CAP005DG

Specialized ICS Overview

The CAP005DG is a zero-loss automatic X capacitor discharge IC from the CapZero family by Power Integrations. It blocks current flow in safety discharge resistors during AC operation, reducing standby power loss to less than 5 mW at 230 VAC. Upon AC disconnection, it automatically connects internal series resistors to discharge the X capacitor to Safety Extra Low Voltage (SELV) levels within one second, meeting international safety standards. The device features an 825 V breakdown voltage and supports total X capacitance up to 1.5 mF with a total series resistance of 480 kW.

Specialized ICS Feature Summary

• Zero-loss operation reduces standby power consumption to less than 5 mW at 230 VAC
• Self-supplied design requires no external bias voltage or ground connection
• High common mode surge immunity and 1000 V differential surge withstand capability
• Automatic discharge to SELV levels within 1 second upon AC removal

Specialized ICS Applications

• Appliances requiring EuP Lot 6 compliance
• Adapters requiring ultra-low no-load consumption
• Converters requiring very low standby power

Specialized ICS Procurement Notes

Verify the specific ordering suffix for packaging requirements. The base part number CAP005DG typically denotes tube packaging, while the suffix TL indicates tape and reel configuration containing 2,500 pieces. Confirm RoHS compliance and halogen-free status as specified in the product ordering information section of the datasheet.

Specialized ICS Selection Notes

Select the CAP005DG when the application requires handling total X capacitance up to 1.5 mF. This device offers an 825 V breakdown voltage, suitable for systems where the MOV is placed directly across the X capacitor (MOV POS1). Ensure the total external resistance matches the specified 480 kW to achieve the required RC time constant for safety compliance.

Specialized ICS Part Context

The CAP005DG belongs to the CapZero family of specialized PMICs designed for AC-DC converters. It serves as a two-terminal solution that replaces traditional resistor networks, allowing designers to optimize EMI filtering without increasing standby power. The family includes variants with 825 V and 1000 V ratings to accommodate different surge environments.

Specialized ICS Replacement Considerations

Direct functional replacements within the same family include CAP002DG through CAP009DG for varying capacitance limits at 825 V, or CAP012DG through CAP019DG for 1000 V applications. Selection depends on matching the specific X capacitor value and surge voltage requirements of the target system.