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Texas Instruments TPS22950CQDDCRQ1
- Part No.:
- TPS22950CQDDCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS22950CQDDCRQ1.pdf
- Description:
- AUTOMOTIVE 5.5-V, 2.7-A, 34-M LO
- Quantity:
- Payment:
- Shipping:
Inventory:1,446
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Product details
Overview
TPS22950CQDDCRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive load switch with adjustable current limiting (0.05–3.5 A), 34-mΩ RON at 5 V, true reverse current blocking, and integrated fault indication. It operates from 1.8 V to 5.5 V input and delivers up to 2.7 A continuous output current in infotainment power rail control.
For engineers reviewing the TPS22950CQDDCRQ1 datasheet, TPS22950CQDDCRQ1 pinout, TPS22950CQDDCRQ1 application, or TPS22950CQDDCRQ1 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade thermal shutdown behavior, and real-world implementation guidance for body control modules and ADAS ECUs.
Technical Context
The TPS22950CQDDCRQ1 integrates a single N-channel MOSFET with digitally controlled ON/OFF switching, smart pulldown on the ON pin (500 kΩ typ), and analog current-limit adjustment via external resistor on ILIM. Its reverse current blocking activates at 44 mV differential (VOUT > VVIN) with 3 µs response time and holds leakage below 38 µA at 125 °C.
Thermal shutdown triggers at 170 °C (rising) with 20 °C hysteresis, and fault reporting uses open-drain FLT with 0.1 V low-level output at 1 mA sink. Turn-on timing is voltage-dependent: 1037 µs at 5 V, 892 µs at 3.3 V, and 730 µs at 1.8 V - enabling precise inrush control across automotive supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V – 5.5 V: Supports full automotive battery range including cold-crank (1.8 V) and load-dump transients (5.5 V). |
| Continuous Output Current | 2.7 A max: Enables direct driving of medium-power loads like display backlight drivers or sensor clusters without external FETs. |
| RON @ 5 V | 34 mΩ typ: Limits conduction loss to ≤450 mW at 2.7 A, reducing thermal stress in SOT-23-THIN (DDC) package. |
| Adjustable Current Limit | 0.05 A – 3.5 A via ILIM resistor: Allows precise overcurrent protection tuning for diverse downstream loads without redesign. |
| Reverse Current Blocking | Always-on RCB with 44 mV activation threshold: Prevents backfeed from auxiliary supplies during system sleep or partial power-down. |
| Fault Indication | Open-drain FLT pin with 0.1 V low-level at 1 mA: Directly interfaces with microcontroller GPIO for real-time thermal or short-circuit detection. |
| Quiescent Current | 40 µA typ in ON state: Minimizes standby power draw in always-on vehicle domains such as gateway modules. |
Pinout & Package
SOT-23-THIN (DDC) 6-pin package, 2.90 mm × 2.80 mm body size, 1.1 mm max height, JEDEC-compliant footprint with Q3 pin-1 quadrant orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ON (Pin 1) | Digital enable input | Active-high control with smart pulldown (500 kΩ typ); prevents floating during power-up sequencing. |
| VIN (Pin 2) | Power input | Primary supply connection; supports 1.8–5.5 V with internal ESD protection per AEC-Q100. |
| GND (Pin 3) | Ground reference | Common return path for VIN, VOUT, ILIM, and FLT; critical for thermal dissipation and noise immunity. |
| ILIM (Pin 4) | Current limit programming | Analog input tied to GND via resistor; sets ILIM = 1.18 × RILIM−1.072 (A) for precise fault threshold calibration. |
| VOUT (Pin 5) | Switched output | Drives load; features quick discharge (130 Ω typ at 5 V) to safely collapse output voltage when disabled. |
| FLT (Pin 6) | Fault status output | Open-drain signal pulled low during thermal shutdown or reverse-current events; requires external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40 °C to 125 °C ambient), UL 2367 certified for ILIM = 66 mA to 2.46 A. |
| Adjustable current limiting | Configurable 0.05–3.5 A range using single external resistor on ILIM pin - no firmware or external IC needed. |
| True reverse current blocking | Hardware-enforced blocking activated at 44 mV VOUT–VVIN differential; eliminates need for external diode or controller logic. |
| Quick output discharge | 130 Ω internal discharge path at 5 V enables rapid VOUT decay (<1 ms typical), preventing latch-up in cascaded power domains. |
| Smart ON pin pulldown | 500 kΩ internal pulldown active only when ON ≤ VIL, eliminating external bias resistors while ensuring defined startup state. |
Applications
| Infotainment Power Sequencing | ADAS Sensor Cluster Supply |
|---|---|
|
Use Scenario: Controlled power-up of head unit audio processors and touch controllers after MCU initialization. IC Role / Device Role / Timing Role: Load switch enabling timed, inrush-limited delivery of 5 V to sensitive SoCs and ADCs. Use Value: 832 µs slow turn-on at 5 V prevents supply droop; FLT pin signals overcurrent to host MCU before damage occurs. |
Use Scenario: Isolating surround-view camera ECU power domain during vehicle sleep mode. IC Role / Device Role / Timing Role: Reverse-current-blocking switch maintaining VOUT = 0 V when main bus drops below 12 V. Use Value: Always-on RCB blocks backfeed from camera module capacitors, preserving battery life and meeting ISO 16750-2 requirements. |
| Body Control Module Subsystem | Automotive Cluster Display Driver |
|
Use Scenario: Independent power control of LIN transceivers and door-lock actuators within BCM. IC Role / Device Role / Timing Role: Adjustable-current-limiting switch protecting 12 V–5 V DC/DC converter outputs from shorted loads. Use Value: ILIM set to 1.25 A via 1.15 kΩ resistor limits fault energy while allowing normal 800 mA actuator surge. |
Use Scenario: Driving TFT-LCD backlight LED strings requiring stable 5 V with fast disable capability. IC Role / Device Role / Timing Role: High-side switch with QOD discharging VOUT to GND in <1 ms upon MCU command. Use Value: 130 Ω QOD resistance ensures display turns off cleanly without ghosting or residual glow during ignition-off transition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS22975QDGKRQ1 | Higher RON (48 mΩ), fixed 2.5-A current limit, no ILIM pin; includes enable-controlled QOD disable. | Lacks programmable current limiting; suited for cost-sensitive designs where fixed protection suffices. | Select when adjustable ILIM is unnecessary and board space allows larger DGS (8-pin VSSOP) package. |
| TPS22965DSGRQ1 | Lower RON (19 mΩ), 4-A rating, dual-channel, no RCB; requires external reverse-blocking diode. | Supports higher current but adds BOM cost and layout complexity for reverse-current mitigation. | Choose for high-power dual-rail systems where independent channel control outweighs RCB omission. |
Compared with TPS22950CQDDCRQ1, the TPS22975QDGKRQ1 trades adjustability for simpler implementation, while the TPS22965DSGRQ1 offers higher current capacity at the expense of added external components and loss of integrated reverse-current blocking.
Availability
TPS22950CQDDCRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS electronic control units, and body control modules requiring stable component supply with AEC-Q100 compliance and production traceability.
Supply support for TPS22950CQDDCRQ1 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 delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.
The TPS22950-Q1 belongs to TI's automotive-qualified load switch product line, designed specifically for robust power rail control in safety-critical vehicle subsystems with stringent thermal, reliability, and fault-diagnostic requirements.
FAQ
What is the maximum continuous output current rating for the TPS22950CQDDCRQ1?
The TPS22950CQDDCRQ1 is rated for 2.7 A continuous output current under recommended operating conditions (TA ≤ 125 °C). This value is specified in the Absolute Maximum Ratings table and validated across the full –40 °C to 125 °C ambient temperature range. The device also supports 4.1 A pulsed current at 2% duty cycle with TJ = 85 °C, enabling brief surge handling during motor or solenoid activation.
How does the TPS22950CQDDCRQ1 implement reverse current blocking?
The TPS22950CQDDCRQ1 provides hardware-based reverse current blocking (RCB) that activates automatically when VOUT exceeds VVIN by ≥44 mV. It responds within 3 µs, turning off the internal FET to block backflow. Unlike passive diodes, this feature operates without forward voltage drop or power loss during normal forward conduction, and remains active even when the ON pin is low - ensuring fail-safe isolation.
Can the TPS22950CQDDCRQ1 be used outside automotive applications?
Yes, the TPS22950CQDDCRQ1 can be used in non-automotive applications, but its AEC-Q100 qualification, extended temperature range (–40 °C to 125 °C), and UL 2367 recognition make it especially valuable in industrial, medical, or harsh-environment systems requiring high reliability. Designers should verify that all specifications - including thermal derating and fault response - meet their specific use case, as automotive qualification does not imply automatic suitability for all safety-critical domains.
What is the purpose of the ILIM pin on the TPS22950CQDDCRQ1?
The ILIM pin on the TPS22950CQDDCRQ1 sets the output current limit by connecting an external resistor to GND. Using the formula ILIM = 1.18 × RILIM−1.072, designers select resistor values to achieve precise thresholds from 0.05 A to 3.5 A. This enables tailored overcurrent protection without firmware intervention - critical for deterministic fault response in automotive subsystems where software delays are unacceptable.
Does the TPS22950CQDDCRQ1 require an external pull-up resistor on the FLT pin?
Yes, the FLT pin on the TPS22950CQDDCRQ1 is an open-drain output and requires an external pull-up resistor to a valid logic-high voltage (e.g., 3.3 V or 5 V). When no fault is present, FLT remains high-impedance; during thermal shutdown or reverse-current events, it pulls low to ≤0.1 V at 1 mA sink. Typical pull-up values range from 4.7 kΩ to 10 kΩ, balancing speed, power, and noise immunity for MCU GPIO interfacing.
TPS22950CQDDCRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- P-Channel
- Interface:
- On/Off
- Voltage - Load:
- 0V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Current - Output (Max):
- 2.7A
- Rds On (Typ):
- 34mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Reverse Current, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS22950CQDDCRQ1 FAQ
1.How can I place an order for TPS22950CQDDCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS22950CQDDCRQ1 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 TPS22950CQDDCRQ1 reliable?
The price and inventory of TPS22950CQDDCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS22950CQDDCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS22950CQDDCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS22950CQDDCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS22950CQDDCRQ1?
TPS22950CQDDCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS22950CQDDCRQ1 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 TPS22950CQDDCRQ1?
For technical support, including TPS22950CQDDCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS22950CQDDCRQ1 requirements.
6.How does Aetrix verify that TPS22950CQDDCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS22950CQDDCRQ1 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 TPS22950CQDDCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS22950CQDDCRQ1?
All TPS22950CQDDCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS22950CQDDCRQ1, 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 TPS22950CQDDCRQ1 part is unused and in its original packaging.
Return procedure for TPS22950CQDDCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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