S-8338AAGC-T8T1G

Overview

The S-8338AAGC-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 device features a fixed maximum duty ratio of 88% and supports an internal oscillation frequency adjustable up to 1.133 MHz via an external resistor. Packaged in an 8-pin TSSOP, it integrates under-voltage lockout and timer latch short-circuit protection circuits for reliable operation.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, and PWM controller within a single CMOS chip.
• Includes built-in under-voltage lockout and timer latch short-circuit protection mechanisms.
• Features a fixed maximum duty ratio specifically designed for the S-8338 series topology.

Applications

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

Procurement Notes

Verify the specific suffix 'GC' against official datasheets to confirm pinout and electrical tolerances, as variations exist within the S-8338 family. Confirm RoHS compliance status through current manufacturer documentation. Ensure the component matches the required 8-TSSOP package dimensions for PCB layout compatibility.

Selection Notes

Select this component when a fixed 88% duty ratio is required rather than the adjustable ratio found in the S-8337 series. It is suitable for designs needing a wide input voltage range down to 1.8 V. Consider the need for external phase compensation components connected to the CC pin to ensure stability.

Part Context

This part belongs to the S-8338 series of high-frequency PWM control switching regulator controllers. It shares core architecture with the S-8337 series but differs in having a fixed maximum duty ratio instead of an externally adjustable one. Both series target low-voltage portable applications requiring efficient step-up regulation.

FAQ

How is the oscillation frequency determined?

The internal oscillation frequency is set by connecting a resistor to the ROSC pin, allowing adjustment up to 1.133 MHz.

What protection features are included?

The device includes an under-voltage lockout circuit and a timer latch short-circuit protection circuit.