S-8338ABEB-T8T1G

Overview

The S-8338ABEB-T8T1G is a CMOS step-up switching regulator controller from the S-8338 series, manufactured 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%. The device includes an under-voltage lockout circuit and a timer latch short-circuit protection circuit. 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 a low minimum operating voltage of 1.8 V suitable for portable systems.
• Includes built-in under-voltage lockout and timer latch short-circuit protection circuits.

Applications

• Power supply for LCD modules
• Portable electronic systems requiring low voltage operation

Procurement Notes

Verify the exact suffix against official ABLIC documentation to confirm package type and electrical characteristics. Confirm RoHS compliance status through current datasheets. Ensure ordering quantities align with manufacturer standard packaging requirements. Check for any recent product change notifications or design revisions that may affect compatibility.

Selection Notes

Select this component when a fixed maximum duty ratio is required for the boost converter topology. Consider the S-8337 series if variable maximum duty ratio control via an external resistor is necessary instead. Evaluate the need for adjustable oscillation frequency capabilities using the ROSC pin. Verify thermal performance requirements for the TSSOP-8 package in the target application environment.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The series is designed as a CMOS step-up switching regulator consisting of essential internal circuits including reference voltage, oscillator, error amplifier, and protection mechanisms. The S-8338 variant specifically distinguishes itself by having a fixed maximum duty ratio compared to the adjustable duty ratio of the S-8337 series.

Replacement Considerations

S-8337ABEC-T8T1G: Similar package and functionality but allows variable maximum duty ratio control via the RDuty pin rather than being fixed at 88%.