HV300LG-G Hot Swap Controller Equivalent & Substitute Parts

Part Overview

The HV300LG-G is a single-channel hot swap controller designed for -48V applications, manufactured by Microchip Technology. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. Hot swap controllers manage inrush current and provide protection during insertion and removal of power modules in telecommunications and data center infrastructure. The obsolete status necessitates evaluation of active substitute components that maintain electrical and mechanical compatibility.

Substiute Parts

HV300LG-G

Microchip TechnologyIn Stock: 3483HV300LG-G Datasheet

Current PartRFQ

LT1640LIS8#PBF

Analog Devices Inc.In Stock: 2089LT1640LIS8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HV300LG-G is determined by the following critical parameters:

• Package Compatibility: Both the main part and substitute must use 8-SOIC surface mount packaging with 0.154" (3.90mm) width to ensure PCB layout compatibility without redesign.
• Voltage Supply Range: The substitute must operate within or encompass the -90V to -10V supply range required for -48V telecommunications applications.
• Channel Configuration: Single-channel architecture is mandatory for direct functional replacement.
• Operating Temperature Range: The substitute must support the -40°C to 85°C operating window.
• Regulatory Compliance: RoHS3 compliance and REACH unaffected status ensure regulatory alignment.

The LT1640LIS8#PBF from Analog Devices Inc. meets all substitution criteria as an active product with equivalent electrical specifications and identical package form factor.

Parameter Comparison

Engineering Selection Recommendations

The LT1640LIS8#PBF is the qualified substitute for the obsolete HV300LG-G based on the following factors:

• Product Status Alignment: The LT1640LIS8#PBF maintains active product status, ensuring long-term availability and manufacturing support compared to the obsolete HV300LG-G.
• Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements for telecommunications infrastructure.
• Package Equivalence: Identical 8-SOIC packaging enables direct PCB placement without layout modifications.
• Electrical Compatibility: Both components operate across the -48V application range with matching operating temperature specifications and identical MSL ratings.
• Supply Voltage Coverage: The LT1640LIS8#PBF supply voltage range (-80V ~ -10V) encompasses the primary -48V operating point, providing adequate margin for system design.

Frequently Asked Questions (FAQ)

Q: Can the LT1640LIS8#PBF be used as a direct replacement for the HV300LG-G without PCB modifications?

A: Yes. Both components use identical 8-SOIC packaging with 0.154" (3.90mm) width, enabling direct pin-compatible substitution without PCB layout changes.

Q: What is the difference in supply current between these two parts?

A: The HV300LG-G draws 550 µA while the LT1640LIS8#PBF draws 1.3 mA. This 750 µA difference should be evaluated in power budget calculations for systems with strict quiescent current requirements.

Q: Are there any voltage supply range limitations when substituting?

A: The LT1640LIS8#PBF operates from -80V to -10V, compared to the HV300LG-G range of -90V to -10V. For -48V applications, both ranges provide adequate margin. Systems operating near -90V should confirm compatibility with the LT1640LIS8#PBF's -80V minimum specification.

Q: Do both parts support the same programmable features?

A: The HV300LG-G supports Current Limit, Fault Timeout, OVP, Slew Rate, and UVLO. The LT1640LIS8#PBF supports Circuit Breaker, Fault Timeout, OVP, and UVLO. Feature differences should be evaluated against specific application requirements.

Q: What is the inventory status for these components?

A: The HV300LG-G has 3414 pieces in stock as new original inventory. The LT1640LIS8#PBF has 2012 pieces in stock as new original inventory, packaged in tube format.