S-8333ABHB-T8T1G

Overview

The S-8333ABHB-T8T1G is a CMOS step-up switching regulator controller from the S-8333 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 with a maximum oscillation frequency of 1.2 MHz. The device is housed in an 8-pin TSSOP package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, PWM controller, under-voltage lockout, and timer latch short-circuit protection.
• Features adjustable internal oscillation frequency via an external resistor connected to the ROSC pin.
• Allows customization of the maximum duty ratio through an external resistor on the RDuty pin.

Applications

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

Procurement Notes

Verify the specific suffix against official documentation to confirm exact electrical characteristics, as variations exist within the series. 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 that require high-frequency operation up to 1.2 MHz. Ensure the application demands an adjustable duty ratio and frequency, and verify compatibility with the required input voltage range of 1.8 V to 6 V.

Part Context

This part belongs to the S-8333/8337/8338 series of high-frequency PWM control switching regulator controllers. These devices are designed for portable applications where low minimum operating voltages and compact external component counts are critical design constraints.

Replacement Considerations

The S-8333AAHB-T8T1G is a confirmed substitute within the same series offering similar functionality. Verify pin compatibility and specific electrical tolerances before implementation.

FAQ

How is the oscillation frequency adjusted?

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 (UVLO) and a timer latch short-circuit protection circuit.