S-8338ACEC-T8T1G

Overview

The S-8338ACEC-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. The device features a fixed maximum duty ratio of 88% and includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Features timer latch short-circuit protection circuit for enhanced system safety.
• Supports adjustable oscillation frequency up to 1.133 MHz via external resistor configuration.
• Includes under-voltage lockout (UVLO) circuit to ensure stable operation at low input voltages.

Applications

• Power supply for LCD panels
• Portable systems operating on low voltage
• Step-up DC-DC converter designs

Procurement Notes

Verify the specific suffix 'EC' against the official datasheet to confirm pinout and electrical characteristics, as variations exist within the S-8338 family. Confirm RoHS compliance status and check for any Product Change Notifications (PCN) regarding material or manufacturing updates before finalizing procurement specifications.

Selection Notes

Select this component when a fixed maximum duty ratio of 88% is required for the boost topology. Ensure the application design accommodates the adjustable frequency range up to 1.133 MHz and provides appropriate compensation components on the CC pin for stability. Verify that the load current requirements are met by the external switch transistor driven by this controller.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. The S-8338 variant is distinguished by its fixed maximum duty ratio, whereas the S-8337 series allows for adjustable duty ratios via an external resistor. Both series share similar core architectures including UVLO and short-circuit protection.

Replacement Considerations

S-8338ACCB-T8T1G and S-8338ABEC-T8T1G are functionally equivalent parts within the same series offering identical boost control features and package options.