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SY21222 - Step-Up Regulator

General Description

The SY21222 high efficiency DC-to-DC step-up regulator operates using current mode control, and can deliver 2A current over a wide input voltage range from 3V to 33V.

It integrates an N-channel MOSFET with low 200mΩ RDS(ON) to minimize conduction loss.

Key Features

  • 3V to 33V Input Voltage Range.
  • 33V Maximum VOUT.
  • 2A Internal MSOFET Current Limit.
  • 5µA Shutdown Current (Typ. ).
  • 100µA Iq (Typ. ).
  • Low RDS(ON) for Internal N-Channel MOSFET: 200mΩ.
  • 1MHz Switching Frequency.
  • Minimum On-Time: 100ns Typical.
  • Minimum Off-Time: 100ns Typical.
  • Internal Soft-Start.
  • ±2% 0.6V Reference.
  • RoHS-Compliant and Halogen-Free.
  • Compact SOT23-6 Package.

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Datasheet Details

Part number SY21222
Manufacturer Silergy
File Size 1.26 MB
Description Step-Up Regulator
Datasheet download datasheet SY21222 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SY21222 High Efficiency 1MHz, 2A Current Limit, Step-Up Regulator General Description The SY21222 high efficiency DC-to-DC step-up regulator operates using current mode control, and can deliver 2A current over a wide input voltage range from 3V to 33V. It integrates an N-channel MOSFET with low 200mΩ RDS(ON) to minimize conduction loss. The 1MHz switching frequency and internal compensation reduce external inductor and capacitor sizes, and the built-in internal soft-start circuitry minimizes inrush current at startup. The SY21222 is available in a compact SOT23-6 package. Features ● 3V to 33V Input Voltage Range ● 33V Maximum VOUT ● 2A Internal MSOFET Current Limit ● 5µA Shutdown Current (Typ.) ● 100µA Iq (Typ.