S-8333ABDB-T8T1G

Overview

The S-8333ABDB-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 supports an internal oscillation frequency up to 1.2 MHz, adjustable via an external resistor. It features a timer latch short-circuit protection circuit and under-voltage lockout (UVLO). The component is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates PWM control with adjustable maximum duty ratio via external resistor
• Includes built-in timer latch short-circuit protection for enhanced reliability
• Supports low-voltage operation starting at 1.8 V

Applications

• Power supply circuits for LCD panels
• Portable electronic systems requiring low input voltage
• Battery-powered devices utilizing step-up topology

Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and electrical characteristics. Confirm RoHS compliance status and lead times directly with the manufacturer or authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when designing boost converters requiring high-frequency operation and precise duty cycle adjustment. Ensure the external inductor and capacitor values match the 1.2 MHz switching frequency requirements for optimal efficiency and stability.

Part Context

This part belongs to the S-8333 series of high-frequency step-up switching regulators. It shares architectural similarities with the S-8337 and S-8338 series but offers specific configuration options for duty ratio control suitable for various portable power applications.

Replacement Considerations

Direct substitutes include S-8333AAHB-T8T1G and S-8333ABFC-T8T1G from the same series. Verify functional equivalence regarding duty ratio control and protection features before substitution.