SY20492AABC - 0.85V Minimum Input and 5. 5V Maximum Output High Efficiency 2A Valley Current Synchronous Boost

Features


  • 0.85V Minimum Input Voltage
  • Adjustable Output Voltage From 1.8V to 5.5V
  • Min 2A Valley Current Limit
  • 5µA Typical Quiescent Current
  • Load Disconnect During Shutdown
  • Low RDS(ON) (Main Switch/Synchronous Switch) at 3.3V Output: 100/170mΩ
  • Output OVP
  • RoHS Compliant and Halogen Free
  • Auto Bypass Mode When VIN ≥VOUT
  • Compact Package SOT23-6


Typical Application

Description

The SY20492A is a high efficient, synchronous, step-up Boost converter designed for one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline Ni-Cd or Ni-MH battery powered applications. It can convert down to 0.85V input voltage. It adopts NMOS for the main switch and PMOS for the synchronous switch.

The SY20492A can disconnect the output from input during the shutdown mode. When input voltage exceeds the regulated output voltage, the SY20492A enters bypass mode automatically.

Applications


  • All Single Cell Li or Dual Cell Battery Operated Products as MP-3 Player, PDAs, and Other Portable Equipment