Lumissil Microsystems has introduced the IS31PM3420A, a fully integrated, high-frequency synchronous step-down DC-DC converter designed to deliver exceptional performance in compact electronic devices. This advanced regulator supports a load current of up to 3 A and operates within a wide input voltage range from 3.8 V to 36 V, offering outstanding efficiency, precise output accuracy, and minimal drop-out voltage in a small form factor.
The IS31PM3420A features a constant on-time control mode, enabling fast transient response and simple control-loop compensation. With Force Continuous Conduction Mode (FCCM) at light loads, it significantly reduces output voltage ripple, ensuring stability and reliability. The device achieves an impressive 91% efficiency at full load (5V/3A), making it suitable for power-sensitive applications.
Designed with robust protection mechanisms, the IS31PM3420A includes thermal shutdown, cycle-by-cycle current limiting, output short-circuit protection with hiccup mode, overvoltage protection, and undervoltage lockout (UVLO). Its SOP-8-EP package with an exposed pad enhances thermal dissipation, ensuring high performance even in demanding conditions.
Key features of IS31PM3420A include:
- Input voltage range: 3.8V to 36V
- Output current: Up to 3A
- Adjustable output voltage: 1V to 24V
- Fixed frequency operation: 400kHz
- Power good flag output
- Low shutdown current (1µA typical)
- Spread spectrum for EMI minimization
- Internal loop compensation and soft-start
- RoHS & Halogen-Free compliance
Application of IS31PM3420A:
- General-purpose power supply
Click here to learn more about IS31PM3420A.
