S-8337AAFC-P8T1G

Overview

The S-8337AAFC-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates with a minimum input voltage of 1.8 V and supports an internal oscillation frequency up to 1.133 MHz via an external resistor on the ROSC pin. The device utilizes PWM control, with a maximum duty ratio adjustable through an external resistor on the RDuty pin. Phase compensation and gain are configurable using components connected to the CC pin. It features under-voltage lockout (UVLO) and timer latch short-circuit protection, packaged in an 8-SON format.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Supports low-voltage operation starting at 1.8 V, suitable for portable systems.
• Allows flexible configuration of switching frequency, maximum duty ratio, and phase compensation via external passive components.

Applications

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

Procurement Notes

Verify the specific suffix P8T1G against official documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with required input voltage ranges and external component values for frequency and duty cycle settings. Confirm RoHS compliance status and lead-free requirements prior to ordering.

Selection Notes

Select this controller when designing boost converters requiring adjustable switching frequencies up to 1.2 MHz and customizable duty cycles. Consider the 1.8 V minimum operating voltage for battery-powered applications. Evaluate external component requirements for ROSC, RDuty, and CC pins to meet stability and transient response needs.

Part Context

Part of 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-adjustable maximum duty ratios, whereas the S-8338 fixes this parameter. Both share similar core architectures including UVLO and short-circuit protection circuits.

Replacement Considerations

S-8337AAGB-T8T1G and S-8337ACDC-T8T1G are documented variants within the same series. Verify pinout compatibility and specific electrical parameter differences before substitution.