S-8338ABCB-P8T1G

Overview

The S-8338ABCB-P8T1G 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 supports a maximum oscillation frequency of 1.133 MHz via an external resistor on the ROSC pin. The device utilizes pulse width modulation (PWM) control with a fixed maximum duty ratio of 88.5%. It features an internal reference voltage accuracy of ±1.5% at 1.0 V and includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-SON package.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection for enhanced system reliability
• Allows adjustment of phase compensation and gain via external RC components
• Supports flexible output voltage setting through external resistors
• Enables customization of short-circuit protection delay time

Applications

• Power supply units for LCD panels
• Portable electronic systems operating on low voltage
• Step-up DC-DC converter designs requiring high-frequency operation

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON package configuration and reel packaging details. Confirm RoHS compliance status and check for any product change notifications or obsolescence notices, as some variants in this series are marked as not recommended for new designs. Ensure the ordering information matches the exact electrical characteristics required for the target application.

Selection Notes

Select this model when a fixed maximum duty ratio is acceptable, distinguishing it from the S-8337 series which allows duty ratio control. Choose based on the requirement for a minimum operating voltage of 1.8 V and the need for adjustable oscillation frequency up to 1.133 MHz. Consider the 8-SON package size constraints and the necessity for external compensation components to optimize transient response.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant is characterized by a fixed maximum duty ratio, whereas the S-8337 series offers variable duty ratio control. Both series share similar core architectures including reference voltage circuits, error amplifiers, and protection mechanisms, designed for efficient power management in portable applications.

Replacement Considerations

S-8338AAIA-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.