S-8337ACFA-T8T1G

Overview

The S-8337ACFA-T8T1G 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 on the ROSC pin. The maximum duty ratio is configurable through an external resistor connected to the RDuty pin. Phase compensation and gain are adjusted using components on the CC pin. The device includes under-voltage lockout and timer latch short-circuit protection circuits.

Feature Summary

• Configurable PWM maximum duty ratio via external resistor
• Adjustable internal oscillation frequency up to 1.133 MHz
• Integrated under-voltage lockout and short-circuit protection

Applications

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

Procurement Notes

Verify the specific suffix against official datasheets to confirm exact electrical characteristics, as variations exist within the S-8337 family. Confirm package type and RoHS compliance status with the manufacturer before procurement. Ensure design compatibility with required switching frequencies and duty cycle settings.

Selection Notes

Select this component when designing boost converters requiring flexible duty cycle control and high-frequency operation. Verify that the external component values for frequency setting and phase compensation meet stability requirements. Check if the fixed duty ratio variant is sufficient for the application to simplify design.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for low-voltage applications, featuring a minimum operating voltage of 1.8 V. It integrates essential protection features and allows for external adjustment of key parameters to optimize performance in space-constrained portable electronics.

Replacement Considerations

S-8337ABFA-T8T1G, S-8337AAFC-T8T1G, S-8337AAEA-T8T1G, S-8337ACDC-T8T1G, S-8337ACCC-T8T1G, S-8337ABEC-T8T1G, S-8337AAHA-T8T1G.