S-8333AAEA-T8T1G

Overview

The S-8333AAEA-T8T1G is a CMOS step-up switching regulator controller from the ABLIC S-8333 series. It integrates a reference voltage circuit, oscillator, error amplifier, PWM controller, under-voltage lockout (UVLO), and timer latch short-circuit protection. Designed for low-voltage operation with a minimum operating voltage of 1.8 V, it supports an internal oscillation frequency up to 1.2 MHz via an external resistor on the ROSC pin. The device utilizes pulse-width modulation (PWM) control and features a TSSOP-8 package.

Feature Summary

• Integrates high-frequency PWM control with adjustable oscillation up to 1.2 MHz
• Features built-in timer latch short-circuit protection for enhanced reliability
• Supports low-voltage input starting at 1.8 V for portable applications

Applications

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

Procurement Notes

Verify the specific output voltage setting associated with the 'AA' suffix against the official datasheet before procurement. Confirm that the TSSOP-8 package dimensions and thermal requirements align with the target PCB layout. Ensure compatibility with the required external inductor and capacitor specifications for stable PWM operation at the selected frequency.

Selection Notes

Select this component when a compact solution for boosting low input voltages is required. The integrated UVLO and short-circuit protection simplify design complexity compared to discrete controllers. Consider the maximum duty cycle limitations defined by the external RDu resistor if precise output regulation near the input voltage is necessary.

Part Context

This part belongs to the S-8333 series of step-up switching regulator controllers. The series is characterized by its ability to operate from very low input voltages, making it suitable for single-cell battery applications. The 'T8T1G' suffix indicates the TSSOP-8 tape and reel packaging format compliant with RoHS standards.

Replacement Considerations

Direct substitutes within the same family include S-8333AACB-T8T1G and S-8333ABCC-T8T1G, which share identical functional blocks but differ in fixed output voltage settings. Verify that the replacement part's output voltage matches the system requirement.