S-8338AAAA-T8T1G

Overview

The S-8338AAAA-T8T1G is a CMOS step-up switching regulator controller from the S-8338 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 fixed at 88%. The device incorporates under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, and PWM controller
• Features under-voltage lockout (UVLO) for stable operation
• Includes timer latch short-circuit protection circuit
• Supports adjustable internal oscillation frequency

Applications

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

Procurement Notes

Verify the specific suffix code against official documentation to confirm exact electrical characteristics, as variations exist within the S-8338 family. Ensure compatibility with required input voltage ranges and packaging specifications before integration into designs.

Selection Notes

Select this component when a low minimum operating voltage of 1.8 V is required for boost applications. Consider the fixed maximum duty ratio characteristic of the S-8338 series compared to the adjustable options in the S-8337 series. Verify that the 1.133 MHz frequency limit meets system noise and efficiency requirements.

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 processes to support low-voltage portable electronics. The S-8338 variant specifically features a fixed maximum duty ratio, distinguishing it from the S-8337 which allows duty ratio adjustment via external resistors.

Replacement Considerations

S-8338ABEC-T8T1G

FAQ

How is the oscillation frequency determined?

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

What protection features are included?

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