TCK108G,LF

Overview

The TCK108G,LF is a single-channel power distribution load switch IC manufactured by Toshiba Semiconductor and Storage. It features a P-channel output configuration with an open/switch interface. The device supports a wide input voltage range of 1.1 V to 5.5 V and delivers a maximum output current of 1 A. Typical on-resistance is 49 mΩ at 5.0 V and 57 mΩ at 3.3 V under specified conditions. It includes a slew rate controlled driver and an output auto-discharge function. The component operates within a temperature range of -40°C to +85°C and is housed in a compact 4-WCSP package measuring 0.79 mm x 0.79 mm.

Feature Summary

• Integrates a slew rate controlled driver to manage turn-on speed and reduce inrush current effects.
• Includes an output auto-discharge function for rapid load voltage removal upon shutdown.
• Utilizes an ultra-small WCSP4 package designed for high-density board assembly in portable devices.

Applications

• Power management circuits in cellular phones
• Portable electronic devices requiring high-density board assembly
• General power distribution systems

Procurement Notes

Verify the current lifecycle status before integration, as this component may be marked as Not Recommended for New Designs (NRND). Confirm package availability and lead times through authorized distributors, noting that specific supply regions may have restrictions. Ensure design compatibility with the 4-WCSP footprint and thermal requirements for the intended application environment.

Selection Notes

Select this component for applications requiring low on-resistance and precise control over switching transients. The integrated auto-discharge feature distinguishes it from basic switches lacking load bleed capabilities. Consider the 49 mΩ typical resistance for efficiency needs and the small form factor for space-constrained portable designs. Validate input voltage ranges against system rails to ensure operation within the 1.1 V to 5.5 V specification.

Part Context

This part belongs to the TCK106G/TCK107G/TCK108G series of CMOS linear integrated circuits. These devices are designed for general power management with a focus on low switch-on resistance and wide input voltage operation. The series utilizes silicon monolithic technology and is packaged in ultra-small formats suitable for modern mobile electronics, differentiating them from higher-current or multi-channel variants in the broader Toshiba switch portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Toshiba resources for direct replacements or verify if the TCK106G or TCK107G variants meet specific functional requirements, noting differences in auto-discharge features.