S-8333AABC-T8T1G

Overview

The S-8333AABC-T8T1G is a CMOS step-up switching regulator controller from ABLIC Inc., designed for high-frequency PWM control applications. It operates within an input voltage range of 1.8 V to 6 V and supports internal oscillation frequencies up to 1.08 MHz via the ROSC pin. The device features adjustable maximum duty ratios through external resistors connected to the RDuty pin, allowing precise output regulation. Integrated protection mechanisms include under-voltage lockout (UVLO) and timer latch short-circuit protection. The component is housed in an 8-pin TSSOP package with dimensions of 4.4 mm width, suitable for surface-mount assembly.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, and PWM controller for efficient step-up regulation
• Supports low-voltage operation starting at 1.8 V, enabling use in portable systems
• Includes under-voltage lockout and timer latch short-circuit protection circuits
• Allows external adjustment of oscillation frequency and maximum duty ratio

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltage
• Battery-powered devices requiring step-up conversion
• General-purpose DC-DC switching regulator designs

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm exact electrical characteristics and packaging details. Confirm RoHS compliance status and environmental declarations prior to integration. Ensure compatibility with standard surface-mount reflow processes for the TSSOP-8 package. Cross-reference ordering information with authorized distributors to validate current availability and manufacturing lifecycle status.

Selection Notes

Select this component when designing compact power solutions requiring high-frequency operation and low input voltage capability. The adjustable duty ratio and frequency settings provide flexibility for various output requirements. Consider the integrated protection features for robust system reliability. Evaluate thermal performance and PCB layout constraints associated with the TSSOP-8 package for optimal heat dissipation and signal integrity.

Part Context

This part belongs to the S-8333 Series of CMOS step-up switching regulators. The series is characterized by its ability to operate at high frequencies up to 1.2 MHz, facilitating the use of small external components. The S-8333AABC variant specifically denotes a particular configuration within this family, sharing core architectural features with other members like the S-8333AACB and S-8333AADB while differing in specific parameter sets or packaging options.

Replacement Considerations

Direct substitutes within the same series include S-8333AACB-T8T1G and S-8333AADB-T8T1G. Verify functional equivalence regarding input voltage ranges, frequency capabilities, and pin configurations before substitution. Consult official datasheets to ensure that any alternative part meets the specific design requirements for duty ratio adjustment and protection features.