S-8356K40MC-NEZT2U

Overview

The ABLIC S-8356K40MC-NEZT2U is a step-up switching regulator controller designed for low-power applications. It operates with a fixed output voltage of 4 V and supports a maximum output current of 38.5 mA. The device features a wide input voltage range from 900 mV to 10 V, enabling compatibility with various power sources including single-cell lithium batteries. It incorporates an integrated N-channel MOSFET switch and offers selectable PWM or PFM operation modes to optimize efficiency across different load conditions. The quiescent current is specified at 25.9 uA, contributing to extended battery life in portable devices.

Feature Summary

• Integrates a high-efficiency N-channel MOSFET switch within a compact package
• Supports selectable PWM or PFM operation modes for optimized light-load performance
• Features ultra-low quiescent current consumption for extended battery operation
• Includes built-in protection functions such as overcurrent protection

Applications

• Portable electronic devices requiring efficient power management
• Single-cell lithium-ion or lithium-polymer battery powered systems
• Low-power sensor modules and IoT nodes
• Handheld medical instruments and diagnostic equipment

Procurement Notes

Verify the complete part number against official ABLIC documentation to ensure correct suffix alignment for packaging and temperature grade. Confirm that the specific ordering code matches the required operational parameters before procurement. Cross-reference the datasheet revision date to ensure access to the most current electrical specifications and mechanical drawings. Validate compliance requirements such as RoHS status through authorized distributors or direct manufacturer channels.

Selection Notes

Select this component when a fixed 4 V output is required from a single-cell lithium source. Evaluate the trade-off between PWM and PFM modes based on the application's typical load profile. Ensure the external inductor selection aligns with the internal switch current limits and desired ripple characteristics. Consider the thermal performance within the SOT-23-5 package relative to the expected ambient operating conditions and PCB copper area.

Part Context

This model belongs to the S-8356 series of step-up switching regulators from ABLIC Inc. The series is characterized by its integration of control logic and power switches in small packages. Variants within the series differ primarily by their fixed output voltage settings and specific package options. The S-8356 series targets applications where space constraints and low standby current are critical design factors.

Replacement Considerations

Direct replacements must match the 4 V fixed output and SOT-23-5 footprint. Verify pinout compatibility and electrical parameter equivalence for input voltage range and output current capacity. Check for functional differences in protection features and switching frequency if cross-referencing with other manufacturers' boost controllers.