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ISL9444 - Synchronous Step-Down PWM Controller

General Description

Output of the auxiliary power monitor.

PFO goes high if the voltage on PFI is greater than 1.2V (typical).

PFO outputs low.

Key Features

  • Three Integrated Synchronous Buck PWM Controllers - Internal Bootstrap Diodes - Independent Programmable Output Voltage - Independent Power-Good Indicators, Soft-Starting and Tracking.
  • Power Failure Monitor.
  • Light Load Efficiency Enhancement - Low Ripple Diode Emulation Mode with Pulse Skipping.
  • Supports Pre-Biased Output.
  • Programmable Frequency: 200kHz to 1200kHz.
  • Adaptive Shoot-through Protection.
  • Out-of-Phase Switching (0°/180°/0.

📥 Download Datasheet

Datasheet Details

Part number ISL9444
Manufacturer Renesas
File Size 1.42 MB
Description Synchronous Step-Down PWM Controller
Datasheet download datasheet ISL9444 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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DATASHEET ISL9444 Triple, 180° Out-of-Phase, Synchronous Step-Down PWM Controller FN7665 Rev 3.00 May 29, 2012 The ISL9444 is a triple-output synchronous buck controller that integrates three PWM controllers which are fully featured and designed to provide multi-rail power for use in products such as cable and satellite set-top boxes, VoIP gateways, cable modems, and other home connectivity products as well as a variety of industrial and general purpose applications. Each output is adjustable down to 0.7V. The PWMs are synchronized at 180° out-of-phase, thus reducing the input RMS current and ripple voltage.