S-8357H33MC-NMST2U

Overview

The S-8357H33MC-NMST2U is a step-up switching regulator controller from ABLIC, designed for boost topology applications. It operates within an input voltage range of 0.9V to 10V and delivers a fixed output voltage of 3.1V. The device features a switching frequency of 250kHz and maintains a low quiescent current of 25.9µA. It supports a maximum duty cycle of 78% and provides an output current capability of approximately 26mA. The component is housed in a compact SOT-23-5 package and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a high-efficiency boost converter controller with a fixed 3.1V output setting.
• Operates over a wide input voltage range from 0.9V to 10V for flexible power supply compatibility.
• Features ultra-low standby current consumption to extend battery life in portable devices.
• Includes built-in protection mechanisms such as over-current protection and thermal shutdown.

Applications

• Battery-powered portable electronic devices requiring efficient voltage boosting
• Mobile communication equipment and handheld terminals
• Consumer electronics utilizing single-cell lithium-ion or alkaline batteries

Procurement Notes

Verify the complete part number including the suffix NMST2U to ensure correct packaging and tape-and-reel specifications. Confirm that the required output voltage matches the fixed 3.1V variant, as other versions in the S-8357 series offer different fixed outputs. Ensure the application circuit design accounts for the 250kHz switching frequency when selecting external inductors and capacitors.

Selection Notes

Select this component when a fixed 3.1V output is required from a variable input source between 0.9V and 10V. It is suitable for designs prioritizing low quiescent current and compact footprint via the SOT-23-5 package. Consider alternative S-8357 variants if a different fixed output voltage or switching frequency is needed for specific filter requirements.

Part Context

This device belongs to the S-8357 series of DC-DC switching regulators by ABLIC. The series offers various fixed output voltages and packaging options to support diverse power management needs in small form-factor electronics. The S-8357H33MC-NMST2U specifically targets applications needing a stable 3.1V boost from lower input voltages.

Replacement Considerations

Compatible substitutes include other S-8357 series parts with identical 3.1V output and SOT-23-5 packaging, such as S-8357F33MC-MGST2U or S-8357G33MC-MIRT2U, provided pinout and electrical characteristics match the design requirements.