S-8337ACFA-P8T1G

Overview

The S-8337ACFA-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates within a supply voltage range of 1.8 V to 6 V and supports an internal oscillation frequency up to 1.134 MHz. The device utilizes pulse width modulation (PWM) control with a maximum duty ratio of 0.89. It features a timer latch short-circuit protection circuit and under-voltage lockout (UVLO). The component is housed in an 8-SON package measuring 2.9x2.8 mm and functions within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Includes timer latch short-circuit protection and under-voltage lockout circuits for enhanced reliability.
• Allows external adjustment of oscillation frequency via the ROSC pin and maximum duty ratio via the RDuty pin.

Applications

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

Procurement Notes

Verify the specific suffix P8T1G against the manufacturer's current datasheet to confirm package dimensions and marking details. Ensure compatibility with the required input voltage range and switching frequency settings before integration. Confirm RoHS compliance status through official documentation as regulatory requirements may evolve over time.

Selection Notes

Select this controller when designing boost converters requiring high-frequency operation up to 1.134 MHz. It is suitable for applications needing adjustable duty cycles and robust protection features. Consider the 8-SON package size for space-constrained portable designs. Verify that the external components match the specified compensation and timing requirements.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for low-voltage applications, offering flexibility in setting oscillation frequencies and duty ratios. It shares core architectural similarities with other members of the family but differs in packaging and specific electrical characteristics defined by the part number suffix.

Replacement Considerations

Direct substitutes include other S-8337 series variants such as S-8337ACAA-P8T1G or S-8337AADC-P8T1, provided the package type and electrical parameters align with the design requirements. Cross-referencing the specific suffix codes is essential to ensure functional equivalence.