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Texas Instruments TPS62850140QDYCRQ1
- Part No.:
- TPS62850140QDYCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- SOT-583
- Datasheet:
-
TPS62850140QDYCRQ1.pdf
- Description:
- IC REG BUCK ADJ 1A SOT583
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
TPS62850140QDYCRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering 1A continuous output current in an SOT583 package. It operates from 2.7V to 6V input, provides adjustable 0.6V–5.5V output with ±1% PWM accuracy, features 17µA quiescent current, and supports 1.8MHz–4MHz switching frequency - optimized for ADAS camera power rails requiring low EMI and precise sequencing.
For engineers reviewing the TPS62850140QDYCRQ1 datasheet, TPS62850140QDYCRQ1 pinout, TPS62850140QDYCRQ1 application, or TPS62850140QDYCRQ1 equivalent, key selection criteria include its foldback overcurrent protection, active output discharge, power-good window comparator, and compatibility with 2×10μF ceramic output capacitors in space-constrained automotive ECUs.
Technical Context
The TPS62850140QDYCRQ1 implements peak current mode control with internal compensation selectable via COMP/FSET pin configuration, enabling stable operation across 8–200μF output capacitance ranges depending on VOUT and compensation setting. Its dual-mode operation (PWM/PFM) maintains high efficiency from light-load to full-load conditions, while the MODE/SYNC pin supports external clock synchronization or forced PWM mode.
It integrates precision enable logic with user-defined UVLO via resistor divider, 100% duty cycle capability for low-dropout operation, and thermal shutdown at 170°C with 15°C hysteresis. The device's RDS(on) values - 65mΩ (high-side) and 33mΩ (low-side) at VIN ≥ 5V - ensure minimal conduction loss at 1A continuous load in automotive ambient temperatures up to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports direct connection to automotive battery (cold-crank tolerant down to 2.7V) |
| Output Current | 1A continuous - rated for sustained operation at TJ ≤ 125°C per AEC-Q100 Grade 1 |
| Quiescent Current | 17µA typical - enables always-on subsystems without excessive battery drain |
| Output Voltage Accuracy | ±1% in PWM mode - ensures tight regulation for sensitive ADAS sensor analog supplies |
| Switching Frequency | 1.8MHz to 4MHz - configurable via resistor or external sync; avoids AM band interference |
| Power-Good Output | Open-drain window comparator - signals valid regulation with 5% UVP/OVP hysteresis |
| Foldback OCP | Enabled - reduces fault current during short-circuit, limiting thermal stress on PCB traces |
| Active Output Discharge | Enabled - discharges VOUT through 100Ω internal path for safe power-down sequencing |
Pinout & Package
TPS62850140QDYCRQ1 uses the 8-pin SOT583 (DYC) package, measuring 2.10mm × 1.60mm including pins, with exposed thermal pad for enhanced heat dissipation in compact automotive layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Accepts 2.7V–6V; requires local 10μF ceramic capacitor to GND for stability |
| SW | Switch node | Connects to external 0.47μH inductor; high dv/dt node requiring minimized trace area |
| GND | Power ground | Primary return path; must be connected to thermal pad for thermal performance |
| EN | Enable control | Logic-compatible input with 1.1V rising threshold; supports RC-based power-up delay |
| PG | Power-good indicator | Open-drain output; requires external pullup to monitor regulated output status |
| FB | Feedback input | 0.6V reference; connects to resistor divider for adjustable output voltage setting |
| COMP/FSET | Compensation & frequency set | Configures loop compensation and switching frequency via resistor to GND (4.5kΩ–100kΩ) |
| MODE/SYNC | Operation mode control | Pull low for PFM/PWM auto-switching; pull high for forced PWM; accepts 1.8–4MHz sync clock |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive infotainment and ADAS reliability requirements |
| Active output discharge | 100Ω internal discharge path - eliminates need for external bleed circuit in safety-critical power-down sequences |
| Foldback overcurrent protection | Reduces peak fault current during output short - preserves MOSFET SOA and prevents thermal runaway |
| Pseudo-random spread spectrum | Reduces peak EMI by up to 10dB - simplifies compliance with CISPR 25 Class 5 radiated emissions limits |
| 100% duty cycle mode | Enables dropout < 100mV at 1A - supports low-VOUT rails (e.g., 0.8V core supplies) from marginal input voltages |
| Internal soft-start | 1ms fixed ramp time - prevents inrush current and stabilizes upstream supply during power-up |
Applications
| ADAS Camera Power Supply | Surround View ECU Core Rail |
|---|---|
Use Scenario: Powers image sensor and ISP in front-facing ADAS camera module under stop-start and cold-crank conditions. IC Role / Device Role / Timing Role: Primary 1.2V/1.8V/3.3V point-of-load regulator with fast transient response and low noise. Use Value: 17µA IQ extends battery life in parked-camera recording; ±1% accuracy ensures consistent sensor gain calibration. |
Use Scenario: Supplies 1.1V core voltage to SoC in surround-view electronic control unit with multi-camera inputs. IC Role / Device Role / Timing Role: High-efficiency buck converter synchronized to system clock to minimize beat-frequency noise. Use Value: 1.8–4MHz programmable frequency avoids interference with video clock harmonics; foldback OCP protects against camera cable shorts. |
| Hybrid Cluster Display Logic | Telematics Control Unit I/O Rail |
Use Scenario: Generates 3.3V I/O rail for microcontroller and CAN transceivers in reconfigurable digital instrument cluster. IC Role / Device Role / Timing Role: Sequenced power rail enabled after main 5V supply stabilizes via EN pin resistor divider. Use Value: Precise ENABLE threshold allows exact power-up timing; PG output confirms regulation before firmware initialization. |
Use Scenario: Provides 1.8V supply to cellular modem baseband processor in telematics gateway under varying battery voltage. IC Role / Device Role / Timing Role: Automotive-grade buck converter with thermal shutdown and wide VIN range for robust field operation. Use Value: 170°C thermal shutdown with 15°C hysteresis prevents permanent damage during prolonged high-temperature operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6285010MQDYCRQ1 | Fixed 1.8V output; foldback OCP disabled | Pre-configured for standard logic rails; no external feedback resistors required | Select when 1.8V output and simplified BOM outweigh need for foldback protection |
| TPS628501B0QDRLRQ1 | SOT583 DRL package; 150µs soft-start (vs 1ms); adjustable VOUT | Same electrical specs but faster startup - suitable for systems requiring rapid wake-up from sleep | Choose for lower-profile DRL variant and reduced soft-start time where layout space permits |
Compared with TPS62850140QDYCRQ1, the TPS6285010MQDYCRQ1 offers plug-and-play 1.8V regulation but lacks foldback OCP, while the TPS628501B0QDRLRQ1 provides identical functionality in a different SOT583 variant with accelerated soft-start - both require evaluation of thermal performance and PCB layout constraints.
Availability
TPS62850140QDYCRQ1 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 reliability and long-term lifecycle support.
Supply support for TPS62850140QDYCRQ1 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 and embedded processing technologies, with decades of automotive qualification expertise and functional safety documentation support.
The TPS62850x-Q1 product line delivers high-efficiency, low-EMI step-down conversion for infotainment and ADAS systems, designed specifically to meet AEC-Q100 Grade 1 requirements and simplify automotive power architecture design.
FAQ
What is the maximum continuous output current rating for the TPS62850140QDYCRQ1?
The TPS62850140QDYCRQ1 is rated for 1A continuous output current under AEC-Q100 Grade 1 conditions (TA = –40°C to +125°C). This rating assumes proper PCB thermal design with the exposed thermal pad soldered to a sufficient copper area, and operation within the recommended input voltage (2.7V–6V) and output voltage (0.6V–5.5V) ranges. Peak current capability reaches 3A for short durations.
Does the TPS62850140QDYCRQ1 support external clock synchronization?
Yes, the TPS62850140QDYCRQ1 supports external clock synchronization via the MODE/SYNC pin. It accepts a 1.8MHz–4MHz square-wave clock signal with 20%–80% duty cycle. When synchronized, the internal PLL locks to the external clock on falling edges, enabling phase-controlled multi-rail systems and EMI reduction through frequency alignment - a key feature for automotive domain controllers.
How does the foldback overcurrent protection work in the TPS62850140QDYCRQ1?
The TPS62850140QDYCRQ1 implements foldback overcurrent protection that reduces output current during overload or short-circuit events. When triggered, the high-side FET current limit drops below nominal (e.g., from 2.6A typical to ~1.5A), lowering power dissipation and preventing thermal runaway. This behavior is confirmed in the device comparison table and electrical characteristics section of the datasheet, distinguishing it from hiccup or constant-current limiting.
What output capacitor configuration is required for the TPS62850140QDYCRQ1?
The TPS62850140QDYCRQ1 requires a minimum of two 10μF ceramic capacitors (2×10μF) at the output, as specified in the Device Comparison Table. The exact minimum value depends on output voltage and compensation setting: 8μF for VOUT ≥ 3.3V with comp setting 1, or 15μF for VOUT < 1V with comp setting 2. TI recommends X5R/X7R dielectrics in 0603 or larger case sizes placed close to the IC for optimal ESR and ESL performance.
Is the TPS62850140QDYCRQ1 pin-compatible with other devices in the TPS62850x-Q1 family?
Yes, the TPS62850140QDYCRQ1 shares identical pinout and package (8-pin SOT583 DYC) with all other DYC-variant members of the TPS62850x-Q1 family, including TPS6285010MQDYCRQ1 and TPS62850240QDYCRQ1. This enables drop-in replacement across 1A/2A variants and fixed/adjustable output versions - provided board layout accommodates identical thermal pad soldering and external component values match functional requirements.
TPS62850140QDYCRQ1 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):
- 1.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1A
- 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
TPS62850140QDYCRQ1 FAQ
1.How can I place an order for TPS62850140QDYCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62850140QDYCRQ1 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 TPS62850140QDYCRQ1 reliable?
The price and inventory of TPS62850140QDYCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62850140QDYCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62850140QDYCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62850140QDYCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62850140QDYCRQ1?
TPS62850140QDYCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62850140QDYCRQ1 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 TPS62850140QDYCRQ1?
For technical support, including TPS62850140QDYCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62850140QDYCRQ1 requirements.
6.How does Aetrix verify that TPS62850140QDYCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62850140QDYCRQ1 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 TPS62850140QDYCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62850140QDYCRQ1?
All TPS62850140QDYCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62850140QDYCRQ1, 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 TPS62850140QDYCRQ1 part is unused and in its original packaging.
Return procedure for TPS62850140QDYCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62850140QDYCRQ1 Tags
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