S-8521E30MC-BLPT2G

Overview

The S-8521E30MC-BLPT2G is a CMOS step-down switching regulator controller from ABLIC, operating in the S-8521 series. It features PWM/PFM switching control and supports an input voltage range of 2.5 V to 10 V with a fixed output voltage of 3.0 V. The device utilizes a SOT-23-5 package for surface mount installation and operates within a temperature range of -40 °C to +85 °C.

Feature Summary

• Integrates PWM/PFM switching control for high efficiency across varying load conditions
• Includes internal reference voltage source, oscillation circuit, and error amplifier
• Features soft-start circuitry to prevent startup overshoot

Applications

• Step-down DC-DC converter designs requiring compact footprint
• Battery-powered portable electronics
• Industrial equipment power management

Procurement Notes

Verify the specific suffix BLPT2G against official ABLIC documentation to confirm package type and tape/reel specifications. Ensure compatibility with external Pch MOSFETs or PNPs as required by the controller topology. Confirm RoHS compliance status through current datasheets.

Selection Notes

Select this component when a synchronous or non-synchronous buck controller with automatic light-load efficiency improvement is needed. The S-8521 series is suitable for applications demanding low ripple and excellent transient response compared to standard PWM-only controllers.

Part Context

This part belongs to the S-8520/8521 series of CMOS step-down switching regulator controllers. While the S-8520 series uses fixed PWM control, the S-8521 variant adds PFM capability for enhanced light-load performance. The E30 designation indicates a fixed 3.0 V output setting.

Replacement Considerations

S-8521E30MC-BJH-T2G is a documented alternative within the same series offering identical functional characteristics.