S-8333ACEC-T8T1G

Overview

The S-8333ACEC-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 with an internal oscillation frequency settable up to 1.08 MHz via an external resistor on the ROSC pin. The device features adjustable maximum duty ratio through an RDuty pin, programmable phase compensation via CC pin components, and integrated under-voltage lockout (UVLO). It includes a timer latch short-circuit protection circuit and soft-start functionality, housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for high-frequency step-up regulation
• Features timer latch short-circuit protection and under-voltage lockout circuits for enhanced reliability
• Supports adjustable maximum duty ratio and phase compensation through external passive components
• Includes soft-start function at power application to manage inrush current

Applications

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

Procurement Notes

Verify the specific suffix codes against official documentation to confirm exact electrical characteristics and packaging details. Confirm RoHS compliance status and lead times directly with the manufacturer or authorized distributors. Ensure the ordering information matches the required output specifications and thermal performance for the target application environment.

Selection Notes

Select this component when designing boost converters requiring a wide input voltage range starting from 1.8 V. The adjustable oscillation frequency allows optimization for efficiency and component size. Consider the external component requirements for setting the switching frequency, duty ratio, and loop stability during the schematic design phase.

Part Context

This part belongs to the S-8333 Series of high-frequency PWM control switching regulator controllers. The series is designed for applications demanding low minimum operating voltages and flexible configuration options. It serves as a core control element in standalone boost converter topologies, distinct from integrated switching regulators that include internal power switches.

Replacement Considerations

Consult official substitution lists for verified alternatives within the S-8333 family. Verify pin compatibility and electrical parameter equivalence before replacing.