S-8333ACAB-T8T1G

Overview

The S-8333ACAB-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 supports a maximum internal oscillation frequency of 1.08 MHz via the ROSC pin. The device utilizes pulse width modulation (PWM) control with a maximum duty ratio adjustable through the RDuty pin. It features a soft-start function, under-voltage lockout (UVLO), and timer latch short-circuit protection. The component is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
• Includes under-voltage lockout and timer latch short-circuit protection circuits for enhanced system reliability.
• Supports external adjustment of oscillation frequency and maximum duty ratio for flexible design configurations.

Applications

• Power supply for LCD modules
• Portable electronic systems operating on low voltage
• Battery-powered devices requiring step-up conversion

Procurement Notes

Verify the specific suffix codes against the official ABLIC datasheet to ensure correct output configuration and factory specifications. Confirm RoHS compliance status and environmental documentation prior to ordering. Check current availability as this series may be subject to special order requirements or obsolescence notices from the manufacturer.

Selection Notes

Select this component when a low minimum operating voltage of 1.8 V is required for step-up applications. Ensure the external resistor values for the ROSC and RDuty pins align with the desired switching frequency and duty cycle limits. Verify that the TSSOP-8 package fits the PCB layout constraints and thermal requirements of the target application.

Part Context

This part belongs to the S-8333 Series of high-frequency PWM control switching regulator controllers. The series is designed for portable systems and LCD power supplies, offering a compact solution with integrated protection features. It complements other variants in the family that may differ in fixed duty ratios or specific output characteristics.

Replacement Considerations

The S-8333AACB-T8T1G and S-8333AADB-T8T1G are documented variants within the same series sharing similar electrical characteristics and package types. Verify functional equivalence regarding duty ratio control and frequency settings before substitution.