S-8338ABDA-P8T1G

Overview

The S-8338ABDA-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates with a minimum input voltage of 1.8 V and supports an internal oscillation frequency up to 1.133 MHz via an external resistor on the ROSC pin. The device features a fixed maximum duty ratio of 88.5% and utilizes pulse width modulation (PWM) control. It includes an under-voltage lockout circuit and a timer latch short-circuit protection circuit. The component is housed in an 8-SON(A) package measuring 2.9x2.8 mm and functions within a supply voltage range of 1.8 V to 6 V.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection.
• Enables operation stability and transient response adjustment through external compensation components.
• Supports low-voltage operation starting at 1.8 V for portable system applications.

Applications

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

Procurement Notes

Verify the specific suffix P8T1G against official documentation to confirm the exact tape-and-reel packaging configuration and quantity per reel. Ensure the ordering code matches the required 8-SON(A) package variant. Cross-reference the manufacturer's latest datasheet for any product change notifications or material updates that may affect compatibility.

Selection Notes

Select this component when a fixed maximum duty ratio is acceptable for the boost converter design. Utilize the ROSC pin to set the desired switching frequency up to 1.133 MHz. Adjust the CC pin components to optimize phase compensation and gain for the specific load requirements. Ensure the input voltage remains above the 1.8 V minimum threshold for proper regulation.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. While the S-8337 series allows duty ratio control via an external resistor, the S-8338 series maintains a fixed maximum duty ratio. Both series share similar internal architectures including UVLO and short-circuit protection circuits designed for efficient power management in compact form factors.

Replacement Considerations

S-8338AAIA-T8T1G

FAQ

How is the switching frequency determined?

The internal oscillation frequency is set externally by connecting a resistor to the ROSC pin, allowing frequencies up to 1.133 MHz.

What protection features are included?

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