S-8337ABAC-T8T1G

Overview

The S-8337ABAC-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 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 is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates under voltage lockout circuitry and timer latch short-circuit protection for enhanced operational safety.
• Supports low-voltage operation starting at 1.8 V, suitable for portable systems.
• Allows flexible configuration of switching frequency, maximum duty ratio, and phase compensation via external passive components.

Applications

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

Procurement Notes

Verify the specific suffix codes against official datasheets to confirm exact electrical characteristics and packaging details. Confirm RoHS compliance status and check for any product change notifications or obsolescence warnings prior to procurement. Ensure compatibility with required thermal management solutions for the TSSOP-8 package.

Selection Notes

Select this component when designing boost converter circuits requiring high-frequency PWM control and adjustable duty cycles. Consider the S-8338 series if a fixed maximum duty ratio is acceptable instead of external adjustment. Evaluate external component requirements for setting the oscillation frequency and ensuring loop stability.

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 compact power solutions with low minimum operating voltages. The S-8337 variant specifically offers user-adjustable parameters for frequency and duty cycle, distinguishing it from fixed-parameter alternatives.

Replacement Considerations

S-8337AAHA-T8T1G

FAQ

How is the internal oscillation frequency determined?

The internal oscillation frequency can be set up to 1.133 MHz by connecting a resistor to the ROSC pin.

What protection features are included?

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