S-8355M30MC-MCPT2U

Overview

The S-8355M30MC-MCPT2U is a boost DC-DC switching controller IC from ABLIC Inc., designed for step-up voltage regulation. It operates within an input supply range of 0.9V to 10V and delivers a fixed output voltage of 3.0V. The device features a switchable PWM/PFM control mode and a fixed switching frequency of 300kHz, with a maximum duty cycle of 85%. Packaged in a compact SOT-23-5 (SC-74A) surface-mount case, it supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Supports switchable PWM or PFM control modes for optimized efficiency under varying load conditions
• Integrates a high-speed oscillator enabling stable operation at a 300kHz switching frequency
• Features a low-voltage startup capability allowing operation from inputs as low as 0.9V

Applications

• Battery-powered portable electronic devices requiring voltage boosting
• Low-voltage sensor interfaces needing regulated higher supply rails
• General-purpose power management in space-constrained mobile applications

Procurement Notes

Verify the complete part number including suffixes such as MCPT2U against official ABLIC documentation to ensure correct package type and marking configuration. Confirm RoHS compliance status via current manufacturer statements prior to integration. Cross-reference ordering information with authorized distributors to validate availability and standard packaging quantities.

Selection Notes

Select this component when a fixed 3.0V output is required from a variable low-voltage source. The 300kHz frequency offers a balance between component size and efficiency. Ensure the external inductor and diode ratings exceed the controller's internal switch limits. Verify that the application load does not exceed the device's specified output current capabilities.

Part Context

This unit belongs to the S-8355 series of super-small package step-up converters. The series is characterized by its ability to operate from very low input voltages while maintaining regulation in a minimal footprint. It serves as a core power management solution for modern miniaturized electronics where space and low standby current are critical design constraints.

Replacement Considerations

Direct substitutes include other S-8355 variants with different output voltages or frequencies, such as S-8355M30MC-MCPT2G. Ensure pin compatibility and thermal performance match the original design requirements before substitution.