S-8357B33UA-NIST2G

Overview

The S-8357B33UA-NIST2G is a CMOS step-up switching regulator controller from ABLIC Inc., designed for high-efficiency power management. It operates with an input voltage range of 0.9V to 16V and provides a fixed output voltage of 3.3V. The device utilizes a high-withstand voltage CMOS process technology to ensure reliability under various operating conditions. It features a switching frequency of 100kHz, enabling the use of compact external components. The controller supports auto mode operation to maintain high efficiency during light load conditions, reducing current consumption significantly compared to continuous conduction modes.

Feature Summary

• High-withstand voltage CMOS process technology ensures robust performance
• Auto mode operation maintains high efficiency at light loads
• Wide input voltage range supports diverse power supply applications

Applications

• Portable electronic devices requiring efficient step-up conversion
• Battery-powered systems needing stable 3.3V output
• Low-power consumer electronics with variable input sources

Procurement Notes

Verify the exact part number suffix against official ABLIC documentation to confirm package type and tape/reel specifications. Ensure compatibility with your PCB layout requirements for the SOT-89-3 package. Cross-reference with authorized distributors to confirm authenticity and avoid counterfeit components. Check for any specific handling or storage instructions provided in the datasheet.

Selection Notes

Select this component when a fixed 3.3V output is required from a wide input voltage range. Consider its 100kHz switching frequency for balancing component size and efficiency. Evaluate the auto mode feature if light-load efficiency is critical for your application's battery life. Compare with other series members like the S-8357N series if higher switching frequencies are needed.

Part Context

This controller belongs to the S-8355/56/57/58 Series of CMOS step-up switching regulators. These controllers are designed to work with external MOSFETs and passive components to create complete boost converter circuits. The series emphasizes low current consumption and high precision, suitable for modern portable electronics where power efficiency is paramount.

Replacement Considerations

Direct substitutes may include other models within the S-8357 series with different output voltages or switching frequencies, such as the S-8357N33MC-O2ST2G, though switching frequency differences must be accounted for in design.