S-8333ABAC-T8T1G

Overview

The S-8333ABAC-T8T1G is a CMOS step-up switching regulator controller manufactured by ABLIC Inc. It operates within a supply voltage range of 1.8 V to 6 V and features an internal oscillator with a frequency adjustable up to 1.08 MHz via an external resistor. The device utilizes PWM control with a maximum duty ratio of 0.89, configurable through an external resistor. It includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-TSSOP package and supports operation temperatures from -40°C to +85°C.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient step-up regulation
• Features adjustable oscillation frequency up to 1.08 MHz to optimize external component size
• Includes under-voltage lockout and timer latch short-circuit protection for enhanced system reliability

Applications

• Power supplies for LCD panels
• Portable electronic systems operating on low voltage sources
• Battery-powered devices requiring step-up conversion

Procurement Notes

Verify the specific suffix T8T1G corresponds to the Tape & Reel packaging configuration with a standard factory pack quantity of 3000 units. Confirm RoHS compliance status and lead-free material declarations against the latest manufacturer datasheet revision. Ensure the ordering part number matches the exact electrical characteristics required for the target application design.

Selection Notes

Select this controller when designing boost converters requiring adjustable switching frequencies between 280 kHz and 1.08 MHz. It is suitable for applications needing a wide input voltage range starting at 1.8 V. Consider the external resistor requirements for setting the oscillation frequency and maximum duty cycle during circuit design.

Part Context

This component belongs to the S-8333 Series of high-frequency PWM control switching regulators. The series is designed for portable systems and LCD power supplies, offering low minimum operating voltages. The S-8333ABAC variant specifically allows for user-defined maximum duty ratios, distinguishing it from fixed-duty variants within the same family.

Replacement Considerations

Direct substitutes include other S-8333 series variants such as S-8333AADB-T8T1G or S-8333ABCB-T8T1G, provided their fixed duty cycle specifications align with the design requirements. Verify pin compatibility and electrical parameters before substitution.