S-8338AAEC-T8T1G

Overview

The S-8338AAEC-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 with a fixed maximum duty ratio of 88%. The internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor on the ROSC pin. Phase compensation and gain are configurable through external components connected to the CC pin. The device includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits, housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection.
• Supports low-voltage operation starting at 1.8 V for portable applications.
• Features adjustable internal oscillation frequency up to 1.133 MHz.
• Includes timer latch short-circuit protection circuit.

Applications

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

Procurement Notes

Verify the specific suffix codes against the official datasheet to confirm package type and temperature range. Ensure compatibility with external component values for frequency setting and phase compensation. Confirm RoHS compliance status as per the latest manufacturer documentation before integration.

Selection Notes

Select this controller for designs requiring high-frequency step-up conversion with low minimum input voltage. The fixed 88% duty ratio distinguishes it from the S-8337 series, which allows variable duty ratio control. External resistors and capacitors must be selected to set the desired switching frequency and ensure loop stability.

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 variant offers adjustable duty ratio control. Both series share similar core architectures including UVLO and short-circuit protection mechanisms.

Replacement Considerations

S-8337ABEC-T8T1G: Similar architecture but features adjustable maximum duty ratio instead of fixed 88%. Verify if variable duty cycle control is required for the application design.