S-8333AAFA-T8T1G

Overview

The S-8333AAFA-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 maximum frequency of 1.08 MHz, adjustable via an external resistor on the ROSC pin. It includes under-voltage lockout (UVLO), timer latch short-circuit protection, and soft-start functionality. The component is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates PWM control with adjustable oscillation frequency up to 1.08 MHz for efficient step-up regulation
• Includes built-in timer latch short-circuit protection and under-voltage lockout circuits for enhanced reliability
• Supports low-voltage operation starting at 1.8 V, suitable for portable systems and LCD power supplies

Applications

• Power supply units for liquid crystal displays (LCD)
• Portable electronic systems operating on low voltage sources
• General-purpose DC-DC step-up converter designs

Procurement Notes

Verify the specific output voltage configuration associated with the AAFA suffix against the official datasheet before procurement. Confirm that the required switching frequency and duty cycle settings align with the external resistor values specified in the application circuit. Ensure the order quantity meets the manufacturer's standard reel packaging requirements.

Selection Notes

Select this component when a low minimum operating voltage of 1.8 V is required for step-up applications. Consider the 1.08 MHz maximum switching frequency for compact passive component sizing. Verify compatibility with the target load current and ensure the thermal performance of the TSSOP-8 package suits the enclosure constraints.

Part Context

This part belongs to the S-8333 series of high-frequency PWM control switching regulators. The series is designed for applications requiring low input voltages and integrated protection features. The T8T1G suffix indicates the specific tape and reel packaging format used for surface-mount assembly.

Replacement Considerations

Direct replacements within the same series include S-8333AACB-T8T1G, S-8333AADB-T8T1G, S-8333ABFC-T8T1G, and S-8333ACCC-T8T1G. These variants share identical electrical characteristics and pinouts but differ in fixed output voltage settings defined by their respective suffixes.