S-8338ABFC-T8T1G

Overview

The S-8338ABFC-T8T1G is a CMOS step-up switching regulator controller from the S-8338 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 supports an internal oscillation frequency adjustable up to 1.133 MHz via an external resistor on the ROSC pin. It features a fixed maximum duty ratio of 88% and 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, oscillator, error amplifier, and PWM controller for efficient step-up regulation
• Features timer latch short-circuit protection circuit for enhanced operational safety
• Supports external adjustment of phase compensation and gain values via connected resistors and capacitors

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltage sources

Procurement Notes

Verify the specific suffix codes against the official datasheet to confirm pin compatibility and electrical characteristics. Confirm RoHS compliance status and moisture sensitivity level prior to integration. Ensure the selected packaging matches the required reel specifications for automated assembly processes.

Selection Notes

Select this controller when designing boost converters requiring high-frequency operation up to 1.2 MHz with precise duty cycle control. It is suitable for applications needing low minimum operating voltages and integrated protection mechanisms. Evaluate external component requirements for frequency setting and phase compensation to ensure stability.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for portable systems and LCD power supplies, offering flexibility through external component adjustments for frequency and duty ratio control while maintaining compact form factors.

Replacement Considerations

The S-8337 series serves as a functional alternative within the same family, differing primarily in maximum duty ratio adjustability. Verify pinout compatibility and electrical parameter alignment before substitution.