TPS5430DDAR power chips

The **Texas Instruments TPS5430DDAR** is a high-efficiency, monolithic step-down (buck) DC-DC converter with integrated high-side N-channel MOSFET, delivering up to 3 A continuous output current. Designed for wide-input-voltage applications, it accepts 5.5 V to 36 V input and provides adjustable output from 1.221 V up to VIN – dropout, making it ideal for 12 V, 24 V, and industrial/bus-powered systems.

**Key Specifications:**
– Brand: Texas Instruments
– Part Number: TPS5430DDAR
– Topology: Non-synchronous buck (step-down)
– Input Voltage Range: 5.5 V to 36 V
– Output Voltage Range: 1.221 V to 32.04 V (adjustable via external divider)
– Output Current: up to 3 A continuous
– Integrated Switch: High-side N-MOSFET (low RDS(on))
– Switching Frequency: Fixed 500 kHz
– Quiescent Current (Iq): 4.4 mA (typ.)
– Efficiency: High (internal compensation minimizes external components)
– Protection Features: Current-limit, thermal shutdown, overvoltage protection
– Package: SOIC-8 with Exposed Pad (SO PowerPAD™ / SOIC-8-EP)
– Packaging: Tape & Reel
– Operating Junction Temperature: –40 °C to +125 °C (TJ)

**Typical Applications:**
– Industrial and test & measurement equipment
– Automotive aftermarket and infotainment systems
– Distributed power systems (12 V / 24 V rails)
– Point-of-load regulation for FPGAs, DSPs, ASICs
– Battery-powered and wide-input DC-DC conversion
– Consumer electronics and set-top boxes requiring robust 3 A step-down

The TPS5430 offers excellent line/load regulation, simple external compensation, and robust protection in a compact, thermally enhanced SOIC-8 footprint — a proven, cost-effective, and widely used solution for demanding 3 A buck converter designs across industrial, automotive, and consumer markets.