S-8333TCDC-T8T1U

Overview

The S-8333TCDC-T8T1U is a CMOS step-up switching regulator controller from the ABLIC S-8333 series. It integrates a reference voltage circuit, oscillator, error amplifier, PWM controller, under-voltage lockout (UVLO), and timer latch short-circuit protection. The device operates with a minimum input voltage of 1.8 V and supports an internal oscillation frequency up to 1.2 MHz via an external resistor on the ROSC pin. Maximum duty ratio control is adjustable through an external resistor on the RDuty pin. Phase compensation and gain are tuned using components connected to the CC pin. It is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates PWM control with adjustable maximum duty ratio via external resistance
• Features low minimum operating voltage suitable for portable systems
• Includes built-in under-voltage lockout and short-circuit protection circuits

Applications

• Power supply units for LCD panels
• Portable electronic devices requiring low voltage operation
• Battery-powered systems utilizing step-up conversion

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm output configuration and tolerance levels. Confirm RoHS compliance status and packaging details directly with the manufacturer or authorized distributors prior to ordering. Ensure design compatibility with required switching frequencies and duty cycle adjustments.

Selection Notes

Select this component when designing boost converters requiring precise duty cycle control and high-frequency operation. Evaluate external component requirements for the ROSC, RDuty, and CC pins to meet stability and transient response specifications. Consider the 1.8 V minimum operating voltage constraint for input source selection.

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 power solutions with low standby current. Variants within the series differ primarily in output voltage settings and package options, sharing core control architecture and protection features.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure replacement parts match the TSSOP-8 footprint and support similar input voltage ranges and switching frequencies.