S-8338AACB-T8T1G

Overview

The S-8338AACB-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 with a fixed maximum duty ratio of 88%. The internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor on the ROSC pin. Phase compensation and gain are configurable through external components connected to the CC pin. The device is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, PWM controller, UVLO, and short-circuit protection.
• Features a low minimum operating voltage suitable for portable systems.
• Allows external adjustment of oscillation frequency and phase compensation.

Applications

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

Procurement Notes

Verify the specific suffix AACB against official documentation to confirm pinout and electrical characteristics, as variations exist within the S-8338 family. Ensure compatibility with required switching frequencies and duty cycle constraints. Confirm RoHS compliance status and packaging details prior to ordering.

Selection Notes

Select this component when a fixed maximum duty ratio is acceptable for the boost converter design. It is appropriate for applications where the oscillation frequency needs to be set externally rather than being fixed internally. Consider the TSSOP-8 package size relative to available PCB space.

Part Context

This part belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant distinguishes itself from the S-8337 series by having a fixed maximum duty ratio, whereas the S-8337 series allows duty ratio control via an external resistor.

Replacement Considerations

S-8338ABEC-T8T1G