S-8337AAAB-T8T1G

Overview

The S-8337AAAB-T8T1G is a CMOS step-up switching regulator controller from the S-8337 series by ABLIC Inc. It operates within a supply voltage range of 1.8 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 includes under-voltage lockout and timer latch short-circuit protection, housed in an 8-pin TSSOP package.

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 supply for LCD panels
• Portable systems operating on low voltage

Procurement Notes

Verify the specific suffix AAAB against official datasheets to confirm exact electrical parameters, as variations exist within the S-8337 family. Confirm RoHS compliance status and ensure the 8-TSSOP package matches design requirements. Check for any product change notifications or obsolescence notices prior to finalizing procurement plans.

Selection Notes

Select this component when designing boost converters requiring low minimum operating voltage down to 1.8 V. Ensure external components support the desired switching frequency and duty ratio settings. Verify that the application environment stays within the -40°C to 85°C operating temperature range specified for the device.

Part Context

This part belongs to the S-8337/8338 Series, which are high-frequency PWM control switching regulator controllers. The series is designed for applications needing efficient power conversion at low input voltages. The S-8337 variant specifically allows user-defined maximum duty ratios, distinguishing it from the fixed-duty S-8338 series.

Replacement Considerations

S-8337AAEB-T8T1G and S-8337ACHB-T8T1G are documented members of the same series with identical packaging and core functionality.