S-8333ABFC-T8T1G

Overview

The S-8333ABFC-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 the ROSC pin. It features a maximum duty ratio controllable through the RDuty pin and includes under-voltage lockout (UVLO) and timer latch short-circuit protection circuits. The component is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates reference voltage circuit, oscillator, error amplifier, and PWM controller for efficient power management
• 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 implementation

Applications

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

Procurement Notes

Verify the specific suffix codes against official datasheets to confirm exact electrical characteristics and package variations. Confirm RoHS compliance status and environmental declarations with the manufacturer prior to integration. Ensure compatibility with required operating temperature ranges and validate all external component selections against the official application guidelines provided in the technical documentation.

Selection Notes

Select this component when designing boost converter circuits requiring low minimum operating voltages down to 1.8 V. Consider the adjustable frequency and duty ratio capabilities for optimizing transient response and stability. Evaluate the need for external compensation components connected to the CC pin to tailor phase compensation and gain values for specific load conditions.

Part Context

This part belongs to the S-8333 Series of high-frequency PWM control switching regulators. The series is designed for applications demanding compact solutions with low input voltage operation. It shares core architectural features with related models like the S-8337 and S-8338, differing primarily in fixed versus adjustable parameters such as maximum duty ratio and frequency limits.

Replacement Considerations

Direct substitutes within the same family include S-8333ACCC-T8T1G and S-8333AACB-T8T1G. Verify functional equivalence regarding frequency settings and duty ratio controls before substitution.