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Texas Instruments TPS62242QDDCRQ1
- Part No.:
- TPS62242QDDCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
TPS62242QDDCRQ1.pdf
- Description:
- IC REG BUCK 1.2V 300MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
TPS62242QDDCRQ1 from Texas Instruments is an AEC-Q100 Grade 2 qualified synchronous buck converter delivering up to 300 mA at a fixed 1.2 V output, operating from 2 V to 6 V input with 2.25 MHz fixed-frequency PWM and automatic power-save mode (PFM) for high efficiency across load range - used in automotive body control modules and ADAS front camera power rails.
For engineers reviewing the TPS62242QDDCRQ1 datasheet, TPS62242QDDCRQ1 pinout, TPS62242QDDCRQ1 application, or TPS62242QDDCRQ1 equivalent, key selection criteria include its 15 µA quiescent current in PFM mode, 100% duty-cycle low-dropout capability, ±1.5% output voltage accuracy in PWM mode, and SOT-5 (DDC) package compatibility with <1-mm solution height requirements.
Technical Context
The TPS62242QDDCRQ1 implements voltage-mode control with input voltage feed-forward for fast line/load regulation and uses internal high-side (240–480 mΩ) and low-side (180–380 mΩ) MOSFETs in a synchronous topology. It transitions automatically between PWM and PFM modes based on load current, with discontinuous conduction detection triggering PFM entry.
Its functional safety features include undervoltage lockout (1.85 V falling threshold), thermal shutdown (150 °C typical trip, 14 °C hysteresis), and short-circuit protection via dual current-limit comparators monitoring both MOSFETs - all validated per AEC-Q100 requirements for automotive Grade 2 (–40 °C to +115 °C ambient).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±1.5% in PWM mode - eliminates external feedback resistors and ensures stable core supply for microcontrollers and image sensors. |
| Input Voltage Range | 2.0 V to 6.0 V - supports single Li-Ion (2.7–4.2 V), two/three-cell alkaline, and extended-range battery systems without pre-regulation. |
| Max Output Current | 300 mA continuous - sufficient for powering automotive MCUs, camera ISPs, and CAN transceivers in compact modules. |
| Switching Frequency | 2.25 MHz fixed - enables use of small 2.2 µH inductors and 10 µF ceramic capacitors for <1-mm profile designs. |
| Quiescent Current | 15 µA typical in PFM mode - extends battery life in always-on ADAS subsystems such as parking assist sensors. |
| Efficiency Peak | Up to 94% - achieved at mid-load with 3.6 V input, reducing thermal load in sealed automotive enclosures. |
| Shutdown Current | <1 µA at 25 °C - enables deep sleep states in gateway ECUs without significant battery drain over weeks. |
| Operating Temperature | –40 °C to +115 °C ambient - meets AEC-Q100 Grade 2 requirement for under-hood and cabin-mounted electronics. |
Pinout & Package
TPS62242QDDCRQ1 is housed in a 5-pin SOT (DDC) package measuring 2.90 mm × 1.60 mm with exposed thermal pad - optimized for compact automotive PCB layouts and thermal dissipation in constrained spaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input supply | Accepts 2–6 V DC; requires local 4.7 µF ceramic decoupling to suppress switching noise and support peak current demands. |
| GND (Pin 2) | Power ground reference | Primary return path for high-frequency switch currents; must be connected to low-impedance ground plane beneath thermal pad. |
| EN (Pin 3) | Enable control input | Active-high logic; pulled high to enable regulation, pulled low to enter sub-1 µA shutdown - used for power sequencing with other rails. |
| FB (Pin 4) | Feedback node | Internally tied to 1.2 V output; no external resistor divider needed - simplifies layout and improves stability vs adjustable variants. |
| SW (Pin 5) | Switch node | Connects to inductor; carries high di/dt square wave; requires tight loop routing with minimal trace length to reduce EMI and voltage spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 2 (–40 °C to +115 °C), HBM ±2 kV, CDM ±750 V - certified for body electronics and ADAS deployment without additional qualification. |
| Power-save mode (PFM) | Automatic transition below ~10 mA load; maintains >85% efficiency down to 100 µA while limiting output ripple via single-threshold comparator. |
| 100% duty-cycle operation | Enables dropout as low as VIN – VOUT ≈ IO × (RDS(on)HS + RDC(L)) - extends usable battery range in Li-Ion systems down to ~1.8 V input. |
| Soft-start ramp | 250 µs (5% to 95% VOUT); limits inrush current during power-up - prevents brownout in shared battery rails feeding multiple converters. |
| Synchronous rectification | Integrated high/low-side MOSFETs eliminate external diode losses - improves light-load efficiency and reduces thermal footprint vs asynchronous designs. |
| Thermal shutdown protection | 150 °C trip with 14 °C hysteresis - safeguards against sustained overload or poor heatsinking in enclosed automotive housings. |
Applications
| Body Control Module (BCM) | Front Camera Power Supply |
|---|---|
|
Use Scenario: Centralized vehicle body controller managing door locks, lighting, and window motors. IC Role / Device Role / Timing Role: Primary 1.2 V core supply for 32-bit automotive MCU (e.g., S32K144) and CAN FD transceiver. Use Value: 300 mA capacity and 2.25 MHz switching allow integration into space-constrained BCM PCBs while maintaining >90% efficiency across 5–300 mA dynamic load profiles. |
Use Scenario: Compact front-facing ADAS camera module requiring low-noise, stable 1.2 V for image signal processor (ISP) and CMOS sensor interface. IC Role / Device Role / Timing Role: Point-of-load regulator converting 5 V domain rail to clean 1.2 V core voltage with minimal EMI impact on analog video paths. Use Value: Fixed 1.2 V output and ±1.5% accuracy ensure ISP clock domain stability; 15 µA quiescent current supports always-on parking assist functionality. |
| Infotainment System SoC Core Rail | Park Assist Sensor Hub |
|
Use Scenario: In-dash infotainment head unit with ARM-based application processor and GPU. IC Role / Device Role / Timing Role: Secondary core rail supplying 1.2 V to processor subsystem when main PMIC is in low-power state. Use Value: 2.25 MHz operation avoids AM radio band interference; 100% duty-cycle mode sustains regulation during battery sag events (e.g., cold cranking). |
Use Scenario: Rear-view parking assistance system with ultrasonic sensor array and microcontroller. IC Role / Device Role / Timing Role: Standby power source enabling wake-on-radar detection while main system is asleep. Use Value: Sub-1 µA shutdown current prevents parasitic drain over multi-week vehicle idle periods; AEC-Q100 qualification ensures reliability in trunk-mounted environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62240QDDCRQ1 | Same pinout and package; fixed 1.0 V output instead of 1.2 V - identical electrical specs otherwise. | Used where lower core voltage is required (e.g., certain ARM Cortex-M7 derivatives), not drop-in for 1.2 V systems. | Select only if target SoC/MCU mandates 1.0 V nominal core voltage; verify VDD tolerance and startup timing compatibility. |
| LMQ66430QRNXTQ1 | 3 A rated, 2.1–6 V input, adjustable output (0.8–5.5 V); larger 16-pin QFN package; higher IQ (26 µA). | Targets higher-current ADAS domains (e.g., surround-view ECU); not suitable for space-constrained 300 mA nodes. | Choose when future scalability to >500 mA or programmable output is required; avoid for cost- and size-sensitive 1.2 V/300 mA applications. |
Compared with TPS62242QDDCRQ1, TPS62240QDDCRQ1 offers identical form-factor and performance but targets 1.0 V systems, whereas LMQ66430QRNXTQ1 provides higher current and flexibility at the expense of size, cost, and quiescent current - making TPS62242QDDCRQ1 optimal for fixed 1.2 V, space-constrained automotive loads ≤300 mA.
Availability
TPS62242QDDCRQ1 is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera modules, and infotainment SoC core rails requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TPS62242QDDCRQ1 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 leader specializing in analog, embedded processing, and automotive-grade power management ICs - with decades of experience in high-reliability automotive electronics design and manufacturing.
The TPS622xx-Q1 product line delivers compact, efficient, AEC-Q100-qualified buck converters for automotive subsystems including body control, ADAS, and infotainment - engineered specifically for harsh environment operation and functional safety readiness.
FAQ
What is the maximum output current capability of the TPS62242QDDCRQ1?
The TPS62242QDDCRQ1 delivers up to 300 mA of continuous output current under recommended operating conditions (VIN = 2.3–6 V, TA = –40 °C to +115 °C). This rating assumes proper thermal management using the DDC package's exposed pad and adheres to the device's internal current limit of 0.56–0.84 A for both high- and low-side MOSFETs.
Does the TPS62242QDDCRQ1 require external feedback resistors?
No, the TPS62242QDDCRQ1 features a factory-trimmed 1.2 V fixed output voltage, so the FB pin is internally connected to the output. External resistors are unnecessary - this simplifies layout, improves long-term stability, and eliminates resistor tolerance errors affecting output accuracy.
How does the TPS62242QDDCRQ1 manage efficiency at light loads?
The TPS62242QDDCRQ1 automatically enters power-save mode (PFM) at light loads (<10 mA), reducing switching frequency and quiescent current to 15 µA typical. Its single-threshold PFM comparator minimizes output voltage ripple while sustaining >85% efficiency down to 100 µA output current.
What is the purpose of the EN pin on the TPS62242QDDCRQ1?
EN is an active-high enable input that controls device startup and shutdown. Pulling EN high enables regulation with soft-start; pulling EN low places TPS62242QDDCRQ1 in shutdown mode, reducing input current to <1 µA. It supports precise power sequencing in multi-rail automotive systems.
Can the TPS62242QDDCRQ1 operate with input voltages below 2.0 V?
No - the absolute minimum input voltage is 2.0 V per specifications, and undervoltage lockout disables operation below 1.85 V (falling threshold). Attempting operation below 2.0 V risks instability or failure to regulate; for sub-2 V battery applications, consider boost-buck or specialized ultra-low-VIN regulators instead of TPS62242QDDCRQ1.
TPS62242QDDCRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 300mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 115°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS62242QDDCRQ1 FAQ
1.How can I place an order for TPS62242QDDCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62242QDDCRQ1 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 TPS62242QDDCRQ1 reliable?
The price and inventory of TPS62242QDDCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62242QDDCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62242QDDCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62242QDDCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62242QDDCRQ1?
TPS62242QDDCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62242QDDCRQ1 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 TPS62242QDDCRQ1?
For technical support, including TPS62242QDDCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62242QDDCRQ1 requirements.
6.How does Aetrix verify that TPS62242QDDCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62242QDDCRQ1 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 TPS62242QDDCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62242QDDCRQ1?
All TPS62242QDDCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62242QDDCRQ1, 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 TPS62242QDDCRQ1 part is unused and in its original packaging.
Return procedure for TPS62242QDDCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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