S-8337AAIA-T8T1G

Overview

The S-8337AAIA-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 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.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection
• Supports adjustable internal oscillation frequency up to 1.133 MHz via external resistor
• Allows configurable maximum duty ratio through external resistor connection

Applications

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

Procurement Notes

Verify the specific suffix AAIA against official datasheets to confirm exact electrical characteristics, as these define the component's unique parameters. Ensure compatibility with the required TSSOP-8 package and reel packaging specifications. Confirm RoHS compliance status and check for any product change notifications that may affect material composition or manufacturing location before finalizing procurement.

Selection Notes

Select this controller when designing boost converters requiring high-frequency operation up to 1.133 MHz and low minimum operating voltage of 1.8 V. Consider the S-8337 series for applications needing adjustable duty ratios and phase compensation flexibility. Evaluate the need for integrated short-circuit protection and UVLO features in portable or low-voltage power supply designs.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. These devices are designed using high-withstand voltage CMOS process technologies. The series is characterized by its ability to operate at low input voltages, making it suitable for battery-powered and portable electronic applications where efficient step-up conversion is required.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other S-8337 variants if pin-out and electrical parameters match.