S-8333AAIA-T8T1G

Overview

The S-8333AAIA-T8T1G is a CMOS step-up switching regulator controller from the S-8333 series, manufactured by ABLIC Inc. It operates with a fixed internal oscillation frequency of 1.2 MHz and utilizes pulse width modulation (PWM) control. The device supports an input voltage range of 1.8 V to 6 V and features a maximum duty cycle of 0.89. Packaged in an 8-TSSOP format, it includes built-in under-voltage lockout and timer latch short-circuit protection circuits. The component is designed for portable systems requiring low-voltage operation.

Feature Summary

• Integrates high-frequency PWM control with a fixed 1.2 MHz internal oscillator for compact external component sizing.
• Features low minimum operating voltage capability starting at 1.8 V, suitable for single-cell battery applications.
• Includes integrated safety mechanisms such as under-voltage lockout and timer latch short-circuit protection.

Applications

• Power supply units for liquid crystal displays (LCDs)
• Portable electronic devices operating on low voltage sources
• General-purpose DC-DC step-up converter controllers

Procurement Notes

Verify the specific suffix 'AAIA' against the official ABLIC datasheet to confirm the exact output configuration or pinout variant, as suffixes define functional differences within the S-8333 family. Confirm availability status directly with the manufacturer, as this part may be subject to special order requirements or production lifecycle changes. Ensure the 8-TSSOP package dimensions match the target PCB footprint constraints before finalizing procurement.

Selection Notes

Select this controller when a fixed 1.2 MHz switching frequency is required to minimize external inductor and capacitor sizes. It is appropriate for designs needing protection against short circuits via a timer latch mechanism. Consider the 1.8 V minimum input voltage limit when choosing between this model and other regulators that support lower input thresholds. Verify that the 8-TSSOP package is compatible with the assembly process and thermal requirements of the application.

Part Context

The S-8333AAIA-T8T1G belongs to the S-8333 series of step-up switching regulator controllers. This series is characterized by its high-frequency operation and low input voltage requirements. Similar parts in the series, such as the S-8333AACB and S-8333ABCC, share the same core architecture but differ in output configurations or specific electrical parameters defined by their unique suffixes. All variants utilize the 8-TSSOP package.

Replacement Considerations

Direct substitutes within the same series include S-8333AACB-T8T1G and S-8333ABCC-T8T1G. These components share identical packaging and core control features. Verify if the specific output configuration associated with the 'AAIA' suffix matches the requirements of the replacement part. Cross-reference the official datasheet to ensure no functional discrepancies exist between the suffix designations.