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SY20492 - High-Efficiency 2A Valley-Current Synchronous Boost Converter

Datasheet Summary

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.

Features

  • 1.8V 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 Overvoltage Protection (OVP).
  • Auto-Bypass Mode when VIN ≥ VOUT.
  • RoHS-Compliant and Halogen-Free.
  • Compact Package: SOT23-6.

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Datasheet preview – SY20492

Datasheet Details

Part number SY20492
Manufacturer Silergy
File Size 1.49 MB
Description High-Efficiency 2A Valley-Current Synchronous Boost Converter
Datasheet download datasheet SY20492 Datasheet
Additional preview pages of the SY20492 datasheet.

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Full PDF Text Transcription

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SY20492 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 (typ.) makes this device suitable for battery applications where extended battery life is important.
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