S-8520C29MC-BROT2G

Overview

The S-8520C29MC-BROT2G is a CMOS step-down switching regulator controller from the S-8520 series, manufactured by ABLIC Inc. It employs Pulse Width Modulation (PWM) control to maintain stable output voltages. The device operates within an input voltage range of 2.5 V to 16 V and supports a maximum switching frequency of 375 kHz. Designed for surface-mount applications, it utilizes a compact SOT-23-5 package. The component functions as a positive output buck DC-DC switching controller with a single output channel.

Feature Summary

• Integrates PWM control circuitry capable of linear duty ratio variation from 0% to 100% for low-ripple power delivery.
• Includes an internal error amplifier and soft-start circuit to prevent output overshoot during startup.
• Features a reference voltage source and oscillation circuit for precise regulation without external timing components.

Applications

• Portable electronic devices requiring efficient step-down power conversion
• Battery-powered systems needing stable voltage regulation under varying loads
• Embedded circuits utilizing external Pch MOSFETs or PNPs for current handling

Procurement Notes

Verify the specific suffix 'BROT2G' against official ABLIC documentation to confirm package type and tape/reel specifications. Ensure compatibility with required input voltage ranges and switching frequencies for your design. Confirm RoHS compliance status and check for any recent product lifecycle notices regarding obsolescence or design-in restrictions before finalizing procurement plans.

Selection Notes

Select this controller when a dedicated PWM-based buck solution is required rather than integrated synchronous regulators. It is suitable for designs where external power switches are preferred for higher current capabilities or thermal management. Consider the need for external inductors, capacitors, and diodes, as this IC controls only the switching logic and does not include internal power stages.

Part Context

This component belongs to the S-8520/8521 Series of CMOS step-down switching regulator controllers. The S-8520 series specifically focuses on PWM control for high-efficiency operation across wide load ranges. It is part of ABLIC's portfolio of professional power management ICs designed for portable electronics and industrial applications requiring reliable DC-DC conversion.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data. Designers should consult official ABLIC resources for direct replacements or cross-reference compatible PWM buck controllers with similar input voltage ranges and package footprints if sourcing issues arise.