S-8337ACEC-T8T1G

Overview

The S-8337ACEC-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 supports a maximum oscillation frequency of 1.133 MHz via an external resistor on the ROSC pin. The device utilizes pulse width modulation (PWM) control with a maximum duty ratio adjustable through an external resistor connected to the RDuty pin. Phase compensation and gain are configurable using external components on the CC pin. It features under-voltage lockout (UVLO) and timer latch short-circuit protection, packaged in an 8-TSSOP housing.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection.
• Allows internal oscillation frequency setting up to 1.133 MHz via external resistor.
• Enables adjustable maximum PWM duty ratio through external resistor connection.
• Supports operation stability adjustment via external phase compensation components.

Applications

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

Procurement Notes

Verify the specific suffix codes against official documentation to confirm exact electrical characteristics and package variations. Confirm RoHS compliance status and environmental declarations prior to integration. Ensure design compatibility with the specified 8-TSSOP footprint and thermal requirements. Cross-reference datasheet revisions to validate current manufacturing specifications.

Selection Notes

Select this component when designing boost converter circuits requiring low minimum operating voltage and high-frequency PWM control. Consider the adjustable duty ratio and frequency settings for optimizing transient response and efficiency. Verify that external passive component values align with the required phase compensation and timing configurations specified in the technical data.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency step-up switching regulator controllers. The series is designed for applications demanding low voltage operation and compact power solutions. It shares core architectural features with sibling models, differing primarily in fixed versus adjustable parameters such as maximum duty ratio and frequency limits.

Replacement Considerations

S-8337ACCC-T8T1G

FAQ

How is the maximum duty ratio controlled in the S-8337 series?

The maximum duty ratio of PWM control is adjustable by connecting a resistor to the RDuty pin.

What protection features are included in the S-8337 controller?

The device includes an under-voltage lockout circuit (UVLO) and a timer latch short-circuit protection circuit.