically. The low operating current along with a 0.1 µA shutdown current...