S-8358H40MC-NUZT2U

Overview

The S-8358H40MC-NUZT2U is a step-up switching regulator controller from ABLIC, designed for efficient power management in compact electronic systems. It operates within an input voltage range of 0.9V to 10V and delivers a fixed output voltage of 4.0V. The device supports a maximum switch current of 300mA and functions at a switching frequency of 250kHz. It features a low quiescent current of 18.7µA and maintains operation across a temperature range of -40°C to +85°C. Packaged in a space-saving SOT-23-5 format, it integrates PWM control with soft-start capabilities.

Feature Summary

• Integrates PWM control with automatic PFM transition to optimize efficiency across varying load conditions.
• Features built-in soft-start circuitry to limit inrush current during startup sequences.
• Includes comprehensive protection mechanisms such as overcurrent protection and thermal shutdown.
• Utilizes a compact SOT-23-5 package to minimize printed circuit board area requirements.

Applications

• Portable battery-powered consumer electronics
• Wearable health monitoring devices
• Industrial sensor nodes requiring stable voltage regulation

Procurement Notes

Verify the complete part number including suffixes against official ABLIC documentation to ensure correct output voltage and package configuration. Confirm RoHS compliance status through manufacturer datasheets prior to integration. Cross-reference pinouts with ECAD models to prevent layout errors during PCB design implementation.

Selection Notes

Select this component when a fixed 4.0V output is required from variable input sources between 0.9V and 10V. Consider the 250kHz switching frequency for balancing component size and electromagnetic interference. Evaluate the 18.7µA quiescent current against system standby power budgets to ensure optimal energy efficiency in portable applications.

Part Context

This model belongs to the S-8358 series of step-up switching regulators from ABLIC. The series is characterized by high efficiency and low power consumption, targeting applications where battery life is critical. The S-8358 family offers various fixed output voltages and packaging options to suit diverse design constraints while maintaining consistent performance standards.

Replacement Considerations

Direct substitutes include other S-8358 series variants with identical pinouts but different output voltages, such as S-8358H33MC-NUZT2U for 3.3V output. Verify electrical compatibility and thermal characteristics before replacing components in existing designs.