S-8337AAGB-P8T1G

Overview

The S-8337AAGB-P8T1G 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 components on the CC pin. The device includes under-voltage lockout and timer latch short-circuit protection circuits.

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 P8T1G against official datasheets to confirm package type and tape-and-reel specifications. Ensure compatibility with required operating temperatures and input voltage ranges. Confirm RoHS compliance status for the specific manufacturing batch. Validate that the adjustable frequency and duty cycle settings align with target circuit requirements before procurement.

Selection Notes

Select this component when a low minimum operating voltage of 1.8 V is required for portable applications. Choose the S-8337 variant over the S-8338 if external adjustment of the maximum duty ratio is necessary. Ensure the design accommodates the external resistors and capacitors needed for frequency setting, duty cycle control, and phase compensation.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for step-up applications requiring low voltage operation. The S-8337 distinguishes itself from the S-8338 by allowing user-defined maximum duty ratios, whereas the S-8338 has a fixed maximum duty ratio.

Replacement Considerations

S-8337ABEC-T8T1G: Similar TSSOP-8 package but different form factor than P8T1G. S-8337ACDC-T8T1G: Alternative in TSSOP-8. Verify package dimensions and pinout compatibility carefully.