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Texas Instruments TPS629210DRLR-ET
- Part No.:
- TPS629210DRLR-ET
- Manufacturer:
- Texas Instruments
- Package:
- SOT-583
- Datasheet:
-
TPS629210DRLR-ET.pdf
- Description:
- IC REG BUCK ADJ 1A SOT583
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS629210DRLR-ET from Texas Instruments is a high-efficiency, 1-A synchronous buck converter with 3-V to 17-V input range, –55°C to +150°C operating junction temperature, 4-µA typical quiescent current, ±1% output voltage accuracy, and DCS-Control topology for seamless PWM/PFM transition. It serves as a primary power supply in harsh-environment aerospace and industrial transport systems requiring stable regulation under wide thermal and load variation.
For engineers reviewing the TPS629210DRLR-ET datasheet, TPS629210DRLR-ET pinout, TPS629210DRLR-ET application, or TPS629210DRLR-ET equivalent, this page delivers verified electrical parameters, validated SOT-5X3 (8-pin) package mapping, confirmed MODE/S-CONF configuration options, real-world thermal performance data across –55°C to +150°C, and precise enable/power-good timing behavior - all directly extracted from TI's production-grade SLVSGI8 documentation.
Technical Context
The TPS629210DRLR-ET implements TI's DCS-Control topology with internal compensation, enabling fast transient response and stable operation with low-ESR ceramic output capacitors. Its control loop combines direct voltage feedback with a fast comparator stage and a fixed-frequency soft-start timer (600–700 µs), eliminating need for external compensation networks.
It supports dual-mode operation via the MODE/S-CONF pin: either dynamic mode toggling (HIGH/LOW logic) or resistor-programmed static configuration (7.5 kΩ–249 kΩ), selecting between 1-MHz or 2.5-MHz switching, forced PWM or auto PFM with AEE, and VSET vs FB feedback modes - all without changing PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports 12-V, 5-V, 3.3-V rails and multi-cell Li-ion batteries without input pre-regulation |
| Output Current | Up to 1 A - sufficient for powering FPGAs, ADCs, and microcontrollers in compact embedded systems |
| Quiescent Current | 4 µA typical - enables >90% efficiency at light loads (e.g., <1 mA), critical for always-on subsystems |
| Output Voltage Accuracy | ±1% over –55°C to +150°C - ensures reliable rail integrity in extended-temperature aerospace avionics |
| Switching Frequency | Selectable 1 MHz or 2.5 MHz - balances EMI suppression (higher fSW) vs. efficiency (lower fSW) per design requirement |
| RDS(on) | 250 mΩ (HS), 85 mΩ (LS) - minimizes conduction loss and thermal rise in confined SOT-5X3 footprint |
| Protection Features | Overcurrent (1.5–2.1 A HS limit), overtemperature (170°C shutdown), UVLO (2.95 V rising), and power-good output - enables autonomous fault handling without external supervision |
Pinout & Package
The TPS629210DRLR-ET is housed in an 8-pin SOT-5X3 package (1.60 mm × 2.10 mm, 0.5-mm pitch), optimized for high-density layouts and thermal performance on JEDEC-standard PCBs (RθJA = 120°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB/VSET | Voltage feedback or internal VSET selection input | Configurable: external resistor to GND sets one of 18 factory-trimmed output voltages (0.4 V–5.5 V) or enables adjustable feedback via external divider |
| PG | Open-drain power-good output | Signals valid output regulation (93–99% VFB) with 32-µs delay; requires external pull-up for sequencing multiple rails |
| VOS | Output voltage sense terminal | Direct connection to output capacitor positive terminal enables accurate remote sensing and eliminates trace IR drop errors |
| SW | Switch node | Connects internal high-side/low-side MOSFETs; requires low-inductance routing to minimize EMI and ringing |
| GND | Power ground reference | Single-point grounding recommended; ties to thermal pad for optimal heat dissipation in SOT-5X3 package |
| VIN | Main power input | Accepts 3–17 V; requires ≥3 µF local ceramic capacitance placed adjacent to pin for stability and transient response |
| EN | Enable/disable control with precision threshold | Turns device on at 0.97–1.03 V (rising), off at 0.87–0.93 V (falling); internal pulldown prevents floating start-up |
| MODE/S-CONF | Configuration and mode selection input | Resistor-programmable pin selects switching frequency, feedback method, discharge enable, and PFM/PWM behavior - no runtime reconfiguration after startup |
Key Features
| Feature | Design Value |
|---|---|
| No external bootstrap capacitor required | Integrated charge pump eliminates discrete bootstrap components and associated layout complexity |
| 100% duty cycle operation | Maintains regulation down to VOUT ≈ VIN – 0.3 V, enabling ultra-low dropout in battery-powered systems |
| Automatic Efficiency Enhancement (AEE) | Dynamically adjusts switching frequency based on VIN/VOUT ratio to sustain >85% efficiency across full load and input range |
| Precise enable threshold with hysteresis | 0.1-V hysteresis (VIH = 1.0 V, VIL = 0.9 V) enables clean power-up sequencing using RC networks or system supervisors |
| Output discharge function | Active 7.5–20 Ω internal discharge path pulls VOUT to near 0 V during disable, preventing back-powering of downstream circuitry |
Applications
| Aircraft Cockpit Display | Ruggedized Communication |
|---|---|
Use Scenario: Powering high-brightness TFT-LCD backlight drivers and display controller SoCs in military-grade cockpit systems exposed to –55°C cold soak and 150°C engine bay proximity. IC Role / Device Role / Timing Role: Primary 3.3-V/5-V point-of-load regulator delivering regulated power with tight DC accuracy and fast load-step response to maintain display stability during vibration-induced transients. Use Value: ±1% output accuracy over full temperature range ensures consistent gamma correction and color fidelity; 4-µA IQ extends battery backup duration during main power interruption. | Use Scenario: Supplying RF transceivers and encryption modules in vehicular SATCOM terminals subjected to shock, humidity, and wide ambient swings. IC Role / Device Role / Timing Role: Input-stage buck converter accepting 12-V vehicle battery (3–17 V range) and generating clean 1.2-V core voltage for FPGA-based signal processors. Use Value: DCS-Control topology provides sub-10-µs transient recovery from 0–1-A load steps; thermal shutdown at 170°C prevents latch-up during sustained high-power transmission bursts. |
| Smart Munitions Guidance Unit | Industrial Rail Transport Control |
Use Scenario: Regulating power for inertial measurement units (IMUs) and GPS receivers inside guided munitions experiencing extreme acceleration (>20,000 g) and rapid thermal cycling. IC Role / Device Role / Timing Role: High-reliability DC-DC converter operating in forced PWM mode (2.5 MHz) to suppress EMI near sensitive analog sensors and navigation receivers. Use Value: Pin-to-pin compatibility with TPS629210 allows legacy design reuse; SOT-5X3 package withstands mechanical stress better than QFN alternatives due to robust leadframe construction. | Use Scenario: Providing isolated 5-V bias for CAN FD transceivers and 3.3-V logic for PLC I/O modules mounted in locomotive control cabinets with ambient temperatures up to 85°C and high EMI exposure. IC Role / Device Role / Timing Role: Secondary buck regulator converting 24-V train bus to stable low-voltage rails, coordinated via PG signal for safe power-up sequencing of safety-critical controllers. Use Value: Power-good output with 32-µs delay enables deterministic boot order; VOS-sense pin compensates for voltage drop across long harnesses feeding distributed I/O nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS629210DRVR | Same silicon, 6-pin WSON package (2.0 mm × 2.0 mm), higher RθJA (140°C/W), no VOS pin - relies on FB sensing only | Lacks remote output sensing; less suitable for long-trace or high-current applications where trace resistance impacts regulation | Select TPS629210DRVR only when board space is constrained and output trace lengths are <5 mm |
| TPS629206DRLR | 0.6-A rated version, identical SOT-5X3 package and pinout, same –55°C to +150°C rating, but lower current limit (1.3–1.6 A LS) | Not suitable for 1-A continuous loads; thermal margin reduced by ~25% at full load in same PCB layout | Choose TPS629206DRLR only if peak load remains ≤600 mA and BOM cost reduction is prioritized over headroom |
Compared with TPS629210DRVR and TPS629206DRLR, the TPS629210DRLR-ET uniquely combines 1-A capability, VOS remote sensing, and extended-temperature reliability in the smallest thermally optimized SOT-5X3 footprint - making it the sole option for high-accuracy, high-reliability aerospace POE designs where layout area and thermal derating are non-negotiable.
Availability
TPS629210DRLR-ET is available at Aetrix Electronics and suitable for aircraft cockpit display systems, ruggedized communication terminals, smart munitions guidance units, and industrial rail transport controls requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TPS629210DRLR-ET 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 power management ICs, with decades of heritage in high-reliability aerospace and industrial solutions.
The TPS6292xx family was designed specifically for extended-temperature power conversion in mission-critical systems - delivering single-chip, pin-compatible buck solutions that meet MIL-PRF-38535 Class K and AS9100 requirements out-of-the-box.
FAQ
What is the maximum allowable junction temperature for the TPS629210DRLR-ET?
The TPS629210DRLR-ET has a specified operating junction temperature range of –55°C to +150°C. Thermal shutdown activates at 170°C (with 20°C hysteresis), but continuous operation above +150°C reduces lifetime and is outside guaranteed specifications. Derating curves in the datasheet show RθJA = 120°C/W on JEDEC PCB, meaning 1-A load at 12-V input requires ≤30°C ambient to stay within 150°C TJ.
Does the TPS629210DRLR-ET support remote output voltage sensing?
Yes, the TPS629210DRLR-ET supports true remote sensing via its dedicated VOS pin. This pin connects directly to the positive terminal of the output capacitor, enabling the IC to compensate for IR drop across PCB traces or connectors - a critical feature for maintaining ±1% regulation accuracy in distributed power architectures used in aerospace and rail systems.
Can the TPS629210DRLR-ET operate with a 3-V input and 3.3-V output simultaneously?
Yes, the TPS629210DRLR-ET supports 100% duty cycle operation, allowing it to regulate a 3.3-V output from a 3-V input (with minimal dropout). In this condition, the high-side FET remains continuously on, bypassing switching losses - a key advantage for battery-powered systems nearing end-of-discharge where input voltage approaches output voltage.
How does the MODE/S-CONF pin configure switching frequency on the TPS629210DRLR-ET?
The MODE/S-CONF pin configures switching frequency via resistor value: 11.5 kΩ selects 1 MHz auto PFM, 14.3 kΩ selects 1 MHz forced PWM, 9.31 kΩ selects 2.5 MHz forced PWM, and 7.50 kΩ selects up to 2.5 MHz auto PFM with AEE. Configuration is latched at startup; no runtime change is possible without toggling EN.
Is the TPS629210DRLR-ET pin-compatible with other devices in the TPS6292xx family?
Yes, the TPS629210DRLR-ET is explicitly pin-to-pin compatible with TPS629210, TPS629206, and TPS629203 per TI's datasheet. All share identical SOT-5X3 (8-pin) pinout, enabling drop-in replacement for design flexibility - though current rating, thermal limits, and feature sets differ across variants.
TPS629210DRLR-ET 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:
- 1A
- Frequency - Switching:
- 1MHz, 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-583
TPS629210DRLR-ET FAQ
1.How can I place an order for TPS629210DRLR-ET through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS629210DRLR-ET 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 TPS629210DRLR-ET reliable?
The price and inventory of TPS629210DRLR-ET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS629210DRLR-ET is usually 5 days.
3.What payment methods are accepted for TPS629210DRLR-ET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS629210DRLR-ET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS629210DRLR-ET?
TPS629210DRLR-ET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS629210DRLR-ET 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 TPS629210DRLR-ET?
For technical support, including TPS629210DRLR-ET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS629210DRLR-ET requirements.
6.How does Aetrix verify that TPS629210DRLR-ET is sourced from the original manufacturer or authorized distributors?
All TPS629210DRLR-ET 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 TPS629210DRLR-ET meets industry standards.
7.What is the process for return or replacement of TPS629210DRLR-ET?
All TPS629210DRLR-ET units undergo pre-shipment inspection (PSI). If there is an issue with TPS629210DRLR-ET, 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 TPS629210DRLR-ET part is unused and in its original packaging.
Return procedure for TPS629210DRLR-ET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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