S-8338AADC-T8T1G

Overview

The S-8338AADC-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 supports a maximum oscillation frequency of 1.133 MHz via an external resistor on the ROSC pin. The device utilizes pulse width modulation (PWM) control with a fixed maximum duty ratio of 88%. It features 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, and PWM controller for efficient step-up regulation.
• Includes under-voltage lockout and timer latch short-circuit protection for enhanced operational safety.
• Allows internal oscillation frequency adjustment up to 1.133 MHz through an external resistor.

Applications

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

Procurement Notes

Verify the specific suffix 'T8' corresponds to the TSSOP-8 package configuration required for your design. Confirm RoHS compliance status as indicated in the official datasheet documentation. Ensure the component meets the specified -40°C to +85°C ambient temperature operating range for your intended application environment.

Selection Notes

Select this model when a fixed maximum duty ratio is acceptable, distinguishing it from the S-8337 series which allows adjustable duty ratios. Consider the 1.8 V minimum operating voltage suitability for single-cell battery applications. Verify that the TSSOP-8 package dimensions align with the target PCB layout constraints.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically features a fixed maximum duty ratio, whereas the S-8337 variant offers adjustable duty ratio capabilities via an external resistor. Both series share similar core architectures including UVLO and short-circuit protection mechanisms.

Replacement Considerations

The S-8337AADC-T8T1G serves as a functional alternative within the same series, offering adjustable maximum duty ratio instead of the fixed ratio found in the S-8338 series. Both components utilize the same TSSOP-8 package and share identical input voltage ranges and protection features.