S-8338ACEC-P8T1G

Overview

The S-8338ACEC-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates within a supply 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 device features a fixed maximum duty ratio of 88% and includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. It is housed in an 8-SON package.

Feature Summary

• Integrates PWM control with adjustable high-frequency oscillation for compact power designs
• Includes built-in under-voltage lockout and short-circuit protection mechanisms
• Supports low-voltage operation starting at 1.8 V for portable applications

Applications

• Power supplies for LCD panels
• Portable systems operating on low voltage
• Step-up DC-DC converter controllers

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package configuration. Confirm RoHS compliance status through official documentation. Check for obsolescence notices as some S-8338 variants are marked not recommended for new designs. Ensure the supplier provides valid traceability data.

Selection Notes

Select this component when a fixed 88% duty ratio is required, distinguishing it from the S-8337 series which allows variable duty ratio adjustment. Choose based on the need for a small 8-SON footprint compared to TSSOP options. Verify that the external component values align with the desired switching frequency and phase compensation requirements.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically differentiates itself by fixing the maximum duty ratio, whereas the S-8337 series offers adjustable duty ratios via external resistors. Both share similar core architectures and protection features.

Replacement Considerations

S-8338ABEC-T8T1G shares the same series functionality but uses a TSSOP-8 package instead of 8-SON. S-8338ACDC-P8T1G is another 8-SON variant within the same family. Verify pin compatibility and thermal performance when substituting between package types.