S-8338ABFB-P8T1G

Overview

The S-8338ABFB-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates with a minimum input voltage of 1.8 V and supports an external supply voltage range of 1.8 V to 6 V. The device utilizes pulse width modulation (PWM) control and features an adjustable internal oscillation frequency up to 1.133 MHz via an external resistor. Packaged in an 8-SON format, it integrates under-voltage lockout and short-circuit protection circuits for reliable operation.

Feature Summary

• Integrates PWM control circuitry with adjustable high-frequency oscillation
• Includes built-in under-voltage lockout and timer latch short-circuit protection
• Supports low-voltage operation starting at 1.8 V input
• Designed for compact surface-mount applications

Applications

• Power supplies for LCD panels
• Portable electronic systems operating on low voltage
• Step-up DC-DC converter designs requiring compact form factors

Procurement Notes

Verify the specific output voltage setting associated with the ABFB suffix against the official datasheet before procurement. Confirm that the 8-SON package dimensions match the target PCB footprint. Ensure compatibility with the required switching frequency settings defined by the external oscillator resistor.

Selection Notes

Select this component when a low minimum operating voltage of 1.8 V is required for step-up conversion. The adjustable frequency capability allows optimization for efficiency or component size. Verify that the application does not require synchronous rectification, as this model lacks that feature.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is characterized by its ability to operate from low input voltages, making it suitable for battery-powered or low-voltage rail applications where standard regulators cannot function effectively.

Replacement Considerations

S-8338AAIA-T8T1G and S-8338ACCC-T8T1G are documented members of the same S-8338 series. Verify pinout and electrical specifications against the datasheet to ensure functional equivalence before substitution.