S-8338AADB-T8T1G

Overview

The S-8338AADB-T8T1G is a CMOS step-up switching regulator controller from the S-8338 series 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 device features a fixed maximum duty ratio of 88% and includes 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, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Includes under-voltage lockout and timer latch short-circuit protection for enhanced operational safety.
• Allows adjustment of phase compensation and gain values through external resistors and capacitors.

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 configuration. Confirm RoHS compliance status and check for any product change notifications or obsolescence notices prior to procurement. Ensure the ordering quantity aligns with manufacturer packaging standards.

Selection Notes

Select this component when a fixed maximum duty ratio is required for the boost converter topology. Consider the S-8337 series if variable maximum duty ratio control via an external resistor is necessary instead of the fixed setting provided by the S-8338 series.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. These devices are designed as CMOS step-up regulators suitable for applications requiring low minimum operating voltages and flexible frequency settings.

Replacement Considerations

S-8338ABEC-T8T1G

FAQ

How is the internal oscillation frequency adjusted?

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.