S-8338AAIC-T8T1G

Overview

The S-8338AAIC-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 integrates 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 a reference voltage circuit, oscillator, error amplifier, and PWM controller for efficient power management.
• Features a low minimum operating voltage of 1.8 V suitable for portable systems.
• Includes built-in under-voltage lockout and timer latch short-circuit protection circuits.

Applications

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

Procurement Notes

Verify the specific suffix 'AAIC' against the official datasheet to confirm exact electrical characteristics and availability status. Confirm the package type is TSSOP-8 and check for any product change notifications or end-of-life notices before finalizing procurement plans.

Selection Notes

Select this component when designing boost converters requiring a wide input voltage range down to 1.8 V. The fixed 88% maximum duty ratio distinguishes it from the S-8337 series, which allows variable duty ratio adjustment. Ensure the application requires PWM control rather than PFM for optimal transient response.

Part Context

This part belongs to the S-8337/8338 Series of high-frequency PWM control switching regulator controllers. These devices are designed as CMOS step-up regulators ideal for applications needing compact solutions with low standby current capabilities.

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