TPS2001CDGKR - 2A USB Power Switch, 72mΩ, 5V VSSOP-8 | TI
MPN: TPS2001CDGKR ✓ Hoạt độngTPS2001CDGKR Tóm tắt
A power-distribution switch (also called a USB power switch or load switch) is a smart high-side MOSFET combined with protection circuitry. It sits between a system power rail and a downstream port, providing controlled turn-on, fault isolation, and current limiting. Within the broader taxonomy, a load switch sits beneath hot-swap controllers and above discrete MOSFETs in the power-management hierarchy, typically integrating an N-channel MOSFET, charge pump, current sense amplifier, and fault logic into one IC.
Key features of the TPS2001CDGKR include a fixed 2 A current-limit threshold with ±20% accuracy, fast 2 µs short-circuit response, true reverse-current blocking when disabled, an output discharge resistor for safe USB VBUS decay, and an active-high enable input for power sequencing. The device asserts an active-low fault flag (OC) whenever the output exceeds the current-limit threshold or experiences a reverse-voltage condition, simplifying host monitoring in compliant USB ports.
The device uses an internal charge pump to drive the gate of the N-channel MOSFET, achieving low Rds(on) without requiring an external bootstrap supply. Built-in thermal protection shuts down the switch when junction temperature rises excessively, and auto-restart resumes operation once the fault clears. The 8-VSSOP (DGK) footprint (3.0 mm body width) is compatible with industry-standard pinouts, allowing direct layout reuse across the TPS20xxC family.
Typical applications include USB 2.0/3.0 downstream ports on motherboards and hubs, charging ports for tablets and smartphones, set-top boxes, and any 5 V rail requiring inrush and short-circuit protection. The combination of high current limit, low on-resistance, and true reverse blocking makes it a strong fit for hot-plug VBUS distribution where back-feeding from peripherals must be prevented.
When designing with the TPS2001CDGKR, observe input-capacitor placement guidelines and ensure the trace between IN and GND pins is short and wide to handle inrush transients. Decoupling with a 1 µF ceramic between IN and GND is strongly recommended to keep the device stable during load steps.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho TPS2001CDGKR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
TPS2001CDGK
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS2001CDGKT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS2001CDGKR-COM
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS2065CDGKR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS2041CDGKR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS2051CDGKR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TPS2001CDGKR Tỷ lệ tối đa & tính chất điện
| Chức năng | USB Power-Distribution Switch |
| Cấu trúc | High-Side N-Channel MOSFET |
| Số lượng đầu ra | 1 |
| Phạm vi điện áp đầu vào | 4.5 V to 5.5 V |
| Continuous Load Current | 2 A |
| Current Limit (Typical) | 2.9 A |
| Current Limit Accuracy | ±20% (fixed) |
| On-Resistance (Rds(on)) | 72 mΩ (typical) |
| Short-Circuit Response Time | 2 µs |
| Enable Input | Active-High |
| Output Discharge | Yes (internal pull-down) |
| Reverse Current Blocking | Yes (true reverse blocking when disabled) |
| Fault Output (OC) | Active-Low, open-drain |
| Tắt nhiệt | Yes (auto-restart) |
| Nhiệt độ hoạt động | -40 °C to +125 °C |
| Hộp | 8-VSSOP (DGK) 3.0 mm body |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 2 (1 year floor life) |
| Trạng thái RoHS | Compliant |
Cấu hình chân TPS2001CDGKR
| Chân 1 | GND — Ground |
| Chân 2 | IN — Input supply voltage (4.5 V to 5.5 V) |
| Chân 3 | IN — Input supply voltage (must connect to pin 2 on PCB) |
| Chân 4 | EN — Enable input, active-high |
| Chân 5 | OC — Over-current fault output, active-low, open-drain |
| Chân 6 | OUT — Switched output to load |
| Chân 7 | OUT — Switched output to load (must connect to pin 6 on PCB) |
| Chân 8 | GND — Ground (must connect to pin 1 on PCB) |
Ứng dụng tiêu biểu
TPS2001CDGKR phù hợp cho 7 Áp dụngs: USB 2.0/3.0 Downstream VBUS Port, Tablet and Smartphone Charging Port, Set-Top Box / HDMI Stick Power Distribution, Industrial 5 V Load Switch, Raspberry Pi / SBC 5 V Power Input Switch, Gaming Console USB-A Charging Port (Repair Replacement), Docking Station USB Port Power Path.
USB 2.0/3.0 Downstream VBUS Port
The TPS2001CDGKR provides 5 V VBUS power switching for USB downstream ports on motherboards, hubs, and docking stations. Its 2.9 A typical current limit exceeds the 2 A continuous rating required for USB Battery Charging 1.2 dedicated charging ports. With 72 mΩ Rds(on), conduction loss is approximately 144 mW at 2 A load, well within thermal limits. The output discharge resistor ensures VBUS safely decays below 0.8 V before the port enumerates, meeting USB-IF compliance. True reverse-current blocking prevents peripherals from back-feeding into the host rail when the port is disabled.
Được đề xuất
Tablet and Smartphone Charging Port
Charging ports on tablets, e-readers, and 5 V accessories benefit from the TPS2001CDGKR's controlled inrush and fault protection. Heavy capacitive loads (100 µF+ on the device side) cause large transient currents at plug-in; the part's 2 µs short-circuit response and fixed 2.9 A current limit isolate the upstream regulator. The active-high EN input allows power sequencing tied to system standby rails. Reverse blocking protects the battery from accidental back-powering when the charger is unplugged while the device remains active.
Được đề xuất
Set-Top Box / HDMI Stick Power Distribution
Set-top boxes and HDMI streaming sticks use the TPS2001CDGKR to switch 5 V rails feeding USB ports and external peripherals. The compact 8-VSSOP (DGK) package fits space-constrained PCBAs, while the integrated thermal shutdown auto-restarts after sustained overloads clear. When the SoC signals standby via a GPIO, the active-high EN pin powers down the USB rail cleanly, dropping quiescent current. Reverse blocking ensures that any HDMI-powered accessory cannot back-feed into the main 5 V supply during shutdown.
Được đề xuất
Industrial 5 V Load Switch
In industrial control modules, the TPS2001CDGKR isolates downstream sensors, actuators, or PLC interface boards from the main 5 V supply. Its -40 °C to +125 °C operating range covers cabinet and outdoor enclosure temperatures. The fault output (OC) routes to a microcontroller GPIO for diagnostics, supporting predictive maintenance. The 2 µs short-circuit response prevents nuisance tripping on motor inrush, while the ±20% accurate current limit prevents nuisance tripping from line transients.
Được đề xuất
Raspberry Pi / SBC 5 V Power Input Switch
Single-board computers like the Raspberry Pi 4 and similar SBCs accept 5 V via USB-C or barrel jack and need protected power inputs. The TPS2001CDGKR provides a robust in-line switch that limits inrush and isolates the regulator from the upstream cable. The output discharge resistor prevents residual VBUS from confusing the SoC's power-on logic. Using an active-high EN tied to a PGOOD signal enables sequenced startup of the 5 V rail and downstream regulators.
Được đề xuất
Gaming Console USB-A Charging Port (Repair Replacement)
Repair technicians replace failed TPS2001CDGKR chips in gaming console USB-A charging ports using the same VSSOP-8 footprint. The factory 72 mΩ Rds(on), 2.9 A current limit, and active-high EN polarity match the original design exactly, so no firmware changes are needed. The output discharge resistor maintains USB-IF enumeration behavior, while reverse blocking protects the console's standby rail when peripherals are unplugged.
Được đề xuất
Docking Station USB Port Power Path
Laptop docking stations use the TPS2001CDGKR to switch USB-A downstream ports fed from a 12 V or 19 V adapter via an intermediate 5 V buck. The 72 mΩ Rds(on) keeps conduction loss acceptable even with the full 2 A delivered downstream. EN tied to dock detection logic ensures ports power up only when the laptop is properly connected, while the active-low OC pin signals the dock MCU to disable charging if a fault occurs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TPS2001CDGKR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | TPS2001CDGK | TPS2001CDGKT | TPS2065CDGKR | TPS2041CDGKR | TPS2051CDGKR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-VSSOP (DGK) 3.0 mm | 8-VSSOP (DGK) 3.0 mm - same | 8-VSSOP (DGK) 3.0 mm - same | 8-VSSOP (DGK) 3.0 mm - same | 8-VSSOP (DGK) 3.0 mm - same | 8-VSSOP (DGK) 3.0 mm - same |
| Continuous Load Current | 2 A | 2 A | 2 A | 1 A (-50%) | 0.5 A (-75%) | 0.5 A (-75%) |
| Current Limit (Typical) | 2.9 A | 2.9 A | 2.9 A | 1.5 A | 0.9 A | 0.9 A |
| On-Resistance (Rds(on)) | 72 mΩ | 72 mΩ | 72 mΩ | 70 mΩ | 80 mΩ | 80 mΩ |
| Enable Polarity | Active-High | Active-High | Active-High | Active-High | Active-High | Active-Low |
| Output Discharge | Yes | Yes | Yes | Yes | Yes | Yes |
| Reverse Current Blocking | Yes (true reverse blocking) | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
| RoHS Compliance | Yes | Yes | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- 2 A continuous current capability with 72 mΩ Rds(on) (vsTPS2065CDGKR)
- True reverse-current blocking when disabled (vsTPS2041CDGKR)
- Active-high enable for power sequencing (vsTPS2051CDGKR)
- Industrial temperature range (-40 °C to +125 °C) (vsTPS2001CDGKR vs. commercial-grade clones)
Ghi chú thiết kế
Estimated: at VIN=5 V, VOUT=5 V, IOUT=2 A continuous, the TPS2001CDGKR dissipates approximately I² × Rds(on) = 4 × 0.072 = 288 mW. The 8-VSSOP (DGK) has a typical theta_JA around 130–150 °C/W (per JEDEC EIA/JESD51 4-layer board), giving a junction temperature rise of 38–43 °C above ambient. Above 1.5 A continuous in still air, route copper pours on both IN and OUT pins to spread heat; otherwise the device enters thermal shutdown near 150 °C junction.
Both IN pins (2 and 3) must be connected on the PCB to share the load current; the same applies to OUT pins (6 and 7). Use a 1 µF X7R ceramic bypass capacitor as close as possible to the IN pin pair, with a short wide trace to GND. The exposed thermal pad is not present on this package - heat is dissipated only through the lead frame. Keep the OUT trace short and wide to minimize voltage drop at 2 A.
Do not exceed 5.5 V on IN - the part is designed for USB VBUS rails only. Do not load OUT with capacitance larger than 200 µF unless you verify inrush timing against the 2 µs short-circuit response; large bulk caps can cause false current-limit tripping on plug-in. The OC pin is open-drain - a 10 kΩ pull-up to a logic rail is required. Reversing EN polarity will leave the switch permanently off if you confuse active-high TPS2001C with active-low TPS2051C.
The OC (over-current) flag debounces internally but can glitch briefly during inrush. Adding a 100 kΩ pull-up and a small RC filter (10 kΩ + 100 nF) on the OC line smooths transitions before reaching a microcontroller. When chaining multiple TPS20xxC switches on a hub, stagger EN pin assertions by 100–200 ms to limit cumulative inrush on the upstream 5 V rail and avoid USB-IF VBUS droop below 4.75 V.
Per TI TPS2001C datasheet application notes, keep the GND return path short and direct - use a continuous ground plane beneath the device. Route the high-current OUT trace on an outer layer with at least 0.5 oz copper, ideally 1 oz, to handle 2 A continuous without significant voltage drop. The EN pin is logic-level compatible and can be driven directly from a 3.3 V GPIO; no level shifter needed.
Thông tin tuân thủ
RoHS and REACH compliance per TI product page. Halogen-free status not explicitly stated in the verified data; treated as 'unknown'. The TPS2001C family is not AEC-Q100 qualified - for automotive applications, consider the TPS2051-Q1 or TPS2001B-Q1 family. Conflict minerals statement available on TI.com.
