CHY101D Battery USB Charger Interface IC Equivalent & Substitute Parts

Part Overview

The CHY101D is a Battery USB Charger Interface IC manufactured by Power Integrations, designed for USB 2.0 quick charge applications. This Surface Mount device operates across an extended temperature range of -40°C to 105°C and provides over voltage fault protection. The CHY101D is classified as discontinued at DiGi Electronics, necessitating identification of functionally equivalent substitute components for ongoing design support and procurement requirements.

Substiute Parts

CHY101D

Power IntegrationsIn Stock: 908CHY101D Datasheet

Current PartRFQ

CHY103DG

Power IntegrationsIn Stock: 1072CHY103DG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CHY101D is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: Power Integrations
• Series: ChiPhy™
• Function: USB Charger Interface
• Interface: USB
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 105°C (TA)
• RoHS Compliance: RoHS Compliant
• MSL Rating: 1 (Unlimited)

Allowable Variations:

• Fault Protection features may be enhanced (additional protection types acceptable)
• Product Status may differ (Active status preferred for new designs)
• Inventory availability may vary

The CHY103DG meets all mandatory matching parameters and qualifies as a direct substitute for the CHY101D.

Parameter Comparison

Engineering Selection Recommendations

CHY103DG as Primary Substitute:

The CHY103DG is a direct functional equivalent to the CHY101D for new designs and procurement. Both components share identical electrical and mechanical specifications within the ChiPhy™ series, including package geometry, thermal operating range, and interface characteristics. The CHY103DG maintains Active product status, ensuring long-term availability and supply chain continuity compared to the discontinued CHY101D.

The CHY103DG incorporates enhanced fault protection features (Over Temperature and Short Circuit protection in addition to Over Voltage), which provide additional circuit safeguards without introducing incompatibility. Both components carry identical RoHS Compliance and MSL ratings, confirming regulatory and manufacturing process alignment.

Inventory availability for the CHY103DG (1003 Pcs) exceeds that of the CHY101D (821 Pcs), supporting procurement flexibility for production volumes.

Frequently Asked Questions (FAQ)

Q: Can the CHY103DG replace the CHY101D in existing designs?

A: Yes. The CHY103DG is a direct substitute. Both components share identical package geometry (8-SOIC), thermal specifications (-40°C to 105°C), interface type (USB), and mounting configuration (Surface Mount). Pin-to-pin compatibility and electrical interface characteristics are equivalent.

Q: What is the difference in fault protection between these parts?

A: The CHY101D provides Over Voltage protection. The CHY103DG provides Over Voltage, Over Temperature, and Short Circuit protection. The enhanced protection in the CHY103DG is a superset of the CHY101D functionality and does not create incompatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the CHY101D and CHY103DG are RoHS Compliant with identical MSL ratings (1 - Unlimited), confirming compliance with environmental and manufacturing standards.

Q: Why is the CHY101D listed as discontinued?

A: The CHY101D is discontinued at DiGi Electronics. The CHY103DG remains in Active product status, making it the recommended choice for new procurement and design implementations.

Q: Are there any thermal or operating range differences?

A: No. Both components operate across the identical temperature range of -40°C to 105°C (TA), ensuring equivalent thermal performance in target applications.

Q: What is the package compatibility consideration?

A: Both components use the 8-SOIC (0.154", 3.90mm Width) package. PCB footprints, solder reflow profiles, and assembly processes are identical. No layout or manufacturing modifications are required for substitution.