S-8338AACC-T8T1G

Overview

The S-8338AACC-T8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates with a minimum input voltage of 1.8 V and supports an internal oscillation frequency up to 1.133 MHz via the ROSC pin. The device utilizes PWM control with a fixed maximum duty ratio of 88%. It features an under-voltage lockout circuit and a timer latch short-circuit protection circuit. The component is housed in an 8-TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller within a single CMOS chip.
• Includes under-voltage lockout and timer latch short-circuit protection for enhanced operational safety.
• Allows phase compensation and gain adjustment through external resistor and capacitor connections.

Applications

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

Procurement Notes

Verify the specific suffix codes against official documentation to ensure correct packaging and marking configurations. Confirm RoHS compliance status and lead times directly with the manufacturer or authorized distributors prior to ordering. Ensure design-in compatibility with required input voltage ranges and switching frequencies.

Selection Notes

Select this model when a fixed maximum duty ratio is acceptable, as opposed to the adjustable ratio found in the S-8337 series. Consider the S-8338 series for applications requiring high-frequency operation up to 1.2 MHz with minimal external component count. Verify that the 1.8 V minimum operating voltage aligns with the system's power source requirements.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically distinguishes itself by having a fixed maximum duty ratio, whereas the S-8337 allows for variable duty ratio control via an external resistor. Both share similar internal architectures and protection features.

Replacement Considerations

The S-8337 series serves as a functional alternative if adjustable maximum duty ratio is required instead of the fixed 88% limit. Other members of the S-8338 family may be considered for different output configurations or pin assignments, provided electrical parameters remain compatible.