S-8357H31MC-NMQT2G

Overview

The S-8357H31MC-NMQT2G is a step-up switching regulator controller manufactured by ABLIC Inc. It operates in boost topology with a fixed output voltage of 3.1 V and supports an output current of 231 mA. The device features a switching frequency of 250 kHz and a maximum duty cycle of 78%. It functions within an input voltage range of 0.9 V to 10 V, consuming a typical quiescent current of 31 uA. The component is rated for operation between -40 C and +85 C and is housed in an SOT-23-5 surface-mount package.

Feature Summary

• Integrates synchronous rectification for improved power conversion efficiency
• Supports continuous conduction mode (CCM) operation for stable load regulation
• Includes built-in soft-start circuitry to limit inrush current during startup

Applications

• Battery-powered portable electronic devices requiring voltage boosting
• Industrial control systems operating from low-voltage sources
• Automotive electronics utilizing single-cell lithium-ion battery inputs

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm pinout compatibility and electrical tolerances. Ensure the ordering quantity aligns with manufacturer minimum order requirements and reel specifications. Cross-reference the RoHS compliance status and environmental declarations prior to final procurement approval.

Selection Notes

Select this component when a compact solution is required for boosting low input voltages up to a precise 3.1 V rail. The integrated synchronous design reduces external component count compared to non-synchronous alternatives. Verify that the 231 mA output capability meets the peak load demands of the target application circuit.

Part Context

This part belongs to the S-8357 series of high-efficiency DC-DC converters designed for space-constrained applications. The series emphasizes low standby current consumption and minimal external component requirements. It serves as a power management solution for systems needing reliable voltage regulation from fluctuating input sources.

Replacement Considerations

S-8357H31MC-IWQT2G is a documented parameter-equivalent alternative within the same product family.