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uP1540 - 5V/12V Synchronous-Rectified Buck Controller

General Description

The uP1540 is a compact synchronous-rectified buck controller specifically designed to operate from 5V or 12V supply voltage and to deliver high quality output voltage as low as 0.8V.

Key Features

  • include internal soft start, over/under voltage protection, over current protection and shutdown function. With aforementioned functions, this part provides customers a compact, high efficiency, well-protected and cost-effective solutions. This part is available in WDFN3x310L package. Ordering Information Features † Operates from 5V or 12V Supply Voltage.
  • 3.3V to 12V VIN Input Range.
  • 0.8V VREF with 1.0% Accuracy.
  • Support VCC = 5V, VIN = 19V † Support Stand-Alone and T.

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Datasheet Details

Part number uP1540
Manufacturer uPI Semiconductor
File Size 160.68 KB
Description 5V/12V Synchronous-Rectified Buck Controller
Datasheet download datasheet uP1540 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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uP1540 5V/12V Synchronous-Rectified Buck Controller General Description The uP1540 is a compact synchronous-rectified buck controller specifically designed to operate from 5V or 12V supply voltage and to deliver high quality output voltage as low as 0.8V. The uP1540 adopts proprietary RCOTTM technology, providing flexible selection of output LC filter and excellent transient response to load and line change. The uP1540 supports both tracking mode and stand-alone mode operation. This controller integrates internal MOSFET drivers that support 12V+12V or 5V+19V bootstrapped voltage for high efficiency power conversion. The bootstrap diode is builtin to simplify the circuit design and minimize external part count.