TPS54315PWP

The Texas Instruments TPS54315PWP is a high-performance synchronous buck PWM converter from the SWIFT™ family. It integrates all active components required for a DC-DC step-down application, simplifying design and reducing board space. This device supports an input voltage range of 3V to 6V and delivers a continuous output current of up to 3A.

Key electrical specifications include a fixed 2.5V output voltage, a typical quiescent current of 6.2µA, and a maximum duty cycle of 90%. The converter features integrated MOSFET switches with a low on-resistance of 60mℤ, contributing to high efficiency. It operates with a wide PWM frequency range, adjustable from 280 kHz to 700 kHz, with fixed options at 350 kHz and 550 kHz. The undervoltage lockout circuit prevents start-up until the input voltage reaches 3V.

Designed for ease of use, the TPS54315PWP includes features such as Enable and Power Good outputs, which are useful for system sequencing and fault signaling. It is internally compensated for a low parts count and offers fast transient response. The device is protected by peak current limit and thermal shutdown for reliability.

This component is available in a 20-HTSSOP package, suitable for surface mount applications. Its integrated solution reduces board area and total cost, making it an attractive choice for various power management designs.