S-8333CCBC-T8T1U

Overview

The S-8333CCBC-T8T1U is a CMOS step-up switching regulator controller from the S-8333 series, manufactured by ABLIC Inc. It operates with a minimum input voltage of 1.8 V and features an internal oscillator with a frequency settable up to 1.2 MHz via an external resistor on the ROSC pin. The device utilizes PWM control for efficient voltage conversion. Key integrated circuits include a reference voltage circuit, error amplifier, under-voltage lockout (UVLO), and a timer latch short-circuit protection circuit. The maximum duty ratio is adjustable through an external resistor connected to the RDuty pin, allowing for flexible design configurations.

Feature Summary

• Integrates a timer latch short-circuit protection circuit for enhanced reliability
• Features an adjustable maximum duty ratio controlled by an external resistor
• Includes an under-voltage lockout circuit for stable operation at low input voltages
• Supports phase compensation and gain adjustment via external components

Applications

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

Procurement Notes

Verify the specific suffix T8T1U corresponds to the TSSOP-8 package and reel packaging configuration as documented in official ABLIC datasheets. Confirm that the CCBC designation aligns with the intended electrical characteristics and pinout requirements for your application. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and availability of current production batches.

Selection Notes

Select this component when designing systems requiring a wide input voltage range starting from 1.8 V. The adjustable oscillation frequency allows optimization for efficiency versus component size. Ensure external resistors for ROSC and RDuty pins are selected to meet specific frequency and duty cycle requirements. Consider the thermal performance of the TSSOP-8 package for the expected load conditions.

Part Context

This part belongs to the S-8333/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for applications demanding low minimum operating voltages and compact solutions. The S-8333 variant specifically offers adjustable duty ratios, distinguishing it from fixed-duty counterparts like the S-8338 series within the same product family.

Replacement Considerations

The S-8333ABEC-T8T1G is a documented substitute within the same series offering similar step-up switching controller functionality. Verify pin compatibility and electrical parameter alignment before substitution.