S-8337AAGC-P8T1G

Overview

The S-8337AAGC-P8T1G is a CMOS step-up switching regulator controller from the S-8337 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 internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor connected to the ROSC pin. The maximum duty ratio is configurable through an external resistor on the RDuty pin. Phase compensation and gain are adjusted using external components at the CC pin. The device includes under-voltage lockout and timer latch short-circuit protection circuits.

Feature Summary

• Configurable PWM maximum duty ratio via external resistor
• Adjustable internal oscillation frequency up to 1.133 MHz
• Integrated under-voltage lockout and short-circuit protection

Applications

• Power supply for LCD panels
• Portable systems operating on low voltage

Procurement Notes

Verify the specific suffix 'P8' indicates the 8-SON package variant rather than TSSOP when sourcing. Confirm RoHS compliance status as some older revisions may differ. Ensure the ordering quantity aligns with manufacturer standard packaging requirements. Validate the part number against the latest datasheet revision to confirm availability and design recommendations.

Selection Notes

Select this component for applications requiring a wide input voltage range starting at 1.8 V. The adjustable frequency allows optimization for external component size versus efficiency. The configurable duty ratio offers flexibility in output voltage generation compared to fixed-ratio alternatives. Verify that the required switching frequency falls within the supported range of the selected external oscillator resistor.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8337 series distinguishes itself from the S-8338 series by offering a user-configurable maximum duty ratio, whereas the S-8338 series fixes this parameter. Both share similar core architectures including reference voltage circuits and error amplifiers.

Replacement Considerations

The S-8337ABEC-T8T1G serves as a functional substitute within the same series, sharing identical control logic and feature sets. Differences primarily involve the physical package type, with the replacement utilizing TSSOP-8 instead of SON-8. Electrical characteristics remain consistent between these variants.