S-8341A33AFT-T2-U

Overview

The S-8341A33AFT-T2-U is a CMOS step-up switching regulator controller manufactured by ABLIC. It operates within an input voltage range of 0.9 V to 6 V and delivers a fixed output voltage of 3.3 V. The device supports a maximum output current of 500 mA and features an internal oscillation frequency adjustable up to 1 MHz via an external resistor. It incorporates under-voltage lockout, timer latch short-circuit protection, and soft-start functionality. The component is housed in an 8-pin TSSOP package and functions reliably across an operating temperature range of -40 °C to +85 °C.

Feature Summary

• Integrates high-speed PWM control with an internal oscillator for flexible frequency adjustment
• Includes built-in under-voltage lockout and timer latch short-circuit protection circuits
• Features soft-start capability to limit inrush current during startup

Applications

• Power supply systems for portable electronic devices
• LCD backlight drivers requiring stable voltage regulation
• General-purpose power management in battery-operated equipment

Procurement Notes

Verify the specific suffix 'T2-U' against official ABLIC documentation to confirm reel packaging specifications and tape-and-reel dimensions. Ensure that the selected variant matches the required environmental compliance standards and lead-free requirements for your assembly process. Cross-reference the part number with authorized distributors to confirm current availability and manufacturing status before finalizing procurement plans.

Selection Notes

Select this component when a low input voltage source requires efficient step-up conversion to a stable 3.3 V rail. The adjustable oscillation frequency allows optimization for size versus efficiency trade-offs using external passive components. Consider the 500 mA output capability and the wide input voltage range to ensure compatibility with single-cell lithium-ion or alkaline battery configurations in space-constrained designs.

Part Context

This model belongs to the S-8341 series of step-up switching regulator controllers from ABLIC. The series is designed for applications demanding high efficiency and compact solutions. The S-8341A33AFT-T2-U specifically provides a fixed 3.3 V output, distinguishing it from adjustable variants within the same family. It utilizes standard surface-mount packaging suitable for automated assembly processes.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional compatibility with existing designs if considering alternative manufacturers.