S-8337ABEC-T8T1G

Overview

The S-8337ABEC-T8T1G is a CMOS step-up switching regulator controller from the S-8337 series, manufactured 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-TSSOP package.

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 system power supplies.
• Allows flexible configuration of switching frequency and maximum duty ratio via external resistors.

Applications

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

Procurement Notes

Verify the specific suffix codes against the official datasheet to ensure correct electrical characteristics. Confirm that the component matches the required TSSOP-8 package dimensions and RoHS compliance status. Check manufacturer documentation for any recent design changes or material updates before finalizing procurement specifications.

Selection Notes

Select this controller when designing boost converters requiring adjustable switching frequencies up to 1.2 MHz. It is suitable for applications needing customizable duty ratios via external resistors. Ensure the design accounts for the phase compensation requirements using the CC pin components to maintain stability.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for CMOS step-up applications, offering flexibility in frequency and duty cycle settings compared to fixed-parameter alternatives within the same product line.

Replacement Considerations

S-8337AAEB-T8T1G, S-8337AAHA-T8T1G, S-8337AAHB-T8T1G, S-8337ACGB-T8T1G, S-8337AAFC-T8T1G