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Texas Instruments TPS62850240QDYCRQ1
- Part No.:
- TPS62850240QDYCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- SOT-583
- Datasheet:
-
TPS62850240QDYCRQ1.pdf
- Description:
- IC REG BUCK ADJ 2A SOT583
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
TPS62850240QDYCRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering up to 2A continuous output current, operating from 2.7V–6V input, with adjustable 0.6V–5.5V output voltage, ±1% PWM accuracy, and 17µA quiescent current - deployed in ADAS camera modules and surround-view ECUs.
For engineers reviewing the TPS62850240QDYCRQ1 datasheet, TPS62850240QDYCRQ1 pinout, TPS62850240QDYCRQ1 application, or TPS62850240QDYCRQ1 equivalent, key selection criteria include its SOT583 package footprint, 1.8–4MHz externally adjustable switching frequency, active output discharge, foldback overcurrent protection, and functional safety documentation support for ISO 26262-compliant power rail design.
Technical Context
The TPS62850240QDYCRQ1 implements peak current mode control with internal compensation selectable via COMP/FSET pin configuration (two settings optimized for 10–200µF output capacitance), enabling stable operation with low-ESR ceramic capacitors without feedforward components. Its MODE/SYNC pin supports forced PWM, PFM/PWM auto-mode transition, and external clock synchronization from 1.8MHz to 4MHz with <50µs lock time.
This device integrates precision enable logic (1.1V rising threshold, 100mV hysteresis), open-drain power-good output with window comparator (92–98% rising / 87–93% falling VFB thresholds), and thermal shutdown at 170°C with 15°C hysteresis - all qualified for –40°C to +125°C ambient operation per AEC-Q100 Grade 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports direct connection to automotive 3.3V/5V rails and battery-supervised systems with UVLO at 2.45V (rising) |
| Output Current | 2A continuous - rated for full load at TJ ≤ 125°C; enables compact power delivery for dual-core SoCs or image signal processors |
| Output Voltage Accuracy | ±1% in PWM mode - ensures tight regulation for sensitive analog/digital domain supplies without post-regulation |
| Quiescent Current | 17µA typical - sustains ultra-low standby power in always-on ADAS subsystems with minimal battery drain |
| Switching Frequency | 1.8MHz to 4MHz adjustable - allows EMI optimization and small external LC component selection (e.g., 0.47µH inductor) |
| Thermal Shutdown | 170°C junction threshold with 15°C hysteresis - provides robust overtemperature protection during transient overload or poor PCB thermal design |
| Package | SOT583 (DYC) - 2.10mm × 1.60mm body, 0.47mm pitch, 8-pin thermally enhanced footprint compatible with automated optical inspection |
Pinout & Package
SOT583 (DYC) package: 8-pin, 0.47mm pitch, 2.10mm × 1.60mm body size (including pins), exposed thermal pad on bottom for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.7V–6V supply; requires local 10µF input capacitance placed adjacent to minimize high-frequency loop inductance |
| SW | Switch node | Connects to internal high-side/low-side MOSFETs; drives external inductor; critical for EMI layout and voltage stress management |
| GND | Ground reference | Primary return path for power and control circuits; must be connected to low-impedance thermal pad and system ground plane |
| EN | Enable control | Logic-level input (1.1V threshold); supports programmable UVLO and precise power sequencing via external resistor divider |
| PG | Power-good indicator | Open-drain output signaling VOUT regulation status within ±3% window; requires external pull-up to valid rail |
| FB | Feedback input | Monitors resistive divider output; sets regulated VOUT = 0.6V × (1 + R1/R2); leakage <70nA preserves accuracy |
| COMP/FSET | Compensation & frequency set | Configures control-loop compensation and switching frequency (1.8–4MHz) via resistor to GND or direct tie to VIN/GND |
| MODE/SYNC | Operation mode control | Selects PFM/PWM (low) or forced PWM (high); accepts external sync clock 1.8–4MHz with falling-edge alignment to SW |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive infotainment and ADAS environmental requirements |
| Active output discharge | 100Ω internal discharge path - ensures rapid VOUT ramp-down during shutdown, preventing back-powering of downstream circuitry |
| Foldback overcurrent protection | Enabled in this variant - reduces switch current limit under short-circuit to limit power dissipation and improve fault tolerance |
| Pseudo-random spread spectrum | Optional via COMP/FSET configuration - lowers peak EMI emissions by up to 10dB without affecting average frequency or regulation |
| 100% duty cycle capability | Supports dropout operation down to VIN ≈ VOUT - maintains regulation during cold-crank or brownout conditions common in 12V automotive systems |
Applications
| ADAS Camera Module | Surround-View ECU |
|---|---|
Use Scenario: Powering CMOS image sensor and ISP in rear/side-view cameras with strict EMI limits and thermal constraints. IC Role / Device Role / Timing Role: Primary 1.8V/3.3V point-of-load regulator delivering 2A peak current during image capture bursts. Use Value: 17µA IQ extends battery-backed recording time; spread spectrum reduces conducted emissions below CISPR 25 Class 5 limits. |
Use Scenario: Supplying multiple vision processors and SerDes interfaces in multi-camera fusion ECUs. IC Role / Device Role / Timing Role: Synchronized buck converter operating at 2.25MHz to avoid interference with video clock domains. Use Value: External clock sync enables phase-shifted operation across 4+ rails, lowering total input ripple and easing bulk capacitor sizing. |
| Hybrid Digital Cluster | Telematics Control Unit |
Use Scenario: Generating core voltage for ARM-based cluster MCU and display controller with dynamic load steps. IC Role / Device Role / Timing Role: Adjustable-output buck supplying 1.1V–1.3V core rail with fast transient response enabled by COMP/FSET setting. Use Value: Two-stage internal compensation adapts to 10–30µF output capacitance range, ensuring stability across varying display backlight loads. |
Use Scenario: Providing isolated 3.3V/5V rails for cellular modem, GNSS receiver, and CAN FD transceiver in telematics gateway. IC Role / Device Role / Timing Role: Dual-rail solution using TPS62850240QDYCRQ1 for modem core and companion LDO for RF section. Use Value: PG output enables safe power sequencing - asserts only after both VOUT and VIN are stable, preventing modem initialization faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62850240QDRLRQ1 | SOT583 DRL package (same 2.10mm × 1.60mm body, but different pin 1 marking and thermal pad layout) | Identical electrical specs; DRL variant has JEDEC-standard thermal pad exposure and slightly higher RθJA (110°C/W vs 60°C/W on EVM) | Select DRL for legacy board compatibility or when JEDEC thermal validation is required; DYC preferred for lower thermal resistance in space-constrained layouts |
| LM61480QRNXTQ1 | 3.5A rated, 2.5–18V input, fixed 2.1MHz frequency, no spread spectrum, no foldback OCP | Broadens input range for 12V battery-derived rails; lacks foldback and SSC - less suitable for EMI-sensitive camera modules | Choose LM61480QRNXTQ1 only when higher current headroom or wider VIN is mandatory; TPS62850240QDYCRQ1 remains optimal for compact 2A ADAS rails |
Compared with TPS62850240QDYCRQ1, the DRL variant offers identical functionality in a JEDEC-standardized SOT583 footprint but trades ~50°C/W higher thermal resistance for broader manufacturing compatibility, while LM61480QRNXTQ1 sacrifices EMI optimization and foldback protection to gain input voltage range and current headroom - making TPS62850240QDYCRQ1 the most balanced choice for space- and emission-constrained automotive vision systems.
Availability
TPS62850240QDYCRQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, surround-view ECUs, and hybrid digital clusters requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for TPS62850240QDYCRQ1 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 ICs, with decades of automotive qualification expertise and ISO/TS 16949-certified manufacturing.
The TPS62850x-Q1 product line delivers high-efficiency, low-EMI, AEC-Q100-compliant buck converters specifically engineered for advanced driver assistance systems and infotainment power rails where reliability, thermal performance, and electromagnetic compatibility are mission-critical.
FAQ
What is the maximum continuous output current rating for the TPS62850240QDYCRQ1?
The TPS62850240QDYCRQ1 is rated for 2A continuous output current at junction temperatures ≤125°C. It supports 3A peak current capability at TJ ≤85°C, verified per TI's recommended operating conditions and thermal derating curves in the datasheet. This rating assumes proper PCB thermal design with adequate copper area and vias under the exposed thermal pad.
Does the TPS62850240QDYCRQ1 support external clock synchronization, and what is the valid frequency range?
Yes, the TPS62850240QDYCRQ1 supports external clock synchronization via the MODE/SYNC pin. The valid input frequency range is 1.8MHz to 4MHz, with a required duty cycle of 20%–80%. The device locks to the external clock within 50µs and maintains phase alignment between the falling edge of the MODE/SYNC signal and the rising edge of the SW node.
How does the foldback overcurrent protection function in the TPS62850240QDYCRQ1?
The TPS62850240QDYCRQ1 implements foldback overcurrent protection, reducing the current limit during sustained overload or short-circuit conditions. For this variant, the high-side FET current limit drops from 3.4A nominal to ~1.8A under fault, lowering power dissipation and improving thermal survivability without requiring external circuitry.
What is the purpose of the COMP/FSET pin on the TPS62850240QDYCRQ1, and how is it configured?
The COMP/FSET pin on the TPS62850240QDYCRQ1 serves three functions: setting internal compensation (two modes for 10–200µF output caps), defining switching frequency (1.8–4MHz), and enabling/disabling spread spectrum. Configuration is done with a resistor to GND (e.g., 10kΩ for 2.25MHz, comp setting 1) or by tying directly to VIN/GND for fixed settings.
Is the TPS62850240QDYCRQ1 pin-compatible with other members of the TPS62850x-Q1 family?
Yes, the TPS62850240QDYCRQ1 is pin-to-pin compatible with all TPS62850x-Q1 variants in the same SOT583 package type (DYC or DRL). Electrical differences - such as output current rating (1A/2A/3A), fixed vs adjustable VOUT, and foldback OCP presence - are implemented internally and do not affect pin mapping, layout, or basic peripheral component selection.
TPS62850240QDYCRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-583
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 1.8MHz ~ 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-583
TPS62850240QDYCRQ1 FAQ
1.How can I place an order for TPS62850240QDYCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62850240QDYCRQ1 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 TPS62850240QDYCRQ1 reliable?
The price and inventory of TPS62850240QDYCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62850240QDYCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62850240QDYCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62850240QDYCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62850240QDYCRQ1?
TPS62850240QDYCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62850240QDYCRQ1 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 TPS62850240QDYCRQ1?
For technical support, including TPS62850240QDYCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62850240QDYCRQ1 requirements.
6.How does Aetrix verify that TPS62850240QDYCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62850240QDYCRQ1 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 TPS62850240QDYCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62850240QDYCRQ1?
All TPS62850240QDYCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62850240QDYCRQ1, 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 TPS62850240QDYCRQ1 part is unused and in its original packaging.
Return procedure for TPS62850240QDYCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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