Overview

The SLG55544 is a combination of current-limited USB port power switch with a USB 2.0 high-speed data line (D+/D-) switch and USB charging port identification circuit. The recommended applications include notebook PCs and other intelligent USB host devices. The wide bandwidth (2.6 GHz) data‑line switch also features low capacitance and low on resistance, allowing signals to pass with minimum edge and phase distortion. The SLG55544 monitors D+ and D-, providing the correct hand-shaking protocol with compliant client devices.

SLG55544 Block Diagram
SLG55544 Block Diagram
  • Meets Battery Charging Specification BC1.2 for DCP and CDP
  • Meets Chinese Telecommunications Industry Standard YD/T 1591-2009
  • Supports Non-BC 1.2 charging modes via Automatic selection
  • Support Smart-CDP function - Automatic CDP/SDP mode support for Always data Communication
  • Compatible with USB 2.0/3.0 power switch requirements
  • 73 mΩ (typ) high side MOSFET
  • Adjustable Current Limit up to 3.0 A (typ)
  • Pb-Free / RoHS Compliant
  • Halogen-Free
  • TQFN-16 Package / MSL-1
  • UL Listed and CB File No. E468659

Applications

  • USB Ports/Hubs
  • Notebook PCs
  • Power bank
  • Car charger
  • Universal Wall Charging Adapter

Documentation

= Featured Documentation
Type Title Date
Datasheet
SLG55544 Datasheet
PDF 439 KB
Other
USB Routing Layout Guidelines for Dialog SLG5554x BCID ICs
PDF 261 KB
Brochure
BCID Brochure
PDF 457 KB
Certificate
UL Certificate of Compliance for SLG55544, SLG55546, SLGC55544C
PDF 236 KB
Certificate
CB Test Certificate for SLG55544, SLG55546, SLGC55544
PDF 178 KB
5 items

Design & Development

Software Downloads
Type Title Date
PCB Design Files
Altium BCID CAD Symbols and Footprints
ZIP 24 KB
PCB Design Files
Eagle BCID CAD Symbols and Footprints
ZIP 4 KB
2 items

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Buy / Sample
    Part Number
    SLG55544V
    circleActive
    memory
    view_in_ar
    		TQFN-16 Tape & Reel 1
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product