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NCP1521B - Step-Down DC-DC Converter

General Description

Pin No.

Power supply input for the PFET power stage, analog and digital blocks.

Key Features

  • include integrated soft.
  • start, cycle.
  • by.
  • cycle current limiting and thermal shutdown protection. The NCP1521B is available in a space saving, low profile TSOP5 package. Features.
  • Up to 96% Efficiency.
  • Best.
  • In.
  • Class Ripple, including PFM Mode.
  • Sources up to 600 mA.
  • 1.5 MHz Switching Frequency.
  • Adjustable Output Voltage from 0.9 V to 3.9 V.
  • Synchronous Rectification for Higher Efficiency.
  • 2.7 V to.

📥 Download Datasheet

Datasheet Details

Part number NCP1521B
Manufacturer onsemi
File Size 384.19 KB
Description Step-Down DC-DC Converter
Datasheet download datasheet NCP1521B 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.

View original datasheet text
Buck Converter - DC-DC 1.5 MHz, 600 mA NCP1521B The NCP1521B step−down DC−DC converter is a monolithic integrated circuit optimized for portable applications powered from one cell Li−Ion or three cell Alkaline/NiCd/NiMH batteries. The part, available in adjustable output voltage versions ranging from 0.9 V to 3.9 V, is able to deliver up to 600 mA. It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built−in 1.5 MHz (nominal) oscillator which reduces component size by allowing smaller inductors and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency. Additional features include integrated soft−start, cycle−by−cycle current limiting and thermal shutdown protection.