TPS54331DR POWER CHIPS

The **Texas Instruments TPS54331DR** is a high-efficiency, non-synchronous step-down (buck) DC-DC converter with integrated low RDS(on) high-side N-channel MOSFET, delivering up to 3 A continuous output current. It features a wide 3.5 V to 28 V input voltage range and TI’s Eco-mode™ pulse skipping control, which automatically improves light-load efficiency while maintaining excellent regulation.

**Key Specifications:**
– Brand: Texas Instruments
– Part Number: TPS54331DR
– Topology: Non-synchronous buck (step-down)
– Input Voltage Range: 3.5 V to 28 V
– Output Voltage Range: 0.8 V to 25 V (adjustable via external divider)
– Output Current: up to 3 A continuous
– Integrated Switch: Built-in high-side N-MOSFET (low RDS(on))
– Switching Frequency: Fixed 570 kHz
– Quiescent Current (Iq): 110 µA (typ.)
– Shutdown Current: 1 µA (typ.)
– Control Mode: Current-mode with internal slope compensation
– Light-Load Efficiency: Eco-mode™ pulse skipping for improved efficiency at low loads
– Output Capacitor Compatibility: Supports ceramic capacitors
– Protection Features: Current limit, thermal shutdown, overvoltage protection
– Package: SOIC-8
– Packaging: Tape & Reel
– Operating Junction Temperature: –40 °C to +150 °C (TJ)

**Typical Applications:**
– 12 V / 24 V industrial and automotive power supplies
– Distributed point-of-load regulation
– Battery-powered equipment and portable devices
– Consumer electronics, set-top boxes, routers, and monitors
– Test & measurement instrumentation
– General-purpose wide-input buck conversion requiring low Iq and high light-load efficiency

The TPS54331DR combines wide VIN range, high current capability, very low shutdown current, simplified external compensation, and Eco-mode™ efficiency enhancement in a compact, thermally capable SOIC-8 package — making it an excellent, cost-effective, and widely adopted 3 A buck regulator for industrial, automotive, battery, and consumer applications.