S-8333ACBA-T8T1G

Overview

The S-8333ACBA-T8T1G is a CMOS step-up switching regulator controller from the S-8333 Series 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 on the ROSC pin. The maximum duty ratio is configurable through an external resistor connected to the RDuty pin. Phase compensation and gain are adjusted using components on the CC pin. The device includes under-voltage lockout (UVLO) and timer latch short-circuit protection, packaged in an 8-pin TSSOP.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection.
• Supports low-voltage operation starting at 1.8 V for portable systems.
• Allows flexible configuration of switching frequency and maximum duty ratio via external resistors.

Applications

• Power supply for LCD panels
• Portable electronic systems operating on low voltage

Procurement Notes

Verify the specific suffix ACBA against official datasheets to confirm exact electrical characteristics and availability. Confirm package type and RoHS compliance status directly with the manufacturer or authorized distributors before ordering.

Selection Notes

Select this component when designing boost converters requiring adjustable switching frequencies up to 1.08 MHz. Ensure external components for ROSC, RDuty, and CC pins are chosen to meet stability and transient response requirements.

Part Context

This part belongs to the S-8333 Series of high-frequency PWM control switching regulator controllers. It shares architectural similarities with the S-8337/8338 series but offers distinct duty ratio control features compared to fixed-duty variants.

Replacement Considerations

S-8333ABCB-T8T1G and S-8333ABCC-T8T1G are related series members. Verify functional equivalence regarding duty ratio control and frequency settings before substitution.