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NCP1521B - Step-Down DC-DC Converter

Description

Pin No.

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

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

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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.
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