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Texas Instruments TPS53316RGTR
- Part No.:
- TPS53316RGTR
- Manufacturer:
- Texas Instruments
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
TPS53316RGTR.pdf
- Description:
- IC REG BUCK ADJ 5A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,195
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Product details
Overview
TPS53316RGTR from Texas Instruments is a high-efficiency, 5-A synchronous step-down regulator with integrated high- and low-side N-channel MOSFETs, 2.9 V to 6 V input range, adjustable output from 0.6 V to 0.8 × VIN, and support for all-MLCC output capacitors in a 3 mm × 3 mm QFN-16 package.
For engineers reviewing the TPS53316RGTR datasheet, TPS53316RGTR pinout, TPS53316RGTR application, or TPS53316RGTR equivalent, this device delivers 96% peak efficiency, selectable switching frequencies (750 kHz / 1.1 MHz / 2 MHz), configurable overcurrent thresholds (4.5 A or 6.5 A), prebias start-up capability, and integrated soft-stop output discharge - critical for compact, high-density power rails in portable and embedded systems.
Technical Context
The TPS53316RGTR employs voltage-mode control with a proprietary SmoothPWM™ auto-skip Eco-Mode™ for light-load efficiency optimization. Its internal architecture integrates dual N-MOSFETs with RDS(on) of 22 mΩ (3.3 VIN) / 18 mΩ (5 VIN), a 0.6 V precision reference, and a type-III compensation-compatible COMP pin.
Three operational modes - Forced Continuous Conduction Mode (FCCM), Discontinuous Conduction Mode (DCM) via DE mode, and High-Efficiency Fixed-Frequency (HEF) mode - are selected via the PS pin resistor network. Frequency and overcurrent threshold are independently configured using external resistors on the RF/OC pin, enabling precise system-level trade-offs between transient response, efficiency, and EMI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.9 V to 6 V - supports single-rail operation from 3.3 V or 5 V intermediate bus without auxiliary bias supply. |
| Output Current | Continuous 5 A - enables full-power delivery to SoCs, FPGAs, and DSPs without external current sharing. |
| Switching Frequencies | 750 kHz / 1.1 MHz / 2 MHz - selectable via RF/OC pin resistor; higher frequencies allow smaller inductors and faster transient response. |
| OCP Threshold Options | 4.5 A or 6.5 A - configurable per application safety margin and thermal budget; validated across input/output conditions. |
| Efficiency | 96% peak - achieved via low RDS(on), optimized gate drive, and SmoothPWM™ skip mode; >90% at 100 mA load. |
| Output Voltage Range | 0.6 V to 0.8 × VIN - supports core voltages for modern processors and memory interfaces with tight regulation tolerance. |
| Package | 3 mm × 3 mm, 16-pin QFN with PowerPad - RoHS-compliant, thermally enhanced for ≤125°C junction operation. |
Pinout & Package
TPS53316RGTR uses a 3 mm × 3 mm, 16-pin QFN package (RGT suffix) with exposed thermal PowerPad. The package includes three SW pins (5, 6, 7), two VIN pins (13, 14), two PGND pins (15, 16), and dedicated analog ground (AGND, Pin 11) for noise-sensitive feedback paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable input | Logic-controlled startup; internally pulled up to VIN via 2.25 MΩ; supports UVLO-independent sequencing. |
| 2 RF/OC | Frequency & OCP configuration | 10-µA current source; resistor-to-GND sets switching frequency and overcurrent threshold simultaneously. |
| 3 PGD | Power good open-drain output | Asserts high when FB is within ±17% of 0.6 V reference; requires external pull-up for system monitoring. |
| 4 VBST | Bootstrap supply | Connects bootstrap capacitor between VBST and SW; enables high-side MOSFET gate drive above VIN. |
| 5–7 SW | Switch node | Three paralleled pins reduce inductance and thermal resistance for high-current inductor connection. |
| 8 PS | Mode selection | 10-µA current source; resistor network selects FCCM, DE, or HEF mode and soft-start multiplier. |
| 9 COMP | Error amplifier compensation | Type-III compensation node; connects external RC network for loop stability across load/transient conditions. |
| 10 FB | Voltage feedback input | Monitors output via resistor divider; sets OVP/UVP thresholds and PGD logic based on 0.6 V reference. |
| 11 AGND | Analog ground | Separate ground return for feedback, compensation, and reference circuitry to minimize noise coupling. |
| 12 VREG3 | 3.3 V LDO output | Internal analog supply; enabled by EN; powers internal circuitry and can serve as bias for external components. |
| 13–14 VIN | Main input supply | Dual pins reduce IR drop and improve current handling for 2.9–6 V input; also supplies gate driver. |
| 15–16 PGND | Power ground | High-current return path for MOSFETs and inductor; separate from AGND to avoid ground bounce. |
| PowerPad | Thermal pad | Must be soldered to PCB ground plane using ≥4 vias; primary thermal path for junction-to-board conduction (RθJB = 18.3°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| SmoothPWM™ Auto-Skip Eco-Mode™ | Enables >90% efficiency at 100 mA load while maintaining seamless CCM-to-DCM transition and fast transient recovery. |
| All-ceramic output capacitor support | Eliminates electrolytic capacitors; reduces board area and improves reliability with two 22-µF MLCCs for full 5-A solution. |
| Prebias start-up functionality | Allows safe startup into precharged output rail without reverse current or output overshoot - essential for hot-swap and multi-rail systems. |
| Soft-stop output discharge | Activates internal 60-Ω discharge transistor upon disable to rapidly collapse output voltage and prevent backfeeding. |
| Comprehensive protection suite | Includes overcurrent (high-/low-side), overvoltage, undervoltage, overtemperature (140°C shutdown), and input UVLO with hysteresis. |
| Configurable soft-start time | Standard 400 µs or 4× extended (1.6 ms) via PS pin resistor; prevents inrush current and stabilizes sequencing in complex power trees. |
Applications
| Point-of-Load for FPGA Core Rails | DDR Memory Termination Regulator |
|---|---|
|
Use Scenario: Powers 0.85 V–1.2 V core voltage of Xilinx Artix-7 or Intel Cyclone V FPGAs in space-constrained industrial controllers. IC Role / Device Role / Timing Role: Primary synchronous buck converter delivering regulated core voltage with <1% output ripple and <50 µs load-step response. Use Value: Achieves 95% efficiency at 3 A load using only ceramic capacitors and fits within 200 mm² PCB area - reducing thermal mass and enabling fanless operation. |
Use Scenario: Supplies 0.6 V DDR3/DDR4 VTT termination rail with tight tracking and fast transient response in telecom baseband modules. IC Role / Device Role / Timing Role: Precision-tracking buck regulator with 0.6 V reference and ±1.25% tolerance; supports dynamic VTT scaling during memory access bursts. Use Value: Maintains <±10 mV regulation under 0–3 A load steps via DE mode operation and type-III compensation - eliminating need for external error amplifiers. |
| USB-C PD Sink Power Path | Industrial IoT Sensor Hub Supply |
|
Use Scenario: Steps down 5 V USB-C PD input to 3.3 V for microcontroller, transceivers, and analog front-end in portable test equipment. IC Role / Device Role / Timing Role: Compact, high-efficiency DC-DC stage with prebias start-up to handle variable-source USB-C negotiation and hot-plug events. Use Value: Delivers 94% efficiency at 1 A with 750 kHz switching, enabling ultra-low-noise 3.3 V rail and meeting CISPR-32 Class B EMI limits without shielding. |
Use Scenario: Generates stable 1.8 V and 3.3 V rails from wide-input 3.3–5.5 V battery or PoE source in edge-node sensor aggregators. IC Role / Device Role / Timing Role: Primary buck regulator supporting input UVLO, thermal shutdown, and PGD signaling for firmware-controlled power sequencing. Use Value: Operates reliably from –40°C to 85°C with integrated protections; eliminates discrete supervisor ICs and reduces BOM count by 3 components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53355RGLR | 6 A rated, 2.9–6 V input, same 3 mm × 3 mm QFN but with differential sensing and enhanced light-load efficiency. | Preferred for higher-current FPGA cores (>5 A) or where differential remote sensing is required for <±5 mV accuracy. | Select TPS53355RGLR when output current exceeds 5 A or when layout-induced FB trace resistance demands differential sensing. |
| MP2315GJ-Z | 5 A, 4.5–26 V input, smaller 2 mm × 2 mm QFN-8, no PS/RF/OC configurability - fixed 500 kHz fSW and 6.5 A OCP. | Suitable for cost-sensitive, wide-input industrial sensors where programmability and multi-frequency flexibility are unnecessary. | Choose MP2315GJ-Z for simplified design-in, lower unit cost, and wider input range - but accept fixed configuration and reduced feature set. |
Compared with TPS53316RGTR, TPS53355RGLR offers higher current headroom and differential sensing for precision loads, while MP2315GJ-Z trades configurability for size and input voltage range - making TPS53316RGTR optimal for balanced performance, density, and design flexibility in 3.3 V/5 V intermediate bus systems.
Availability
TPS53316RGTR is available at Aetrix Electronics and suitable for point-of-load power delivery, DDR memory termination, USB-C PD sink conversion, and industrial IoT sensor hub supply requiring stable component supply and long-term production continuity.
Supply support for TPS53316RGTR 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 TPS533xx family was designed specifically for high-density, low-voltage point-of-load applications in networking, computing, and industrial systems - emphasizing integration, thermal efficiency, and robust protection without external complexity.
FAQ
What input voltage range does the TPS53316RGTR support?
The TPS53316RGTR supports an input voltage range of 2.9 V to 6 V, enabling direct operation from common intermediate rails like 3.3 V and 5 V without auxiliary bias supplies. Its VIN UVLO threshold is 2.8 V with 120 mV hysteresis, ensuring reliable startup and shutdown behavior across temperature and line variations. This range is validated across all operating modes and output configurations specified in the SLUSAP5A datasheet.
How is the switching frequency configured on the TPS53316RGTR?
The TPS53316RGTR switching frequency is configured via external resistors connected to the RF/OC pin, which sources a 10-µA current. Specific resistor values select 750 kHz, 1.1 MHz, or 2 MHz operation - for example, 24.3 kΩ to GND yields 750 kHz with 4.5 A OCP, while 105 kΩ sets 2 MHz with 4.5 A OCP. All combinations are factory-characterized and documented in Table 1 of the datasheet.
Does the TPS53316RGTR support prebias start-up?
Yes, the TPS53316RGTR supports prebias start-up functionality, allowing safe turn-on into an already charged output rail without reverse current flow or output voltage overshoot. This behavior is enabled by internal circuitry that monitors SW and FB during enable assertion and is verified across input voltages from 2.9 V to 6 V and output voltages from 0.6 V to 3.3 V.
What protection features are integrated into the TPS53316RGTR?
The TPS53316RGTR integrates overcurrent (high- and low-side FET), overvoltage, undervoltage, overtemperature (140°C shutdown with 40°C hysteresis), and input UVLO protection. Each is independently tested and characterized - for instance, OCP triggers within 1.7 µs of fault detection, and thermal shutdown activates at 130–150°C junction temperature with automatic hiccup recovery after 14.5 ms.
Can the TPS53316RGTR operate with only ceramic output capacitors?
Yes, the TPS53316RGTR is explicitly designed to support all-MLCC output capacitor configurations, requiring only two 22-µF ceramic capacitors for full 5-A operation. This capability is enabled by its voltage-mode control architecture, optimized loop compensation, and low-noise reference - eliminating the need for bulk electrolytic or tantalum capacitors and improving reliability and temperature stability.
TPS53316RGTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SmoothPWM™, Eco-Mode™
- Package/Case:
- 16-VFQFN Exposed Pad
- 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):
- 2.9V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 4.8V
- Current - Output:
- 5A
- Frequency - Switching:
- 725kHz, 1.1Mhz, 1.8MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
TPS53316RGTR FAQ
1.How can I place an order for TPS53316RGTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53316RGTR 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 TPS53316RGTR reliable?
The price and inventory of TPS53316RGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53316RGTR is usually 5 days.
3.What payment methods are accepted for TPS53316RGTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53316RGTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53316RGTR?
TPS53316RGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53316RGTR 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 TPS53316RGTR?
For technical support, including TPS53316RGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53316RGTR requirements.
6.How does Aetrix verify that TPS53316RGTR is sourced from the original manufacturer or authorized distributors?
All TPS53316RGTR 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 TPS53316RGTR meets industry standards.
7.What is the process for return or replacement of TPS53316RGTR?
All TPS53316RGTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS53316RGTR, 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 TPS53316RGTR part is unused and in its original packaging.
Return procedure for TPS53316RGTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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