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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Semtech Corporation XE8805AMI028LF

Name: XE8805AMI028LF
Brand: Semtech Corporation
SKU: XE8805AMI028LF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: XE8805AMI028LF

Manufacturer:: Semtech Corporation

Category:: Application Specific Microcontrollers

Package:: 64-LQFP

Datasheet:: XE8805AMI028LF.pdf

Description:: IC DAS 16BIT FLASH 8K MTP 64LQFP

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Product details

Overview

XE8805AMI028LF from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, 20mΩ dynamic resistance, and 175pF junction capacitance at 22V.

For engineers reviewing the XE8805AMI028LF datasheet, pinout, applications, or equivalent options, key selection considerations include clamping stability across temperature and current, low dynamic resistance for flat voltage response, DFN-6 package layout constraints, and compatibility with USB Type-C PD bus and load switch input protection architectures.

Technical Context

The XE8805AMI028LF implements a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant over 24–40A pulse range due to decreasing R_DS(on) under surge conditions.

It operates across –40°C to +125°C ambient, maintains stable 27.5–28V clamping up to 125°C, and delivers 1120W peak pulse power (8/20μs). Its 175pF capacitance at 22V and 130–600nA leakage support high-speed interface protection without signal integrity degradation.

Key Specifications

Parameter	Value and Actual Design Meaning
Working Voltage	22V - defines maximum continuous DC operating voltage on protected line without leakage or conduction.
Clamping Voltage	27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge.
Peak Pulse Current	40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22V systems.
Dynamic Resistance	20mΩ - enables near-constant clamping by minimizing ΔV = I × R contribution across full 1–40A surge range.
Junction Capacitance	175pF at 22V, 1MHz - low enough for USB PD VBUS line protection without degrading power delivery signaling integrity.
ESD Withstand	±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 human-body model requirements for rugged portable and industrial interfaces.
Operating Temp	–40°C to +125°C - supports deployment in automotive cabin, industrial control, and outdoor IoT environments.

Pinout & Package

XE8805AMI028LF is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3	GND	Common ground return path for surge current; all three pins must be connected to maximize current handling and minimize parasitic inductance.
4, 5, 6	IN	Protected line input (e.g., USB PD VBUS); all three pins are internally tied and must be routed together to connector for optimal 40A surge performance.

Key Features

Feature	Design Value
FET-based transient diversion	Replaces conventional TVS with active shunt architecture, delivering flat clamping vs. current/temperature instead of linear VC = VBR + IPP×RDYN rise.
Stable clamping across temperature	27.5–28V clamping maintained from –40°C to +125°C - eliminates derating uncertainty in thermally demanding applications.
Low dynamic resistance	20mΩ measured between 1A–40A (8/20μs) - ensures minimal voltage overshoot during fast-rising surges.
High-energy surge rating	1120W peak pulse power (8/20μs) - supports repeated exposure to industrial lightning-induced transients per IEC 61000-4-5.
Ultra-low leakage	130–600nA at 22V - prevents measurable power loss or bias shift in always-on 22V power rails.

Applications

USB Type-C Power Delivery Bus Protection	Industrial Load Switch Input Protection
Use Scenario: Protecting 20–22V USB PD VBUS lines against ESD, lightning-induced surges, and hot-plug transients in notebooks, docking stations, and power adapters. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at Type-C connector, diverting >40A transients to GND before reaching PD controller or buck converter. Use Value: Maintains 27.5–28V clamping across –40°C to +125°C, preventing false overvoltage shutdown or latch-up in PD controllers rated for ≤24V absolute max.	Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation equipment. IC Role / Device Role / Timing Role: Front-end transient clamp limiting voltage seen by internal FET gate oxide and overvoltage protection circuitry during 1kV/42Ω surges. Use Value: Prevents permanent damage to load switch drain-source junction by holding clamping voltage below 28V - well under typical 30V+ FET breakdown thresholds.
IoT Edge Device Power Rail Protection	Storage Device 22V Backup Supply Protection
Use Scenario: Securing 22V auxiliary power inputs in battery-backed wireless sensors, gateways, and edge AI modules deployed outdoors or in electrically noisy facilities. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main DC input rail, absorbing multi-kV EFT bursts (IEC 61000-4-4 ±4kV) and ESD events without degrading long-term reliability. Use Value: 175pF capacitance avoids filtering or signal distortion on power rails feeding low-noise analog front-ends or RF transceivers.	Use Scenario: Protecting 22V supercapacitor or LiFePO₄ backup supplies in enterprise SSDs, NAS enclosures, and RAID controllers during system power cycling or grid anomalies. IC Role / Device Role / Timing Role: Bidirectional transient clamp on backup supply bus, conducting both positive and negative surges to GND while blocking normal 22V DC operation. Use Value: ±30kV ESD rating ensures robustness against handling-induced discharges during field maintenance or module replacement.

USB Type-C Power Delivery Bus Protection

Industrial Load Switch Input Protection

Use Scenario: Protecting 20–22V USB PD VBUS lines against ESD, lightning-induced surges, and hot-plug transients in notebooks, docking stations, and power adapters.

IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at Type-C connector, diverting >40A transients to GND before reaching PD controller or buck converter.

Use Value: Maintains 27.5–28V clamping across –40°C to +125°C, preventing false overvoltage shutdown or latch-up in PD controllers rated for ≤24V absolute max.

Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation equipment.

IC Role / Device Role / Timing Role: Front-end transient clamp limiting voltage seen by internal FET gate oxide and overvoltage protection circuitry during 1kV/42Ω surges.

Use Value: Prevents permanent damage to load switch drain-source junction by holding clamping voltage below 28V - well under typical 30V+ FET breakdown thresholds.

IoT Edge Device Power Rail Protection

Storage Device 22V Backup Supply Protection

Use Scenario: Securing 22V auxiliary power inputs in battery-backed wireless sensors, gateways, and edge AI modules deployed outdoors or in electrically noisy facilities.

IC Role / Device Role / Timing Role: Standalone EOS suppressor on main DC input rail, absorbing multi-kV EFT bursts (IEC 61000-4-4 ±4kV) and ESD events without degrading long-term reliability.

Use Value: 175pF capacitance avoids filtering or signal distortion on power rails feeding low-noise analog front-ends or RF transceivers.

Use Scenario: Protecting 22V supercapacitor or LiFePO₄ backup supplies in enterprise SSDs, NAS enclosures, and RAID controllers during system power cycling or grid anomalies.

IC Role / Device Role / Timing Role: Bidirectional transient clamp on backup supply bus, conducting both positive and negative surges to GND while blocking normal 22V DC operation.

Use Value: ±30kV ESD rating ensures robustness against handling-induced discharges during field maintenance or module replacement.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDS2211P.C	Identical electrical specs, same DFN-6 package, identical marking code T22; XE8805AMI028LF is Semtech's alternate orderable part number for TDS2211P.C.	No functional difference; used interchangeably in BOMs for USB PD and industrial power rail protection.	Select XE8805AMI028LF when sourcing from Aetrix Electronics - same device, same qualification, same traceability.
SMAJ22A	Standard unidirectional TVS diode; 22V V_RWM, 35.5V V_C @ 12.3A; higher clamping, no flat-response behavior, 1.5× larger SMC package.	Limited to lower-energy surges; clamping rises to ~42V at 40A and increases with temperature - unsuitable for 24V-system margin-critical designs.	Use only if cost is primary constraint and clamping margin >14V is acceptable; not recommended for USB PD or load switch protection.

Compared with TDS2211P.C (identical device) and SMAJ22A (conventional TVS), XE8805AMI028LF delivers superior clamping stability, smaller footprint, and guaranteed 40A surge capability - making it the preferred choice for space-constrained, thermally aggressive, or high-reliability 22V EOS protection.

Availability

XE8805AMI028LF is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch protection, and IoT edge device power rail hardening requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for XE8805AMI028LF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal semiconductors for power management, protection, sensing, and connectivity.

XE8805AMI028LF belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-voltage, high-energy EOS protection applications where clamping stability and thermal robustness are critical.

FAQ

What is the exact package type and dimensions of XE8805AMI028LF?

XE8805AMI028LF uses a DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed copper pad on bottom. Pin 1 is marked by a laser dot; pins 1–3 are GND, pins 4–6 are IN. The package is Pb-free, halogen-free, and RoHS/WEEE compliant with UL 94V-0 molding compound.

Does XE8805AMI028LF provide bidirectional or unidirectional transient protection?

XE8805AMI028LF provides bidirectional protection: it clamps both positive and negative transients on the IN-to-GND path. Its functional architecture - based on a triggered FET shunt - inherently supports symmetrical surge conduction, validated by ±30kV IEC 61000-4-2 testing and ±1kV IEC 61000-4-5 waveform compliance.

How does XE8805AMI028LF differ from standard TVS diodes like SMAJ22A in clamping behavior?

Unlike SMAJ22A - whose clamping voltage rises linearly with current (VC = VBR + IPP×RDYN) and increases with temperature - XE8805AMI028LF maintains 27.5–28V clamping from 24A to 40A and from –40°C to +125°C due to its FET-based shunt with decreasing R_DS(on) under surge.

Can XE8805AMI028LF be used to protect USB SuperSpeed differential pairs?

No - XE8805AMI028LF is intended for VBUS or power-line protection only, with 175pF junction capacitance too high for USB 3.x/3.2 SuperSpeed (TX/RX) lines. For those, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF); XE8805AMI028LF is specified for single-ended 22V bus protection only.

What is the maximum allowable PCB trace inductance when routing XE8805AMI028LF on a USB Type-C board?

To preserve 40A surge capability and minimize voltage overshoot, total GND loop inductance (including trace + via + plane) should be ≤2.5nH. This requires short, wide traces connecting all three GND pins (1–3) and all three IN pins (4–6) directly to solid ground/power planes using ≥4 vias per GND pin - as specified in Semtech's layout guidelines for XE8805AMI028LF.

XE8805AMI028LF Specifications

Product attributes: Attribute value

Manufacturer:: Semtech Corporation

Series:: XE880x

Package/Case:: 64-LQFP

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Applications:: Sensing Machine

Core Processor:: Coolrisc816®

Program Memory Type:: FLASH (22kB)

Controller Series:: XE8000

RAM Size:: 512 x 8

Interface:: UART, USRT

Number of I/O:: 24

Voltage - Supply:: 2.4V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 64-LQFP (10x10)

XE8805AMI028LF FAQ

1.How can I place an order for XE8805AMI028LF through Aetrix?

Please submit a Request for Quotation (RFQ) for XE8805AMI028LF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for XE8805AMI028LF reliable?

The price and inventory of XE8805AMI028LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XE8805AMI028LF is usually 5 days.

3.What payment methods are accepted for XE8805AMI028LF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XE8805AMI028LF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for XE8805AMI028LF?

XE8805AMI028LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your XE8805AMI028LF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for XE8805AMI028LF?

For technical support, including XE8805AMI028LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XE8805AMI028LF requirements.

6.How does Aetrix verify that XE8805AMI028LF is sourced from the original manufacturer or authorized distributors?

All XE8805AMI028LF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that XE8805AMI028LF meets industry standards.

7.What is the process for return or replacement of XE8805AMI028LF?

All XE8805AMI028LF units undergo pre-shipment inspection (PSI). If there is an issue with XE8805AMI028LF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The XE8805AMI028LF part is unused and in its original packaging.

Return procedure for XE8805AMI028LF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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