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G5617B Datasheet Programmable Output High-Speed Step-Down Controller

Manufacturer: Global Mixed-mode Technology

Download the G5617B datasheet PDF. This datasheet also includes the G5617A-GlobalMixed variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (G5617A-GlobalMixed-modeTechnology.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number G5617B
Manufacturer Global Mixed-mode Technology
File Size 26.69 KB
Description Programmable Output High-Speed Step-Down Controller
Download G5617B Download (PDF)

General Description

G5617A/G5617B PWM controller uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency.

The G5617A/G5617B achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs.

Efficiency is further enhanced by an ability to drive very large synchronous rectifier MOSFETs.

Overview

Global Mixed-mode Technology G5617A/G5617B Programmable Output High-Speed Step-Down Controller for Notebook.

Key Features

  • Ultra-High Efficiency.
  • No Current-Sense Resistor (Lossless ILIMIT).
  • Quasi-PWM with 100ns Load-Step Response.
  • 1% VOUT Accuracy Over Line and Load.
  • 0.75V to 3.6V Adjustable Output Range.
  • Dynamic Voltage Scaling by G0 and G1 Inputs.
  • 4.5V to 24V Battery Input Range.
  • OVP & UVP.
  • Built-in BST Diode.
  • 1.7ms Soft-Start.
  • Drives Large Synchronous-Rectifier FETs.
  • Power-Good Indicator.
  • G0/G1 H.