S-8338ACIA-T8T1G

Overview

The S-8338ACIA-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 connected to the ROSC pin. The device features a fixed maximum duty ratio of 88% and includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Includes under-voltage lockout and timer latch short-circuit protection circuits for enhanced operational safety.
• Allows adjustment of phase compensation and gain values through external resistors and capacitors connected to the CC pin.

Applications

• Power supply for LCD displays
• Portable systems operating on low voltage

Procurement Notes

Verify the specific suffix codes against official documentation to confirm exact electrical characteristics and packaging details. Confirm RoHS compliance status and ensure the component meets required environmental standards for the intended application before finalizing procurement orders.

Selection Notes

Select this controller when a low minimum operating voltage of 1.8 V is required for portable applications. Choose the S-8338 variant over the S-8337 if a fixed maximum duty ratio is preferred over an externally adjustable one. Ensure external components support the desired oscillation frequency and phase compensation requirements.

Part Context

This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. These devices are designed as CMOS step-up regulators suitable for battery-powered applications requiring stable voltage conversion from low input sources.

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 features are included?

The device incorporates an under-voltage lockout circuit (UVLO) and a timer latch short-circuit protection circuit.