S-8338ACDA-P8T1G

Overview

The S-8338ACDA-P8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates with 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 features a fixed maximum duty ratio of 88% 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 package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller within a single CMOS chip
• Provides timer latch short-circuit protection for enhanced system reliability
• Allows adjustment of phase compensation and gain through external RC components

Applications

• Power supply for LCD panels
• Portable electronic systems requiring low voltage operation
• Step-up DC-DC converter designs

Procurement Notes

Verify the specific suffix codes against official documentation to ensure correct package type and electrical characteristics. Confirm RoHS compliance status and manufacturing origin details prior to ordering. Check for any product change notifications that may affect specifications or availability. Ensure compatibility with existing design constraints regarding operating temperature and load requirements.

Selection Notes

Select this component when a fixed 88% duty ratio is required for boost applications. Consider the adjustable transient response capabilities via the CC pin for stability optimization. Evaluate the 1.8 V minimum operating voltage suitability for low-power portable devices. Compare against the S-8337 series if variable duty ratio control is needed instead of a fixed limit.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically distinguishes itself by maintaining a fixed maximum duty ratio, unlike the S-8337 which allows duty ratio adjustment. 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-8338ABAA-P8T1G is a confirmed substitute within the same series offering identical functional parameters.