The SLGC55544C 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. 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 SLGC55544C monitors D+ and D-, providing the correct hand-shaking protocol with compliant client devices.


  • 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
    • DM/DP Divider Modes 2.7V/2.0V (1A) & 2.0V/2.7V (2A)
    • DM/DP 1.2V Mode
  • 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)
  • Dynamic level detect circuit for inrush current
  • Pb-Free / RoHS Compliant
  • Halogen-Free
  • TQFN-16 Package / MSL-1
  • UL Listed and CB File No. E468659




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


Type Title Date
Datasheet PDF 546 KB
Brochure PDF 5.49 MB 日本語
Other PDF 261 KB
Brochure PDF 457 KB
Certificate PDF 236 KB
Certificate PDF 178 KB
6 items

Design & Development

Software & Tools

Software Downloads

Type Title Date
PCB Design Files ZIP 24 KB
PCB Design Files ZIP 4 KB
2 items