S-8333AAIB-T8T1G

Overview

The S-8333AAIB-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 a TSSOP-8 package and supports an internal oscillation frequency up to 1.2 MHz, which can be adjusted via external components. Key integrated circuits include a reference voltage circuit, error amplifier, under voltage lockout (UVLO), and timer latch short-circuit protection.

Feature Summary

• Integrates UVLO and timer latch short-circuit protection for enhanced system reliability
• Supports adjustable maximum duty ratio through external resistor connection
• Enables phase compensation and gain adjustment via external RC networks

Applications

• Power supply systems for LCD panels
• Portable electronic devices requiring low-voltage operation
• Step-up DC-DC converter designs in PMIC applications

Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and electrical characteristics. Confirm RoHS compliance status and check for product change notifications regarding material or design updates prior to procurement.

Selection Notes

Select this component when designing boost converters requiring high-frequency PWM control with adjustable duty cycle limits. Ensure external oscillator and feedback components match the required operating frequency and stability criteria defined in the application notes.

Part Context

This part belongs to the S-8333 Series of high-frequency step-up switching regulator controllers. It shares core architecture with variants like S-8337/8338 but differs in fixed parameters such as maximum duty ratio settings and specific package configurations.

Replacement Considerations

S-8333ABCB-T8T1G and S-8333AACB-T8T1G are functionally similar controllers within the same series. Verify package compatibility and specific electrical parameter differences before substitution.