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LM2745 - Synchronous Buck Controller

Description

The LM2745/8 are high-speed synchronous buck regulator controllers with an accurate feedback voltage accuracy of ±1.5%.

It can provide simple down conversion to output voltages as low as 0.6V.

Features

  • 1.
  • 2 Switching Frequency from 50 kHz to 1 MHz.
  • Switching Frequency Synchronize Range 250 kHz to 1 MHz (LM2745 Only).
  • Startup with a Pre-biased Output Load.
  • Power Stage Input Voltage from 1V to 14V.
  • Control Stage Input Voltage from 3V to 6V.
  • Output Voltage Adjustable Down to 0.6V.
  • Power Good Flag and Shutdown.
  • Output Overvoltage and Undervoltage Detection.
  • ±1.5% Feedback Voltage Accuracy Over Temperature.
  • Low.

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Full PDF Text Transcription

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LM2745, LM2748 www.ti.com SNOSAL2E – APRIL 2005 – REVISED APRIL 2013 LM2745 / LM2748 Synchronous Buck Controller with Pre-Bias Startup, and Optional Clock Synchronization Check for Samples: LM2745, LM2748 FEATURES 1 •2 Switching Frequency from 50 kHz to 1 MHz • Switching Frequency Synchronize Range 250 kHz to 1 MHz (LM2745 Only) • Startup with a Pre-biased Output Load • Power Stage Input Voltage from 1V to 14V • Control Stage Input Voltage from 3V to 6V • Output Voltage Adjustable Down to 0.6V • Power Good Flag and Shutdown • Output Overvoltage and Undervoltage Detection • ±1.
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