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Texas Instruments TPS62231TDRYRQ1
- Part No.:
- TPS62231TDRYRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS62231TDRYRQ1.pdf
- Description:
- IC REG BUCK 1.8V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:14,828
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Product details
Overview
TPS62231TDRYRQ1 from Texas Instruments is an automotive-grade, synchronous step-down DC-DC converter in a 1 × 1.5 mm SON-6 package, delivering fixed 1.8 V output at up to 500 mA with 3 MHz switching frequency, 94% peak efficiency, and 22 µA quiescent current in Power Save Mode-designed for space-constrained ADAS camera modules.
For engineers reviewing the TPS62231TDRYRQ1 datasheet, TPS62231TDRYRQ1 pinout, TPS62231TDRYRQ1 application, or TPS62231TDRYRQ1 equivalent, key selection criteria include its AEC-Q100 qualification, 2.05–6 V input range, forced-PWM/Power-Save mode control via MODE pin, 100% duty-cycle low-dropout operation, and minimal 12 mm² solution size with 1 µH inductor and 4.7 µF output capacitor.
Technical Context
The TPS62231TDRYRQ1 implements a high-frequency hysteretic PWM controller topology enabling stable 3 MHz operation without external compensation, supporting both automatic PFM-to-PWM transition and user-selectable forced-PWM mode via the MODE pin. Its integrated high-side (850 mΩ max) and low-side (480 mΩ max) MOSFETs enable synchronous rectification and 100% duty-cycle operation near dropout.
Control logic includes undervoltage lockout (1.9 V rising threshold), thermal shutdown (150 °C), soft-start (100 µs typical), and dual-current-limit protection (850 mA high-side, 840 mA low-side). The FB pin connects directly to the output capacitor for precise 0.7 V internal reference regulation, with ±2.5% output voltage accuracy across –40 °C to 105 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2.5% over temperature - eliminates need for external feedback resistors and ensures stable rail for digital image sensors. |
| Input Voltage Range | 2.05 V to 6 V - supports Li-ion battery discharge curves and pre-regulated automotive rails without external LDO staging. |
| Switching Frequency | 3 MHz nominal - enables use of tiny 1 µH inductors and reduces EMI filtering burden in high-density PCB layouts. |
| Max Output Current | 500 mA continuous - sufficient for dual-lane MIPI CSI-2 camera SoCs with integrated ISP and DDR PHY. |
| Quiescent Current | 22 µA in Power Save Mode - extends battery runtime in always-on ADAS vision systems during standby. |
| Package | 1 mm × 1.5 mm × 0.6 mm SON-6 - achieves <12 mm² total solution area, critical for front/rear camera module height constraints. |
| PSRR | Up to 90 dB - suppresses noise from noisy power domains (e.g., motor drivers), preserving analog sensor signal integrity. |
Pinout & Package
TPS62231TDRYRQ1 uses a 6-pin DRY (SON) package measuring 1.0 mm × 1.5 mm × 0.6 mm with wettable flanks, optimized for automated optical inspection and thermal performance on 2-layer automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - MODE | Digital control input | High = forced PWM mode (fixed-frequency, low-noise); Low = automatic PFM/PWM transition (high light-load efficiency). |
| 2 - SW | Switch node | Connects to inductor; carries high di/dt switching current - requires short, low-inductance trace to minimize EMI and voltage spikes. |
| 3 - VIN | Power input | Accepts 2.05–6 V; must be decoupled with ≥2.2 µF X5R/X7R ceramic capacitor placed within 2 mm of pin. |
| 4 - GND | Power ground | Thermal and electrical reference; tied directly to exposed thermal pad under package - mandatory for thermal derating and noise immunity. |
| 5 - EN | Enable control | Active-high; <0.6 V = shutdown (<1 µA IQ); >0.8 V = operational - supports power sequencing with upstream regulators. |
| 6 - FB | Feedback input | Monitors output via internal 0.7 V reference; connected directly to output capacitor - no external resistor divider required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for –40 °C to +125 °C junction temperature - validated for under-hood and cabin-mounted ADAS ECUs. |
| 100% duty-cycle operation | Maintains regulation down to VIN ≈ VOUT - maximizes usable battery capacity in 12 V systems with buck-boost pre-regulators. |
| Soft-start time | 100 µs typical - limits inrush current into pre-biased output capacitors during hot-plug or reset events. |
| Thermal shutdown with hysteresis | Triggers at 150 °C, resets at 130 °C - prevents latch-up during transient overload while allowing recovery without system reset. |
| High PSRR (90 dB) | Attenuates ripple from adjacent switching rails (e.g., infotainment DC-DC) - preserves SNR in CMOS image sensor analog front-ends. |
Applications
| Front Camera Power Supply | Rear View Camera Module |
|---|---|
Use Scenario: Powers 5 MP CMOS image sensor and ISP in compact front-facing ADAS camera housing with strict height limit (<1.2 mm). IC Role / Device Role / Timing Role: Primary 1.8 V core rail regulator; provides clean, low-noise supply synchronized to MIPI clock domain. Use Value: 12 mm² solution size fits within 8 × 12 mm camera PCB; 94% efficiency minimizes thermal rise in sealed enclosure. | Use Scenario: Supplies 1.8 V to rear-view camera SoC in trunk-mounted module exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Fixed-output buck converter with AEC-Q100 qualification ensuring reliability over 15-year vehicle lifetime. Use Value: –40 °C to +105 °C operating range and 1 µA shutdown current meet ISO 16750-4 cold-cranking requirements. |
| Blind-Spot Monitoring Radar SoC | Automotive Telematics eCall Module |
Use Scenario: Powers 77 GHz radar transceiver ASIC requiring ultra-low output ripple to avoid phase noise degradation. IC Role / Device Role / Timing Role: Low-PSRR, high-transient-response regulator feeding RF synthesizer and ADC reference rails. Use Value: 90 dB PSRR and <10 mVpp ripple at 500 mA load suppress coupling from digital baseband section. | Use Scenario: Delivers 1.8 V to cellular modem and GNSS receiver in emergency call (eCall) unit with battery backup. IC Role / Device Role / Timing Role: Always-on power management IC with 22 µA quiescent current enabling >10-year battery shelf life. Use Value: Power Save Mode maintains efficiency at microamp loads while forced PWM mode ensures clean supply during GPS acquisition bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS622314TDRYRQ1 | Fixed 1.5 V output; identical package, pinout, and specs otherwise - shares same die with different internal feedback divider. | Used where 1.5 V logic rails (e.g., LPDDR2 I/O) replace 1.8 V requirements - not interchangeable without board revision. | Select when system-level voltage rail architecture mandates 1.5 V instead of 1.8 V; no layout change needed. |
| LMQ66430QRNXTQ1 | 36 V input, 3 A output, 2.1 MHz sync buck; larger 3 × 3 mm QFN-16 package - higher voltage/current capability but 3× footprint. | Suitable for main 5 V/3.3 V distribution in telematics gateway - not a drop-in replacement due to pin count, size, and control interface differences. | Choose only for new designs needing wider VIN range or higher current; requires full schematic and layout redesign. |
Compared with TPS62231TDRYRQ1, TPS622314TDRYRQ1 offers identical form-factor and thermal performance at 1.5 V, while LMQ66430QRNXTQ1 trades miniaturization for robustness in high-voltage automotive subsystems - neither is pin-compatible, but the former enables rapid voltage variant reuse.
Availability
TPS62231TDRYRQ1 is available at Aetrix Electronics and suitable for advanced driver-assistance systems (ADAS), automotive telematics, and space-optimized industrial power systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TPS62231TDRYRQ1 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 headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with broad automotive, industrial, and personal electronics portfolios.
The TPS6223x-Q1 product line delivers ultra-small, high-frequency synchronous buck converters specifically engineered for AEC-Q100-compliant ADAS camera modules and other space-constrained automotive electronics demanding high efficiency and low EMI.
FAQ
What is the maximum output current capability of the TPS62231TDRYRQ1?
The TPS62231TDRYRQ1 supports up to 500 mA continuous output current under recommended operating conditions (TA ≤ 105 °C, proper PCB thermal design). This rating assumes use of a 1 µH or 2.2 µH inductor and 4.7 µF output capacitor, with peak switch current limited to 850 mA internally. Derating applies above 85 °C ambient or with inadequate copper pour.
Does the TPS62231TDRYRQ1 require external feedback resistors to set the output voltage?
No, the TPS62231TDRYRQ1 has a factory-trimmed internal feedback network that sets the output to a fixed 1.8 V. The FB pin connects directly to the output capacitor and requires no external resistors - simplifying layout and eliminating resistor tolerance errors that affect regulation accuracy in adjustable buck converters.
How does the MODE pin affect the operation of the TPS62231TDRYRQ1?
The MODE pin selects between two operating modes: when pulled low (≤0.6 V), the TPS62231TDRYRQ1 automatically transitions between PWM and PFM to maximize light-load efficiency; when pulled high (≥2.05 V), it forces continuous PWM operation for predictable switching frequency and lower output ripple - essential for noise-sensitive RF or audio circuits.
What thermal considerations apply to the TPS62231TDRYRQ1 in automotive applications?
The TPS62231TDRYRQ1 has a junction-to-ambient thermal resistance (RθJA) of 294.5 °C/W in the DRY package. To maintain TJ ≤ 125 °C at 500 mA, the PCB must provide ≥100 mm² of 2-oz copper connected to the exposed thermal pad. Automotive designs should verify thermal performance across –40 °C to +105 °C ambient using TI's thermal simulation models.
Is the TPS62231TDRYRQ1 compatible with 1.0 mm pitch PCB assembly processes?
Yes, the TPS62231TDRYRQ1 in the DRY (SON-6) package features 0.5 mm pin pitch and wettable flanks, fully compatible with standard 1.0 mm stencil apertures and SPI-based solder paste inspection. TI provides detailed assembly guidelines in SLVSB63A, confirming suitability for automotive-grade reflow profiles including peak temperatures up to 260 °C.
TPS62231TDRYRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-UFDFN
- 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):
- 2.05V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SON (1.45x1)
TPS62231TDRYRQ1 FAQ
1.How can I place an order for TPS62231TDRYRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62231TDRYRQ1 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 TPS62231TDRYRQ1 reliable?
The price and inventory of TPS62231TDRYRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62231TDRYRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62231TDRYRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62231TDRYRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62231TDRYRQ1?
TPS62231TDRYRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62231TDRYRQ1 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 TPS62231TDRYRQ1?
For technical support, including TPS62231TDRYRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62231TDRYRQ1 requirements.
6.How does Aetrix verify that TPS62231TDRYRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62231TDRYRQ1 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 TPS62231TDRYRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62231TDRYRQ1?
All TPS62231TDRYRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62231TDRYRQ1, 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 TPS62231TDRYRQ1 part is unused and in its original packaging.
Return procedure for TPS62231TDRYRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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