S-8358F57MC-MLQT2G

Overview

The S-8358F57MC-MLQT2G is a step-up switching regulator controller manufactured by ABLIC Inc. It operates within an input voltage range of 0.9 V to 5.5 V and provides a fixed output voltage of 5.7 V. The device features a typical quiescent current of 25.9 uA and supports a maximum output current of 1 A. It utilizes PWM/PFM control modes and includes built-in protection functions such as overcurrent protection, thermal shutdown, and soft-start. The component is housed in a compact SOT-23-5 package and is rated for operation between -40°C and +85°C.

Feature Summary

• Integrates low standby current consumption with high efficiency boost conversion capabilities
• Includes comprehensive protection mechanisms against overcurrent conditions and excessive temperature
• Supports flexible switching frequency selection to optimize external component size

Applications

• Battery-powered portable electronic devices requiring efficient voltage boosting
• Mobile communication equipment utilizing single-cell lithium-ion power sources
• Handheld instruments needing stable regulated supply from low-voltage inputs

Procurement Notes

Verify the specific suffix MLQT2G matches the required tape-and-reel packaging configuration. Confirm that the fixed 5.7 V output aligns with the target circuit design requirements. Ensure compatibility with the specified SOT-23-5 footprint during PCB layout. Check for RoHS compliance documentation if environmental regulations apply to the final assembly process.

Selection Notes

Choose this component when a fixed 5.7 V output is required from a single-cell battery source. Consider the 25.9 uA quiescent current for applications prioritizing extended battery life in standby modes. Evaluate the need for internal protection features to simplify system-level safety design. Compare external component counts against alternative controllers to assess board space constraints.

Part Context

This part belongs to the S-8358 series of step-up switching regulators designed for ultra-low power applications. The series offers various fixed output voltages to accommodate different system requirements while maintaining consistent performance characteristics. ABLIC focuses on integrating high-efficiency power management solutions into small packages suitable for modern portable electronics.

Replacement Considerations

Direct substitutes include other S-8358 variants with compatible pinouts but different fixed output voltages. Verify electrical parameters such as output voltage tolerance and maximum current ratings before substitution. Ensure thermal performance and protection thresholds match the original design specifications.