S-8333ABBB-T8T1G

Overview

The S-8333ABBB-T8T1G is a CMOS step-up switching voltage regulator manufactured by ABLIC Inc. It operates with a fixed internal oscillation frequency of 1.2 MHz and utilizes Pulse Width Modulation (PWM) control for efficient power conversion. The device supports an input voltage range from 1.8 V to 6 V, making it suitable for low-voltage portable applications. It is housed in an 8-pin TSSOP package and complies with RoHS standards.

Feature Summary

• Integrates a reference voltage circuit, oscillator, error amplifier, and PWM controller within a single CMOS chip.
• Includes under-voltage lockout (UVLO) functionality to ensure stable operation during power transitions.
• Features a timer latch short-circuit protection circuit to safeguard against output faults.

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltage
• Battery-powered consumer devices requiring step-up regulation

Procurement Notes

Verify the specific suffix 'BBB' against the official ABLIC datasheet to confirm the exact output voltage setting or functional variant. Ensure compatibility with the required external components, such as inductors and capacitors, as specified in the application circuit diagrams. Confirm that the TSSOP-8 packaging aligns with your PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when a fixed 1.2 MHz switching frequency is required for compact passive component sizing. It is appropriate for designs needing integrated short-circuit protection and UVLO without external logic. Compare against the S-8337 series if adjustable maximum duty ratio or programmable oscillation frequency via external resistors is necessary instead of fixed parameters.

Part Context

This part belongs to the S-8333 Series of high-frequency, PWM-controlled step-up switching regulators. The series is designed for applications demanding high efficiency and small solution size due to the 1.2 MHz operating frequency. It complements other PMIC offerings from ABLIC focused on low-voltage DC-DC conversion for battery-operated equipment.

Replacement Considerations

Direct substitutes include other parts within the S-8333 family with matching pinouts and electrical characteristics. Verify equivalent performance regarding input voltage range and thermal dissipation capabilities in the TSSOP-8 package before implementation.