Global NX

The L4974A is a monolithic step-down (buck) switching regulator IC from STMicroelectronics, designed to deliver high efficiency and precise voltage regulation in power supply applications. With its integrated high-current capability and wide input range, it provides a reliable solution for both industrial and consumer-grade power systems.

Packaged in a 15-lead Multiwatt package, the L4974A includes a high-current internal power switch, oscillator, error amplifier, and comprehensive protection features in a single IC. It can deliver up to 4A of output current with excellent line and load regulation. The device also features programmable switching frequency, soft-start capability, thermal shutdown, and current limiting, ensuring robust and safe operation.

Key Features:

Type: Monolithic step-down switching regulator (buck converter)

 

• Output Current: Up to 4A continuous

• Input Voltage Range: Wide range (up to 50V)

• Efficiency: High efficiency with integrated power transistor

• Oscillator: Programmable switching frequency

• Soft-Start: Built-in soft-start for controlled startup

• Protection: Overcurrent limiting and thermal shutdown

• Package: 15-lead Multiwatt (through-hole) for easy mounting

• Temperature Range: –40°C to +125°C (industrial grade)

Applications:

• Industrial power supplies

• Consumer electronics

• Automotive and motor control systems

• Embedded system power management

• Battery charging and regulated DC supplies

• Communication equipment

Why Choose L4974A from Global Nx?
Global Nx offers 100% genuine STMicroelectronics L4974A ICs, ensuring reliability, performance, and long service life. With our lowest minimum order quantity (MOQ), competitive pricing, and fast Pan India delivery, we make it simple for manufacturers and engineers to source quality power management ICs.