S-8338AAAC-P8T1G

Overview

The S-8338AAAC-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(A) package measuring 2.9 x 2.8 mm and is rated for operation between -40°C and 85°C.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, PWM controller, and UVLO within a single CMOS chip.
• Provides timer latch short-circuit protection to enhance system reliability during fault conditions.
• Allows adjustment of phase compensation and gain values through external components connected to the CC pin.

Applications

• Power supply circuits for LCD displays
• Portable electronic systems operating on low voltages

Procurement Notes

Verify the specific suffix P8T1G corresponds to the 8-SON(A) package configuration when sourcing. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure design-in compatibility with the fixed 88% duty cycle limitation inherent to the S-8338 series architecture.

Selection Notes

Select this component for applications requiring a compact footprint and low minimum operating voltage. The fixed duty ratio distinguishes it from the S-8337 series, which allows variable duty control. Designers must account for the specific frequency setting requirements imposed by the external ROSC resistor.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for efficient power management in portable devices. The S-8338 variant specifically fixes the maximum duty ratio at 88%, differing from the adjustable duty cycle options available in the S-8337 counterpart.

Replacement Considerations

S-8337AADC-P8T1G: Compatible alternative offering adjustable maximum duty ratio instead of the fixed 88% limit found in the S-8338 series. Verify package and pinout compatibility before substitution.