S-8333ABHA-T8T1G

Overview

The S-8333ABHA-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 delivers a maximum output current of 160 mA. The device features a fixed internal oscillation frequency of 1.2 MHz, enabling the use of compact external components. It utilizes PWM control with a maximum duty ratio adjustable via an external resistor connected to the RDuty pin. The IC includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. It is housed in an 8-pin TSSOP package suitable for surface-mount applications.

Feature Summary

• Integrates high-frequency PWM control circuitry with a 1.2 MHz internal oscillator for efficient power conversion.
• Features adjustable maximum duty ratio through external resistance, allowing flexible output voltage configuration.
• Incorporates built-in under-voltage lockout and timer latch short-circuit protection for enhanced system reliability.

Applications

• Power supply units for portable electronic devices
• Voltage regulation for LCD display modules
• Battery-powered systems requiring step-up conversion

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm exact electrical characteristics and packaging details. Ensure compatibility with required operating temperature ranges and input voltage specifications before integration. Confirm RoHS compliance status and lead-free requirements with the manufacturer or authorized distributors to meet regulatory standards.

Selection Notes

Select this component when a low input voltage range starting at 1.8 V is required alongside a fixed high switching frequency. The adjustable duty ratio feature makes it suitable for designs needing custom output voltage levels rather than fixed configurations. Consider the TSSOP-8 package constraints and thermal management requirements for the intended application environment.

Part Context

This part belongs to the S-8333 series of step-up switching regulators designed for low-voltage operation. The series is characterized by its CMOS process technology, which supports low power consumption and high efficiency. It serves as a controller requiring external power switches and passive components to complete the DC-DC conversion circuit.

Replacement Considerations

Consult official ABLIC substitution lists for verified alternatives. Cross-reference pinouts and electrical parameters carefully when considering generic equivalents to ensure functional compatibility.