Product details

Vin (Min) (V) 4.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 3 Current limit (A) 0.25 to 3.4 Product type Charge port controller Operating temperature range (C) -40 to 125 Enable Active High Number of switches 1 Rating Catalog
Vin (Min) (V) 4.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 3 Current limit (A) 0.25 to 3.4 Product type Charge port controller Operating temperature range (C) -40 to 125 Enable Active High Number of switches 1 Rating Catalog
WQFN (RTE) 16 9 mm² 3 x 3
  • 4.5-V to 6.5-V Operating Range
  • 47-mΩ (typical) High-Side MOSFET
  • 3-A Maximum Continuous Output Current
  • ±5% CS Output for Cable Compensation
  • CDP Mode per USB Battery Charging Specification 1.2
  • Automatic DCP Modes Selection:
    • Shorted Mode per BC1.2 and YD/T 1591-2009
    • 2.7-V Divider 3 Mode
    • 1.2-V Mode
  • D+ and D– Client Mode for System Update
  • D+ and D– Short-to-VBUS Protection
  • D+ and D– ±8-kV Contact and ±15-kV Air Discharge ESD Rating (IEC 61000-4-2)
  • UL Recognition and CB Certification Pending
  • –40°C to 125°C Junction Operating Temperature
  • 16-Pin QFN (3-mm × 3-mm) Package
  • 4.5-V to 6.5-V Operating Range
  • 47-mΩ (typical) High-Side MOSFET
  • 3-A Maximum Continuous Output Current
  • ±5% CS Output for Cable Compensation
  • CDP Mode per USB Battery Charging Specification 1.2
  • Automatic DCP Modes Selection:
    • Shorted Mode per BC1.2 and YD/T 1591-2009
    • 2.7-V Divider 3 Mode
    • 1.2-V Mode
  • D+ and D– Client Mode for System Update
  • D+ and D– Short-to-VBUS Protection
  • D+ and D– ±8-kV Contact and ±15-kV Air Discharge ESD Rating (IEC 61000-4-2)
  • UL Recognition and CB Certification Pending
  • –40°C to 125°C Junction Operating Temperature
  • 16-Pin QFN (3-mm × 3-mm) Package

The TPS2549 device is a USB charging port controller and power switch with a current-sense output that is able to control an upstream supply. This allows it to maintain 5 V at the USB port even with heavy charging currents. This is important in systems with long USB cables where significant voltage drops can occur while fast-charging portable devices.

The TP2549 47-mΩ power switch has two selectable, programmable current limits that support port power management by providing a lower current limit that can be used when adjacent ports are experiencing heavy loads. This is important in systems with multiple ports and an upstream supply unable to provide full current to all ports simultaneously.

The DCP_Auto scheme detects and selects the proper D+ and D– settings to communicate with the attached device, so that it can fast-charge at full current. The integrated CDP detection enables up to 1.5-A fast charging of most portable devices with simultaneous data communication.

The unique client-mode feature allows software updates to client devices, but avoids power conflicts by turning off the internal power switch while keeping the data line connection.

Additionally, the TPS2549 device integrates short-to-VBUS protection for D+ and D– to prevent damage when D+ and/or D– unexpectedly short to VBUS. To save space in the application, the TPS2549 device also integrates ESD protection to pass IEC61000-4-2 without external circuitry on D+ and D–.

The TPS2549 device is a USB charging port controller and power switch with a current-sense output that is able to control an upstream supply. This allows it to maintain 5 V at the USB port even with heavy charging currents. This is important in systems with long USB cables where significant voltage drops can occur while fast-charging portable devices.

The TP2549 47-mΩ power switch has two selectable, programmable current limits that support port power management by providing a lower current limit that can be used when adjacent ports are experiencing heavy loads. This is important in systems with multiple ports and an upstream supply unable to provide full current to all ports simultaneously.

The DCP_Auto scheme detects and selects the proper D+ and D– settings to communicate with the attached device, so that it can fast-charge at full current. The integrated CDP detection enables up to 1.5-A fast charging of most portable devices with simultaneous data communication.

The unique client-mode feature allows software updates to client devices, but avoids power conflicts by turning off the internal power switch while keeping the data line connection.

Additionally, the TPS2549 device integrates short-to-VBUS protection for D+ and D– to prevent damage when D+ and/or D– unexpectedly short to VBUS. To save space in the application, the TPS2549 device also integrates ESD protection to pass IEC61000-4-2 without external circuitry on D+ and D–.

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Technical documentation

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Type Title Date
* Data sheet TPS2549 USB Charging Port Controller and Power Switch With Cable Compensation datasheet 27 Sep 2016
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Application note TPS2549 CDP-SDP Auto Switch 19 Jul 2017
Application note TPS254x Eye Diagram Performance Test 19 Jul 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS2549Q1EVM-729 — TPS2549Q1EVM Automotive USB Charging Port Controller & Power Switch Evaluation Module

TPS2549Q1EVM-729 is a USB charging port controller with an integrated power switch and USB 2.0 high-speed data line (DP/DM) switches. TPS2549Q1EVM-729 provides the electrical signatures on DP_IN and DM_IN to support all current charging schemes. TPS2549Q1EVM-729 incorporates USB cable voltage drop (...)

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Reference designs

PMP40269 — USB Type-C™ DFP 5V 1.5A + USB Type-A 5V 2.4A Car Charger Reference Design

PMP40269 is a dual port car charger reference design. It has a USB Type-C™ port and a USB type-A port. The USB Type-C port can provide 5V 1.5A to USB Type-C device. The type-A port can provide 5V 2.4A, it is also capable of compensating for the effects on voltage droop when a smartphone or (...)
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WQFN (RTE) 16 View options

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