SY20492A
Description
The SY20492A 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 0.85V input voltage. It uses NMOS for the main switch and PMOS for the synchronous switch.
The SY20492A can disconnect the output from the input during shutdown mode. When the input voltage exceeds the regulated output voltage, the SY20492A will enter bypass mode automatically.
The low operating current along with a 0.1 µA shutdown current (typ.) makes this device suitable for battery applications where extended battery life is important.
The SY20492A is available in a pact SOT23-6 package.
Features
- 0.85V Minimum Input Voltage
- Adjustable Output Voltage from 1.8V to
5.5V
- Minimum 2A Valley Current Limit
- 5µA Typical Quiescent Current
- Load Disconnect During Shutdown
- Low RDS(ON) at 3.3V Output: 100mΩ Main,
170mΩ Synchronous
- Output...
