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Texas Instruments TPS53310RGTR
- Part No.:
- TPS53310RGTR
- Manufacturer:
- Texas Instruments
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
TPS53310RGTR.pdf
- Description:
- IC REG BUCK ADJ 3A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,770
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Product details
Overview
TPS53310RGTR from Texas Instruments is a 3-A synchronous step-down DC/DC regulator with integrated high- and low-side N-channel MOSFETs, operating from 2.9 V to 6 V input and delivering adjustable output from 0.6 V to 0.84 × VIN. It features 1.1-MHz fixed-frequency voltage-mode control, hiccup overcurrent protection, internal boot strap switch, and supports all-MLCC output designs. Used in compact power rails for FPGA core supplies and industrial microcontrollers.
For engineers reviewing the TPS53310RGTR datasheet, TPS53310RGTR pinout, TPS53310RGTR application, or TPS53310RGTR equivalent, key selection considerations include its 16-pin VQFN (3 mm × 3 mm) package, 24 mΩ/19 mΩ RDS(on) at 3.3 V/5 V input, soft-stop output discharge, pre-bias startup support, and master/slave interleaving capability for ripple reduction.
Technical Context
The TPS53310RGTR implements voltage-mode PWM control with a 1.1-MHz oscillator and supports five configurable operation modes-FCCM master/slave, diode emulation (DE), and high-efficiency (HEF)-selected via the PS pin resistor network. Its internal error amplifier uses Type III compensation (COMP pin) and references a precision 0.6-V bandgap (FB pin).
It integrates dual N-FETs with low RDS(on), an internal bootstrap switch (VBST), open-drain power-good (PGD), and comprehensive protection including overcurrent (hiccup), overvoltage (117% VREF), undervoltage (83% VREF), and thermal shutdown (140 °C). Synchronization (SYNC) enables ±20% frequency locking for interleaved two-phase operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.9 V to 6 V - Supports wide-input industrial and embedded rails including 5 V and 3.3 V bus-derived supplies. |
| Output Current | Continuous 3 A - Delivers full rated current without external current-sense resistors or heatsinking in typical layouts. |
| Switching Frequency | 1.1 MHz (typ) - Enables use of small 1-µH inductors and reduces EMI filtering requirements. |
| RDS(on) High-Side | 24 mΩ @ 3.3 V VIN, 19 mΩ @ 5 V VIN - Minimizes conduction loss and improves efficiency across common input voltages. |
| Feedback Reference | 0.6 V ±1.25% - Enables precise output regulation down to 0.6 V for low-voltage logic cores. |
| Protection Features | Hiccup OCP, OVP/UVP (±17% VREF), thermal shutdown (140 °C), soft-stop discharge - Ensures robust fault recovery and system-level reliability. |
| Operating Temperature | –40 °C to +85 °C - Qualified for industrial ambient environments without derating. |
Pinout & Package
TPS53310RGTR is housed in a thermally enhanced 3 mm × 3 mm, 16-pin VQFN package (RGT suffix) with exposed thermal pad. Pin count and layout match TI's standard 16-pin QFN footprint for drop-in compatibility across similar regulators.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | EN, PS | Enable input (pull-up to VDD) and mode-select configuration pin - Determines FCCM/DE/HEF and master/slave behavior via resistor divider. |
| 2, 11 | SYNC, AGND | Synchronization interface (bidirectional) and analog ground reference - Enables phase-interleaved operation with second TPS53310RGTR or external clock. |
| 3, 10 | PGD, FB | Open-drain power-good flag and feedback input - PGD asserts high only when FB is within 83–117% of 0.6 V; FB sets output voltage via resistor divider. |
| 4, 9 | VBST, COMP | Bootstrap supply for high-side gate drive and error amplifier compensation node - Requires 0.1 µF ceramic capacitor to SW; COMP accepts Type III network for stability. |
| 5–7, 15–16 | SW, PGND | Power switch node (3 parallel pins) and power ground (2 parallel pins) - Low-inductance routing critical for EMI and efficiency; multiple pins reduce resistance and improve thermal path. |
| 12–14 | VDD, VIN, VIN | Bias supply (2.9–3.5 V) and main power input (2.9–6 V, dual pins) - Dual VIN pins reduce IR drop and enhance current handling for 3-A load. |
Key Features
| Feature | Design Value |
|---|---|
| SmoothPWM™ Auto-Skip Eco-mode™ | Enables >90% efficiency at 100 mA load by reducing switching frequency in light-load DCM, eliminating audible noise and standby power waste. |
| All-MLCC Output Support | Eliminates electrolytic capacitors - allows fully ceramic 3×22 µF output design, improving lifetime, temperature stability, and board space utilization. |
| Pre-bias Startup | Allows safe start-up into pre-charged output rails without reverse current or voltage overshoot - essential for hot-swap and multi-rail sequencing systems. |
| Internal Boot Strap Switch | Removes need for external bootstrap diode - simplifies layout, reduces BOM count, and improves reliability in high-duty-cycle applications. |
| Master-Slave Interleaving | Reduces input RMS current by ~30% and cuts input capacitor size/cost when two TPS53310RGTR devices are synchronized in 180° phase offset. |
Applications
| 5-V Step-Down Rail | 3.3-V Step-Down Rail |
|---|---|
Use Scenario: Converting 5-V system bus to 3.3-V I/O supply for industrial PLC modules with strict EMC limits. IC Role / Device Role / Timing Role: Primary buck regulator providing regulated 3.3-V rail with 1.1-MHz switching and all-ceramic output filter. Use Value: Achieves >94% peak efficiency and meets CISPR-22 Class B conducted emissions with minimal input filtering due to interleaving-capable architecture. | Use Scenario: Powering ARM Cortex-M7 microcontroller core requiring stable 1.2-V supply derived from 3.3-V intermediate rail. IC Role / Device Role / Timing Role: Secondary buck stage operating in HEF mode to maintain >88% efficiency at 50 mA sleep current while supporting fast transient response. Use Value: Soft-start ramp and pre-bias startup ensure clean power sequencing during wake-from-sleep transitions without brownout or reset glitches. |
| FPGA Core Supply | Industrial Sensor Hub |
Use Scenario: Delivering 0.9-V/2.5-A core voltage to Xilinx Artix-7 FPGA in space-constrained edge gateway. IC Role / Device Role / Timing Role: High-current, low-noise point-of-load regulator using forced CCM mode for deterministic switching frequency and minimal output voltage ripple. Use Value: 24 mΩ RDS(on) and 3-A continuous rating enable single-chip solution without external current sensing or thermal derating at 70 °C ambient. | Use Scenario: Powering multi-sensor node (temperature, humidity, IMU) with variable load profile and battery-backed operation. IC Role / Device Role / Timing Role: Main system regulator configured in DE mode to maximize light-load efficiency during 95% sensor idle time. Use Value: Auto-skip Eco-mode™ extends battery life by maintaining >85% efficiency at 10 mA load, while soft-stop discharge prevents backfeed during power-off sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53311RGTR | Latch-off overcurrent protection instead of hiccup; identical pinout, specs, and package. | Better suited for systems requiring immediate fault isolation (e.g., safety-critical power domains) rather than automatic retry. | Select TPS53311RGTR if latch-off OCP is required; otherwise TPS53310RGTR offers smoother recovery in non-critical loads. |
| MP2331GJ-Z | Monolithic 3-A buck with 0.8-V reference, no SYNC or PS pin; 2.5–6 V input, 1.2-MHz switching, smaller 2-mm × 2-mm TSOT23-8 package. | Targeted at cost-sensitive, space-constrained consumer applications where interleaving and multi-mode flexibility are unnecessary. | Choose MP2331GJ-Z for ultra-compact, single-rail designs; TPS53310RGTR remains preferred for industrial systems needing configurability and robustness. |
Compared with TPS53311RGTR, the TPS53310RGTR provides hiccup-style OCP for self-recovery under transient overload, while MP2331GJ-Z trades configurability and thermal performance for footprint and BOM simplicity - making TPS53310RGTR optimal for programmable, high-reliability industrial power rails.
Availability
TPS53310RGTR is available at Aetrix Electronics and suitable for FPGA core supplies, industrial microcontroller rails, sensor hub power management, and telecom line-card DC/DC conversion requiring stable component supply and long-term manufacturability.
Supply support for TPS53310RGTR 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 ICs, with decades of expertise in high-efficiency DC/DC conversion.
The TPS53310RGTR belongs to TI's integrated power stage buck regulator product line, designed specifically for space-constrained, high-current industrial and computing applications demanding low RDS(on), flexible operation modes, and robust protection.
FAQ
What input voltage range does the TPS53310RGTR support?
The TPS53310RGTR supports an input voltage range of 2.9 V to 6 V on the VIN pins, with a separate 2.9 V to 3.5 V bias supply requirement on VDD. This allows direct operation from common 3.3-V and 5-V system rails. The device maintains regulation across this full range while delivering up to 3 A output current, and its UVLO thresholds (2.8 V with 130-mV hysteresis on VIN) ensure reliable startup and shutdown behavior.
How does the PS pin configure operation modes on the TPS53310RGTR?
The PS pin on the TPS53310RGTR selects among five operational modes via resistor-to-ground connections: grounding configures FCCM slave; 24.3 kΩ enables DE slave; 57.6 kΩ activates HEF mode; 174 kΩ sets DE master; and floating/pulling high selects FCCM master. Each mode affects light-load efficiency, frequency behavior, and master/slave synchronization capability. The TPS53310RGTR uses these configurations to optimize trade-offs between ripple, efficiency, and EMI in multi-regulator systems.
Does the TPS53310RGTR support pre-bias startup?
Yes, the TPS53310RGTR supports pre-bias startup, allowing it to safely begin regulation into an already charged output capacitor without causing reverse current flow or output voltage overshoot. This feature is enabled by internal circuitry that monitors SW node voltage during enable assertion and delays high-side FET turn-on until the output settles. Pre-bias startup is critical for hot-swap applications and complex power sequencing in industrial controllers where the TPS53310RGTR may be powered after downstream circuitry.
What protection features are integrated into the TPS53310RGTR?
The TPS53310RGTR integrates hiccup overcurrent protection (OCP), overvoltage protection (OVP) at 117% of 0.6-V reference, undervoltage protection (UVP) at 83% of reference, thermal shutdown at 140 °C with 40 °C hysteresis, and soft-stop output discharge during disable. These protections operate independently and concurrently - for example, OCP triggers after four consecutive overcurrent events, while UVP shuts down the device within 11 µs of sustained low FB voltage. All functions are implemented internally without external components, enhancing system reliability in the TPS53310RGTR's target applications.
Can multiple TPS53310RGTR devices be synchronized for interleaved operation?
Yes, two TPS53310RGTR devices can be synchronized for interleaved operation by connecting their SYNC pins and configuring one as master (PS = 174 kΩ or floating) and the other as slave (PS = GND or 24.3 kΩ). In FCCM mode, the master sends a 180° out-of-phase signal to the slave, reducing input ripple current by ~30% and relaxing input capacitor RMS current requirements. The TPS53310RGTR tolerates ±20% frequency deviation on SYNC, enabling robust synchronization even with component tolerances or temperature drift.
TPS53310RGTR 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):
- 5.04V
- Current - Output:
- 3A
- Frequency - Switching:
- 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
TPS53310RGTR FAQ
1.How can I place an order for TPS53310RGTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53310RGTR 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 TPS53310RGTR reliable?
The price and inventory of TPS53310RGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53310RGTR is usually 5 days.
3.What payment methods are accepted for TPS53310RGTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53310RGTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53310RGTR?
TPS53310RGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53310RGTR 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 TPS53310RGTR?
For technical support, including TPS53310RGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53310RGTR requirements.
6.How does Aetrix verify that TPS53310RGTR is sourced from the original manufacturer or authorized distributors?
All TPS53310RGTR 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 TPS53310RGTR meets industry standards.
7.What is the process for return or replacement of TPS53310RGTR?
All TPS53310RGTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS53310RGTR, 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 TPS53310RGTR part is unused and in its original packaging.
Return procedure for TPS53310RGTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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