S-8338ABAC-T8T1G

Overview

The S-8338ABAC-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 features an internal oscillator with a frequency settable up to 1.133 MHz via an external resistor on the ROSC pin. It provides 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 system safety
• Supports adjustable phase compensation and gain via external RC components connected to the CC pin

Applications

• Power supply for LCD modules
• Portable systems operating on low voltage sources
• Battery-powered electronic devices requiring step-up conversion

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm pin compatibility and electrical characteristics. Confirm RoHS compliance status through current manufacturer declarations. Ensure the ordering quantity aligns with standard reel packaging requirements specified by the supplier. Cross-reference the part number with the latest datasheet revision to account for any design changes or obsolescence notices.

Selection Notes

Select this controller when a fixed maximum duty ratio is required rather than user-adjustable limits found in the S-8337 series. Choose based on the need for high-frequency operation up to 1.2 MHz to minimize passive component size. Consider the 1.8 V minimum operating voltage for applications powered by single-cell lithium batteries or similar low-voltage sources.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant is distinguished by its fixed maximum duty ratio, whereas the S-8337 allows adjustment via an external resistor. Both series share identical core architectures including UVLO and short-circuit protection mechanisms.

Replacement Considerations

The S-8337ABAC-T8T1G serves as a functional alternative within the same series, offering adjustable maximum duty ratio instead of the fixed 88% limit. Verify that the application design accommodates the variable duty cycle capabilities of the S-8337 series if substitution is considered.