S-8337ABAC-P8T1G

Overview

The S-8337ABAC-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-SMD, flat lead package (SON type).

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection.
• Supports low-voltage operation starting at 1.8 V for portable systems.
• Allows user-defined maximum duty ratio via external resistance.
• Enables customizable phase compensation and gain settings.

Applications

• Power supply for LCD modules
• Portable electronic systems operating on low voltage

Procurement Notes

Verify the specific suffix P8T1G against official datasheets to confirm the exact package variant and tape-and-reel specifications. Confirm RoHS compliance status and ensure the component matches the required SON-8 footprint dimensions before integration into the design.

Selection Notes

Select this controller when designing boost converters requiring flexible duty cycle adjustment and high-frequency operation. Ensure external components for the ROSC, RDuty, and CC pins are selected to meet stability requirements and target switching frequencies within the specified operational limits.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. While sharing core architecture with the S-8338 series, the S-8337 variant distinguishes itself by offering adjustable maximum duty ratios, whereas the S-8338 features a fixed maximum duty ratio.

Replacement Considerations

S-8337AAEB-P8T1G and S-8337AADC-P8T1G are documented variants within the same series. Verify package compatibility and parameter alignment before substitution.