TPS54383PWPR

The Texas Instruments TPS54383PWPR is a versatile dual-output, non-synchronous buck converter designed for applications requiring up to 3A of output current per channel. It operates efficiently within an input voltage range of 4.5V to 28V, making it suitable for a wide array of power management needs.

Key electrical features include a fixed switching frequency of 300kHz, current mode control for stable operation, and an integrated high-side MOSFET with a low resistance of 85 mΩ. The device offers an adjustable output voltage starting from 0.8V up to 90% of the input voltage. It also incorporates essential protection features such as pulse-by-pulse overcurrent protection and thermal shutdown at +148°C.

Packaged in a compact 14-pin HTSSOP (PowerPAD™), the TPS54383PWPR is designed for surface mounting. Its dual PWM outputs operate 180° out-of-phase, and it supports both ratiometric and sequential startup modes, selectable via a single pin. This makes it a robust choice for various power supply designs where space and performance are critical.

Additional features include a 0.8V 1.5% voltage reference and a 2.1ms internal soft-start time, contributing to smooth power-up sequences. The selectable levels of overcurrent protection on Output 2 provide design flexibility.