S-8358B38MC-NQXT2U

Overview

The S-8358B38MC-NQXT2U is a boost switching controller IC from ABLIC, designed for step-up DC-DC conversion. It operates within an input voltage range of 0.9V to 10V and provides a fixed output voltage of 3.8V. The device features a low quiescent current of 25.9µA and supports a switching frequency of 100kHz. It utilizes PWM/PFM control modes and includes a transistor driver output stage. 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 PWM/PFM hybrid control for optimized efficiency across varying load conditions
• Features ultra-low quiescent current consumption to extend battery life in portable applications
• Supports wide input voltage ranges suitable for single-cell lithium-ion or alkaline battery systems

Applications

• Portable electronic devices requiring efficient step-up power management
• Battery-powered sensor modules and IoT nodes
• Handheld instruments with limited power supply constraints

Procurement Notes

Verify the specific suffix NQXT2U against official ABLIC documentation to confirm pinout compatibility and marking codes. Ensure that the ordering specifications match the required reel packaging quantities. Cross-reference the RoHS compliance status with the latest manufacturer declarations before finalizing procurement contracts.

Selection Notes

Select this component when a fixed 3.8V output is required from a variable input source. Consider the 25.9µA standby current for low-power sleep modes. Evaluate the 100kHz switching frequency against EMI requirements and external inductor size constraints. Confirm that the SOT-23-5 thermal performance meets the application's dissipation needs.

Part Context

This part belongs to the S-8358 series of boost switching controllers from ABLIC. The series is characterized by high integration and low power consumption, targeting mobile and wearable electronics. The S-8358 family offers various fixed output voltages to accommodate different system rail requirements while maintaining a consistent footprint and control architecture.

Replacement Considerations

Check ABLIC datasheets for other S-8358 variants with compatible pinouts and similar electrical characteristics. Verify if alternative manufacturers offer functionally equivalent boost controllers with matching input/output ranges and package dimensions.