S-8337ABAA-T8T1G

Overview

The S-8337ABAA-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 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 includes under-voltage lockout and timer latch short-circuit protection circuits, housed in an 8-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 codes against the official datasheet to ensure correct configuration parameters. Confirm that the ordering suffix corresponds to the required electrical characteristics and packaging type. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity and current availability status before procurement.

Selection Notes

Select this component when designing boost converter circuits requiring low minimum operating voltage and high-frequency operation. Ensure external components match the requirements for setting the desired oscillation frequency and duty ratio. Verify compatibility with the target application's voltage range and thermal constraints within the specified operating temperature limits.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for applications requiring efficient power management in portable devices. The S-8337 variant specifically allows user-defined maximum duty ratios, distinguishing it from the fixed-duty S-8338 series.

Replacement Considerations

Public confirmed substitute part numbers are not available.