S-8333ABIB-T8T1G

Overview

The S-8333ABIB-T8T1G is a CMOS step-up switching regulator controller 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 device features an internal oscillator with a frequency settable up to 1.2 MHz via an external resistor connected to the ROSC pin. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates a reference voltage circuit, error amplifier, and PWM controller for efficient power management.
• Includes under-voltage lockout and timer latch short-circuit protection circuits for enhanced system safety.
• Allows adjustment of maximum duty ratio through an external resistor connected to the RDuty pin.

Applications

• Power supply units for liquid crystal displays
• Portable electronic systems operating on low voltages

Procurement Notes

Verify the specific suffix against official documentation to confirm exact electrical characteristics and packaging details. Confirm RoHS compliance status and lead times directly with the manufacturer or authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when designing boost converter circuits requiring high-frequency operation and adjustable duty cycles. Ensure the external components match the required oscillation frequency and output specifications defined in the official datasheet.

Part Context

This part belongs to the S-8333 series of high-frequency PWM control switching regulator controllers. The series is designed for applications requiring compact solutions with low minimum operating voltages, suitable for battery-powered portable devices.

Replacement Considerations

Consult official substitution lists for compatible parts within the S-8333 family. Verify pin compatibility and electrical parameter alignment before replacing the component in existing designs.

FAQ

How is the internal oscillation frequency determined?

The internal oscillation frequency can be set up to 1.2 MHz by connecting a resistor to the ROSC pin.

What protection features are included?

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