S-8338ABIC-T8T1G

Overview

The S-8338ABIC-T8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC. It operates within an input voltage range of 1.8 V to 6 V, with a nominal supply of 3.3 V. The device utilizes pulse width modulation (PWM) control and features a fixed maximum duty ratio of 88%. Internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor on the ROSC pin. Phase compensation and gain are configurable through components connected to the CC pin. The IC includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection for enhanced system reliability
• Supports flexible frequency adjustment up to 1.133 MHz using external resistors
• Features configurable phase compensation and gain via external RC networks

Applications

• Power supplies for LCD panels
• Portable systems operating on low voltage
• Step-up DC-DC converter designs requiring high-frequency operation

Procurement Notes

Verify the specific suffix 'ABIC' against official ABLIC documentation to confirm exact electrical characteristics and package type. Ensure compatibility with required input voltage ranges and switching frequencies. Confirm RoHS compliance status and lead-free specifications prior to ordering. Check for any product change notifications or obsolescence notices that may affect long-term availability.

Selection Notes

Select this component when a wide input voltage range down to 1.8 V is required for low-power portable applications. The fixed 88% duty ratio distinguishes it from variants with adjustable limits. Consider the need for external frequency setting and phase compensation adjustments. Evaluate thermal performance and PCB layout requirements for the TSSOP-8 package in high-density designs.

Part Context

The S-8338ABIC-T8T1G belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. This family is designed for efficient power management in battery-operated devices. The S-8338 variant specifically offers a fixed maximum duty ratio, differing from the S-8337 series which allows duty ratio control via external resistors. Both series share similar internal architectures including reference voltage circuits and error amplifiers.

Replacement Considerations

S-8338ACCB-T8T1G: Similar S-8338 series controller with TSSOP-8 package. Verify if duty ratio and frequency settings match application needs. S-8338ABEC-T8T1G: Alternative S-8338 variant; check package and electrical parameter alignment. S-8337ABEC-T8T1G: S-8337 series counterpart; note differences in duty ratio adjustability.