S-8337ABCB-P8T1G

Overview

The S-8337ABCB-P8T1G is a CMOS step-up switching regulator controller from the S-8337 series 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 is housed in an 8-SON package with dimensions of 2.9 mm x 2.8 mm.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection.
• Supports low-voltage operation starting at 1.8 V for portable applications.
• Allows user-defined maximum duty ratio via external resistance.

Applications

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

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package variant rather than the TSSOP version. Confirm RoHS compliance status as some datasheet records indicate varying environmental declarations. Ensure the ordering quantity aligns with manufacturer standard packaging requirements.

Selection Notes

Select this component when designing boost converters requiring flexible duty cycle adjustment. The S-8337 series differs from the S-8338 series by allowing variable maximum duty ratios instead of a fixed limit. Verify that the required switching frequency falls within the adjustable range supported by the selected external resistor values.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for efficiency in low-voltage environments. The S-8337 variant specifically provides programmable duty cycles, distinguishing it from the fixed-duty S-8338 counterpart.

FAQ

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

The maximum duty ratio is controlled by the value of the external resistor connected to the RDuty pin.

What is the minimum operating voltage for this controller?

The minimum operating voltage is 1.8 V.