S-8338ACEA-P8T1G

Overview

The S-8338ACEA-P8T1G 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 supports a maximum oscillation frequency of 1.133 MHz via an external resistor on the ROSC pin. The device features a fixed maximum duty ratio of 88% and utilizes pulse width modulation (PWM) control. It includes an under-voltage lockout circuit and a timer latch short-circuit protection circuit with adjustable delay time via the CSP pin. The IC is housed in an 8-SON package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for compact power supply designs.
• Features adjustable phase compensation and gain values through external components connected to the CC pin.
• Includes a timer latch short-circuit protection circuit with programmable delay time settings.

Applications

• Power supplies for LCD panels
• Portable systems operating on low voltage sources

Procurement Notes

Verify the specific suffix 'P8T1G' corresponds to the 8-SON(A) package variant when sourcing. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the ordering information matches the exact part number to avoid discrepancies in package type or electrical characteristics compared to other series variants.

Selection Notes

Select this component for applications requiring a fixed 88% duty ratio rather than the adjustable duty cycle found in the S-8337 series. It is suitable for designs needing high-frequency operation up to 1.2 MHz to minimize passive component size. Verify that the required output voltage can be achieved using external setting resistors given the fixed internal parameters.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. While sharing core architecture with the S-8337 series, the S-8338 variant distinguishes itself by fixing the maximum duty ratio at 88%, whereas the S-8337 allows adjustment via an external resistor. Both share similar input ranges and protection features.

Replacement Considerations

The S-8337AADC-P8T1G is a related series member but offers adjustable maximum duty ratios instead of the fixed 88% provided by the S-8338 series. Direct substitution requires evaluating if the fixed duty cycle meets the specific application requirements.