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G5603 - High-Speed Step-Down Controller

Download the G5603 datasheet PDF. This datasheet also covers the G5603-GlobalMixed variant, as both devices belong to the same high-speed step-down controller family and are provided as variant models within a single manufacturer datasheet.

General Description

G5603 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.

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.
  • 4.5V to 24V Battery Input Range.
  • Integrated Boost Diode.
  • OVP & UVP.
  • 1.7ms Soft-Start.
  • Drives Large Synchronous-Rectifier FETs.
  • Power-Good Indicator.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (G5603-GlobalMixed-modeTechnology.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number G5603
Manufacturer Global Mixed-mode Technology
File Size 45.78 KB
Description High-Speed Step-Down Controller
Datasheet download datasheet G5603 Datasheet

Full PDF Text Transcription for G5603 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for G5603. For precise diagrams, and layout, please refer to the original PDF.

Global Mixed-mode Technology Inc. G5603 High-Speed Step-Down Controller Features „ Ultra-High Efficiency „ No Current-Sense Resistor (Lossless ILIMIT) „ Quasi-PWM with 10...

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ency „ 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 „ 4.5V to 24V Battery Input Range „ Integrated Boost Diode „ OVP & UVP „ 1.7ms Soft-Start „ Drives Large Synchronous-Rectifier FETs „ Power-Good Indicator Applications „ Notebook Computers „ CPU Core Supply „ I/O Supply „ Chipset/RAM Supply as Low as 0.75V „ Networking Power Supply General Description G5603 uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients