TPS2001CDGKR - 2A USB Power Switch, 72mΩ, 5V VSSOP-8 | TI
部品番号: TPS2001CDGKR ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0.95 | $0.95 |
| 10 | $0.86 | $8.60 |
| 100 | $0.71 | $71.00 |
| 500 | $0.58 | $290.00 |
| 1,000 | $0.49 | $490.00 |
| 3,000 | $0.41 | $1,230.00 |
TPS2001CDGKR 概要
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.
ドロップイン代替品: TPS2001CDGKR — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
TPS2001CDGK
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS2001CDGKT
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS2001CDGKR-COM
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS2065CDGKR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS2041CDGKR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS2051CDGKR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS2001CDGKR 最大定格＆電気的特性
| 機能 | USB Power-Distribution Switch |
| トポロジー | High-Side N-Channel MOSFET |
| 出力数 | 1 |
| 入力電圧範囲 | 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 |
| 熱シャットダウン | Yes (auto-restart) |
| 動作温度 | -40 °C to +125 °C |
| パッケージ | 8-VSSOP (DGK) 3.0 mm body |
| 実装タイプ | Surface Mount |
| MSLレベル | 2 (1 year floor life) |
| RoHS ステータス | Compliant |
TPS2001CDGKR ピン構成
| ピン 1 | GND — Ground |
| ピン 2 | IN — Input supply voltage (4.5 V to 5.5 V) |
| ピン 3 | IN — Input supply voltage (must connect to pin 2 on PCB) |
| ピン 4 | EN — Enable input, active-high |
| ピン 5 | OC — Over-current fault output, active-low, open-drain |
| ピン 6 | OUT — Switched output to load |
| ピン 7 | OUT — Switched output to load (must connect to pin 6 on PCB) |
| ピン 8 | GND — Ground (must connect to pin 1 on PCB) |
主な用途
TPS2001CDGKR の用途: 7 件s: 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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TPS2001CDGKR — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | 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 |
主な差別化要因
- 2 A continuous current capability with 72 mΩ Rds(on) （vs TPS2065CDGKR)
- True reverse-current blocking when disabled （vs TPS2041CDGKR)
- Active-high enable for power sequencing （vs TPS2051CDGKR)
- Industrial temperature range (-40 °C to +125 °C) （vs TPS2001CDGKR vs. commercial-grade clones)
設計ノート
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.
コンプライアンス情報
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.
