S-8337ACHB-T8T1G

Overview

The S-8337ACHB-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 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-TSSOP package.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, PWM controller, UVLO, and timer latch short-circuit protection.
• Supports low-voltage operation with a minimum operating voltage of 1.8 V.
• Allows flexible configuration of switching frequency and maximum duty ratio via external resistors.

Applications

• Power supply for LCD panels
• Portable systems requiring low voltage operation

Procurement Notes

Verify component authenticity against official ABLIC documentation before integration. Confirm that the specific suffix matches required electrical characteristics. Check for recent Product Change Notifications regarding material or marking updates. Ensure compatibility with existing PCB footprint and thermal management requirements.

Selection Notes

Select this controller when designing boost converters requiring adjustable switching frequencies up to 1.2 MHz. Suitable for applications needing customizable duty cycles via external resistors. Consider the 8-TSSOP package for surface-mount assembly constraints. Verify that the 1.8 V minimum input voltage aligns with the system's power source capabilities.

Part Context

This component belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. The series is designed for efficient power management in portable electronics. The S-8337 variant specifically offers user-adjustable maximum duty ratios, distinguishing it from the fixed-duty S-8338 series.

Replacement Considerations

S-8337ABEC-T8T1G and S-8337ACDC-T8T1G are functionally equivalent parts within the same series offering identical core specifications and package types.