S-8338AAFC-P8T1G

Overview

The S-8338AAFC-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 utilizes pulse width modulation (PWM) control with a maximum duty ratio of 88.5%. It features under-voltage lockout (UVLO) and timer latch short-circuit protection, operating across a temperature range of -40°C to +85°C in an 8-SON package.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection for enhanced operational safety.
• Supports high-frequency operation up to 1.133 MHz using an external oscillator resistor.
• Enables flexible duty cycle adjustment through external resistance connections.

Applications

• Power supply circuits for LCD displays
• Portable electronic systems requiring low voltage operation
• Step-up DC/DC converter designs

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package variant when sourcing. Confirm RoHS compliance status as indicated in official documentation. Ensure compatibility with the required operating temperature range of -40°C to +85°C for your application environment before finalizing procurement.

Selection Notes

Select this component for applications requiring a wide input voltage range starting at 1.8 V. The internal oscillator allows frequency customization via external resistors, offering design flexibility. Consider the 8-SON package size for compact board layouts where space efficiency is critical for portable devices.

Part Context

This part belongs to the S-8337/8338 Series of step-up switching regulators designed for low-voltage portable systems. The S-8338 variant specifically distinguishes itself by allowing the maximum PWM duty ratio to be controlled externally, unlike the fixed-duty S-8337 series. Both share core architecture including reference voltage and error amplifier circuits.

Replacement Considerations

The S-8337AADC-P8T1G serves as a related alternative within the same family, though it lacks the adjustable maximum duty ratio feature found in the S-8338 series. Verify functional equivalence regarding duty cycle requirements before substitution.