S-8338ACBC-T8T1G

Overview

The S-8338ACBC-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
• Supports high-frequency PWM operation with externally adjustable oscillation settings
• Features a fixed maximum duty ratio for simplified circuit design

Applications

• Power supply units for LCD panels
• Portable electronic systems requiring low voltage operation
• Step-up DC-DC converter designs

Procurement Notes

Verify the specific suffix ACBC against official datasheets to confirm package type and availability status. Confirm RoHS compliance details as specifications may vary by manufacturing batch. Ensure ordering quantities align with manufacturer standard packaging requirements. Cross-reference part numbers with distributor catalogs to validate current production status before procurement.

Selection Notes

Select this component when designing boost converters requiring a minimum operating voltage of 1.8 V. The fixed 88% duty ratio distinguishes it from the S-8337 series, which allows variable duty ratio adjustment. Consider the 1.133 MHz maximum frequency capability for optimizing external component size while maintaining stability through proper compensation network configuration.

Part Context

This controller belongs to the S-8337/8338 series of high-frequency step-up switching regulators. The series is designed for portable applications due to its low minimum operating voltage. The S-8338 variant specifically features a fixed maximum duty ratio, contrasting with the S-8337 series which offers adjustable duty ratios via external resistors.

Replacement Considerations

The S-8337ABEC-T8T1G serves as a functional alternative within the same series, offering similar electrical characteristics but with an externally adjustable maximum duty ratio instead of a fixed value.