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Texas Instruments TPS54336DRCR
- Part No.:
- TPS54336DRCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS54336DRCR.pdf
- Description:
- IC REG BUCK ADJ 3A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,530
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Product details
Overview
TPS54336DRCR from Texas Instruments is a synchronous step-down DC-DC converter IC with integrated 128-mΩ high-side and 84-mΩ low-side MOSFETs, delivering up to 3-A continuous output current from a 4.5-V to 28-V input. It features fixed 340-kHz switching frequency, adjustable soft-start via SS pin, 0.8-V ±0.8% reference voltage, and monotonic startup into pre-biased outputs-used in industrial power supplies and distributed bus regulation.
For engineers reviewing the TPS54336DRCR datasheet, TPS54336DRCR pinout, TPS54336DRCR application, or TPS54336DRCR equivalent, key selection considerations include its VSON-10 package thermal performance (RθJB = 18.9°C/W), hiccup-mode overcurrent protection, BOOT-PH UVLO threshold (2.1 V), and compatibility with ceramic boot capacitors (0.1 µF, X7R/X5R, ≥10 V).
Technical Context
The TPS54336DRCR implements constant-frequency peak current-mode control with internal slope compensation to prevent subharmonic oscillation across duty cycles. Its error amplifier (1300 µmhos transconductance) compares VSENSE to the lower of the 0.8-V reference or SS-pin voltage, enabling precise output regulation and safe pre-biased startup.
It integrates a boot regulator with UVLO monitoring (2.1 V threshold) on the BOOT–PH node, automatically disabling the high-side MOSFET during insufficient gate-drive voltage. Overvoltage transition protection activates when VOUT exceeds 106% nominal, forcing high-side shutdown until recovery below 104%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 28 V - supports wide-input industrial and automotive bus rails without external pre-regulation. |
| Output Current | 3 A continuous - sufficient for powering FPGAs, DSPs, and multi-rail subsystems from single-stage conversion. |
| Switching Frequency | Fixed 340 kHz (±20%) - balances EMI control, inductor size, and efficiency; no external RT resistor required. |
| Voltage Reference | 0.8 V ±0.8% at TJ = 25°C - enables accurate 1.2-V, 1.8-V, 3.3-V, or 5-V outputs using standard 1% resistors. |
| Quiescent Current | 2 µA in shutdown - minimizes battery drain in always-on systems; non-switching IQ = 310 µA typical. |
| Thermal Resistance | RθJB = 18.9°C/W (VSON-10) - enables high-power density layout with direct PCB thermal coupling via exposed pad. |
| Overcurrent Protection | Hiccup mode with 16384-cycle restart delay - limits fault energy and prevents thermal runaway during sustained overload. |
Pinout & Package
TPS54336DRCR uses the 10-pin VSON (DRC) package with 3.0 mm × 3.0 mm body and exposed thermal pad (Pin 11) requiring solder connection to PCB ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 1, 2) | Power input | Dual VIN pins reduce trace resistance and improve high-current path integrity for 3-A operation. |
| PH (Pin 3) | High-side switch source | Connects to inductor; carries full switching current and requires low-inductance layout to minimize ringing. |
| GND (Pins 4, 5) | Power and signal ground | Multiple GND pins provide low-impedance return paths for both power and control circuits. |
| BOOT (Pin 9) | High-side gate drive supply | Requires 0.1-µF X7R/X5R ceramic capacitor to PH; UVLO disables HS-FET if BOOT–PH < 2.1 V. |
| EN (Pin 8) | Enable control | Active-high; 1.21–1.28 V threshold with internal 1.15-µA pullup - allows floating-enable or open-drain interface. |
| COMP (Pin 7) | Error amplifier output | Connects to RC/CC compensation network; sets loop stability and transient response bandwidth. |
| VSENSE (Pin 6) | Feedback input | Inverting input of transconductance amplifier; senses output via resistor divider; 100-nA bias current. |
| SS (Pin 10) | Soft-start/tracking input | Accepts external capacitor (e.g., 100 nF → ~35 ms soft-start); overrides internal reference during startup. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFETs | 128-mΩ high-side + 84-mΩ low-side - eliminates external diode and reduces BOM count while enabling >90% efficiency at 12-V input. |
| Pulse-skipping light-load mode | Disables switching when peak inductor current falls below 0.5 A - reduces quiescent power and extends battery life. |
| Monotonic pre-biased startup | Prevents reverse current flow into powered outputs by blocking both MOSFETs until SS voltage exceeds VSENSE. |
| Overvoltage transition protection | Shuts off high-side MOSFET when VOUT > 106% setpoint - protects downstream logic from overshoot during load dump or fast line transients. |
| Exposed thermal pad (Pin 11) | Direct thermal path to PCB ground plane - achieves RθJB = 18.9°C/W, enabling 3-A operation without heatsink in compact layouts. |
Applications
| Industrial Power Supply | Distributed Bus Regulation |
|---|---|
Use Scenario: Providing regulated 3.3-V/2-A rail for PLC I/O modules operating from 24-V factory bus. IC Role / Device Role / Timing Role: Primary buck regulator with fixed 340-kHz switching and monotonic startup into pre-biased backplane rails. Use Value: Eliminates need for external Schottky diode and reduces solution footprint by 30% vs discrete controller+MOSFET designs. |
Use Scenario: Generating 5-V/3-A supply for Ethernet switches powered from 12-V midplane distribution. IC Role / Device Role / Timing Role: Synchronous step-down converter with hiccup-mode OCP to survive short-circuit events on shared bus segments. Use Value: Maintains stable output under 100% load step with <5% undershoot due to current-mode control and 1300-µmhos error amplifier gain. |
| Smart Meter Power Management | Car Audio DSP Supply |
Use Scenario: Delivering 1.8-V/1.5-A core voltage for metrology SoC in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Low-noise, low-IQ buck regulator with 2-µA shutdown current to meet battery backup runtime requirements. Use Value: Achieves >88% efficiency at 10-mA load via pulse-skipping, extending lithium primary cell life beyond 10 years. |
Use Scenario: Powering 3.3-V/2.5-A digital signal processor in automotive infotainment head units fed from 12-V battery rail. IC Role / Device Role / Timing Role: Automotive-grade buck converter with 160°C thermal shutdown and 4.5–28-V input range accommodating cold-crank transients. Use Value: Survives 40-V load-dump pulses via integrated overvoltage transition protection and robust BOOT-PH UVLO. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54335DRCR | Adjustable 50–1500-kHz frequency (RT pin); internal 2-ms soft-start; no SS pin. | Better suited for EMI-sensitive designs requiring frequency dithering or compact inductors via high-frequency operation. | Select TPS54335DRCR when board space is constrained and switching frequency must be optimized per inductor size. |
| MP2338DJ-LF-Z | 3.5-A rating, 2.5–24-V input, 500-kHz fixed frequency, smaller 2-mm × 2-mm QFN-8 package. | Limited thermal margin (RθJB ≈ 35°C/W); less robust overvoltage protection; no pre-biased startup guarantee. | Choose MP2338DJ-LF-Z only for cost-sensitive, low-power applications where 3-A continuous load is not sustained. |
Compared with TPS54336DRCR, TPS54335DRCR offers design flexibility at the cost of added component count (RT resistor), while MP2338DJ-LF-Z trades thermal reliability and protection features for smaller footprint-making TPS54336DRCR optimal for thermally demanding, safety-critical 3-A industrial rails.
Availability
TPS54336DRCR is available at Aetrix Electronics and suitable for industrial power supplies, distributed bus regulation, smart metering, automotive infotainment, and programmable logic controller (PLC) applications requiring stable component supply and long-term manufacturability.
Supply support for TPS54336DRCR 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-reliability DC-DC conversion.
The TPS5433x product line delivers highly integrated, thermally efficient synchronous buck converters for industrial, automotive, and consumer power systems-designed to simplify design-in while maintaining robust protection and precision regulation.
FAQ
What is the recommended boot capacitor value for TPS54336DRCR?
The TPS54336DRCR requires a 0.1-µF ceramic capacitor between BOOT and PH pins. Texas Instruments specifies X7R or X5R dielectric with ≥10-V rating to ensure stable capacitance across temperature and bias voltage. This value ensures reliable high-side gate drive under full 3-A load and prevents BOOT-PH UVLO triggering during transient conditions.
Does TPS54336DRCR support monotonic startup into a pre-biased output?
Yes, the TPS54336DRCR guarantees monotonic startup into pre-biased outputs by inhibiting both high-side and low-side MOSFET conduction until the SS pin voltage exceeds the VSENSE pin voltage. This prevents reverse current flow and output voltage collapse during hot-plug or system-level power sequencing scenarios.
What is the maximum output voltage achievable with TPS54336DRCR?
The TPS54336DRCR supports output voltages up to 24 V, as specified in its recommended operating conditions. This is enabled by its 28-V absolute maximum VIN rating and internal circuitry designed to maintain regulation and protection functionality across the full 0.8-V to 24-V output range using appropriate feedback resistor selection.
How does the hiccup-mode overcurrent protection work in TPS54336DRCR?
The TPS54336DRCR enters hiccup mode after 16384 switching cycles of sustained overcurrent detection. It then disables switching for 32768 cycles before attempting automatic restart. This limits average fault power dissipation and prevents thermal damage during persistent short-circuit conditions on the output rail.
Can TPS54336DRCR operate with an input voltage below 4.5 V?
No-TPS54336DRCR has a minimum recommended input voltage of 4.5 V and an absolute maximum UVLO rising threshold of 4.5 V. Operation below this level will cause the device to remain disabled. The internal UVLO hysteresis (180 mV) ensures clean turn-on at ≥4.5 V and turn-off at ≤4.32 V to prevent oscillation near the threshold.
TPS54336DRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 25V
- Current - Output:
- 3A
- Frequency - Switching:
- 340kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS54336DRCR FAQ
1.How can I place an order for TPS54336DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54336DRCR 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 TPS54336DRCR reliable?
The price and inventory of TPS54336DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54336DRCR is usually 5 days.
3.What payment methods are accepted for TPS54336DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54336DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54336DRCR?
TPS54336DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54336DRCR 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 TPS54336DRCR?
For technical support, including TPS54336DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54336DRCR requirements.
6.How does Aetrix verify that TPS54336DRCR is sourced from the original manufacturer or authorized distributors?
All TPS54336DRCR 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 TPS54336DRCR meets industry standards.
7.What is the process for return or replacement of TPS54336DRCR?
All TPS54336DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54336DRCR, 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 TPS54336DRCR part is unused and in its original packaging.
Return procedure for TPS54336DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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