S-8333AACB-T8T1G

Overview

The S-8333AACB-T8T1G is a CMOS step-up switching regulator controller manufactured by ABLIC Inc. It operates within an input voltage range of 1.8V to 6V and utilizes PWM control with a switch frequency between 280kHz and 1.08MHz. The device features a maximum duty ratio of 0.89 and lacks synchronous rectification or clock synchronization capabilities. Designed for surface-mount installation, it is housed in an 8-TSSOP package measuring 4.40mm in width. The component supports positive output configurations and includes current limit and frequency control characteristics.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller circuits
• Features under-voltage lockout and timer latch short-circuit protection
• Allows external adjustment of oscillation frequency via the ROSC pin
• Supports phase compensation and gain value tuning through external components

Applications

• Power supply systems for LCD displays
• Portable electronic devices operating on low voltage sources
• General-purpose DC-DC boost converter designs

Procurement Notes

Verify RoHS compliance status and REACH restrictions before integration. Confirm the specific suffix designation matches the required electrical parameters. Ensure the TSSOP-8 footprint aligns with the target PCB layout. Check for any product change notifications affecting material composition or performance specifications.

Selection Notes

Select this controller when designing high-frequency boost converters requiring adjustable duty cycles. The wide input voltage range suits applications powered by single-cell lithium batteries. External component selection determines the final switching frequency and stability. Consider thermal management requirements associated with the TSSOP-8 package.

Part Context

This component belongs to the S-8333 series of high-frequency PWM control switching regulators. The series is characterized by its ability to operate at frequencies up to approximately 1.2MHz. It serves as a core controller element in power management integrated circuits designed for portable electronics.

Replacement Considerations

Consult official substitution lists for compatible controllers within the S-8333 family. Verify pin compatibility and electrical parameter alignment for direct replacements.