S-8333ACCA-T8T1G

Overview

The S-8333ACCA-T8T1G is a CMOS step-up switching regulator controller manufactured by ABLIC Inc. It operates within an input voltage range of 1.8 V to 6 V and utilizes pulse width modulation (PWM) control. The internal oscillation frequency is adjustable up to 1.08 MHz via an external resistor connected to the ROSC pin. The maximum duty ratio is configurable through an external resistor on the RDuty pin. The device incorporates under-voltage lockout, timer latch short-circuit protection, and soft-start functionality. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection
• Features adjustable internal oscillation frequency for optimized component selection
• Includes programmable maximum duty ratio control via external resistance
• Provides soft-start function at power application to limit inrush current

Applications

• Power supply for LCD panels
• Portable systems operating on low voltage
• Battery-powered devices requiring step-up regulation

Procurement Notes

Verify the specific suffix against official documentation to confirm exact electrical characteristics and availability status. Confirm RoHS compliance and environmental declarations with the manufacturer prior to procurement. Ensure the ordering information matches the required package type and marking codes for production integration.

Selection Notes

Select this component when a low minimum operating voltage and high-frequency operation are required. The adjustable frequency allows optimization of external inductor and capacitor sizes. Verify that the external components support the desired switching frequency and duty ratio settings defined by the application requirements.

Part Context

This part belongs to the S-8333 Series of step-up switching regulators. The series is designed for portable applications requiring efficient power conversion from low voltage sources. The controller architecture separates the control logic from the power switch, allowing flexibility in selecting external MOSFETs based on current requirements.

Replacement Considerations

Consult official substitution lists for verified alternatives. Cross-reference pinouts and electrical specifications before replacing.