S-8338ACGA-T8T1G

Overview

The S-8338ACGA-T8T1G is a CMOS step-up switching regulator controller from ABLIC Inc., designed for portable systems and LCD power supplies. It operates within an input voltage range of 1.8 V to 6 V, featuring a fixed maximum duty ratio of 88.5%. The 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 external components connected to the CC pin. The device includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection for enhanced operational safety.
• Features a fixed maximum duty ratio of 88.5% for stable boost regulation.
• Allows flexible phase compensation and gain adjustment via external RC networks.

Applications

• Power supply for LCD panels
• Portable electronic systems operating at low voltages

Procurement Notes

Verify the specific suffix T8T1G corresponds to the 8-TSSOP package and reel packaging configuration. Confirm RoHS compliance status and ensure the component meets REACH regulations for the intended market. Check for any product change notifications regarding solder plating or material composition updates before finalizing procurement specifications.

Selection Notes

Select this controller when a fixed duty ratio is acceptable and external frequency setting is required. It is suitable for designs needing operation down to 1.8 V input. Ensure external components support the desired switching frequency range up to 1.133 MHz. Verify that the 8-TSSOP package fits the PCB layout constraints.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant distinguishes itself with a fixed maximum duty ratio, whereas the S-8337 allows variable duty ratio control via an external resistor. Both share similar core architectures including reference voltage circuits and error amplifiers.

Replacement Considerations

S-8338ABEC-T8T1G shares the same series and functional characteristics but may differ in package or suffix details. S-8337 series parts offer variable duty ratio control instead of fixed, requiring circuit redesign if duty cycle flexibility is needed.