S-8333ABCA-T8T1G

Overview

The S-8333ABCA-T8T1G is a CMOS step-up switching regulator controller from ABLIC Inc., designed for low-voltage portable applications. It integrates a reference voltage circuit, oscillator, error amplifier, PWM controller, under-voltage lockout (UVLO), and timer latch short-circuit protection. The device operates with a minimum input voltage of 1.8 V and supports an internal oscillation frequency up to 1.08 MHz via the ROSC pin. Maximum duty ratio is adjustable through the RDuty pin, while phase compensation is set via the CC pin. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection circuits
• Supports external adjustment of oscillation frequency and maximum duty ratio
• Features soft-start function at power application

Applications

• Power supply for LCD modules
• Portable systems operating on low voltage

Procurement Notes

Verify the specific suffix 'ABCA' against official datasheets to confirm exact factory preset parameters, as these often define fixed electrical characteristics distinct from other series variants. Confirm RoHS compliance status and ensure the TSSOP-8 footprint matches the target PCB design before finalizing procurement orders.

Selection Notes

Select this component when designing boost converters requiring high-frequency operation up to 1.08 MHz with minimal external components. Ensure the application requires an adjustable duty cycle via the RDuty pin rather than a fixed configuration. Verify that the system input voltage remains within the 1.8 V to 6 V operating range for stable performance.

Part Context

This part belongs to the S-8333 Series of high-frequency PWM control switching regulators. It shares architectural similarities with the S-8337/8338 series but is optimized for integrated step-up regulation functions. The series is characterized by its ability to operate from very low input voltages, making it suitable for battery-powered devices where efficiency and size are critical constraints.

Replacement Considerations

S-8333AACB-T8T1G and S-8333AADB-T8T1G are documented members of the same S-8333 series family. Verify if their specific factory presets match the required output voltage or duty cycle configurations before substitution.