S-8337ABIC-T8T1G

Overview

The S-8337ABIC-T8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured by ABLIC Inc. It operates within a supply 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 external components on the CC pin. The device features under-voltage lockout and timer latch short-circuit protection, packaged in an 8-pin TSSOP.

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 supplies for LCD panels
• Portable systems operating on low voltage
• Step-up DC-DC converter designs

Procurement Notes

Verify the specific suffix against official documentation to confirm exact electrical characteristics and package dimensions. Confirm RoHS compliance status as indicated in current datasheets. Ensure ordering quantities align with manufacturer reel specifications. Cross-reference part numbers with distributor catalogs to verify availability and authenticity before procurement.

Selection Notes

Select this component when designing boost converters requiring low minimum operating voltage and high-frequency operation. The adjustable duty ratio and frequency allow optimization for specific input-output voltage requirements. Consider thermal management and external component selection for stability. Verify compatibility with system voltage levels and load requirements during the design phase.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for applications requiring efficient power conversion from low voltage sources. The S-8337 variant specifically allows user-defined maximum duty ratios, distinguishing it from fixed-duty variants in the same family.

FAQ

How is the maximum duty ratio controlled in the S-8337ABIC-T8T1G?

The maximum duty ratio is controlled by connecting an external resistor to the RDuty pin.

What is the maximum internal oscillation frequency?

The internal oscillation frequency can be set up to 1.133 MHz via a resistor connected to the ROSC pin.