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Automotive USB Host Charger With Short-to-VBATT Protection

Availability: 555


Package | PIN: WQFN (RVC) | 20
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $3.67
10-24 $3.30
25-99 $3.07
100-249 $2.69
250-499 $2.53
500-749 $2.15
750-999 $1.81
1000+ $1.73


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C AmbientOperating Temperature Range
    • Device HBM ESD ClassificationLevel H2
    • Device CDM ESD Classification LevelC5
  • 4.5-V to 6.5-V Input Operating Range
  • 3.5-V (typ) UVLO to Support Start-Stop
  • Integrated 45-mΩ (typ.) High-Side MOSFET
  • 3.2-A Maximum Continuous Output Current
  • VBUS ±5% Cable Compensation Accuracy at Connector
  • Supports USB BC 1.2 CDP and SDP Modes
  • Short-to-Battery Protection on OUT, DP_IN, and DM_IN Pins
  • DP_IN and DM_IN IEC 61000-4-2 Rated
    • ±8-kV Contact and ±15-kV Air Discharge
  • 20-Pin QFN (3-mm × 4-mm) Package

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Texas Instruments  TPS254900AIRVCTQ1

The TPS254900A-Q1 device is a USB charging-port controller and power switch withshort-to-battery protection. This feature provides protection on OUT, DM_IN and DP_IN. These threepins withstand voltage up to 18 V.

The internal MOSFET turns off quickly when the short-to-battery condition occurs. Rapidturnoff is very important to protect the upstream DC-DC converter, processor, or hub datalines.

The TPS254900A-Q1 has a low UVLO of 3.5 V, so that the power switch does not turn offduring start-stop.

The TPS254900A-Q1 45-mΩ power switch has two selectable, adjustable current limits thatsupport port power management by changing to a lower current limit when adjacent ports areexperiencing heavy loads. This is important in systems with multiple ports and upstream powersupplies with limited capacity.

The TPS254900A-Q1 device has a current-sense output that is able to control an upstreamsupply, which allows it to maintain 5 V at the USB port even with heavy charging currents. Thisfeature is important in systems with long USB cables where significant voltage drops can occur withfast-charging portable devices.

A current monitor allows a system to monitor the load current in real time by monitoringthe IMON voltage. The current monitor is very useful and can be used for dynamic port-powermanagement.

The TPS254900A-Q1 device also provides ESD protection capability per IEC 61000-4-2, level4 on DP_IN and DM_IN.