S-8520F15MC-BNAT2U

Overview

The S-8520F15MC-BNAT2U is a CMOS step-down switching regulator controller from the S-8520 series, manufactured by ABLIC Inc. It operates with PWM control and supports an input voltage range of 2.5 V to 16 V. The device provides a fixed output voltage of 1.5 V and features a switching frequency of 300 kHz. It includes internal components such as a reference voltage source, oscillation circuit, and error amplifier. The unit is housed in an SOT-23 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates essential control components including a reference voltage source, oscillation circuit, and error amplifier for stable operation.
• Utilizes Pulse Width Modulation (PWM) control topology for efficient DC-DC conversion.
• Designed with CMOS process technology to support low quiescent current consumption.

Applications

• Battery-powered portable electronic devices requiring efficient step-down regulation.
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries.
• General-purpose power management circuits in consumer electronics.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific environmental declarations such as REACH or halogen-free certifications. Ensure the ordering suffix matches the required package and tape/reel specifications. Validate that the part number corresponds to the exact voltage and package variant needed for the design.

Selection Notes

Select this controller when a fixed 1.5 V output is required from a 2.5 V to 16 V input source. The SOT-23-5 package suits space-constrained designs. Consider external MOSFET selection based on the 300 kHz switching frequency and drive requirements. Evaluate thermal performance for the target application environment within the specified operating temperature range.

Part Context

This component belongs to the S-8520/8521 series of CMOS step-down switching regulator controllers. The S-8520 series specifically employs PWM control, distinguishing it from the S-8521 series which offers switchable PWM/PFM modes. These controllers are designed for applications demanding high efficiency and low power consumption in compact form factors.

Replacement Considerations

Check for updated revisions within the S-8520 series offering identical electrical characteristics. Verify pin compatibility if substituting with other manufacturers' buck controllers. Ensure the replacement supports the same input voltage range and output configuration.