S-8338ACAA-T8T1G

Overview

The S-8338ACAA-T8T1G 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 utilizes pulse width modulation (PWM) control. The internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor on the ROSC pin. This specific variant features a fixed maximum duty ratio of 88%. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection circuits for enhanced reliability.
• Allows phase compensation and gain adjustment through external RC components connected to the CC pin.
• Supports low-voltage operation starting at 1.8 V, suitable for portable systems.

Applications

• Power supply units for LCD panels
• Portable electronic devices requiring low voltage operation

Procurement Notes

Verify the exact suffix against official datasheets to confirm pinout and electrical characteristics. Ensure compatibility with the required switching frequency and duty cycle constraints. Confirm RoHS compliance status and packaging specifications before finalizing orders.

Selection Notes

Select this component when a fixed 88% maximum duty ratio is required for boost applications. Choose based on the need for high-frequency operation up to 1.133 MHz and low minimum operating voltage. Compare with the S-8337 series if variable duty ratio control is needed instead.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed for step-up applications using CMOS technology. The S-8338 variant specifically distinguishes itself by having a fixed maximum duty ratio, unlike the S-8337 which allows external adjustment.

Replacement Considerations

The S-8337ACAA-T8T1G is a functional substitute within the same series but offers variable maximum duty ratio control rather than the fixed 88% ratio found in the S-8338ACAA-T8T1G. Verify circuit stability when substituting due to differences in duty cycle limits.