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Texas Instruments TPS62163DSGT
- Part No.:
- TPS62163DSGT
- Manufacturer:
- Texas Instruments
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS62163DSGT.pdf
- Description:
- IC REG BUCK 5V 1A 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:9,063
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Product details
Overview
TPS62163DSGT from Texas Instruments is a synchronous step-down DC/DC converter with DCS-Control™ topology, designed for high-power-density POL applications. It delivers up to 1 A continuous output current at fixed 1.8 V from 3–17 V input, features integrated power good (PG) output, 100% duty cycle operation, and operates at ~2.25 MHz switching frequency for compact 2.2 µH inductor and 22 µF output capacitor designs.
For engineers reviewing the TPS62163DSGT datasheet, TPS62163DSGT pinout, TPS62163DSGT application, or TPS62163DSGT equivalent, key selection criteria include its fixed 1.8 V output, WSON-8 (2.0 mm × 2.0 mm) package with exposed thermal pad, seamless PWM-to-power-save mode transition, 17 µA quiescent current, and compatibility with Li-ion battery and 12-V rail systems.
Technical Context
The TPS62163DSGT implements DCS-Control™-a hybrid regulation architecture combining voltage-mode feedback with direct AC output voltage sensing via fast comparator, enabling stable regulation with low-ESR ceramic capacitors and rapid transient response. Its control loop maintains constant nominal switching frequency (~2.25 MHz) in PWM mode and linearly scales frequency downward in power save mode for light-load efficiency.
It integrates high-side (300–600 mΩ) and low-side (120–200 mΩ) MOSFETs, supports 100% duty cycle down to VIN ≈ VOUT + 15%, and includes undervoltage lockout (2.7 V threshold, 180 mV hysteresis), thermal shutdown (160°C), short-circuit protection, and open-drain PG with 92–98% rising threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports single/dual Li-ion batteries and standard 12-V intermediate rails without external pre-regulation. |
| Output Voltage | Fixed 1.8 V - eliminates external feedback resistors, reduces BOM count, and ensures ±3% initial accuracy over line/load/temperature. |
| Max Output Current | 1 A continuous - sufficient for FPGA I/O banks, microcontroller cores, and DSP subsystems in portable embedded systems. |
| Switching Frequency | Typ. 2.25 MHz - enables use of 2.2 µH inductors and 22 µF ceramic output capacitors, minimizing solution footprint and EMI filtering needs. |
| Quiescent Current | 17 µA typical - sustains >85% efficiency at 10 mA load, critical for always-on battery-powered sensors and IoT endpoints. |
| Power Good Output | Open-drain PG with 92–98% VOUT rising threshold - provides reliable sequencing signal for downstream logic or processors without external monitoring circuitry. |
| Thermal Protection | 160°C shutdown with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
| Package | WSON-8 (DSG), 2.0 mm × 2.0 mm with exposed thermal pad - requires soldering pad to AGND for optimal thermal performance (RθJA = 61.8°C/W). |
Pinout & Package
TPS62163DSGT is housed in an 8-pin WSON (DSG) package measuring 2.00 mm × 2.00 mm with an exposed thermal pad that must be soldered to AGND for thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (Pin 1) | Power ground return | Low-impedance path for high-frequency switch node current; must be connected directly to input capacitor ground plane. |
| VIN (Pin 2) | Main supply input | Accepts 3–17 V; requires local 10 µF ceramic decoupling capacitor placed within 3 mm of pin. |
| EN (Pin 3) | Enable control input | Active-high logic; internal 400 kΩ pull-down allows safe default-off behavior; enables power-rail sequencing when driven by another regulator's PG. |
| AGND (Pin 4) | Analog ground reference | Separate ground for FB/VOS/PG circuits; must be tied to PGND at single point near IC or via thermal pad to minimize noise coupling. |
| FB (Pin 5) | Feedback input | Internally connected to fixed 1.8 V divider; recommended to tie to AGND on TPS62163DSGT for improved thermal performance and stability. |
| VOS (Pin 6) | Output voltage sense | Direct connection to output capacitor anode; enables accurate regulation by sensing true output voltage, not SW node ripple. |
| SW (Pin 7) | Switch node | Drives external 2.2 µH inductor; high dv/dt node requiring tight layout, minimal trace length, and guard ring to reduce EMI. |
| PG (Pin 8) | Power good indicator | Open-drain output requiring external pull-up (to ≤7 V); sinks 2 mA max; goes high-impedance during shutdown, UVLO, or thermal fault. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Combines fast AC output sensing with DC voltage feedback to achieve <1% output voltage deviation under 1-A load transients and <10 mV ripple with 22 µF ceramic output cap. |
| Seamless power save mode | Automatically transitions between PWM and PSM without output voltage glitch or audible coil whine, maintaining >80% efficiency from 1 mA to 1 A load. |
| 100% duty cycle operation | Enables regulation down to VIN as low as 1.8 V + (IOUT × RDS(on)_HS), extending runtime in single-cell Li-ion systems until battery reaches 2.0 V. |
| Integrated protection suite | Includes overcurrent limiting (1.45–2.45 A), thermal shutdown (160°C), undervoltage lockout (2.7 V), and short-circuit recovery - no external fault-handling circuitry required. |
| Small solution size | Full 1-A 1.8 V regulator fits within 12 mm² PCB area using only 2.2 µH inductor, 10 µF input cap, 22 µF output cap, and no external feedback components. |
Applications
| Li-ion Powered Mobile PC Core Rail | 12-V Industrial Sensor Node POL |
|---|---|
Use Scenario: Powering ARM Cortex-A series processor core voltage (VDD_CORE) in tablet-PCs using single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 1.8 V at up to 1 A with dynamic voltage scaling support via EN pin control. Use Value: 100% duty cycle extends usable battery range by 12% compared to non-100% ICs; 2.25 MHz switching avoids AM radio band interference. |
Use Scenario: Generating 1.8 V for low-power microcontrollers and RS-485 transceivers in factory-floor sensor nodes powered from 12-V bus. IC Role / Device Role / Timing Role: Point-of-load converter with PG output used to enable MCU reset and wake-up sequence after power-up. Use Value: 17 µA quiescent current enables >5-year battery life in sleep mode; DCS-Control™ ensures <50 mV undershoot during 100 mA step load. |
| FPGA I/O Bank Supply | Digital Still Camera Image Sensor Bias |
Use Scenario: Supplying 1.8 V to Spartan-7 or Artix-7 FPGA I/O banks requiring clean, well-regulated voltage with fast transient response. IC Role / Device Role / Timing Role: High-efficiency synchronous buck providing low-noise 1.8 V with VOS-sensed feedback for precise regulation across temperature. Use Value: VOS pin placement minimizes PCB trace inductance impact, achieving ±1.5% total output variation over –40°C to +125°C. |
Use Scenario: Biasing CMOS image sensor analog front-end in DSLR cameras where EMI-sensitive pixel readout demands ultra-low ripple. IC Role / Device Role / Timing Role: Compact 1.8 V supply with 22 µF X7R ceramic output cap and 2.2 µH shielded inductor for <10 mVpp ripple. Use Value: DCS-Control™ topology suppresses switching noise at fundamental and harmonics, preventing image banding artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62160DSGT | Adjustable output (0.9–6 V) via external resistor divider; same pinout, package, and specs otherwise. | Requires two external resistors and layout space for feedback network; less suitable for cost-sensitive, fixed-voltage-only designs. | Select TPS62160DSGT only if output voltage flexibility or future design reuse across multiple VOUTs is required. |
| TPS62172DSGR | Same 1.8 V fixed output but in smaller 2-mm × 2-mm WSON (DSG) package with lower 12 µA IQ and 2.5 MHz fSW. | Higher switching frequency enables 1.5 µH inductor and tighter layout; slightly reduced max output current (0.8 A). | Choose TPS62172DSGR for space-constrained designs needing <15 µA IQ and sub-1-A loads; TPS62163DSGT remains preferred for full 1-A capability. |
Compared with TPS62160DSGT, TPS62163DSGT saves BOM cost and layout area by eliminating feedback resistors; versus TPS62172DSGR, it trades 0.2 A output current headroom for proven 1-A robustness and broader thermal margin in industrial ambient conditions.
Availability
TPS62163DSGT is available at Aetrix Electronics and suitable for Li-ion-powered mobile PCs, 12-V industrial sensor nodes, FPGA I/O banks, and digital still camera image sensor bias applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS62163DSGT 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 technologies, with decades of expertise in high-efficiency DC/DC conversion.
The TPS6216x family was engineered for high-power-density point-of-load regulation in space-constrained, battery- and rail-powered systems-emphasizing small solution size, seamless light-load efficiency, and robust protection for industrial and portable electronics.
FAQ
What is the output voltage of the TPS62163DSGT?
The TPS62163DSGT is a fixed-output synchronous buck converter delivering 1.8 V with ±3% initial accuracy over line, load, and temperature. Unlike adjustable variants such as TPS62160DSGT, it does not require external feedback resistors-its internal resistor divider sets the regulated output, simplifying design and reducing BOM count. This fixed 1.8 V output is optimized for powering FPGA I/O banks, microcontroller cores, and image sensor bias rails.
Does the TPS62163DSGT support 100% duty cycle operation?
Yes, the TPS62163DSGT supports 100% duty cycle operation, allowing regulation when input voltage approaches the 1.8 V output-critical for maximizing runtime in single-cell Li-ion applications. In this mode, the high-side MOSFET remains continuously on while the low-side FET is disabled. The minimum functional input voltage depends on load current and RDS(on), typically enabling operation down to ~2.0 V at light loads. This feature is explicitly documented in the TPS62163DSGT datasheet Section 8.4.4.
What package type does the TPS62163DSGT use?
The TPS62163DSGT uses the 8-pin WSON package (suffix DSG), measuring 2.00 mm × 2.00 mm with an exposed thermal pad. This package is distinct from the VSSOP-8 (DGK) variant used by other members of the TPS6216x family. The exposed pad must be soldered to AGND for thermal dissipation (RθJA = 61.8°C/W) and mechanical reliability. Pinout is identical across DSG-packaged TPS6216x devices, ensuring layout reuse across voltage variants.
How does the power good (PG) function work on the TPS62163DSGT?
The TPS62163DSGT features an open-drain power good (PG) output (Pin 8) that signals when the 1.8 V output is within regulation-rising when VOUT reaches 92–98% of nominal and falling below 87–93%. It requires an external pull-up resistor (to ≤7 V) and can sink up to 2 mA. During shutdown, UVLO, or thermal fault, PG goes high-impedance. This signal enables safe power sequencing in multi-rail systems and is fully compatible with standard logic-level inputs on MCUs or FPGAs.
What is the typical quiescent current of the TPS62163DSGT?
The TPS62163DSGT draws a typical quiescent current (IQ) of 17 µA when enabled and under no load-measured at VIN = 12 V and TJ = 25°C. This ultra-low IQ enables high efficiency (>85%) even at 10 mA output current, making it ideal for always-on battery-powered applications like IoT sensors and portable medical devices. Shutdown current is further reduced to <2.5 µA when EN is pulled low.
TPS62163DSGT 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
TPS62163DSGT FAQ
1.How can I place an order for TPS62163DSGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62163DSGT 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 TPS62163DSGT reliable?
The price and inventory of TPS62163DSGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62163DSGT is usually 5 days.
3.What payment methods are accepted for TPS62163DSGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62163DSGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62163DSGT?
TPS62163DSGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62163DSGT 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 TPS62163DSGT?
For technical support, including TPS62163DSGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62163DSGT requirements.
6.How does Aetrix verify that TPS62163DSGT is sourced from the original manufacturer or authorized distributors?
All TPS62163DSGT 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 TPS62163DSGT meets industry standards.
7.What is the process for return or replacement of TPS62163DSGT?
All TPS62163DSGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62163DSGT, 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 TPS62163DSGT part is unused and in its original packaging.
Return procedure for TPS62163DSGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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