S-8333ACDB-T8T1G

Overview

The S-8333ACDB-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 features an internal oscillator with a frequency settable up to 1.08 MHz via an external resistor on the ROSC pin. Maximum duty ratio is adjustable through the RDuty pin, while phase compensation is configured using components connected to the CC pin. It includes under-voltage lockout and timer latch short-circuit protection circuits.

Feature Summary

• Integrates reference voltage circuit, error amplifier, and PWM controller for efficient power management
• Features low minimum operating voltage suitable for portable systems and LCD power supplies
• Includes built-in under-voltage lockout and timer latch short-circuit protection mechanisms

Applications

• Power supply for liquid crystal displays (LCDs)
• Portable electronic systems requiring low voltage operation
• Step-up DC-DC converter designs in consumer electronics

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm exact electrical parameters and package variations. Confirm RoHS compliance status and lead-free specifications prior to integration. Ensure compatibility with required oscillation frequency settings and duty cycle adjustments defined in the technical datasheet.

Selection Notes

Select this component when designing boost converters requiring high-frequency operation up to 1.08 MHz. Consider its suitability for applications needing adjustable maximum duty ratios and precise phase compensation. Evaluate the need for integrated short-circuit protection and low-voltage startup capabilities in the target system architecture.

Part Context

This part belongs to the S-8333 Series of CMOS step-up switching regulators. The series is designed for high-frequency PWM control applications. It shares architectural similarities with the S-8337/8338 series but offers distinct frequency and duty cycle adjustment options tailored for specific power management requirements.

Replacement Considerations

S-8333AADB-T8T1G serves as a parameter-equivalent alternative within the same product family.