S-8338ACIC-T8T1G

Overview

The S-8338ACIC-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. 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%. Phase compensation and gain are configurable through external components connected to the CC pin. The device includes under-voltage lockout and timer latch short-circuit protection circuits.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller in a single CMOS circuit
• Features low minimum operating voltage suitable for portable systems
• Includes built-in under-voltage lockout and short-circuit protection mechanisms

Applications

• Power supply for LCD modules
• Portable electronic systems requiring low voltage operation
• Step-up DC-DC converter designs

Procurement Notes

Verify the specific suffix ACIC against official ABLIC documentation to confirm exact electrical characteristics and package details. Ensure compatibility with required input voltage ranges and external component values for frequency and duty cycle settings before procurement.

Selection Notes

Select this controller when a fixed maximum duty ratio is acceptable and external adjustment of the duty cycle is not required. Consider the S-8337 series if variable maximum duty ratio control via an external resistor is necessary for the application design.

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, distinguishing it from the S-8337 series which allows duty ratio adjustment. Both share similar core architectures and protection features.

Replacement Considerations

S-8337ABEC-T8T1G

FAQ

How is the internal oscillation frequency adjusted?

The frequency is set up to 1.133 MHz by connecting a resistor to the ROSC pin.

What protection circuits are included?

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