S-8541A16FN-IGBT2G

Overview

The S-8541A16FN-IGBT2G is a CMOS step-down switching regulator controller from the S-8540/8541 Series by ABLIC Inc. It features PWM/PFM switchover control, operating in PWM mode at duty ratios of 29% or higher and PFM mode below 29%. The device integrates a reference phase compensation circuit, PWM control circuit, and current limit circuit. It supports high oscillation frequencies to enable small external components and high efficiency.

Feature Summary

• Integrates built-in PWM/PFM switchover control circuit for optimized efficiency across load ranges
• Features a current limit circuit for protection
• Utilizes high oscillation frequency to minimize external component size
• Provides low-ripple voltage and excellent transient characteristics

Applications

• Main power supply units for portable devices
• High-efficiency large current switching regulators
• Space-constrained electronic designs requiring small 8-Pin MSOP package integration

Procurement Notes

Verify the exact part number suffix against official ABLIC documentation, as variations such as IGBT2G versus IGKT2G may exist in distributor listings. Confirm the specific output voltage setting associated with the '16' designation in the model name through the manufacturer's datasheet before procurement.

Selection Notes

Select this component when designing compact DC-DC converters requiring automatic transition between PWM and PFM modes. It is suitable for applications demanding high efficiency under varying load conditions while utilizing minimal external passive components due to its high-frequency operation capabilities.

Part Context

This part belongs to the S-8540/8541 Series of CMOS step-down switching regulator controllers manufactured by ABLIC Inc. (formerly SII Semiconductor). The series is characterized by high oscillation frequencies and integrated control circuits designed for portable electronics.

Replacement Considerations

The S-8540A16FN-IGBT2G is a related variant within the same family but lacks the PWM/PFM switchover feature, offering only PWM control. Verify functional compatibility if substituting.