Texas Instruments TPS6209733RWKR

Overview

TPS6209733RWKR from Texas Instruments is a 2-A synchronous step-down DC/DC converter with fixed 3.3-V output, iDCS-Control topology, forced PWM or power-save mode operation, and selectable 1.5–2.5-MHz switching frequency in a 2-mm × 2-mm VQFN-11 (RWK) package. It delivers ±1% output voltage accuracy, hiccup short-circuit protection, programmable soft start, and power-good signaling for POL regulation in noise-sensitive industrial systems.

For engineers reviewing the TPS6209733RWKR datasheet, TPS6209733RWKR pinout, TPS6209733RWKR application, or TPS6209733RWKR equivalent, key selection considerations include its 2.5–6.0-V input range, 100% duty-cycle capability for low-dropout operation, integrated output discharge, thermal shutdown, and compatibility with >150-µF ceramic output capacitors.

Technical Context

The TPS6209733RWKR implements iDCS-Control - a predictive on-time architecture enabling seamless transition between PWM and Power Save Mode (PSM) or forced fixed-frequency PWM across the full 0–2-A load range. Its control loop uses input/output voltage feedforward to maintain quasi-constant switching frequency in PWM mode while minimizing light-load quiescent current (57 µA typical).

It integrates dual MOSFETs with 40–96-mΩ high-side and 40–85-mΩ low-side R_DS(on), supports voltage tracking via the SS/TR pin, and features an internal 0.8-V reference with ±1% accuracy over –40°C to 125°C junction temperature. The device enters 100% duty cycle when VIN approaches VOUT and provides hiccup-mode short-circuit protection triggered after 32 current-limit events.

Key Specifications

Pinout & Package

TPS6209733RWKR is housed in a thermally enhanced 2-mm × 2-mm VQFN-11 package (RWK suffix) with exposed thermal pad for efficient heat dissipation in high-power-density layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down converter applications.

Compared with TPS6209733RWKR, TPS6209718RWKR offers identical functionality at 1.8 V but cannot replace it in 3.3-V systems; TPS628513RTER trades current capability and advanced features for smaller footprint and lower standby power-making it unsuitable for 2-A POL use cases.

Availability

TPS6209733RWKR is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, solid state drives, and point-of-load regulation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS6209733RWKR 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 designing analog and embedded processing solutions for industrial, automotive, and communications markets.

The TPS62097 family was developed specifically for high-efficiency, noise-critical POL applications in industrial automation and storage systems-emphasizing seamless mode transition, wide input range, and robust protection features.

FAQ

What is the output voltage of the TPS6209733RWKR?

The TPS6209733RWKR provides a fixed 3.3-V output with ±1% accuracy over temperature and line/load conditions. Unlike adjustable versions, it does not require external feedback resistors-FB is internally connected to AGND for simplified layout and improved thermal performance. This makes the TPS6209733RWKR ideal for systems needing a precise, low-noise 3.3-V rail such as USB PHYs, industrial sensor interfaces, and FPGA I/O banks.

Does the TPS6209733RWKR support forced PWM mode?

Yes, the TPS6209733RWKR supports forced PWM mode via the MODE pin. When the MODE pin is left floating or pulled to AVIN through a resistor (e.g., 75 kΩ for 2.5 MHz), the device operates exclusively in fixed-frequency PWM across the entire 0–2-A load range. This eliminates frequency modulation noise and ensures predictable EMI behavior-essential for noise-sensitive applications like motor encoder interfaces and high-resolution ADC power supplies.

What package type is used for the TPS6209733RWKR?

The TPS6209733RWKR is packaged in a 2-mm × 2-mm VQFN-11 with wettable flanks (RWK suffix). This thermally enhanced package features an exposed thermal pad that must be soldered to a dedicated copper pour for optimal heat dissipation. Its compact footprint supports high-density PCB designs in space-constrained industrial modules, while the VQFN structure enables automated optical inspection and reliable reflow soldering.

How does the TPS6209733RWKR handle short-circuit conditions?

The TPS6209733RWKR employs hiccup short-circuit protection: upon detecting 32 consecutive current-limit events, it disables switching, discharges the output via the internal 165-Ω resistor, and auto-restarts after ~100 µs. This limits average fault current and prevents thermal runaway during sustained shorts-such as those caused by misrouted cables or damaged connectors in motor drive cabinets. The PG pin also goes low during fault, enabling system-level fault logging.

Can the TPS6209733RWKR be used with large output capacitors?

Yes, the TPS6209733RWKR's internal compensation supports output capacitors exceeding 150 µF-enabling use of high-capacitance, low-ESR ceramic arrays for improved transient response and ripple suppression. This capability is especially valuable in SSDs and FPGA-based systems where rapid load steps demand high bulk capacitance without external compensation components. The device maintains stability across this range due to its iDCS-Control architecture and optimized pole-zero placement.