S-8338ABAA-T8T1G

Overview

The S-8338ABAA-T8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates within a supply voltage range of 1.8 V to 6 V and supports an internal oscillation frequency up to 1.133 MHz, adjustable via an external resistor on the ROSC pin. The device features a fixed maximum duty ratio of 88% and utilizes pulse width modulation (PWM) control. It includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component 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 system reliability.
• Allows adjustment of phase compensation and gain through external resistor and capacitor connections.

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 package type and electrical characteristics. Confirm RoHS compliance status and check for any product change notifications or obsolescence warnings before finalizing procurement plans.

Selection Notes

Select this controller when designing boost converters requiring low minimum operating voltage and high-frequency operation. Ensure external components match the required oscillation frequency and duty cycle specifications. Verify that the thermal performance of the TSSOP-8 package suits the application environment.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically distinguishes itself with a fixed maximum duty ratio, unlike the S-8337 series which allows duty ratio adjustment via an external resistor.

Replacement Considerations

S-8338ACGA-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.