S-8357F33MC-MGST2G

Overview

The S-8357F33MC-MGST2G is a step-up switching controller manufactured by ABLIC Inc. It utilizes a boost topology to provide a regulated output voltage of 3.3 V with a maximum output current capability of 38.5 mA. The device operates with a fixed switching frequency of 300 kHz and supports a maximum duty cycle of 78%. Designed for surface-mount installation, it is housed in an SOT-23-5 package. The component functions reliably within an ambient temperature range spanning from -40°C to +85°C.

Feature Summary

• Integrates a synchronous rectifier architecture to enhance conversion efficiency during step-up operation.
• Features a built-in oscillator that maintains a constant switching frequency independent of input voltage variations.

Applications

• Battery-powered portable electronic devices requiring efficient voltage boosting
• Low-power embedded systems utilizing single-cell lithium-ion or alkaline batteries
• General-purpose power management circuits in compact consumer electronics

Procurement Notes

Verify the specific suffix MGST2U against official manufacturer documentation to confirm pinout compatibility and marking codes. Ensure the ordering information matches the exact voltage tolerance and package variant required for your design. Cross-reference the RoHS compliance status directly with the latest datasheet revision to meet environmental regulations.

Selection Notes

Select this component when a compact solution is needed for boosting low input voltages to a stable 3.3 V rail. The SOT-23-5 package suits space-constrained layouts. Consider the 300 kHz switching frequency for balancing component size and noise. Verify that the load current requirements do not exceed the specified 38.5 mA limit under all operating conditions.

Part Context

This part belongs to the S-8357 series of synchronous rectifier step-up switching controllers from ABLIC. The series is characterized by high efficiency and low external component counts. Variants within the family differ primarily in their fixed output voltage settings while sharing the same core control logic and packaging options.

Replacement Considerations

Direct replacements include other S-8357 series variants with identical SOT-23-5 packaging and compatible output voltage specifications. Ensure any substitute maintains the 300 kHz switching frequency and synchronous rectification features to preserve circuit performance and footprint compatibility.