S-8337AACB-P8T1G

Overview

The S-8337AACB-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 internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor connected to the ROSC pin. The maximum duty ratio is configurable through an external resistor on the RDuty pin. Phase compensation and gain are adjusted using components connected to the CC pin. The device is housed in an 8-SON package with dimensions of 2.9 mm x 2.8 mm.

Feature Summary

• Features a low minimum operating voltage of 1.8 V suitable for portable systems
• Includes timer latch short-circuit protection circuit
• Allows adjustable maximum duty ratio via external resistor
• Supports phase compensation adjustment for stability

Applications

• Power supply for LCD panels
• Portable electronic systems operating on low voltage
• Step-up DC-DC converter designs requiring high-frequency operation

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package configuration rather than TSSOP variants. Confirm RoHS compliance status as indicated in official documentation. Ensure ordering quantities align with manufacturer standard packaging requirements. Cross-reference the exact part number against the latest datasheet revision to confirm availability and design recommendations.

Selection Notes

Select this component when designing boost converters requiring input voltages as low as 1.8 V. The adjustable frequency feature allows optimization for external component size. Use the RDuty pin to set the maximum duty cycle according to specific output voltage requirements. Ensure proper thermal management for the 8-SON package during continuous operation.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8337 variant distinguishes itself from the S-8338 by offering user-configurable maximum duty ratios, whereas the S-8338 fixes this parameter. Both share similar core architectures including UVLO and error amplifiers.

Replacement Considerations

The S-8338ABEC-T8T1G serves as a functional alternative within the same series, though it features a fixed maximum duty ratio of 88% instead of the adjustable configuration found in the S-8337 series.