S-8358B32MC-NQRT2G

Overview

The S-8358B32MC-NQRT2G is a DC/DC switching controller IC manufactured by ABLIC Inc., designed for step-up (boost) converter applications. It operates within an input voltage range of 0.9V to 10V and utilizes a fixed internal clock frequency of 600kHz. The device features a maximum duty cycle of 85% and includes an enable control feature for power management. Packaged in a compact SC-74A (SOT-753/SOT-23-5) surface-mount case, it supports a wide operating temperature range from -40°C to +85°C. This component serves as the control unit for external power switches in boost regulator circuits.

Feature Summary

• Integrated step-up DC/DC switching controller with fixed 600kHz oscillation frequency
• Wide input voltage operation capability supporting low-voltage sources down to 0.9V
• Compact surface-mount packaging suitable for space-constrained portable designs

Applications

• Battery-powered portable electronic devices requiring voltage boosting
• Low-voltage input systems needing regulated higher output voltages
• Embedded systems utilizing external MOSFETs for high-efficiency power conversion

Procurement Notes

Verify the specific suffix NQRT2G against official ABLIC documentation to confirm package type and tape/reel specifications. Ensure compatibility with external switching components, as this is a controller rather than a complete regulator. Check RoHS compliance status and lead-free markings on supplier datasheets prior to ordering.

Selection Notes

Select this component when a dedicated boost controller is required rather than an integrated regulator. It is suitable for designs where external power switches are preferred for current handling or thermal reasons. Consider the 600kHz frequency for balancing efficiency and passive component size. Verify that the application requires an enable pin function for power sequencing.

Part Context

This part belongs to the S-8358 series of DC/DC switching controllers from ABLIC Inc. Unlike the S-8351 series which integrates the switch, the S-8358 series provides only the control logic, requiring external transistors. It is part of ABLIC's portfolio of analog semiconductor products focused on low-power consumption and high precision.

Replacement Considerations

Direct substitutes include other parts from the S-8358 family such as S-8358N50MC-O7JT2U, provided the output configuration and control characteristics match the design requirements. Cross-reference with other manufacturers' boost controllers if external switch integration is not mandatory.