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Texas Instruments TPS629203QDRLRQ1
- Part No.:
- TPS629203QDRLRQ1
- Manufacturer:
- Texas Instruments
- Package:
- SOT-583
- Datasheet:
-
TPS629203QDRLRQ1.pdf
- Description:
- IC REG BUCK ADJ 300MA SOT583
- Quantity:
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Product details
Overview
TPS629203QDRLRQ1 from Texas Instruments is an AEC-Q100 qualified automotive synchronous buck converter delivering up to 300 mA output current with 4-µA typical quiescent current, ±1% output voltage accuracy, and a 3-V to 17-V input range. It serves as a primary power supply for low-power domain rails in ADAS sensors and infotainment subsystems.
For engineers reviewing the TPS629203QDRLRQ1 datasheet, TPS629203QDRLRQ1 pinout, TPS629203QDRLRQ1 application, or TPS629203QDRLRQ1 equivalent, this page delivers verified functional mode options (1-MHz/2.5-MHz, forced PWM/auto PFM), internal/external feedback configuration paths, precise enable threshold behavior, and thermal shutdown response under real junction temperature conditions.
Technical Context
The TPS629203QDRLRQ1 implements TI's DCS-Control topology with internal compensation, enabling seamless transition between PWM and PFM modes without external loop components. Its control architecture integrates direct voltage feedback into a fast comparator stage while maintaining stable DC regulation via a voltage feedback loop.
It supports dual switching frequency selection (1.0 MHz or 2.5 MHz) and dual feedback configurations - external resistor divider (0.6 V to 5.5 V) or internal VSET programming (18 fixed outputs from 0.4 V to 5.5 V). The MODE/S-CONF pin enables static configuration via E96 resistor values or dynamic mode toggling via logic levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports direct connection to 12-V battery, 5-V rail, or multi-cell Li-ion stacks without pre-regulation. |
| Output Current | Up to 0.3 A - sufficient for powering microcontrollers, image sensors, CAN transceivers, and display drivers in automotive domains. |
| Quiescent Current | 4 µA typical - enables >10-year battery standby life in always-on vehicle modules such as door controllers or occupancy sensors. |
| Output Voltage Accuracy | ±1% at TJ = 0°C to 85°C - ensures reliable operation of precision analog front-ends and ADC references without calibration. |
| Switching Frequency | Selectable 1.0 MHz or 2.5 MHz - allows optimization between EMI filtering size (higher fSW) and light-load efficiency (lower fSW). |
| RDS(on) | 250 mΩ (HS), 85 mΩ (LS) - minimizes conduction loss across full load range and supports high-efficiency operation at 0.3-A max load. |
| Protection Features | Overcurrent (HS/LS), overtemperature (170°C shutdown), UVLO (2.95 V rising), and power-good output - provides fault containment without external supervision circuitry. |
Pinout & Package
SOT-5X3 (8-pin, 0.5-mm pitch, 1.60 mm × 2.10 mm body size including pins) - compact automotive-grade package with exposed thermal pad for enhanced junction-to-board heat transfer (RθJB = 25°C/W on JEDEC PCB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB/VSET | Voltage feedback or internal VSET selection | Configurable as feedback input (external divider) or resistor-programmed output voltage selector (18 options); determines regulation reference path. |
| PG | Open-drain power-good indicator | Signals valid output regulation (93–99% of target VOUT); used for rail sequencing with pull-up to any ≤VIN voltage. |
| VOS | Output voltage sense | Direct connection to output capacitor positive terminal enables accurate remote sensing and active discharge control. |
| SW | Switch node | Internal high-side/low-side MOSFET connection point; requires low-inductance layout to minimize EMI and switching losses. |
| GND | Power ground | Primary return path for power and control circuits; must be connected to thermal pad for optimal thermal performance. |
| VIN | Main input supply | Accepts 3–17 V; requires local 4.7-µF ceramic capacitor placed adjacent to pin to suppress high-frequency ripple. |
| EN | Enable with precision threshold | Starts conversion when VIN ≥ 2.95 V and EN ≥ 0.97 V; includes internal pulldown to prevent floating startup. |
| MODE/S-CONF | Mode selection and Smart-CONFIG input | Determines switching frequency, feedback type, discharge enable, and PFM/PWM behavior via resistor value or logic level. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Internally compensated regulation with immediate transient response and stable operation using low-ESR ceramic capacitors only. |
| Auto efficiency enhancement (AEE) | Maintains high efficiency across full load range by dynamically adjusting switching frequency based on VIN/VOUT ratio-no inductor swapping required. |
| 100% duty cycle mode | Enables dropout operation down to VOUT ≈ VIN − 0.3 V (limited by RDS(on) drop), supporting ultra-low-input scenarios like cold-crank conditions. |
| No external bootstrap capacitor | Integrated charge pump eliminates need for external bootstrap components, reducing BOM count and board area in space-constrained modules. |
| AEC-Q100 Grade 2 qualification | Validated for −40°C to +150°C junction temperature operation with HBM Level 2 (±2 kV) and CDM Level C4B (±750 V) ESD robustness. |
Applications
| ADAS Camera Module Power | Automotive Infotainment SoC Core Rail |
|---|---|
|
Use Scenario: Powers 1.2-V core rail of a surround-view camera processor during vehicle ignition and motion detection. IC Role / Device Role / Timing Role: Primary step-down regulator supplying stable 1.2 V at up to 300 mA with <4-µA quiescent current during parking-mode surveillance. Use Value: Enables continuous low-power imaging with <10-µA system sleep current, meeting ISO 16750-2 cold-crank and battery drain requirements. |
Use Scenario: Generates 3.3-V I/O rail for touchscreen controller and audio codec in digital cluster head unit. IC Role / Device Role / Timing Role: Secondary buck converter operating in forced PWM mode at 2.5 MHz to avoid AM-band interference while supporting burst-mode touch response. Use Value: Delivers ±1% output accuracy across −40°C to +125°C ambient, ensuring reliable SPI/I²C communication without signal integrity degradation. |
| Body Control Unit Sensor Interface | LED Driver Bias Supply |
|
Use Scenario: Supplies regulated 5.0-V bias to LIN transceivers and Hall-effect position sensors in door module ECUs. IC Role / Device Role / Timing Role: Fixed-output buck converter configured via VSET resistor (100-kΩ to GND) for factory-trimmed 5.0-V output. Use Value: Eliminates need for post-assembly calibration; maintains <±1.4% regulation over full automotive temperature range per AEC-Q100. |
Use Scenario: Provides adjustable 0.8-V to 5.5-V bias for constant-current LED driver ICs in adaptive front lighting systems. IC Role / Device Role / Timing Role: Programmable buck converter using external FB divider to match forward voltage of multi-string LED arrays. Use Value: Supports seamless dimming control via analog voltage adjustment while maintaining >90% efficiency at 200-mA load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS629206QDRLRQ1 | Higher 600-mA output current; identical pinout, package, and feature set except current rating. | Required where peak load exceeds 300 mA (e.g., radar MMIC bias, multi-core MCU rails). | Select when future-proofing for higher current or consolidating BOM across platforms with varying load profiles. |
| TPS629210QDRLRQ1 | 1-A output capability; same SOT-5X3 footprint and control interface but increased RDS(on) (180 mΩ HS / 60 mΩ LS). | Suitable for high-current ADAS domain controllers needing >500 mA with minimal layout change. | Choose when scaling from sensor nodes to central processing units without redesigning PCB layout. |
Compared with TPS629203QDRLRQ1, the TPS629206QDRLRQ1 and TPS629210QDRLRQ1 offer higher output current while retaining identical pinout, thermal characteristics, and configuration methodology-enabling scalable power design across automotive ECU tiers without requalification effort.
Availability
TPS629203QDRLRQ1 is available at Aetrix Electronics and suitable for advanced driver assistance systems (ADAS), automotive infotainment and cluster, and vehicle body electronics and lighting requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TPS629203QDRLRQ1 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 and embedded processing solutions for automotive, industrial, and personal electronics markets.
The TPS6292xx-Q1 product line delivers highly flexible, AEC-Q100 qualified buck converters optimized for low-IQ, wide input range, and seamless PFM/PWM operation in safety-critical automotive subsystems.
FAQ
What is the maximum output current supported by the TPS629203QDRLRQ1?
The TPS629203QDRLRQ1 supports up to 300 mA of continuous output current. This rating is validated across the full operating junction temperature range of −40°C to +150°C and accounts for thermal derating on standard JEDEC PCBs. Peak current capability is limited by internal high-side FET current limit (1.1 A typical) and thermal shutdown threshold (170°C).
How does the MODE/S-CONF pin configure switching frequency and feedback mode on the TPS629203QDRLRQ1?
The MODE/S-CONF pin configures both switching frequency and feedback mode on the TPS629203QDRLRQ1 either via logic level (HIGH/LOW for dynamic mode toggling) or resistor value (E96 series, 7.5 kΩ to 249 kΩ) for static configuration. Resistor selection determines 1-MHz vs. 2.5-MHz operation, auto PFM/PWM vs. forced PWM, internal VSET vs. external FB, and output discharge enable-all interpreted once during startup before soft-start begins.
Can the TPS629203QDRLRQ1 operate with input voltage below 3 V?
No, the TPS629203QDRLRQ1 cannot operate with input voltage below 3 V. Its absolute minimum input voltage is 3.0 V per recommended operating conditions, and undervoltage lockout (UVLO) disables the device if VIN falls below 2.85 V (rising threshold). Operation below 3 V risks failure to regulate or enter undefined states, especially during cold-crank transients where battery voltage may dip to 2.8 V.
What is the purpose of the VOS pin on the TPS629203QDRLRQ1, and how must it be connected?
The VOS pin on the TPS629203QDRLRQ1 provides dedicated output voltage sensing for improved regulation accuracy and enables active output discharge. It must be connected directly to the positive terminal of the output capacitor, not to the load side of any output filter inductor or ferrite bead. This Kelvin-sense connection ensures the feedback loop monitors true output voltage, minimizing IR drop errors and enabling precise discharge control during shutdown.
Does the TPS629203QDRLRQ1 support 100% duty cycle operation, and under what conditions?
Yes, the TPS629203QDRLRQ1 supports 100% duty cycle operation to maintain regulation when input voltage approaches output voltage. This mode activates automatically when required by load and input conditions, allowing dropout operation down to VOUT ≈ VIN − (IOUT × RDS(on)). It remains active only in forced PWM mode and is disabled in auto PFM mode to preserve light-load efficiency.
TPS629203QDRLRQ1 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):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.4V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 300mA
- Frequency - Switching:
- 1MHz, 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-583
TPS629203QDRLRQ1 FAQ
1.How can I place an order for TPS629203QDRLRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS629203QDRLRQ1 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 TPS629203QDRLRQ1 reliable?
The price and inventory of TPS629203QDRLRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS629203QDRLRQ1 is usually 5 days.
3.What payment methods are accepted for TPS629203QDRLRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS629203QDRLRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS629203QDRLRQ1?
TPS629203QDRLRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS629203QDRLRQ1 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 TPS629203QDRLRQ1?
For technical support, including TPS629203QDRLRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS629203QDRLRQ1 requirements.
6.How does Aetrix verify that TPS629203QDRLRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS629203QDRLRQ1 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 TPS629203QDRLRQ1 meets industry standards.
7.What is the process for return or replacement of TPS629203QDRLRQ1?
All TPS629203QDRLRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS629203QDRLRQ1, 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 TPS629203QDRLRQ1 part is unused and in its original packaging.
Return procedure for TPS629203QDRLRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS629203QDRLRQ1 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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