S-8337ABFC-P8T1G

Overview

The S-8337ABFC-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series by ABLIC Inc. It operates within a supply voltage range of 1.8V to 6V and utilizes pulse-width modulation (PWM) control. The device supports an internal oscillation frequency adjustable up to 1.134MHz via an external resistor. It features a maximum duty ratio of 0.89, which is configurable through an external resistor connected to the RDuty pin. The component is housed in an 8-SON package with dimensions of 2.9x2.8mm.

Feature Summary

• Integrates under-voltage lockout and timer latch short-circuit protection circuits for enhanced operational safety.
• Allows adjustment of phase compensation and gain values using external resistors and capacitors to ensure stability.
• Supports low-voltage operation starting at 1.8V, suitable for portable systems.

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltage
• Step-up DC-DC converter designs

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. Check for any product change notifications regarding solder plating or material composition updates before finalizing procurement specifications.

Selection Notes

Select this component when designing boost converters requiring high-frequency PWM control with adjustable duty cycles. Ensure external components match the required oscillation frequency and phase compensation needs. Verify that the input voltage remains within the 1.8V to 6V operational range for proper functionality.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8337 variant specifically allows user-defined maximum duty ratios, distinguishing it from the fixed-duty S-8338 series. Both share similar core architectures including reference voltage circuits and error amplifiers.

Replacement Considerations

S-8337ACFB-P8T1G and S-8337AAEB-P8T1G are confirmed substitutes within the same series offering identical functional characteristics and package types.