S-8358F57MC-MLQT2U

Overview

The S-8358F57MC-MLQT2U is a step-up switching regulator controller from ABLIC, designed for battery-powered applications. It operates with an input voltage range of 0.9V to 10V and provides a fixed output voltage of 5.7V. The device features a low quiescent current of 25.9µA and supports a maximum duty cycle of 90%. It functions within a temperature range of -40°C to +85°C and is housed in a compact SOT-23-5 package.

Feature Summary

• Integrates a reference voltage source and oscillation circuit for efficient step-up conversion
• Supports operation from low input voltages starting at 0.9V
• Features high maximum duty cycle capability for wide input-to-output voltage ratios

Applications

• Single-cell alkaline or NiMH battery powered devices
• Portable electronic equipment requiring step-up regulation
• Battery-operated sensor modules

Procurement Notes

Verify the specific output voltage setting matches the target application requirements before procurement. Confirm that the SOT-23-5 package footprint aligns with the PCB layout design. Ensure the operating temperature range meets the environmental conditions of the final assembly. Cross-reference the manufacturer part number with official distributor catalogs to confirm authenticity and availability status.

Selection Notes

Select this component when a fixed 5.7V output is required from a single-cell battery source. Consider the 25.9µA quiescent current for battery life optimization. Evaluate the 90% maximum duty cycle against the minimum expected input voltage to ensure stable regulation. Compare with other series members if different output voltages or package types are needed.

Part Context

This part belongs to the S-8358 series of CMOS step-up switching regulator controllers. The series is characterized by low power consumption and compact packaging. It is designed to replace linear regulators in battery applications to extend operational time. The S-8358 series offers various fixed output voltage options to suit different system requirements.

Replacement Considerations

Direct substitutes include other S-8358 series variants with different output voltages, such as S-8358J33MC-NWST2U (3.3V) or S-8358E15MC-NSAT2U (1.5V), provided the output voltage requirement changes. Verify pin compatibility and thermal performance when substituting.