TPS2547RTER - USB Charging Port Controller, 3A Power Switch | TI
MPN: TPS2547RTER ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.57 | $1.57 |
| 10 | $1.41 | $14.10 |
| 100 | $1.13 | $113.00 |
| 500 | $0.97 | $485.00 |
| 1,000 | $0.85 | $850.00 |
| 3,000 | $0.72 | $2,160.00 |
TPS2547RTER Overview
A USB charging port controller (also called a USB power switch with charging logic) is a hot-swap switch with onboard firmware/hardware that emulates the proprietary charging signatures required by phones and tablets, such as Apple 2.4 A, Samsung 2.0 A, and Chinese YD/T 1591-2009. It sits in the system hierarchy between the upstream DC supply and a downstream USB receptacle, re-muxing the D+/D- lines between the USB 2.0 data path and the charging-detect block, while also providing overcurrent, over-temperature, and under-voltage lockout protection.
Key features of the TPS2547 include an 8 kV ESD rating on the DM/DP pins, an output discharge function for clean disconnection, and UL recognition under file E169910 (CB certification pending). The internal 1:1 N-channel MOSFET switch keeps R(on) low to minimize voltage drop at the 3 A load, while the integrated detection engine automatically cycles through CDP (Charging Downstream Port), DCP (Dedicated Charging Port), and proprietary modes until the connected portable device begins drawing current. Quiescent current is specified at 2 uA (disabled) and 270 uA (enabled).
Architecturally the TPS2547 combines a USB 2.0 high-speed switch, a current-limit/protection block, and a BC1.2 state machine in a single die. The TPS2547RTER is pin-for-pin compatible with the TPS2543 and TPS2546 (same 16-WQFN 3x3 mm footprint) per the TI datasheet, enabling direct drop-in upgrades for existing designs. The device is targeted at 5 V system rails typical of USB ports.
Typical applications include USB charging ports in laptops, desktops, universal wall charging adapters, and USB hubs. The integrated load detection allows the system to enumerate only when a charging-compliant device is attached, simplifying USB-IF compliance testing for downstream products.
When designing with the TPS2547RTER, route the DM/DP data lines through the part with controlled-impedance traces (90 ohm differential) and place the input/output bulk capacitors as close to the IN and OUT pins as possible. Thermal performance at 3 A continuous load in this 16-pin WQFN requires careful PCB thermal design; a 4-layer board with a ground-plane copper pour is recommended.
This page synthesizes distributor pricing, drop-in alternatives across the TPS2543/TPS2546/TPS2547 family, and practical layout notes not found in the manufacturer datasheet.
Drop-in alternatives for TPS2547RTER — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TPS2547RTER (same form factor and footprint) — differing in Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS2543RTER
✅ Drop-In📋 Reference alternative (not in catalog)
TPS2546RTER
✅ Drop-In📋 Reference alternative (not in catalog)
TPS2547RTET
✅ Drop-In📋 Reference alternative (not in catalog)
TPS2547RTER
✅ Drop-In✓ In Stock
$0.72 / Unit
View Datasheet →STUSB4500QTR
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →TPS2547RTER Maximum Ratings & Electrical Characteristics
| Function | USB Charging Port Controller and Power Switch |
| Switch Type | 1:1 N-Channel |
| Number of Outputs | 1 |
| Output Current (Max) | 3 A |
| Output Current Range | 0.2 A to 3 A |
| Input Voltage (Max) | 5.5 V |
| Quiescent Current (Disabled) | 2 uA |
| Quiescent Current (Enabled) | 270 uA |
| ESD Rating (DM/DP) | 8 kV HBM |
| USB Data Switch | USB 2.0 High-Speed (D+/D-) |
| Charging Standards | BC1.2 CDP/DCP, YD/T 1591-2009, Auto non-BC1.2 modes |
| Operating Temperature | -40 C to +125 C |
| Package | 16-WQFN (3.00 mm x 3.00 mm), exposed pad |
| Mounting Type | Surface Mount |
| Protection Features | Overcurrent, Over-temperature, Under-voltage lockout, Output discharge |
| UL Recognition | E169910 (CB Certified - Pending) |
| RoHS Status | Compliant |
TPS2547RTER Pin Configuration
| Pin 1 | OUT — Power switch output to VBUS |
| Pin 2 | OUT — Power switch output to VBUS (parallel with pin 1) |
| Pin 3 | GND — Ground reference |
| Pin 4 | IN — 5V supply input |
| Pin 5 | IN — 5V supply input (parallel with pin 4) |
| Pin 6 | EN — Active-high logic enable |
| Pin 7 | ILIM — Current-limit set resistor to GND |
| Pin 8 | FLG — Open-drain fault indicator (overcurrent/UVLO/OTP) |
| Pin 9 | CTL0 — Charge-mode select input bit 0 |
| Pin 10 | CTL1 — Charge-mode select input bit 1 |
| Pin 11 | D- — USB D- data line (side A, to host or connector) |
| Pin 12 | D+ — USB D+ data line (side A, to host or connector) |
| Pin 13 | DP — USB D+ line at port side (to connector) |
| Pin 14 | DM — USB D- line at port side (to connector) |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | NC — Not connected (per datasheet) |
Typical Applications
TPS2547RTER is suitable for 6 applications: USB Charging Ports in Laptops and Desktops, Universal Wall Charging Adapters, USB Hubs with Charging Ports, Automotive Infotainment USB Ports, Industrial PCs and Point-of-Sale Terminals, Docking Stations and Port Replicators.
USB Charging Ports in Laptops and Desktops
The TPS2547RTER is purpose-built for the downstream USB-A ports on laptops and desktops where simultaneous data sync and high-current charging are required. Its integrated USB 2.0 high-speed switch multiplexes the D+/D- lines between the host controller and the BC1.2 charging state machine without external FETs or muxes; the part automatically transitions to CDP/DCP/auto-mode when a charging-capable portable device is detected, then back to data when a USB-IF compliant device enumerates. The 3 A continuous rating at 5 V supports modern tablet fast-charge protocols, while the 8 kV HBM ESD on DM/DP protects against hot-plug transients from the cable mate. Designers should keep the IN and OUT traces on the top layer to minimize parasitic inductance and avoid stubs in the 90 ohm differential DP/DM pair.
Recommended
Universal Wall Charging Adapters
In multi-port universal wall adapters, the TPS2547RTER enables a single USB-A port to charge phones, tablets, e-readers and Bluetooth headsets using one device rather than several detection ICs. The integrated auto-mode engine cycles through Apple 2.4 A, Samsung 2.0 A, YD/T 1591-2009 (Chinese), and BC1.2 CDP/DCP until the sink asserts pull-up currents that indicate a successful handshake. The output-discharge function actively bleeds VBUS when the device is unplugged, simplifying safety certification for the adapter. With 2 uA disabled quiescent current, the TPS2547 contributes negligible standby drain - critical for meeting Energy Star and EU Code of Conduct no-load limits. A typical design uses one TPS2547RTER per USB-A port with a shared 5 V rail coming from the AC-DC flyback converter output.
Recommended
USB Hubs with Charging Ports
Self-powered USB hubs use the TPS2547RTER to add Battery Charging Spec 1.2 behavior to one or more ports without complicating the hub core logic. The 16-pin WQFN footprint shares board space with smaller hub controllers like the TUSB2046B, and the integrated protection set (overcurrent, over-temperature, UVLO, output discharge) reduces downstream fuse and TVS component count. With 3 A continuous capability the port can charge a tablet even while the hub upstream port is suspended; with 0.2 A minimum detection, the part can distinguish a no-load cable from a sink and avoid spurious wake events in low-power states. Designers should allocate at least 100 mm^2 of copper pour on the OUT pin for thermal relief at full 3 A.
Recommended
Automotive Infotainment USB Ports
In automotive head units and rear-seat entertainment modules, the TPS2547RTER provides the USB charging port function for back-seat USB-A jacks rated 5 V up to 3 A. The -40 C to +125 C operating range covers the worst-case cabin conditions, and the integrated over-temperature protection allows the part to gracefully fold back current at high ambient while still re-attempting full current once the die cools. Note: automotive-grade AEC-Q100 qualification requires checking the device-specific datasheet - the standard TPS2547RTER is industrial-grade; for automotive use, choose a Q1 suffix variant. The 8 kV DM/DP ESD helps absorb hot-plug transients from consumer cables without external TVS arrays.
Recommended
Industrial PCs and Point-of-Sale Terminals
Industrial PCs, kiosks, and point-of-sale terminals use the TPS2547RTER to provide a charging-capable USB port that doubles as a data port for barcode scanners and receipt printers. The 3 A rating covers modern tablet-based POS terminals used in retail; the integrated data switch eliminates a separate 2:1 mux that would otherwise be needed when the user wants to charge while presenting a credit card through an MSR. The wide -40 C to +125 C industrial temperature range supports outdoor and semi-outdoor kiosks without de-rating. The UL file E169910 status simplifies end-equipment safety certification for the kiosk, an important consideration for retail chains that require UL-listed subsystems.
Recommended
Docking Stations and Port Replicators
Docking stations leverage the TPS2547RTER for always-on charging USB-A ports even when the host laptop is disconnected, since the part supports 5.5 V VBUS input from the dock's 5 V supply rail directly. The output-discharge function ensures a clean VBUS ramp when a device is unplugged, avoiding back-feeding and reset glitches on downstream devices that share the 5 V rail. The compact 3x3 mm WQFN footprint allows the part to be placed near each port without consuming scarce PCB real estate. The 0.2 A minimum current detection ensures that legacy USB-A peripherals that draw less than 200 mA are correctly enumerated without spurious sleep-mode triggers on the host dock controller.
Recommended
Recommended Products Summary
Engineering reference data for TPS2547RTER — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS2543RTER | TPS2546RTER | TPS2547RTET |
|---|---|---|---|---|
| Package | 16-WQFN (3x3 mm) RTER | 16-WQFN (3x3 mm) - same | 16-WQFN (3x3 mm) - same | 16-WQFN (3x3 mm) - same (mini-reel) |
| Brand | Texas Instruments | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same |
| Output Current (Max) | 3.0 A | 3.0 A | 3.0 A | 3.0 A |
| Input Voltage (Max) | 5.5 V | 5.5 V | 5.5 V | 5.5 V |
| Non-BC1.2 Auto-Mode (Apple/Samsung/YD/T) | Yes | No | No | Yes |
| Quiescent Current (Disabled) | 2 uA | 2 uA | 2 uA | 2 uA |
| ESD Rating (DM/DP) | 8 kV HBM | 8 kV HBM | 8 kV HBM | 8 kV HBM |
| USB Data Switch | USB 2.0 High-Speed | USB 2.0 High-Speed | USB 2.0 High-Speed | USB 2.0 High-Speed |
| Output Discharge | Yes | Yes | Yes | Yes |
| Standard Reel Quantity | 3000 | 3000 | 3000 | 250 (mini-reel) |
Key Differentiators
- Automatic non-BC1.2 charging-mode detection (Apple/Samsung/YD/T 1591-2009) (vs TPS2543RTER)
- Pin-compatible upgrade over TPS2546 with broader charging signature coverage (vs TPS2546RTER)
- Compact 3x3 mm WQFN with integrated USB 2.0 mux and BC1.2 state machine (vs STUSB4500QTR)
- Output-discharge function on disconnect (vs Discreet MOSFET + external BC1.2 controller solutions)
Design Notes
Estimated: at 3 A continuous load on the 16-WQFN (3x3 mm) package, the part dissipates P_D = I^2 * R_DS(on). With a typical VBUS of 5 V and VBUS-ON = 4.7 V, internal switch loss is around I*drop = 0.9 W. The 3x3 mm WQFN has a theta_JA of approximately 45 C/W on a 2-layer 1-oz board, leading to a 40 C rise above ambient. At 85 C ambient this would push the junction to about 125 C - right at the limit. For 3 A continuous at high ambient, use a 4-layer board with at least 100 mm^2 copper pour on the OUT/IN pads, which lowers theta_JA to ~30 C/W. Recommended: heatsinking copper on top exposed pad (pin 17) for full 3 A across the industrial temperature range.
Route DM/DP as a 90 ohm differential pair with no stubs, keeping length match to within 150 mil. Place the TPS2547RTER within 5 mm of the USB-A connector to minimize stub length on DM/DP. Place the CIN bulk capacitor within 3 mm of the IN pin and the COUT within 3 mm of the OUT pin; use 22 uF X5R minimum to suppress inrush-induced voltage dips when a heavy load is hot-plugged. Keep the ILIM resistor directly adjacent to pin 7 with a clean ground return.
Do not exceed the 5.5 V absolute maximum on IN - transients above 6 V will trigger UVLO and may damage the internal clamp. Never disable the EN pin while a high-capacitance load is drawing current, as the inductive kick on OUT can exceed the absolute-max rating on the OUT pin. For automotive 12 V systems, a separate pre-regulator (TPS7A4001 or similar) is needed upstream. The CTL0/CTL1 mode-select pins must be tied to a logic rail with a pull-up resistor - floating them can cause the part to default to an unintended charging mode at power-up.
The TPS2547RTER is a linear hot-swap switch rather than a switching regulator, so it generates no high-frequency EMI on VBUS. The DM/DP analog switch adds ~5 ohm of series resistance but is designed to maintain USB 2.0 high-speed signal integrity. For systems requiring CISPR 22/EN 55022 Class B on the 5 V rail, add a common-mode choke (such as the ACM2012) on VBUS and a 100 nF Y-cap on the chassis ground. The 8 kV DM/DP ESD rating greatly reduces in-system ESD events and may eliminate the need for external TVS arrays on the connector.
Compliance Information
TI TPS2547RTER is industrial-grade, not AEC-Q100 qualified - choose a Q1 suffix variant for automotive end equipment. UL recognized under file E169910 (CB certification pending per datasheet).
