S-8520F36MC-BNVT2U

Overview

The S-8520F36MC-BNVT2U is a CMOS step-down switching regulator controller from the S-8520 series by ABLIC Inc. It operates with a fixed PWM control mode and features an input voltage range of 2.5 V to 16 V. The device integrates a reference voltage source, oscillation circuit, and error amplifier within a compact SOT-23-5 package. Designed for efficiency, it maintains a low quiescent current of 100 uA. The component supports a switching frequency of 300 kHz and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates essential internal components including a reference voltage source, oscillation circuit, and error amplifier for standalone controller operation.
• Utilizes a fixed Pulse Width Modulation (PWM) control scheme to regulate output voltage efficiently.
• Designed for ultra-low power consumption with a specified quiescent current of 100 uA.

Applications

• Battery-powered portable electronic devices requiring efficient step-down conversion
• Embedded systems utilizing microcontrollers needing stable regulated power supplies
• Industrial equipment with wide input voltage requirements

Procurement Notes

Verify the specific suffix BNVT2U against official ABLIC documentation to confirm pinout compatibility and marking codes. Confirm availability status as distribution channels may list obsolete or limited stock items. Ensure the ordering quantity meets manufacturer reel specifications if applicable. Cross-reference the datasheet revision date to validate electrical characteristics against current production standards.

Selection Notes

Select this component when a dedicated PWM-controlled buck converter solution is required rather than a complete integrated regulator. The S-8520F series is suitable for designs where external power switches are preferred for higher current handling or specific thermal management needs. Compare the 300 kHz switching frequency against system noise constraints and inductor size requirements. Verify that the 16 V maximum input voltage aligns with the source supply rails.

Part Context

This part belongs to the S-8520 series, which comprises CMOS step-down switching regulator controllers. Unlike the S-8521 series which offers switchable PWM/PFM modes, the S-8520F variant is strictly PWM controlled. The series is characterized by its integration of core control logic into a small footprint, allowing designers to implement custom DC-DC converters using minimal external components.

Replacement Considerations

Direct replacements include other S-8520F variants with different output voltage settings, such as S-8520F45MC-BOET2U. Ensure any substitute matches the SOT-23-5 package and 300 kHz switching frequency. Verify that the replacement part maintains the same 100 uA quiescent current specification for equivalent standby performance.