S-8338AAHA-T8T1G

Overview

The S-8338AAHA-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 maximum duty ratio is fixed at 88%. The device includes an error amplifier, under voltage lockout circuit, and timer latch short-circuit protection. 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 low minimum operating voltage suitable for portable systems and LCD power supplies.
• Includes built-in under voltage lockout and timer latch short-circuit protection circuits.

Applications

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

Procurement Notes

Verify the specific suffix AAHA against the official datasheet to confirm the exact output configuration and factory pack quantity. Ensure the ordering suffix matches the required tape and reel specifications. Confirm RoHS compliance status through the manufacturer's current documentation before finalizing procurement orders.

Selection Notes

Select this component when a fixed maximum duty ratio of 88% is required for the boost converter topology. Choose the S-8338 series over the S-8337 series if external adjustment of the maximum duty ratio via the RDuty pin is not needed. Ensure the application requires an adjustable switching frequency up to 1.2 MHz.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. The S-8338 variant specifically distinguishes itself with a fixed maximum duty ratio, whereas the S-8337 series allows for variable duty ratio control. Both share similar internal architectures including UVLO and short-circuit protection mechanisms.

Replacement Considerations

The S-8337 series serves as a functional alternative if adjustable maximum duty ratio is preferred. Verify that the replacement part supports the same 1.8 V to 6 V input range and TSSOP-8 package footprint.