My Inquiry
My Account
Texas Instruments TPS62172QDSGRQ1
- Part No.:
- TPS62172QDSGRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS62172QDSGRQ1.pdf
- Description:
- IC REG BUCK 3.3V 500MA 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,384
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62172QDSGRQ1 from Texas Instruments is an automotive-grade synchronous step-down DC-DC converter with fixed 3.3-V output, DCS-Control™ topology, 3-V to 17-V input range, up to 500-mA output current, and integrated power-good (PG) signal. It operates in PWM and seamless Power Save Mode for high efficiency across load range and is used in ADAS camera power supplies.
For engineers reviewing the TPS62172QDSGRQ1 datasheet, TPS62172QDSGRQ1 pinout, TPS62172QDSGRQ1 application, or TPS62172QDSGRQ1 equivalent, key selection criteria include its AEC-Q100 qualification (–40°C to 125°C), 2.25-MHz switching frequency, 17-µA quiescent current, 100% duty-cycle capability, and WSON-8 package compatibility with space-constrained automotive modules.
Technical Context
The TPS62172QDSGRQ1 implements DCS-Control™, combining fast transient response via direct output voltage sensing with a stable internal voltage feedback loop for precise DC regulation. Its control architecture supports both continuous conduction mode (CCM) at nominal 2.25 MHz and discontinuous conduction mode (DCM) in Power Save Mode without output disturbance.
It integrates undervoltage lockout (2.7 V threshold, 180 mV hysteresis), thermal shutdown (160°C trip, 20°C hysteresis), short-circuit protection, and open-drain PG signaling with 92–98% rising threshold. The fixed 3.3-V output eliminates external feedback resistors while retaining full functional safety support per ISO 26262 documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports Li-ion battery packs and 12-V automotive rails without pre-regulation |
| Output Voltage | Fixed 3.3 V - eliminates external resistor divider, reduces BOM count and layout sensitivity |
| Max Output Current | 500 mA - sufficient for powering image sensors, microcontrollers, and interface ICs in ADAS modules |
| Switching Frequency | Typ. 2.25 MHz - enables use of compact 2.2-µH inductors and improves transient response |
| Quiescent Current | 17 µA - maintains ultra-low standby power in always-on vehicle subsystems |
| Power-Good Threshold | Rising: 92–98% of 3.3 V - provides reliable rail sequencing signal for downstream logic and processors |
| Operating Junction Temp | –40°C to 125°C - meets AEC-Q100 Grade 1 requirements for under-hood and cabin electronics |
Pinout & Package
The TPS62172QDSGRQ1 is housed in a thermally enhanced 2 mm × 2 mm WSON-8 package (DSG) with exposed thermal pad soldered to AGND for optimal power dissipation and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND | Power ground | High-current return path for switch node; must be low-inductance connection to minimize noise |
| VIN | Supply input | Primary input rail (3–17 V); requires local 10-µF ceramic decoupling capacitor |
| EN | Enable control | Active-high logic input; internal 400-kΩ pulldown prevents floating; enables power-rail sequencing |
| AGND | Analog ground | Reference for FB, VOS, and control circuitry; must be connected to exposed thermal pad |
| VOS | Voltage sense | Direct connection to output capacitor for accurate DCS-Control loop compensation |
| FB | Feedback input | Internally tied to fixed 3.3-V divider; recommended to connect to AGND for improved thermal performance |
| SW | Switch node | Drives external 2.2-µH inductor; high dv/dt node requiring tight layout and minimal trace area |
| PG | Power-good output | Open-drain signal indicating regulated 3.3-V output; requires external pullup resistor (≤100 kΩ) |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Enables simultaneous fast transient response (<10 µs recovery) and stable DC regulation without external compensation |
| AEC-Q100 Grade 1 qualification | Validated for automotive operation from –40°C to +125°C junction temperature with H2/HBM and C4B ESD ratings |
| Seamless Power Save Mode | Automatically transitions between PWM and PSM without output voltage glitch or audible noise |
| 100% duty-cycle operation | Maintains regulation down to VIN ≈ VOUT + (IOUT × RDS(on)), extending battery runtime in low-input scenarios |
| Integrated protection functions | Includes UVLO, thermal shutdown, overcurrent limiting, and short-circuit recovery without external components |
Applications
| ADAS Camera Module | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers CMOS image sensor and ISP in forward-facing driver assistance camera. IC Role / Device Role / Timing Role: Primary 3.3-V POL regulator delivering clean, sequenced power with PG confirmation before sensor initialization. Use Value: 2.25-MHz switching minimizes EMI near sensitive analog video paths; 17-µA IQ extends sleep-mode battery life. | Use Scenario: Supplies 3.3-V logic for door module microcontrollers and LIN transceivers. IC Role / Device Role / Timing Role: Fixed-output buck converter enabling single-rail simplification and eliminating feedback resistor placement errors. Use Value: AEC-Q100 qualification ensures reliability across temperature cycling; WSON-8 footprint saves PCB area in space-limited door panels. |
| Infotainment Head Unit | Powertrain Sensor Interface |
Use Scenario: Provides 3.3-V supply to audio codec and touch controller in center-stack display system. IC Role / Device Role / Timing Role: Secondary POL regulator with EN-controlled sequencing after main 5-V rail stabilizes. Use Value: PG output synchronizes firmware boot sequence; 100% duty cycle sustains operation during cold-cranking dips to 6 V. | Use Scenario: Powers Hall-effect position sensor and signal conditioner in transmission control unit. IC Role / Device Role / Timing Role: Isolated 3.3-V source with robust ESD immunity (±2-kV HBM) for noisy engine bay environments. Use Value: Thermal shutdown (160°C) and overcurrent protection prevent latch-up during fault conditions; small WSON-8 eases conformal coating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62171QDSGRQ1 | Fixed 1.8-V output; identical pinout, package, and electrical specs except VOUT | Used where lower core voltage required for MCU or FPGA I/O banks | Select when system requires 1.8 V instead of 3.3 V; no layout change needed |
| LM61480QRNXTQ1 | Higher 3.5-A rating, 2.1-MHz switching, different pinout (16-pin QFN), no integrated PG | Suitable for higher-current loads like multi-sensor fusion ECUs | Choose for >500-mA demand; requires new layout and external PG circuit if needed |
Compared with TPS62171QDSGRQ1, the TPS62172QDSGRQ1 offers higher output voltage for legacy 3.3-V peripherals; compared with LM61480QRNXTQ1, it delivers smaller footprint and integrated PG at lower current capacity-ideal for cost- and space-sensitive ADAS edge nodes.
Availability
TPS62172QDSGRQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, body electronics systems, and infotainment head units requiring stable component supply, automotive qualification, and long-term production continuity.
Supply support for TPS62172QDSGRQ1 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 specializing in analog, embedded processing, and power management solutions with broad automotive design expertise.
The TPS6217x-Q1 product line delivers high-density, AEC-Q100-qualified DC-DC converters optimized for ADAS, infotainment, and body electronics where small size, low IQ, and functional safety compliance are critical.
FAQ
What is the output voltage of the TPS62172QDSGRQ1?
The TPS62172QDSGRQ1 has a factory-programmed fixed output voltage of 3.3 V. Unlike the adjustable TPS62170-Q1, it does not require external feedback resistors. The FB pin is internally connected to the voltage divider and should be tied to AGND for optimal thermal performance, as specified in the datasheet.
Does the TPS62172QDSGRQ1 support power-rail sequencing?
Yes, the TPS62172QDSGRQ1 supports sequencing via its active-high EN pin and open-drain PG output. EN can be driven by another rail's PG signal to enforce startup order, while its own PG pin (requiring an external pullup) asserts high when VOUT reaches 92–98% of 3.3 V, enabling coordinated system initialization in automotive ECUs.
What package type and dimensions does the TPS62172QDSGRQ1 use?
The TPS62172QDSGRQ1 uses the WSON-8 (DSG) package, measuring 2.00 mm × 2.00 mm with an exposed thermal pad. This thermally enhanced package requires soldering the pad to AGND for proper heat dissipation and mechanical reliability, as confirmed in TI's Mechanical, Packaging, and Orderable Information section.
Is the TPS62172QDSGRQ1 qualified for automotive applications?
Yes, the TPS62172QDSGRQ1 is AEC-Q100 qualified for automotive use with Grade 1 temperature range (–40°C to +125°C junction), H2-level HBM ESD (±2 kV), and C4B-level CDM ESD (±500 V). It also includes functional safety documentation to support ISO 26262 ASIL-B system development.
How does the DCS-Control™ topology benefit the TPS62172QDSGRQ1 in automotive designs?
The DCS-Control™ topology in the TPS62172QDSGRQ1 delivers fast transient response (<10 µs) and stable regulation without external compensation components. It combines direct output voltage sensing with a voltage feedback loop, enabling consistent performance across temperature, input voltage, and load variations-critical for camera and sensor power in dynamically changing vehicle environments.
TPS62172QDSGRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 8-WFDFN 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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
TPS62172QDSGRQ1 FAQ
1.How can I place an order for TPS62172QDSGRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62172QDSGRQ1 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 TPS62172QDSGRQ1 reliable?
The price and inventory of TPS62172QDSGRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62172QDSGRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62172QDSGRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62172QDSGRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62172QDSGRQ1?
TPS62172QDSGRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62172QDSGRQ1 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 TPS62172QDSGRQ1?
For technical support, including TPS62172QDSGRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62172QDSGRQ1 requirements.
6.How does Aetrix verify that TPS62172QDSGRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62172QDSGRQ1 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 TPS62172QDSGRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62172QDSGRQ1?
All TPS62172QDSGRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62172QDSGRQ1, 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 TPS62172QDSGRQ1 part is unused and in its original packaging.
Return procedure for TPS62172QDSGRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62172QDSGRQ1 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
