S-8333TCDB-T8T1U

Overview

The S-8333TCDB-T8T1U is a CMOS step-up switching regulator 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 a switching frequency range of 280 kHz to 1.08 MHz. It is housed in an 8-TSSOP package.

Feature Summary

• Integrates internal PWM control and oscillation circuits for compact design
• Features timer latch short-circuit protection for enhanced reliability
• Supports low-voltage operation starting at 1.8 V input
• Includes under-voltage lockout circuitry

Applications

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

Procurement Notes

Verify the specific suffix TCDB against the official datasheet to confirm the fixed switching frequency range and output configuration. Confirm the T8T1U packaging designation matches the required reel quantity and tape specifications for your assembly line. Ensure the manufacturer is identified as ABLIC Inc. or Seiko Instruments as per historical records.

Selection Notes

Select this component when a fixed high-frequency boost converter is required without external oscillator resistors. It is suitable for designs needing integrated short-circuit protection and UVLO. Compare against the S-8337 series if adjustable duty cycle or frequency via external components is preferred over fixed internal settings.

Part Context

This part belongs to the S-8333 Series of CMOS step-up switching regulators. The series is designed for portable applications due to its low minimum operating voltage. It differs from the S-8337/8338 series by having fixed internal parameters rather than externally adjustable oscillation and duty cycle pins.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.