S-8338ACFA-T8T1G

Overview

The S-8338ACFA-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 features under-voltage lockout (UVLO) and timer latch short-circuit protection, packaged in an 8-pin TSSOP.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation
• Includes under-voltage lockout circuitry to ensure stable operation during low input conditions
• Features timer latch short-circuit protection to safeguard against output faults

Applications

• Power supply for LCD panels
• Portable systems operating on low voltage
• Battery-powered electronic devices requiring step-up conversion

Procurement Notes

Verify the specific suffix ACFA against official ABLIC documentation to confirm exact electrical characteristics and availability status. Confirm package type and RoHS compliance details directly with the manufacturer or authorized distributors prior to ordering.

Selection Notes

Select this component when a fixed maximum duty ratio of 88% is required for the boost converter topology. Ensure the application design accommodates the adjustable frequency range up to 1.133 MHz and provides appropriate compensation components for stability.

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 allows duty ratio adjustment via an external resistor.

Replacement Considerations

S-8338ABEC-T8T1G

FAQ

How is the oscillation frequency determined?

The internal oscillation frequency can be 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 (UVLO) circuit and a timer latch short-circuit protection circuit.