S-8337ACAC-P8T1G

Overview

The S-8337ACAC-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates within an input voltage range of 1.8 V to 6 V and utilizes pulse width modulation (PWM) control. The device features an internal oscillator with a frequency settable up to 1.133 MHz via an external resistor on the ROSC pin. Maximum duty ratio is adjustable through an external resistor connected to the RDuty pin. Phase compensation and gain are configurable using external components on the CC pin. It includes under-voltage lockout and timer latch short-circuit protection circuits.

Feature Summary

• Supports high-frequency PWM operation with externally adjustable oscillation frequency up to 1.133 MHz
• Features adjustable maximum duty ratio via external resistor connection for flexible output control
• Incorporates under-voltage lockout and timer latch short-circuit protection for enhanced reliability

Applications

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

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package variant when sourcing. Confirm RoHS compliance status as indicated in official documentation. Ensure ordering quantities align with manufacturer standard packaging requirements. Cross-reference the full part number against distributor databases to confirm current availability and lead times prior to procurement planning.

Selection Notes

Select this component when designing boost converter applications requiring low minimum operating voltage down to 1.8 V. Choose the S-8337 variant over the S-8338 if adjustable maximum duty ratio is required rather than a fixed setting. Consider the 8-SON package for compact surface-mount designs. Verify that external passive component values meet the phase compensation and frequency setting requirements specified in the datasheet.

Part Context

This part belongs to the S-8337/8338 series of high-frequency step-up switching regulator controllers. The series is designed for portable electronics and low-voltage power applications. The S-8337 model specifically allows for user-defined maximum duty ratios, distinguishing it from the S-8338 which has a fixed maximum duty ratio. Both models share similar core architectures including reference voltage circuits and error amplifiers.

Replacement Considerations

The S-8338ABEC-T8T1G serves as a functional substitute within the same series, though it features a fixed maximum duty ratio instead of the adjustable configuration found in the S-8337ACAC-P8T1G. Designers must verify if the fixed duty ratio meets their application requirements before substituting.