S-8333AADC-T8T1G

Overview

The S-8333AADC-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 device supports an internal oscillation frequency up to 1.08 MHz, adjustable via an external resistor on the ROSC pin. It features under-voltage lockout (UVLO), timer latch short-circuit protection, and soft-start functionality. The component is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates PWM control with adjustable maximum duty ratio via external resistor
• Includes built-in under-voltage lockout and timer latch short-circuit protection
• Features soft-start function to manage inrush current during power application

Applications

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

Procurement Notes

Verify the specific output voltage setting associated with the 'ADC' suffix against the official datasheet before procurement. Confirm that the required switching frequency and duty cycle settings align with the external component values specified in the design documentation. Ensure compatibility with the target PCB layout for the TSSOP-8 package.

Selection Notes

Select this component when a low minimum operating voltage of 1.8 V is required for step-up applications. Consider the adjustable frequency capability up to 1.08 MHz for optimizing external component size. Verify that the system requires a separate external switch transistor, as this device functions as a controller rather than an integrated power stage.

Part Context

This part belongs to the S-8333 Series of high-frequency PWM control switching regulator controllers. The series is designed for portable equipment and LCD power supplies, offering flexibility through externally adjustable oscillation frequencies and duty ratios while maintaining compact package dimensions suitable for space-constrained designs.

Replacement Considerations

Consult the manufacturer's substitution guide for verified alternatives. Cross-reference electrical parameters such as input voltage range, switching frequency limits, and package type to ensure functional equivalence without redesigning the surrounding circuitry.