S-8338ABBB-T8T1G

Overview

The S-8338ABBB-T8T1G is a CMOS step-up switching regulator controller from the S-8338 series 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 internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor on the ROSC pin. The maximum duty ratio is fixed at 88%. The device incorporates under-voltage lockout (UVLO) and timer latch short-circuit protection circuits, housed in an 8-pin TSSOP package.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection for enhanced operational safety
• Features a low minimum operating voltage suitable for portable systems
• Allows adjustment of phase compensation and gain via external components

Applications

• Power supply for LCD modules
• Portable electronic systems requiring low voltage operation

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status through current manufacturer declarations. Ensure design-in compatibility with required input voltage ranges and switching frequencies before procurement.

Selection Notes

Select this component when a fixed maximum duty ratio of 88% is required, distinguishing it from the S-8337 series which allows variable duty ratio control. Consider the 1.8 V minimum operating voltage for battery-powered applications. Verify that the TSSOP-8 package meets the thermal and spatial constraints of the target PCB layout.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for step-up applications where compact size and low voltage operation are critical. The S-8338 variant specifically provides a fixed maximum duty ratio, simplifying external circuit design compared to the adjustable duty ratio options available in the S-8337 series.

Replacement Considerations

S-8338ABEC-T8T1G: Same series, different package or suffix variation; verify electrical equivalence.