Texas Instruments TPS54334DDA DC-DC Buck Step Down Regulator, Adjustable, 3A, 4

The Texas Instruments TPS54334DDA is a high-performance, synchronous monolithic buck (step-down) DC-DC converter, designed for efficiency and compactness in modern power management applications. By integrating the MOSFETs and utilising fixed-frequency current mode control, this regulator significantly reduces the external component count, enabling smaller and more streamlined designs. It delivers an adjustable output from 800mV to 24V from a wide 4.2V to 28V input, with a robust 3A continuous output current capability.

Key Features & Benefits

• High Integration & Small Size: The integrated 128/84mΩ MOSFETs and minimal external part requirements make it ideal for space-constrained applications.
• High Efficiency Operation: Efficiency is maximised through the low-resistance MOSFETs, a low quiescent current, and a pulse-skipping mode that boosts performance during light load conditions.
• Comprehensive Protection Suite: The device features cycle-by-cycle current limiting, enhanced with low-side sourcing and sinking current limits to prevent current runaway. For sustained faults, hiccup mode protection is triggered. It also includes thermal shutdown and overvoltage transient protection for robust operation.
• Accurate & Reliable Regulation: Provides accurate 1.5% voltage reference accuracy over temperature, ensuring stable power delivery. It supports monotonic start-up into pre-biased outputs.
• Power-Saving Mode: An enable pin allows the device to enter a shutdown mode, reducing supply current to just 2µA.
• Power Good Indicator: Includes a power good function for system sequencing and monitoring.
• Environmentally Conscious: This is a green product, manufactured without antimony or bromine (no Sb/Br).

Specifications at a Glance

• Input Voltage Range: 4.2V to 28V DC
• Output Voltage Range: 800mV to 24V DC (User-