S-8337ACIA-P8T1G

Overview

The S-8337ACIA-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series, designed for low-voltage portable systems. 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 features adjustable maximum duty ratio through the RDuty pin and configurable phase compensation using components connected to the CC pin. Packaged in an 8-SON (A) format measuring 2.9x2.8 mm, it integrates reference voltage, error amplifier, PWM controller, UVLO, and short-circuit protection circuits.

Feature Summary

• Integrates under voltage lockout and timer latch short-circuit protection circuits for enhanced system reliability
• Allows flexible configuration of internal oscillation frequency up to 1.133 MHz via external resistor settings
• Provides adjustable maximum duty ratio control through external resistor connection for optimized power conversion

Applications

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

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number with official ABLIC documentation. Confirm that the specific suffix indicates the correct package type and tape/reel specifications. Ensure compliance with RoHS standards as indicated in the product datasheet. Check for any recent product change notifications regarding material or manufacturing process updates before finalizing procurement orders.

Selection Notes

Select this controller when designing boost converters requiring a minimum operating voltage of 1.8 V. Choose based on the need for externally adjustable switching frequency and duty ratio limits. Consider the 8-SON package size constraints for compact portable applications. Evaluate the requirement for integrated protection features such as UVLO and short-circuit detection in the target power management architecture.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is characterized by its ability to operate at low input voltages, making it suitable for battery-powered devices. The S-8337 variant specifically allows for user-defined maximum duty ratios, distinguishing it from the fixed-duty S-8338 series.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs if considering alternative models from the same manufacturer family.