S-8333AAAB-T8T1G

Overview

The S-8333AAAB-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 frequency settable up to 1.133 MHz via an external resistor connected to the ROSC pin. Designed for low-voltage applications, it includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage circuit, error amplifier, and PWM controller
• Features under-voltage lockout and timer latch short-circuit protection
• Allows adjustable oscillation frequency via external resistor
• Supports low minimum operating voltage for portable systems

Applications

• Power supply for LCD panels
• Portable electronic systems requiring low voltage operation
• Step-up DC-DC converter designs

Procurement Notes

Verify the specific suffix 'AAAB' against official ABLIC documentation to confirm exact electrical characteristics and availability status. Confirm RoHS compliance and lead times directly with authorized distributors or the manufacturer, as these parameters are subject to change and require real-time verification before procurement.

Selection Notes

Select this component when designing boost converters requiring high-frequency operation up to 1.133 MHz. Ensure the application supports the 1.8 V to 6 V input range. Consider the need for external resistors for frequency setting and duty cycle control if utilizing the S-8337 variant features, though verify specific pin configurations for the AAAB suffix.

Part Context

This part belongs to the S-8333 series of high-frequency PWM control switching regulator controllers. It is designed to drive external power switches in step-up topologies. The series is characterized by its ability to operate at low voltages, making it suitable for battery-powered devices where efficient power management is critical.

Replacement Considerations

The S-8333AACB-T8T1G and S-8333AADB-T8T1G are documented variants within the same series offering similar step-up controller functionality. Verify pin compatibility and specific electrical tolerances before substitution.