S-816A42AMC-BART2G

Overview

The S-816A42AMC-BART2G is a linear regulator controller IC manufactured by ABLIC Inc., designed for use with external transistors to achieve high-current output capabilities. It provides a fixed output voltage of 4.2 V and supports an output current of 1 A. The device operates within an input voltage range up to 16 V and functions reliably across a temperature range of -40°C to +85°C. It is housed in a compact SC-74A (SOT-753) surface-mount package, suitable for space-constrained power management applications requiring precise voltage regulation.

Feature Summary

• Functions as a controller IC requiring an external transistor for high-current operation
• Provides a fixed 4.2 V output voltage
• Supports up to 1 A output current capability via external components
• Operates with input voltages up to 16 V

Applications

• Battery-powered portable devices requiring stable 4.2 V supply
• Industrial equipment needing high-current regulation from higher voltage sources
• Automotive electronics operating within specified temperature ranges

Procurement Notes

Verify the specific ordering suffix and tape/reel configuration directly with ABLIC Inc. or authorized distributors before purchase. Confirm that the SC-74A package dimensions match your PCB footprint requirements. Ensure the design includes appropriate external transistors and passive components as specified in the official datasheet to achieve the rated 1 A output current and thermal performance.

Selection Notes

Select this component when a fixed 4.2 V output is required with current capabilities exceeding standard LDO limits. It is suitable for designs where an external pass element is acceptable to handle higher loads. Consider the 16 V maximum input voltage rating and the -40°C to +85°C operating range against your system's electrical and environmental constraints.

Part Context

This part belongs to the S-816 series of linear regulator controllers from ABLIC Inc. Unlike integrated LDOs, this series separates the control logic from the power stage, allowing designers to select external transistors optimized for specific current and thermal needs. This architecture offers flexibility in managing heat dissipation and output current compared to monolithic regulators.

Replacement Considerations

Direct replacements must be verified against the official ABLIC substitution list. Generic equivalents may not match the 4.2 V accuracy or 16 V input withstand voltage. Ensure any substitute maintains the SC-74A pinout and controller functionality if external transistor integration is retained.