S-8333ACDA-T8T1G

Overview

The S-8333ACDA-T8T1G is a CMOS step-up switching regulator controller from the S-8333 Series, manufactured by ABLIC Inc. It operates within a supply voltage range of 1.8 V to 6 V and utilizes an internal oscillator with a frequency adjustable up to 1.08 MHz via an external resistor. The device features PWM control with a maximum duty ratio of 0.89, configurable phase compensation, and short-circuit protection. Packaged in an 8-TSSOP surface-mount case, it supports positive output boost topology for portable systems.

Feature Summary

• Integrates reference voltage, error amplifier, and under-voltage lockout circuits
• Allows external adjustment of oscillation frequency and maximum duty ratio
• Includes timer latch short-circuit protection circuit
• Supports phase compensation and gain adjustment via external components

Applications

• Power supplies for LCD panels
• Portable electronic systems operating on low voltage
• Step-up DC-DC converter designs requiring high-frequency operation

Procurement Notes

Verify the specific suffix ACDA against official datasheets to confirm pinout and electrical characteristics, as variations exist within the series. Confirm RoHS compliance status through current manufacturer documentation. Ensure the 8-TSSOP package dimensions match your PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when a low minimum operating voltage of 1.8 V is required for battery-powered applications. Choose the S-8333ACDA variant specifically if external control over the maximum duty ratio is necessary, distinguishing it from fixed-duty variants. Ensure the design accommodates the required external resistors and capacitors for frequency and compensation settings.

Part Context

This part belongs to the S-8333 Series of high-frequency PWM control switching regulators. It shares architectural similarities with the S-8337 and S-8338 series but offers distinct duty ratio configurability. The series is designed for efficiency in compact power management solutions using standard surface-mount packaging technologies.

Replacement Considerations

Direct substitutes include other S-8333 series variants such as S-8333AADB-T8T1G, provided the duty ratio specifications align with the application requirements. Cross-series replacements like S-8337 or S-8338 models require verification of duty ratio constraints and pin compatibility.