S-8333ABAB-T8T1G

Overview

The S-8333ABAB-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, set via an external resistor on the ROSC pin. It features a maximum duty ratio controllable through an external resistor on the RDuty pin. The component includes under-voltage lockout (UVLO), soft-start functionality, and timer latch short-circuit protection. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates PWM control with adjustable oscillation frequency for flexible power management
• Includes built-in under-voltage lockout and timer latch short-circuit protection circuits
• Features soft-start function to manage inrush current during power application

Applications

• Power supply units for LCD displays
• Portable electronic systems operating on low voltage sources

Procurement Notes

Verify the specific output voltage setting associated with the ABAB suffix against the official datasheet before procurement. Confirm that the 8-TSSOP package dimensions align with the target PCB footprint. Ensure compatibility with the required switching frequency configuration using external resistors. Check for any RoHS compliance documentation updates from the manufacturer.

Selection Notes

Select this component when a low minimum operating voltage of 1.8 V is required for step-up applications. Consider the 1.08 MHz maximum frequency capability for compact passive component sizing. Evaluate the need for external resistors to define the switching frequency and duty cycle. Verify that the TSSOP-8 package is suitable for the assembly process.

Part Context

This part belongs to the S-8333 series of CMOS step-up switching regulators designed for portable systems. The series is characterized by its ability to operate at low input voltages and support high-frequency operation. Variants within the series differ primarily in their fixed output voltage settings, determined by the alphanumeric suffix codes.

Replacement Considerations

Substitutes must match the 8-TSSOP package and support a 1.8 V to 6 V input range. Verify that alternative controllers offer similar PWM control and protection features like UVLO and short-circuit protection.