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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsTPS54335ADRCR
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TPS54335ADRCR - Texas Instruments

Manufacturer Part Number
TPS54335ADRCR
Manufacturer
Texas Instruments
Allelco Part Number
32D-TPS54335ADRCR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
44,361 pcs available, New & Original
Parts Description
IC REG BUCK ADJUSTABLE 3A 10VSON
Package
10-VSON (3x3)
Data sheet
TPS54335ADRCR.pdf
RoHs Status
ROHS3 Compliant
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Specifications

TPS54335ADRCR Tech Specifications
Texas Instruments - TPS54335ADRCR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TPS54335ADRCR

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Output (Min/Fixed) 0.8V
Voltage - Output (Max) 24V
Voltage - Input (Min) 4.5V
Voltage - Input (Max) 28V
Topology Buck
Synchronous Rectifier Yes
Supplier Device Package 10-VSON (3x3)
Series -
Package / Case 10-VFDFN Exposed Pad
Product Attribute Attribute Value
Package Tape & Reel (TR)
Output Type Adjustable
Output Configuration Positive
Operating Temperature -40°C ~ 150°C (TJ)
Number of Outputs 1
Mounting Type Surface Mount
Function Step-Down
Frequency - Switching 50kHz ~ 1.5MHz
Current - Output 3A
Base Product Number TPS54335

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

TPS54335ADRCR Image
TPS54335ADRCR (1)

Manufacturer Part Number

TPS54335ADRCR

Manufacturer

Texas Instruments

TPS54335ADRCR Image
TPS54335ADRCR (2)

Introduction

The TPS54335ADRCR is a high-performance, synchronous step-down DC-DC converter integrated circuit (IC) from Texas Instruments.

Product Features and Performance

Supports output voltage from 0.8V to 24V

Capable of delivering up to 3A of output current

Adjustable switching frequency from 50kHz to 1.5MHz

Synchronous rectification for high efficiency

Operates over a wide input voltage range of 4.5V to 28V

TPS54335ADRCR Image
TPS54335ADRCR (3)

Product Advantages

High efficiency and power density

Compact 10-VSON package with exposed thermal pad

Flexible implementation with adjustable output voltage and switching frequency

Robust thermal management and overcurrent protection

Key Technical Parameters

Output Voltage: 0.8V to 24V

Output Current: Up to 3A

Switching Frequency: 50kHz to 1.5MHz

Input Voltage: 4.5V to 28V

Operating Temperature: -40°C to 150°C

TPS54335ADRCR Image
TPS54335ADRCR (4)

Quality and Safety Features

ROHS3 compliant

Thermal shutdown and overcurrent protection

Compatibility

Surface mount package, suitable for a variety of PCB designs

TPS54335ADRCR Image
TPS54335ADRCR (5)

Application Areas

Suitable for a wide range of applications, including industrial, automotive, and consumer electronics

Product Lifecycle

This product is currently in active production and not nearing discontinuation.

Replacement or upgraded models may become available in the future.

Key Reasons to Choose This Product

High-performance and efficient step-down DC-DC conversion

Flexible configuration options for customized power solutions

Robust thermal and overcurrent protection for reliable operation

Compact package size and surface mount design for space-constrained applications

Proven reliability and quality from a trusted manufacturer, Texas Instruments

Frequently Asked Questions(FAQ)

How does the TPS54335ADRCR handle transient load steps while maintaining output voltage stability, and what design considerations are critical for achieving less than 200mV deviation during a 3A to 0A transition?
The TPS54335ADRCR achieves transient response through its internal compensation network and high-bandwidth error amplifier, enabling fast regulation feedback. For a 3A load step, maintaining sub-200mV deviation requires careful selection of output capacitance with low ESR (e.g., ceramic capacitors in parallel with polymer types) and appropriate inductance value to limit di/dt. The inductor must support the peak current without saturating, typically chosen at 30–40% above the maximum load current. Additionally, PCB layout plays a crucial role—short traces between VIN, SW, and GND planes reduce parasitic inductance, minimizing voltage spikes and improving settling time.
What is the efficiency comparison between synchronous and asynchronous buck operation in the TPS54335ADRCR when stepping down from 12V to 3.3V at 2.5A, and how does this affect thermal performance in compact designs?
At 12V input to 3.3V output delivering 2.5A, the TPS54335ADRCR operates in synchronous rectification mode, achieving efficiencies above 92% due to the lower forward voltage drop of the integrated MOSFETs compared to external Schottky diodes. This results in approximately 2W power dissipation versus nearly 3.5W in an equivalent asynchronous design. In space-constrained applications, this efficiency advantage translates to significantly reduced junction temperature rise—typically 15–20°C lower—allowing operation without heatsinks even in 3x3mm packages under continuous loads.
When selecting the feedback resistor divider for the TPS54335ADRCR to set 5V output, how should the values be chosen to minimize quiescent current while ensuring accurate regulation across temperature?
To achieve a 5V output, the feedback resistors R1 and R2 are calculated using R2 = 0.8V × R1 / (5V − 0.8V). A common choice is R1 = 10kΩ and R2 = 17.5kΩ, but precision metal-film resistors (e.g., ±1%, 10ppm/°C) should be used to maintain accuracy over −40°C to 150°C. Higher resistor values reduce quiescent current draw (<5µA typical), improving light-load efficiency, but increase noise susceptibility. For most applications, total divider resistance below 200kΩ ensures stable operation without excessive loading on the FB pin.
What are the key differences between the TPS54335ADRCR and the RT8299AZQW in terms of switching frequency flexibility and external component count, particularly for applications requiring tight layout constraints?
The TPS54335ADRCR offers a broader adjustable switching frequency range of 50kHz to 1.5MHz, providing greater flexibility in optimizing efficiency and board size. In contrast, the RT8299AZQW has a fixed or narrower range, limiting component selection. Both require similar external parts (inductor, input/output caps, feedback resistors), but the TPS54335’s wider frequency window allows use of smaller magnetics at higher frequencies, beneficial in compact layouts. However, the RT8299 may offer better EMI characteristics at certain frequencies due to proprietary modulation techniques not present in the TI design.
How does the TPS54335ADRCR protect against reverse polarity input conditions, and what additional components might be needed if the system cannot tolerate negative voltages on VIN?
The TPS54335ADRCR lacks built-in reverse polarity protection; it will conduct if a negative voltage appears at VIN, potentially damaging internal circuitry. To prevent this, a series P-channel MOSFET with gate tied to ground via a resistor can be added, acting as a pass element that turns off when VIN drops below zero. Alternatively, a Schottky diode in series introduces only 0.3–0.5V dropout but increases conduction loss. For systems where minimal voltage loss is acceptable and simplicity preferred, the diode solution is common; otherwise, active MOSFET-based methods preserve efficiency.
What is the recommended minimum input capacitance for the TPS54335ADRCR when operating near its maximum input voltage (28V), and how does capacitor selection impact inrush current and EMI performance?
At 28V input, a minimum of two 10µF X7R/X5R ceramic capacitors rated for at least 35V should be placed close to the VIN pin, with total effective capacitance exceeding 20µF including bulk capacitance. These must have low ESL and ESR to suppress high-frequency ripple and prevent voltage droop during startup. High-capacitance electrolytic or polymer capacitors add bulk energy storage but increase inrush current; thus, soft-start control must be considered. Proper placement reduces loop inductance, minimizing ringing and electromagnetic interference in the MHz range.
Can the TPS54335ADRCR operate reliably in automotive environments, and what precautions are necessary given its industrial temperature rating overlaps with AEC-Q100 requirements?
While the TPS54335ADRCR is rated for −40°C to 150°C junction temperature, confirming AEC-Q100 qualification is essential for automotive use. Texas Instruments does not market this part as AEC-Q100 compliant, so it should not be used in safety-critical automotive systems without additional validation. For non-safety applications (e.g., infotainment), careful thermal derating, conformal coating, and layout robustness help ensure reliability. Power cycling tests under temperature extremes are recommended to assess long-term stability beyond datasheet specifications.
How does the TPS54335ADRCR manage startup sequencing when multiple rails share the same input, and what role does the SS/TR pin play in preventing cross-interference?
The SS/TR pin enables adjustable soft-start timing by integrating an internal capacitor charged through a current source. When pulled low, the device holds off startup until the pin exceeds 0.8V. This allows coordination with other regulators on the same supply by delaying the TPS54335’s turn-on relative to others, reducing peak inrush current. If multiple devices share VIN, each should have independent SS pins controlled via RC networks or dedicated sequencing ICs. Without proper sequencing, simultaneous startup can cause input voltage sag, triggering undervoltage lockout or tripping upstream protections.
What are the trade-offs between using the TPS54335ADRCR in forced continuous conduction mode (FCCM) versus discontinuous conduction mode (DCM), especially regarding efficiency at light loads and output ripple?
The TPS54335ADRCR defaults to DCM at light loads for higher efficiency, but enabling FCCM via the MODE pin maintains constant frequency, reducing audible noise and improving transient response. However, FCCM increases conduction losses due to overlapping inductor current and switch activity, lowering peak efficiency by 5–10% at 100mA loads. Output ripple also rises slightly in FCCM because the inductor current ramps down more slowly. For battery-powered devices sensitive to noise or requiring predictable startup behavior, FCCM may be preferable despite modest efficiency penalty.
How does the TPS54335ADRCR’s internal current limit interact with external overcurrent protection schemes, and when would a fuse or polyfuse be necessary despite built-in protection?
The TPS54335ADRCR features cycle-by-cycle current limiting with typical threshold around 3.5A, which protects against short circuits and sustained overloads. However, this protection responds after fault conditions occur and may not prevent damage from extreme transients or repeated short events. In harsh environments (e.g., industrial motor drives), adding a polyfuse provides cumulative trip protection, disconnecting the load if overcurrent persists beyond thermal thresholds. Fuses are also useful when replacing the regulator in legacy systems designed for higher fault tolerance.
What is the impact of PCB copper weight and trace geometry on the thermal performance of the TPS54335ADRCR, and how can heat spreading improve junction temperature under 3A continuous load?
With 3A output, the TPS54335ADRCR generates approximately 1.5W of power dissipation (based on RDS(on) and duty cycle). Adequate copper area beneath the exposed pad—especially on inner layers connected to GND—acts as a heat spreader. Using 2oz or heavier copper with thermal vias (plated through-holes every 0.5mm) transfers heat efficiently to adjacent layers. A solid ground plane under the package reduces hotspot concentration, lowering TJ by up to 30°C compared to minimal copper. Without sufficient thermal relief, localized heating may exceed solder reflow limits during assembly.
How do substitutes like the RT8299AZQW compare to the TPS54335ADRCR in terms of bill-of-materials (BOM) cost and availability, particularly in high-volume production scenarios?
The RT8299AZQW often offers lower unit pricing due to regional sourcing advantages and simpler architecture, but may require larger inductors or higher-value capacitors to match performance, partially offsetting savings. Lead times for the TPS54335ADRCR are generally consistent across major distributors, whereas Asian alternatives can experience longer delays. For high-volume designs, dual sourcing with both TI and Renesas parts mitigates risk, though firmware changes may be needed due to differences in startup timing and protection thresholds. Total landed cost analysis should include test and validation overhead for alternative selections.
What precautions should be taken when routing the SW node of the TPS54335ADRCR to avoid electromagnetic interference (EMI) and ensure reliable operation near the 1.5MHz upper frequency limit?
The SW node carries high dv/dt and di/dt transitions, making it prone to radiated emissions. Minimize loop area between input capacitor, SW pin, and inductor; keep traces short and wide. Use ground stitching vias near the SW node to provide return paths, avoiding splits in the GND plane. Adding a small snubber network (e.g., 10Ω + 1nF) across the inductor terminals can dampen ringing without significant loss. Shielded inductors or common-mode chokes may further reduce conducted emissions in sensitive RF coexistence environments.
Is it possible to parallel two TPS54335ADRCR units to share current in a high-reliability system, and what challenges arise from mismatched regulation or dead-time interaction?
Direct paralleling without external balancing circuits is not recommended due to inherent variations in threshold voltages and feedback loops causing unequal current sharing. Mismatches as small as 50mV can result in one regulator carrying 60–70% of total current. Solutions include using dedicated multiphase controllers or adding small ballast resistors in series with each output, though this reduces efficiency. Alternatively, master-slave configurations with synchronized clocking can improve distribution, but require precise timing alignment and complicate layout. Most designs opt for single-device redundancy instead.
How does the TPS54335ADRCR respond to sudden removal of output load, and what measures prevent excessive overshoot or oscillation in capacitive loads exceeding 100µF?
Under no-load conditions, the TPS54335ADRCR exhibits moderate output overshoot due to lack of damping from load current. Exceeding 100µF capacitance can destabilize the feedback loop unless compensated properly. Adding a small series resistor (1–10Ω) in series with the output capacitor breaks the LC resonance formed by inductance and capacitance, suppressing ringing. Alternatively, increasing the soft-start time allows slower ramp-up, reducing peak current demand and voltage stress. Always verify stability with actual load transients using an oscilloscope rather than relying solely on datasheet graphs.
What are the implications of operating the TPS54335ADRCR near its minimum input voltage (4.5V) with high duty cycles, and how does efficiency degrade as Vin approaches Vout?
Near 4.5V input with outputs close to 4V, the TPS54335ADRCR operates at very high duty cycles (>90%), increasing conduction time and associated losses. Efficiency drops significantly—often below 80%—due to prolonged MOSFET ON-time and increased switching losses from slower transitions. Additionally, the minimum on-time limit (~30ns) constrains achievable output voltages, potentially causing dropout. In such cases, consider using LDO post-regulation or selecting a different topology altogether. For 12V-to-5V applications, the device performs well, but 5V-to-4.8V scenarios push operational boundaries.
How does the TPS54335ADRCR’s Moisture Sensitivity Level (MSL) of 2 influence assembly process planning, and what steps are required to ensure compliance with IPC standards during reflow soldering?
With MSL 2 classification, the TPS54335ADRCR must be assembled within one year of opening the moisture-barrier bag and exposed to ambient conditions for less than eight hours before reflow. Process engineers should monitor bake-out procedures if shelf life exceeds thresholds, using desiccant packs and humidity indicators in storage. Reflow profiles must adhere to JEDEC J-STD-020, peaking at 245°C for 30 seconds max, to avoid delamination. Failure to follow these guidelines risks popcorning during reflow, especially in humid environments, compromising solder joint integrity.
What diagnostic features does the TPS54335ADRCR provide for system monitoring, and how can the EN pin be utilized for intelligent power management beyond basic enable/disable functions?
Beyond standard enable functionality, the EN pin supports logic-level control for sequencing and fault detection. By connecting it to a microcontroller GPIO, users can implement soft shutdown, power-good signaling via external comparators, or brownout detection. Monitoring EN state during boot can confirm regulator health, while pulsing EN during idle modes enables dynamic voltage scaling. Although no dedicated PG pin exists, an external supervisor can infer status from EN and FB readings, enabling predictive maintenance in embedded systems where continuous rail presence is critical.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TPS54335ADRCR

Product Attribute TPS54335-2ADRCR TPS54335-1ADRCR TPS54335ADRCT TPS54335DRCR
Part Number TPS54335-2ADRCR TPS54335-1ADRCR TPS54335ADRCT TPS54335DRCR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Topology - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Function - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Series - - - -
Voltage - Input (Min) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Synchronous Rectifier - - - -
Current - Output - - - -
Output Configuration - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Frequency - Switching - - - -
Number of Outputs - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Output (Max) - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Output (Min/Fixed) - - - -
Voltage - Input (Max) - - - -

TPS54335ADRCR Datasheet PDF

Download TPS54335ADRCR pdf datasheets and Texas Instruments documentation for TPS54335ADRCR - Texas Instruments.

PCN Assembly/Origin
Mult Dev Assembly Mat Chg 26/Apr/2019.pdf
HTML Datasheet
TPS54335A, TPS54336A Datasheet.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

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TPS54335ADRCR Image

TPS54335ADRCR

Texas Instruments
32D-TPS54335ADRCR

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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