S-8338ACBB-P8T1G

Overview

The S-8338ACBB-P8T1G is a CMOS step-up switching regulator controller from ABLIC Inc., designed for portable systems and LCD power supplies. It operates within an input voltage range of 1.8 V to 6 V and supports a maximum oscillation frequency of 1.134 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 built-in under-voltage lockout (UVLO), timer latch short-circuit protection, and current limit functions. The component is housed in an 8-SON(A) package measuring 2.9 x 2.8 mm and is rated for operation between -40°C and +85°C.

Feature Summary

• Integrates PWM control with adjustable internal oscillation frequency up to 1.134 MHz
• Includes timer latch short-circuit protection and under-voltage lockout circuits
• Supports low-voltage operation starting at 1.8 V input

Applications

• Power supply for liquid crystal displays (LCD)
• Portable electronic systems requiring low input voltage
• Step-up DC/DC converter designs

Procurement Notes

Verify the specific output voltage setting associated with the ACBB suffix against the official datasheet before procurement. Confirm that the 8-SON(A) package dimensions align with the target PCB footprint. Ensure the selected external components support the required operating frequency and current limits defined in the technical specifications.

Selection Notes

Select this component when a compact boost controller is needed for low-voltage applications. The fixed frequency capability simplifies filter design compared to variable frequency alternatives. Consider the 8-SON(A) package size constraints and verify thermal performance requirements for the intended load conditions.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulators. The series is characterized by its ability to operate from very low input voltages, making it suitable for battery-powered devices. The S-8338 variant specifically offers a higher maximum duty ratio compared to the S-8337 series.

Replacement Considerations

S-8338ABEA-P8T1G and S-8338AADB-P8T1G are documented members of the same S-8338 series with identical 8-SON(A) packaging.