S-8333ABCB-T8T1G

Overview

The S-8333ABCB-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 supports an internal oscillation frequency up to 1.08 MHz, adjustable via an external resistor on the ROSC pin. It features a timer latch short-circuit protection circuit and under-voltage lockout (UVLO). The component is housed in an 8-pin TSSOP package with dimensions of 4.4 mm length.

Feature Summary

• Integrates reference voltage, oscillator, error amplifier, and PWM controller for efficient power management
• Includes timer latch short-circuit protection and under-voltage lockout circuits for system safety
• Allows external adjustment of maximum duty ratio via the RDuty pin resistor
• Supports phase compensation and gain value adjustments through external RC components

Applications

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

Procurement Notes

Verify the specific suffix codes against the manufacturer datasheet to confirm electrical characteristics and packaging details. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Ensure the ordering information matches the required operational temperature range and package type before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring a low minimum operating voltage of 1.8 V. Consider the adjustable oscillation frequency and duty ratio capabilities for optimizing efficiency. Verify that the external component values for phase compensation meet stability requirements for the specific application load conditions.

Part Context

This part belongs to the S-8333 Series of high-frequency PWM control switching regulator controllers. The series is designed for applications demanding compact solutions with low voltage operation. It shares core architectural features with related models like the S-8337 and S-8338 series, differing primarily in specific output configurations and fixed versus adjustable parameters.

Replacement Considerations

The S-8333AAHB-T8T1G and S-8333ABFC-T8T1G are alternative parts within the same series offering similar step-up functionality and TSSOP-8 packaging. Verify pin compatibility and specific electrical parameter differences before substitution.