S-8521F30MC-BPPT2U

Overview

The S-8521F30MC-BPPT2U is a step-up switching regulator manufactured by ABLIC Inc., designed for efficient voltage conversion in portable electronics. It operates with a fixed output voltage of 3.0V and supports an input voltage range from 0.7V to 5.5V. The device integrates a 400mA switch current limit and maintains a typical operating current of 33µA. It utilizes a PWM control scheme at a fixed switching frequency of 250kHz, housed in a compact SOT-23-5 package suitable for surface-mount applications.

Feature Summary

• Integrates a high-efficiency internal power switch with a 400mA current limit for stable boost operation
• Features ultra-low operating current consumption to extend battery life in portable devices
• Utilizes fixed-frequency PWM control to minimize external component size and reduce electromagnetic interference

Applications

• Battery-powered mobile communication devices
• Portable medical equipment requiring stable voltage rails
• Handheld consumer electronics with single-cell lithium-ion power sources

Procurement Notes

Verify the specific suffix BPPT2U against official ABLIC documentation to confirm pinout compatibility and marking codes. Ensure the ordering quantity aligns with manufacturer reel specifications. Cross-reference the datasheet revision date to validate electrical characteristics prior to integration into final designs.

Selection Notes

Select this component when a compact solution is required for boosting low-voltage inputs to a stable 3.0V rail. The fixed 250kHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the 33µA operating current for applications prioritizing standby efficiency over maximum load performance.

Part Context

This part belongs to the S-8521 series of step-up regulators from ABLIC Inc. The series is characterized by its small footprint and low quiescent current, targeting applications where space and power efficiency are critical constraints. It complements the broader portfolio of PMIC solutions offered by the manufacturer.

Replacement Considerations

Direct substitutes include other S-8521 variants with different output voltages or package options, provided the electrical parameters match the design requirements. Verify pin-to-pin compatibility before substitution.