S-8520F40MC-BNZT2U

Overview

The S-8520F40MC-BNZT2U is a CMOS step-down switching regulator controller from the S-8520 series manufactured by ABLIC Inc. It operates with a fixed PWM control mode and supports an input voltage range of 2.5 V to 16 V. The device provides a fixed output voltage of 4.0 V and features a typical quiescent current of 100 uA. It functions within a temperature range of -40°C to +85°C and is housed in a compact SOT-23-5 package.

Feature Summary

• Fixed PWM control topology for stable step-down regulation
• Integrated reference voltage source and error amplifier
• Low quiescent current consumption for efficiency

Applications

• Battery-powered portable electronics
• General-purpose DC-DC conversion circuits
• Embedded systems requiring regulated power rails

Procurement Notes

Verify the exact suffix BNZT2U against official ABLIC documentation, as distributor listings may contain typos or generic placeholders. Confirm RoHS compliance status and lead times directly with the manufacturer or authorized agents, as availability varies by region. Ensure the component matches the specific pinout and marking requirements for your PCB design.

Selection Notes

Select this controller when a fixed 4.0 V output is required from a 2.5 V to 16 V input source without external feedback resistor adjustment. It is suitable for designs prioritizing simplicity over adjustable voltage ranges. Ensure external components such as inductors and capacitors are rated for the expected load current and switching frequency to maintain stability.

Part Context

This component belongs to the S-8520 series of CMOS step-down switching regulator controllers. The series is characterized by its integration of essential control functions into a small footprint, making it ideal for space-constrained applications. It complements other PMIC offerings from ABLIC focused on efficient power management.

Replacement Considerations

Check for direct cross-references within the S-8520 family with different output voltages or suffixes. Verify compatibility with existing external passive components before substitution.