ES1022SI Equivalent & Substitute Parts

Part Overview

The ES1022SI is an Intel Enpirion® power supply controller designed for hot-swap and power sequencing applications. This 14-SOIC surface-mount device operates across a wide input voltage range of 3.3V to 24V and is classified as obsolete. Due to its discontinued status, identifying functionally compatible alternatives is essential for system redesign, board revisions, and long-term supply chain planning.

Substiute Parts

ES1022SI

IntelIn Stock: 1276ES1022SI Datasheet

Current PartRFQ

LTC2920-1CS5#TRMPBF

Analog Devices Inc.In Stock: 1352LTC2920-1CS5#TRMPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ES1022SI is constrained by the following critical parameters:

Functional Compatibility Criteria:

• Power Management (PMIC) category classification
• Surface-mount technology requirement
• Supply voltage operation within or overlapping the 3.3V ~ 24V range
• Single or dual power supply controller functionality
• RoHS compliance status

Package Consideration: The ES1022SI uses a 14-SOIC package. Substitute parts may employ different package geometries (such as TSOT-23-5) provided that the application circuit topology permits package migration and PCB layout redesign.

Electrical Operating Range: The substitute LTC2920-1CS5#TRMPBF operates at 2.3V ~ 6V supply voltage, which represents a narrower range than the original part. This substitution is valid only for applications where the actual operating voltage remains within the 2.3V ~ 6V window.

Parameter Comparison

Engineering Selection Recommendations

Substitution Validity: The LTC2920-1CS5#TRMPBF is the manufacturer-recommended substitute for the ES1022SI. This recommendation is based on functional equivalence within the Power Management (PMIC) category and active product status.

Critical Constraints:

1. Voltage Range Limitation: The substitute operates at 2.3V ~ 6V. Applications requiring the full 3.3V ~ 24V input range of the original part cannot use this substitute without circuit topology modification.
2. Temperature Range Limitation: The substitute operates at 0°C ~ 70°C, compared to the original -40°C ~ 85°C. Applications requiring extended temperature operation must verify compatibility.
3. Package Migration: Transition from 14-SOIC to SOT-23-5 requires PCB layout redesign and schematic verification of pin assignments.

Compliance Status: Both parts meet RoHS requirements. The substitute carries ROHS3 compliance and REACH Unaffected status, providing regulatory alignment for current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can the LTC2920-1CS5#TRMPBF directly replace the ES1022SI on existing PCBs? A: No. The package change from 14-SOIC to SOT-23-5 requires PCB layout redesign. Pin-to-pin compatibility cannot be assumed without detailed schematic and pinout verification.

Q: What is the primary limitation of using the LTC2920-1CS5#TRMPBF as a substitute? A: The supply voltage range is narrower (2.3V ~ 6V versus 3.3V ~ 24V). Substitution is valid only if your application operates within the 2.3V ~ 6V window.

Q: Does the substitute meet the same environmental specifications? A: The substitute has a narrower operating temperature range (0°C ~ 70°C versus -40°C ~ 85°C). Verify that your application does not require extended temperature operation below 0°C or above 70°C.

Q: Are there any advantages to using the substitute? A: The LTC2920-1CS5#TRMPBF offers lower quiescent current (230 µA versus 286 µA) and superior moisture sensitivity rating (MSL 1 Unlimited versus MSL 2 1 Year). The part is in active production, ensuring long-term availability.

Q: What certifications apply to both parts? A: Both parts are RoHS compliant. The substitute carries additional ROHS3 and REACH Unaffected certifications, meeting current regulatory requirements.