S-8333ACHC-T8T1G

Overview

The S-8333ACHC-T8T1G is a CMOS step-up switching regulator manufactured by ABLIC Inc. 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 utilizes external components on the CC pin. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates complete step-up switching regulation functions including PWM control and UVLO within a single CMOS chip.
• Supports low-voltage operation starting at 1.8 V, suitable for portable systems.
• Features adjustable internal oscillation frequency and maximum duty ratio via external resistors.
• Includes timer latch short-circuit protection circuit for enhanced reliability.

Applications

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

Procurement Notes

Verify the specific suffix codes against the official ABLIC datasheet to confirm output voltage settings and package variations. Confirm RoHS compliance status and lead times directly with the manufacturer or authorized distributors, as availability may vary. Ensure the ordering quantity matches the factory pack requirements specified in the procurement documentation.

Selection Notes

Select this component when designing boost converters requiring low input voltage capability and adjustable switching frequencies. Consider the external component requirements for frequency setting and duty cycle adjustment. Evaluate the thermal performance within the TSSOP-8 package for the intended application environment.

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 differs in specific control features and fixed parameters. The series is designed for applications demanding compact power management solutions with integrated protection mechanisms.

Replacement Considerations

Direct substitutes include other parts from the S-8333 series with compatible pinouts and electrical characteristics. Verify functional equivalence regarding input voltage range and switching frequency before substitution.