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Texas Instruments TPS22950CDDCR
- Part No.:
- TPS22950CDDCR
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
TPS22950CDDCR.pdf
- Description:
- 5.5-V, 2-A, 40-M LOAD SWITCH WIT
- Quantity:
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Inventory:4,227
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Product details
Overview
TPS22950CDDCR from Texas Instruments is a single-channel adjustable current-limited load switch with 34 mΩ typical RON at 5 V, 3.2-A maximum continuous output current, auto-retry overcurrent response, always-on reverse current blocking, and integrated fault indication (FLT). It operates from 1.8 V to 5.5 V input and is used in power rail sequencing for portable computing peripherals.
For engineers reviewing the TPS22950CDDCR datasheet, TPS22950CDDCR pinout, TPS22950CDDCR application, or TPS22950CDDCR equivalent, key selection criteria include its adjustable ILIM range (0.5–3.5 A), thermal shutdown (170°C), quick output discharge (150 Ω), smart ON-pin pulldown (500 kΩ), and SOT-23-6 (DDC) package compatibility with space-constrained PCB layouts.
Technical Context
The TPS22950CDDCR integrates a low-RON N-channel MOSFET with precision current-sense amplifier and analog control logic to enforce programmable current limiting via external RILIM. Its auto-retry behavior cycles ON/OFF during sustained overloads until fault removal, while maintaining reverse current blocking when VOUT > VVIN.
It features active fault signaling through open-drain FLT pin (low during thermal shutdown or reverse current), slow turn-ON timing (800 µs at 5 V) to limit inrush, and smart ON-pin pulldown that disengages after VIH threshold is met-enabling direct interface with 1.8-V/3.3-V GPIO without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V–5.5 V - supports single-supply operation across USB, Li-ion, and regulated DC rails. |
| Max Continuous Output Current | 3.2 A - enables high-current peripheral switching (e.g., SSD modules, display interfaces). |
| RON @ 5 V | 34 mΩ (typ.) - minimizes conduction loss (≤170 mW at 2.3 A), reducing thermal stress on PCB. |
| Current Limit Range | 0.5 A–3.5 A (adjustable via RILIM) - allows precise protection tuning for diverse loads without redesign. |
| Thermal Shutdown Threshold | 170°C (rising), 150°C (hysteresis) - provides robust self-protection during sustained overload or poor heatsinking. |
| Turn-ON Time @ 5 V | 800 µs (typ.) - controls inrush dI/dt to prevent input rail collapse during hot-plug events. |
| Reverse Current Blocking | Always-on, 44 mV activation threshold - prevents backfeed from downstream supplies without external diodes. |
| Quiescent Current | 40 µA (typ.) - enables ultra-low standby power in battery-backed systems. |
Pinout & Package
TPS22950CDDCR uses the DDC (SOT-23-6) package: 2.90 mm × 2.80 mm body, 0.95 mm max height, lead pitch 0.95 mm, 6-pin configuration with GND on pin 3 for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ON (Pin 1) | Digital enable input | Active-high control; smart pulldown (500 kΩ) prevents floating during power-up; compatible with 1.8-V logic. |
| VIN (Pin 2) | Power input | Switch input node; accepts 1.8–5.5 V; requires local 1-µF decoupling per layout guidelines. |
| GND (Pin 3) | Ground reference | Primary thermal and signal return; must connect to solid ground plane for RθJA = 104.8°C/W performance. |
| ILIM (Pin 4) | Current limit programming | Connects to GND via resistor to set ILIM (0.5–3.5 A); no external voltage source required. |
| VOUT (Pin 5) | Switched output | Delivers regulated load current; includes QOD (150 Ω) to discharge output within milliseconds when disabled. |
| FLT (Pin 6) | Fault indicator | Open-drain output pulled low during thermal shutdown or reverse current; requires external pull-up for host MCU monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable current limiting | 0.5–3.5 A via single external resistor - eliminates need for multiple fixed-limit switches in BOM. |
| Auto-retry overcurrent response | Self-cycling ON/OFF during sustained overload - maintains system visibility without latching off critical rails. |
| Always-on reverse current blocking | 44-mV activation threshold, 3-µs response - protects upstream sources without adding Schottky diode losses. |
| Quick output discharge (QOD) | 150 Ω (at 5 V) - discharges VOUT to <100 mV within ~1 ms, preventing unintended wake-up or latch-up. |
| Smart ON-pin pulldown | 500 kΩ typ. resistance, disengages at VIH - ensures reliable startup sequencing without external components. |
| Fault indication with open-drain FLT | Low-active signal during thermal shutdown or reverse current - enables real-time system-level fault logging. |
Applications
| USB-C Peripheral Power Switching | SSD Module Enable Control |
|---|---|
|
Use Scenario: Enables/disables 5-V power to USB-C accessories (docks, adapters) with inrush control and short-circuit protection. IC Role / Device Role / Timing Role: Load switch providing controlled power delivery, current limiting, and fault reporting to host controller. Use Value: Prevents bus voltage droop during plug-in, blocks reverse current from accessory batteries, and signals faults via FLT pin to suspend enumeration. |
Use Scenario: Powers NVMe SSD modules in ultrabooks where rail sequencing and overcurrent protection are mandatory. IC Role / Device Role / Timing Role: High-current (≥2 A) power switch with programmable ILIM and thermal shutdown for storage subsystems. Use Value: Ensures SSD receives clean, sequenced power; limits fault current to avoid motherboard damage; QOD prevents data corruption on hot removal. |
| Display Interface Power Management | Game Console Accessory Port Protection |
|
Use Scenario: Supplies 3.3-V or 5-V power to eDP/LVDS display panels with soft-start and reverse-blocking. IC Role / Device Role / Timing Role: Adjustable current-limited switch managing panel backlight and timing controller power domains. Use Value: Eliminates need for discrete FET + sense resistor + comparator; tON = 550 µs at 3.3 V ensures glitch-free panel initialization. |
Use Scenario: Protects game console USB/proprietary accessory ports against shorts, overloads, and backfeed from powered controllers. IC Role / Device Role / Timing Role: Robust load switch with UL 2367 recognition (66 mA–2.46 A) for consumer safety compliance. Use Value: Meets IEC/UL safety requirements without external circuitry; auto-retry allows recovery after accidental short without user intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS22950DDCR | Same DDC package but lower IMAX (2.7 A); ILIM range starts at 0.05 A (not 0.5 A); no UL 2367 certification. | Suitable for lower-current rails (e.g., sensor clusters) where wide ILIM tuning is needed but safety certification isn't required. | Select TPS22950DDCR only if 2.7-A rating suffices and sub-0.5-A current limiting is necessary. |
| TPS22975YFPR | 4-A rated, 19-mΩ RON, WSON-8 package; includes enable-controlled QOD disable; no reverse current blocking. | Better for high-efficiency, high-current rails (e.g., GPU memory) where reverse blocking is handled elsewhere. | Choose TPS22975YFPR when lower conduction loss and higher current headroom outweigh need for integrated RCB. |
Compared with TPS22950DDCR and TPS22975YFPR, the TPS22950CDDCR uniquely combines UL 2367 certification, 3.2-A capability, auto-retry behavior, and always-on reverse current blocking in a compact SOT-23-6 footprint-making it optimal for safety-critical, space-constrained portable power rails.
Availability
TPS22950CDDCR is available at Aetrix Electronics and suitable for USB-C accessory power management, SSD module enable control, display interface power sequencing, and game console accessory port protection requiring stable component supply and full lifecycle support.
Supply support for TPS22950CDDCR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TPS22950x family targets compact, high-reliability load switching in portable devices-emphasizing adjustable protection, minimal bill-of-materials, and safety-certified operation for consumer-facing power rails.
FAQ
What is the maximum continuous output current rating for the TPS22950CDDCR?
The TPS22950CDDCR has a maximum continuous output current rating of 3.2 A, as specified in Section 7.1 Absolute Maximum Ratings of the datasheet. This value is validated across the full operating temperature range (–40°C to 125°C) and assumes proper PCB thermal design per the recommended layout guidelines.
Does the TPS22950CDDCR provide reverse current blocking, and how does it behave?
Yes, the TPS22950CDDCR provides always-on reverse current blocking with a 44-mV activation threshold and 3-µs response time. When VOUT exceeds VVIN, the device actively blocks reverse current flow through the internal FET-no external diode is required. This function remains active regardless of ON pin state.
How is the current limit adjusted on the TPS22950CDDCR?
The current limit on the TPS22950CDDCR is adjusted by connecting an external resistor (RILIM) between the ILIM pin and GND. Using the equation ILIM = 1.18 × (RILIM)–1.072, a 2.21-kΩ resistor sets a typical ILIM of 0.5 A, while a 610-Ω resistor yields ~2.0 A. The ILIM pin draws negligible current and requires no voltage source.
What is the thermal shutdown behavior of the TPS22950CDDCR?
The TPS22950CDDCR triggers thermal shutdown at 170°C (rising) and resumes operation once junction temperature falls to 150°C (15°C hysteresis). During shutdown, the FLT pin is pulled low and VOUT is disconnected. The device automatically attempts restart after cooldown-consistent with its auto-retry overcurrent response.
Can the TPS22950CDDCR be used with 1.8-V GPIO control signals?
Yes, the TPS22950CDDCR supports 1.8-V GPIO directly: its ON pin VIH threshold is 1 V (min), and it features a smart pulldown (500 kΩ typ.) that holds the pin low during power-up. Once driven above VIH, the pulldown disconnects-eliminating static current draw and enabling seamless interface with low-voltage microcontrollers.
TPS22950CDDCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Series:
- *
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- -
- Number of Outputs:
- -
- Ratio - Input:Output:
- -
- Output Configuration:
- -
- Output Type:
- -
- Interface:
- -
- Voltage - Load:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Current - Output (Max):
- -
- Rds On (Typ):
- -
- Input Type:
- -
- Features:
- -
- Fault Protection:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
TPS22950CDDCR FAQ
1.How can I place an order for TPS22950CDDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS22950CDDCR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS22950CDDCR reliable?
The price and inventory of TPS22950CDDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS22950CDDCR is usually 5 days.
3.What payment methods are accepted for TPS22950CDDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS22950CDDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS22950CDDCR?
TPS22950CDDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS22950CDDCR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS22950CDDCR?
For technical support, including TPS22950CDDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS22950CDDCR requirements.
6.How does Aetrix verify that TPS22950CDDCR is sourced from the original manufacturer or authorized distributors?
All TPS22950CDDCR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS22950CDDCR meets industry standards.
7.What is the process for return or replacement of TPS22950CDDCR?
All TPS22950CDDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS22950CDDCR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS22950CDDCR part is unused and in its original packaging.
Return procedure for TPS22950CDDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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