S-8333ABEC-T8T1G

Overview

The S-8333ABEC-T8T1G is a CMOS step-up switching regulator controller from the S-8333 series, 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. It incorporates under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The maximum duty ratio is adjustable through an external resistor on the RDuty pin, while phase compensation and gain are configured using components on the CC pin. Packaged in an 8-TSSOP format.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Features low minimum operating voltage suitable for portable systems and LCD power supplies.
• Includes under-voltage lockout and timer latch short-circuit protection for enhanced reliability.

Applications

• Power supply for LCD panels
• Portable electronic systems operating on low voltage

Procurement Notes

Verify component authenticity directly with ABLIC Inc. or authorized distributors. Confirm datasheet revision and RoHS compliance status prior to integration. Ensure ordering suffixes match specific package and tape-and-reel requirements. Request official documentation to validate electrical characteristics against application needs.

Selection Notes

Select this controller when designing boost converters requiring adjustable switching frequencies up to 1.2 MHz. Consider its low input voltage capability for battery-powered applications. Evaluate external component values for ROSC, RDuty, and CC pins to optimize stability and transient response according to specific load conditions.

Part Context

This component belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. It shares architectural similarities with other members like the S-8337ABEC-T8T1G, differing primarily in fixed versus adjustable duty ratio configurations within the same family line designed for low-voltage step-up applications.

Replacement Considerations

S-8337ABEC-T8T1G serves as a parameter-equivalent alternative within the same series, offering similar functionality with potentially different duty ratio constraints.