S-8338AAEA-T8T1G

Overview

The S-8338AAEA-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. The component is 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 adjustable phase compensation and gain via external RC components connected to the CC pin.

Applications

• Power supply systems for LCD displays
• Portable electronic devices requiring low-voltage operation
• General-purpose DC-DC boost converter designs

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm exact electrical tolerances and package variations. Ensure compatibility with required operating temperatures and input voltage ranges before integration. Cross-reference the datasheet revision history for any recent material or design changes that may impact performance specifications.

Selection Notes

Select this controller when a low minimum operating voltage of 1.8 V is required for portable applications. Choose the S-8338 series over the S-8337 series if a fixed maximum duty ratio is preferred over adjustable duty cycle control. Consider the TSSOP-8 package for surface-mount assembly requirements and verify external component values for desired frequency and stability settings.

Part Context

This component belongs to the S-8337/8338 Series, which are high-frequency PWM control switching regulator controllers designed for low-voltage applications. The S-8338 variant specifically distinguishes itself by featuring a fixed maximum duty ratio, whereas the S-8337 allows for adjustable duty ratios via external resistors. Both series share similar internal architectures including UVLO and short-circuit protection.

Replacement Considerations

S-8338ABEC-T8T1G and S-8338ACGA-T8T1G are confirmed substitutes within the same series offering identical functional characteristics and package types.