S-8338AAAC-T8T1G

Overview

The S-8338AAAC-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 supports a maximum internal oscillation frequency of 1.133 MHz via an external resistor on the ROSC pin. The device features a fixed maximum duty ratio of 88% and utilizes pulse width modulation (PWM) control. It includes an under-voltage lockout circuit and a timer latch short-circuit protection circuit. The component is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for high-frequency step-up regulation
• Includes under-voltage lockout and timer latch short-circuit protection circuits for enhanced reliability
• Allows adjustable phase compensation and gain via external resistor and capacitor connections

Applications

• Power supply for LCD modules
• Portable systems operating on low voltage
• General-purpose DC-DC step-up converter designs

Procurement Notes

Verify the specific suffix codes against the official datasheet to ensure correct packaging and marking configurations. Confirm that the selected variant matches the required thermal performance and pinout specifications for the target application. Cross-reference part numbers with manufacturer updates to avoid obsolete or non-compliant stock.

Selection Notes

Select this controller when a fixed maximum duty ratio is acceptable for the boost topology requirements. Consider the S-8337 series if variable maximum duty ratio control via an external resistor is necessary. Ensure external components support the desired switching frequency range up to 1.133 MHz and meet the voltage ratings for the specific system environment.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for applications requiring low minimum operating voltages and compact power management solutions. The S-8338 variant specifically distinguishes itself by providing a fixed maximum duty ratio, simplifying design calculations compared to the adjustable variants in the same family.

Replacement Considerations

S-8338ABEC-T8T1G

FAQ

How is the internal oscillation frequency adjusted?

The internal oscillation frequency can be set up to 1.133 MHz by connecting a resistor to the ROSC pin.

What protection features are integrated into the controller?

The device includes an under-voltage lockout circuit (UVLO) and a timer latch short-circuit protection circuit.