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Texas Instruments TPS62133AQRGTTQ1
- Part No.:
- TPS62133AQRGTTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
TPS62133AQRGTTQ1.pdf
- Description:
- IC REG BUCK 5V 3A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:300
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Product details
Overview
TPS62133AQRGTTQ1 from Texas Instruments is an automotive-grade, 3-V to 17-V input, 5-V fixed-output synchronous step-down DC-DC converter delivering up to 3-A continuous current with DCS-Control™ topology, 1.25 MHz / 2.5 MHz selectable switching frequency, and integrated power-good output - used in ADAS camera power rails requiring tight regulation and fast transient response.
For engineers reviewing the TPS62133AQRGTTQ1 datasheet, TPS62133AQRGTTQ1 pinout, TPS62133AQRGTTQ1 application, or TPS62133AQRGTTQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to 125°C), 17 µA quiescent current in power-save mode, 5-V fixed output with ±1.8% accuracy in PWM mode, and seamless transition between PWM and power-save operation without output voltage disturbance.
Technical Context
The TPS62133AQRGTTQ1 implements DCS-Control™ - a hybrid regulation architecture combining voltage-mode feedback with direct output-voltage sensing for fast transient response and stable light-load behavior. It uses internal compensation and supports both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) operation depending on load.
Its control logic integrates undervoltage lockout (2.7 V nominal), thermal shutdown (160°C), short-circuit protection with dynamic current limiting, and 100% duty-cycle operation for low-dropout conversion - all while maintaining regulated 5-V output across input voltages from 3 V to 17 V and junction temperatures from –40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports wide automotive battery and intermediate bus rails including cold-crank (≥3 V) and load-dump (≤17 V) conditions. |
| Output Voltage | Fixed 5 V ±1.8% (PWM mode) - eliminates external feedback resistors; enables plug-and-play integration for USB/USB-C, CAN transceiver, and microcontroller I/O rails. |
| Max Output Current | 3 A continuous - sustains full load at 125°C junction temperature with proper PCB thermal design using the exposed thermal pad. |
| Switching Frequency | Selectable: 1.25 MHz (FSW = High) or 2.5 MHz (FSW = Low) - allows trade-off between inductor size (smaller at 2.5 MHz) and EMI profile (lower fundamental at 1.25 MHz). |
| Quiescent Current | 17 µA typical - enables >10-year battery standby life in always-on automotive modules such as telematics wake-up circuits. |
| Power Good Output | Open-drain PG with 95% VOUT threshold - provides reliable system-level sequencing signal for downstream processors or FPGAs without external monitoring circuitry. |
| Thermal Protection | 160°C shutdown with 20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking; auto-recovery after cooldown. |
Pinout & Package
TPS62133AQRGTTQ1 is housed in a thermally enhanced 3-mm × 3-mm VQFN-16 package (RGT) with an exposed thermal pad soldered to AGND/PGND for optimal power dissipation and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2,3 SW | Switch node | Connects to inductor; carries high di/dt switching current - requires short, low-inductance layout to minimize EMI and voltage spikes. |
| 4 PG | Power good open-drain output | Asserts low when VOUT falls below 95% of nominal; requires external pullup to ≤7 V for system sequencing or fault indication. |
| 5 FB | Feedback input (not used) | Internally connected for fixed 5-V operation; must be tied to AGND per datasheet to optimize thermal performance. |
| 6 AGND | Analog ground | Reference for control circuitry; must be directly connected to exposed thermal pad and common ground plane to avoid noise coupling. |
| 7 FSW | Frequency select input | Logic high = 1.25 MHz, logic low = 2.5 MHz; internal pulldown ensures default 2.5 MHz if left floating. |
| 8 DEF | Output voltage scaling input | Logic low = 5 V nominal, logic high = 5.25 V (+5%); enables fine-tuning for margin testing or legacy 5.25-V rail compatibility. |
| 9 SS/TR | Soft-start/tracking input | External capacitor sets startup ramp time; also accepts external voltage for output tracking in multi-rail systems. |
| 10 AVIN | Analog supply input | Provides bias for control circuitry; must be connected to same source as PVIN to prevent supply mismatch and instability. |
| 11,12 PVIN | Power stage supply input | High-current path for MOSFET drivers; requires local 10-µF ceramic decoupling close to pins 11/12 and AGND. |
| 13 EN | Enable input | Active-high logic; internal 400-kΩ pulldown ensures safe shutdown on power-up; threshold ~0.65 V (rising). |
| 14 VOS | Output voltage sense | Direct connection to output capacitor for accurate regulation; improves line/load regulation by compensating for PCB trace resistance. |
| 15,16 PGND | Power ground | Return path for high-current switch node; must be tied to exposed thermal pad and AGND to minimize ground bounce and thermal resistance. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Enables <10-µs transient response to 1-A load steps while maintaining <±1% output deviation - critical for image sensor pixel clock stability in ADAS cameras. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with HBM ±2 kV and CDM ±500 V ESD robustness - meets automotive electronics reliability requirements without derating. |
| Seamless PWM-to-power-save transition | Eliminates audible coil whine and output voltage glitches during light-load transitions - essential for infotainment audio subsystems sharing the same 5-V rail. |
| 100% duty-cycle mode | Supports VIN as low as 5.1 V (at 3-A load) while maintaining regulation - extends runtime in 12-V battery systems during deep discharge or cold-crank events. |
| Integrated power-good with sequencing support | Allows cascaded enable timing for multi-rail systems (e.g., 5-V → 3.3-V → 1.8-V) using simple RC networks on EN/PG pins - reduces BOM count vs. discrete supervisors. |
Applications
| ADAS Camera Power Supply | Sensor Fusion Module |
|---|---|
|
Use Scenario: Powers CMOS image sensor, ISP, and interface logic in forward-facing driver assistance camera modules. IC Role / Device Role / Timing Role: Primary 5-V buck regulator supplying analog front-end and digital core; delivers clean, low-noise power with <10-µs transient recovery. Use Value: Maintains pixel clock integrity under rapid illumination changes (e.g., tunnel exit), preventing image artifacts due to supply droop. |
Use Scenario: Supplies synchronized 5-V rails to multiple inertial measurement units (IMUs), radar preamps, and CAN transceivers in autonomous vehicle sensor hubs. IC Role / Device Role / Timing Role: Centralized power source enabling precise inter-sensor timing alignment via shared PG and soft-start signals. Use Value: Ensures simultaneous power-up across sensors to eliminate timestamp skew in fused data streams. |
| Infotainment Telematics | CAN/USB Power Distribution |
|
Use Scenario: Provides main 5-V supply for LTE modem, GNSS receiver, and Bluetooth/Wi-Fi SoC in automotive head units and telematics control units (TCUs). IC Role / Device Role / Timing Role: High-efficiency primary converter operating in power-save mode during cellular idle states to extend battery backup duration. Use Value: Achieves <90% efficiency at 10-mA load, reducing thermal load in sealed enclosures and enabling fanless TCU designs. |
Use Scenario: Generates isolated 5-V outputs for OBD-II CAN transceivers and USB host controllers in gateway ECUs. IC Role / Device Role / Timing Role: Dual-role regulator supporting both CAN FD physical layer (requiring stable 5 V) and USB 2.0 enumeration (requiring monotonic start-up). Use Value: Built-in soft-start and pre-bias start-up prevent USB enumeration failures during hot-plug events or brownout recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130AQRGTTQ1 | Adjustable output (0.9–6 V) with external resistor divider; identical pinout and package. | Requires external FB resistors; suited for designs needing flexible VOUT or future voltage scaling. | Select when output voltage may change across variants or require margin testing at ±5%. |
| TPS62150AQRGTTQ1 | Same 3-A rating, 3–17 V input, but optimized for 1.8–5.5 V adjustable output; pin-to-pin compatible. | Lacks fixed 5-V option; higher quiescent current (25 µA typ.) and no DEF pin for +5% scaling. | Prefer for lower-VOUT rails (e.g., 3.3 V, 2.5 V) where TPS62133AQRGTTQ1's fixed 5-V output is unnecessary. |
Compared with TPS62130AQRGTTQ1, the TPS62133AQRGTTQ1 saves board space and BOM cost by eliminating FB resistors while delivering identical thermal, transient, and sequencing performance. Against TPS62150AQRGTTQ1, it offers tighter 5-V regulation and lower IQ - making it optimal for dedicated 5-V automotive subsystems.
Availability
TPS62133AQRGTTQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, infotainment telematics units, and CAN/USB power distribution systems requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for TPS62133AQRGTTQ1 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 experience in high-reliability power management solutions.
The TPS6213xA-Q1 product line was designed specifically for automotive ADAS, infotainment, and body electronics - emphasizing functional safety readiness, wide-input operation, and seamless light-load efficiency without compromising transient performance.
FAQ
What is the output voltage tolerance of the TPS62133AQRGTTQ1 under full load and temperature range?
The TPS62133AQRGTTQ1 delivers 5 V with ±1.8% accuracy in PWM mode across –40°C to +125°C junction temperature and input voltages from 3 V to 17 V at full 3-A load. This specification accounts for line, load, and temperature variation - verified per TI's SLVSCC2E datasheet Section 7.5 - ensuring reliable operation in demanding automotive environments without external trimming.
Does the TPS62133AQRGTTQ1 support pre-biased start-up, and how does it behave during hot insertion?
Yes, the TPS62133AQRGTTQ1 supports monotonic pre-biased start-up: when enabled into a pre-charged output, both high- and low-side FETs remain off until the internal soft-start ramp exceeds the existing VOUT. This prevents reverse current flow and ensures controlled voltage rise - critical for hot-plug USB or CAN interfaces. The device maintains this behavior regardless of SS/TR capacitor value or external tracking voltage.
How does the DEF pin affect regulation accuracy and what happens if it's left unconnected?
The DEF pin selects between nominal 5 V (DEF = GND) and +5% scaled 5.25 V (DEF = VIN). When left unconnected, the internal pulldown resistor pulls DEF low, defaulting to 5 V output. Regulation accuracy remains ±1.8% for the selected output level in PWM mode. No degradation in stability or efficiency occurs with either setting - both are fully characterized in the datasheet's Electrical Characteristics table.
What thermal derating applies to the TPS62133AQRGTTQ1 at 125°C ambient in a standard 2-layer PCB layout?
At 125°C ambient, the TPS62133AQRGTTQ1's maximum continuous output current is limited by junction temperature. With the recommended 2-layer PCB layout (2 oz copper, 1-in² thermal pad area), RθJA ≈ 45°C/W means ~70°C rise at 3 A - keeping TJ ≈ 195°C, exceeding the 150°C absolute max. Derating to ~2.2 A ensures TJ ≤ 125°C. For full 3-A operation at high ambient, use 4-layer boards with internal ground/power planes and thermal vias under the exposed pad.
Can the TPS62133AQRGTTQ1 be used in parallel for higher current, and what synchronization capability does it offer?
No, the TPS62133AQRGTTQ1 does not support current-sharing or master-slave synchronization. Its FSW pin only selects between two fixed frequencies (1.25 MHz / 2.5 MHz); there is no external clock input or phase-sync feature. Parallel operation would cause beat-frequency EMI and unstable current sharing. For >3-A requirements, TI recommends the pin-compatible TPS62140A-Q1 (4-A) or TPS62160A-Q1 (1-A) in multi-phase configurations with external controllers.
TPS62133AQRGTTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 16-VFQFN Exposed Pad
- 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):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
TPS62133AQRGTTQ1 FAQ
1.How can I place an order for TPS62133AQRGTTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62133AQRGTTQ1 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 TPS62133AQRGTTQ1 reliable?
The price and inventory of TPS62133AQRGTTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62133AQRGTTQ1 is usually 5 days.
3.What payment methods are accepted for TPS62133AQRGTTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62133AQRGTTQ1 transactions.
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4.How is shipping managed for TPS62133AQRGTTQ1?
TPS62133AQRGTTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62133AQRGTTQ1 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 TPS62133AQRGTTQ1?
For technical support, including TPS62133AQRGTTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62133AQRGTTQ1 requirements.
6.How does Aetrix verify that TPS62133AQRGTTQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62133AQRGTTQ1 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 TPS62133AQRGTTQ1 meets industry standards.
7.What is the process for return or replacement of TPS62133AQRGTTQ1?
All TPS62133AQRGTTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62133AQRGTTQ1, 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 TPS62133AQRGTTQ1 part is unused and in its original packaging.
Return procedure for TPS62133AQRGTTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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