TI TPS254900IRVCRQ1

The TPS254900-Q1 is a USB charging port controller and power switch with battery short-circuit protection. This protection covers the OUT, DM_IN, and DP_IN pins. These three pins can withstand voltages up to 18V. When a battery short circuit occurs, the internal MOSFET turns off rapidly. This rapid turn-off capability is critical for protecting upstream DC-DC converters, processors, or hub data lines.

The TPS254900-Q1 45mΩ power switch features two selectable adjustable current limit settings, enabling port power management by switching to a lower current limit when adjacent ports carry heavy loads. This capability is essential for systems with multiple ports and limited upstream power capacity.

The TPS254900-Q1 provides a current sense output that controls upstream power, maintaining 5V at the USB port even when charging current is excessive. This feature is critical for systems with long USB cables, where significant voltage drops occur during rapid charging of portable devices.

With the current monitor, the system can monitor load current in real time by observing the IMON voltage. The current monitor is useful for dynamic port power management.

The TPS254900-Q1 also provides Level 4 ESD protection per IEC 61000-4-2 for the DP_IN and DM_IN pins.

• Qualified to AEC-Q100 with the following results:
• Device HBM ESD classification level H2
• Device CDM ESD classification level C5
• 4.5V to 6.5V input operating voltage range
• Integrated 45mΩ (typical) high-side MOSFET
• Maximum continuous switching current up to 3A
• Cable compensation accuracy on connector VBUS±5%
• Supports USB BC 1.2 CDP and SDP modes
• Battery short-circuit protection on OUT, DP_IN, and DM_IN pins
• Protection level on DP_IN and DM_IN compliant with IEC 61000-4-2
• ±8kV contact discharge and ±15kV air discharge
• 20-pin 4mm×3mm QFN package

• Automotive USB charging ports (host and hub)
• Automotive-grade USB protection