Texas Instruments TPS62177DQCT Synchronous Buck Step-Down Converter, 3.3V 0.5A,

The Texas Instruments TPS62177DQCT is a high-efficiency synchronous step-down DC/DC converter, built on the advanced DCS-Control™ topology. It is engineered to deliver reliable and stable power conversion for a wide array of electronic systems. With an extensive operating input voltage range of 4.75V to 28V, this regulator is perfectly suited for applications powered by multi-cell Li-ion batteries, as well as 12V and higher intermediate supply rails, providing a robust 500mA output current at a fixed 3.3V.

A key advantage of this device is its exceptional power efficiency across the entire load spectrum. It automatically enters a power save mode at light loads to maximise battery life and maintain high performance. Furthermore, it features a dedicated sleep mode to support applications with advanced power-saving requirements, such as ultra-low-power microcontrollers. The typical quiescent current is remarkably low at 22µA in normal mode and just 4.8µA in sleep mode, where efficiency at very low loads can be increased by up to 20%.

The integrated power good output signal is invaluable for system design, enabling precise power sequencing and acting as a power-on reset. For complete system safety and reliability, the converter includes comprehensive protection features: under-voltage lockout, short-circuit protection, and over-temperature protection. It also supports 100% duty cycle mode for lowest dropout operation and features active output discharge when in shutdown mode, where the shutdown current is less than 2µA.

Housed in a compact WSON-10 surface-mount package, this green product (containing no antimony or bromine) is designed for modern, space-constrained PCB layouts. Its high 1MHz switching frequency allows for the use of smaller external inductors and capacitors, simplifying board design and reducing the overall solution footprint.

**Important Handling