S-8338AABB-P8T1G

Overview

The S-8338AABB-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 fixed maximum duty ratio of 88.5%. It features a reference voltage accuracy of ±1.5% at 1.0 V and includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-SON package.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection for enhanced system reliability
• Allows adjustable phase compensation and gain via external RC components connected to the CC pin
• Supports programmable internal oscillation frequency up to 1.133 MHz using an external resistor

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltage sources
• Step-up DC-DC converter designs requiring high-frequency PWM control

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON(A) package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or recent product change notifications, as environmental certifications may vary by production batch. Ensure the ordering quantity aligns with the manufacturer's standard reel packaging requirements.

Selection Notes

Select this component for applications requiring a fixed maximum duty ratio of approximately 88%, distinguishing it from the S-8337 series which offers adjustable duty ratios. Consider the S-8338 series if the design requires fixed timing characteristics without the need for external duty cycle adjustment resistors. Verify that the required output voltage can be achieved using external setting resistors given the fixed internal reference.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers manufactured by ABLIC Inc. The series is designed for low-voltage operation, making it suitable for battery-powered portable devices. The S-8338 variant specifically provides a fixed maximum duty ratio, whereas the S-8337 variant allows for variable duty ratio control via external components.

Replacement Considerations

The S-8337AAHA-T8T1G serves as a functional alternative within the same series, offering similar step-up regulation capabilities but with an adjustable maximum duty ratio controlled by an external resistor rather than a fixed value.