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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Battery Chargers

Semtech Corporation SC805IMLTRT

Name: SC805IMLTRT
Brand: Semtech Corporation
SKU: SC805IMLTRT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SC805IMLTRT

Manufacturer:: Semtech Corporation

Category:: Battery Chargers

Package:: 10-VFDFN Exposed Pad

Datasheet:: SC805IMLTRT.pdf

Description:: IC BATT CHG MULT-CHEM 1CEL 10MLP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SC805IMLTRT 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 24–40A, and 20mΩ dynamic resistance. It protects USB PD, USB Type-C VBus, and load switch inputs in industrial and portable electronics.

For engineers reviewing the SC805IMLTRT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and direct alternatives for EOS-critical 22V bus protection.

Technical Context

The SC805IMLTRT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly shunts transient current to ground. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 24–40A and −40°C to +125°C due to decreasing R_DS(on) under surge conditions.

It operates with a 22V reverse stand-off voltage (V_RWM), 25–27.9V breakdown (V_BR), and 175pF junction capacitance at 22V/1MHz - enabling robust protection without signal integrity compromise on high-speed power rails.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RWM	22V - maximum continuous operating voltage before clamping activation; matches USB PD 20V nominal + margin.
V_C @ 40A	27.5–28V - clamping voltage during full-rated 8/20μs surge; stays within safe margin below typical 30V load switch FET drain-source rating.
I_PP	40A - peak pulse current handling per IEC 61000-4-5; supports industrial ±1kV surge compliance with 42Ω source impedance.
R_DYN	20mΩ - low dynamic resistance ensures minimal voltage rise under surge; enables stable clamping independent of current magnitude.
C_J	175pF @ 22V/1MHz - low enough to avoid significant filtering of DC power rail transients while limiting high-frequency coupling.
ESD Rating	±30kV contact & air - exceeds IEC 61000-4-2 Level 4; eliminates need for secondary ESD stages on protected lines.
T_OP	−40°C to +125°C - full industrial temperature range operation without derating; clamping voltage variation <0.5V across range.

Pinout & Package

SC805IMLTRT is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad not required - energy is dissipated via the FET channel, not junction heating.

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 sharing and minimize parasitic inductance.
4, 5, 6	IN	Protected line input (e.g., VBus); parallel connection of all three pins ensures uniform current distribution and full 40A capability.

Key Features

Feature	Design Value
Constant-clamp architecture	Clamping voltage varies ≤0.5V from 24A to 40A and −40°C to +125°C - eliminates thermal runaway risk and simplifies worst-case margining.
FET-based shunt topology	Replaces traditional TVS junctions with low-R_DS(on) MOSFET; dissipates surge energy in channel rather than PN junction, enabling higher IPP without junction overheating.
Low dynamic resistance	20mΩ measured between 1A–40A (8/20μs); ensures predictable, linear voltage drop during fast-rising surges - critical for protecting sensitive load switches.
High EFT immunity	±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz); suppresses burst noise that can disrupt power sequencing or cause latch-up in downstream controllers.

Applications

USB Type-C Power Delivery Bus Protection	Industrial Load Switch Input Protection
Use Scenario: Protecting VBus lines in USB-C ports supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at connector, clamping transients before they reach PD controller or buck converter. Use Value: Maintains 27.5–28V clamping across temperature and current - avoids overvoltage damage to 30V-rated PD controllers even at 125°C ambient.	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 suppressor that limits voltage stress on the load switch's internal high-side FET during 8/20μs surges. Use Value: Prevents gate oxide damage and drain-source avalanche failure by holding clamping voltage well below the 30–40V V_DSS rating of common load switch FETs.
IoT Device Power Rail Protection	Storage Device 22V Backup Supply Protection
Use Scenario: Securing 22V auxiliary power rails in battery-backed IoT edge nodes subjected to field ESD and induced surges from nearby switching loads. IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS+MOV designs; handles both fast ESD and high-energy lightning surges. Use Value: 1.6mm × 1.6mm footprint saves >60% board area vs. discrete TVS+capacitor solutions while delivering superior clamping consistency.	Use Scenario: Protecting 22V backup supplies in NVMe SSDs or enterprise storage controllers against hot-plug transients and system-level surges. IC Role / Device Role / Timing Role: Standalone EOS guard for non-isolated 22V rails feeding PMICs or flash memory power domains. Use Value: 130–600nA leakage at 22V ensures negligible standby current drain - critical for long-term battery-backed retention.

USB Type-C Power Delivery Bus Protection

Industrial Load Switch Input Protection

Use Scenario: Protecting VBus lines in USB-C ports supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges.

IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at connector, clamping transients before they reach PD controller or buck converter.

Use Value: Maintains 27.5–28V clamping across temperature and current - avoids overvoltage damage to 30V-rated PD controllers even at 125°C ambient.

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 suppressor that limits voltage stress on the load switch's internal high-side FET during 8/20μs surges.

Use Value: Prevents gate oxide damage and drain-source avalanche failure by holding clamping voltage well below the 30–40V V_DSS rating of common load switch FETs.

IoT Device Power Rail Protection

Storage Device 22V Backup Supply Protection

Use Scenario: Securing 22V auxiliary power rails in battery-backed IoT edge nodes subjected to field ESD and induced surges from nearby switching loads.

IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS+MOV designs; handles both fast ESD and high-energy lightning surges.

Use Value: 1.6mm × 1.6mm footprint saves >60% board area vs. discrete TVS+capacitor solutions while delivering superior clamping consistency.

Use Scenario: Protecting 22V backup supplies in NVMe SSDs or enterprise storage controllers against hot-plug transients and system-level surges.

IC Role / Device Role / Timing Role: Standalone EOS guard for non-isolated 22V rails feeding PMICs or flash memory power domains.

Use Value: 130–600nA leakage at 22V ensures negligible standby current drain - critical for long-term battery-backed retention.

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; manufactured by Semtech as direct variant with tape-and-reel packaging per ordering code.	No functional difference; used interchangeably in production where reel quantity (3,000 pcs) and date-code traceability are required.	Select TDS2211P.C when sourcing from authorized Semtech distributors with full lot traceability and standard 7″ reel logistics.
uClamp2411ZA	24V V_RWM, lower 24A I_PP, higher 30V clamping, smaller 1.0mm × 0.6mm SOD-323 package; optimized for CC/SBU lines, not power rails.	Designed for low-capacitance (<0.5pF), low-current signal-line protection - unsuitable for 40A VBus duty due to thermal and current-handling limits.	Choose uClamp2411ZA only for auxiliary signal lines (CC, SBU); do not substitute for SC805IMLTRT on power rails requiring 40A surge handling.

Compared with TDS2211P.C, SC805IMLTRT shares identical performance and form factor but may differ in reel packaging or internal lot coding; compared with uClamp2411ZA, SC805IMLTRT delivers 67% higher surge current capacity and 2.5× lower clamping voltage at rated current - making it the sole suitable choice for 22V power rail EOS protection.

Availability

SC805IMLTRT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch interfaces, and IoT power rail protection requiring stable component supply, full temperature-range reliability, and certified ±30kV ESD immunity.

Supply support for SC805IMLTRT 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 ICs for precision sensing, power management, and transient protection.

The SC805IMLTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-energy EOS applications where stable clamping and temperature resilience are mandatory.

FAQ

What is the maximum continuous operating voltage for SC805IMLTRT?

The SC805IMLTRT has a reverse stand-off voltage (V_RWM) of 22V, meaning it remains non-conductive and provides no clamping below this threshold. This rating aligns precisely with 22V-rated power buses such as USB PD 20V systems with safety margin, and is confirmed in the absolute maximum ratings table of the official Semtech datasheet Rev 2.5.

Does SC805IMLTRT require a thermal pad on the PCB?

No, SC805IMLTRT does not require a thermal pad. Its FET-based architecture dissipates surge energy in the channel rather than the silicon junction, eliminating localized heating. The datasheet explicitly states "no thermal pad is needed" and recommends connecting all GND pins (1–3) and IN pins (4–6) with low-inductance traces instead.

How does SC805IMLTRT's clamping voltage compare to standard TVS diodes at high temperature?

At 125°C, SC805IMLTRT maintains clamping voltage between 27.5V and 28V across 24–40A, whereas conventional TVS diodes exhibit rising clamping (e.g., ~38V at 24A/125°C). This stability is achieved via decreasing R_DS(on) under surge, not fixed-junction behavior - a key differentiator confirmed in Figure 3 of the TDS2211P datasheet.

Can SC805IMLTRT protect high-speed data lines like USB SuperSpeed?

No, SC805IMLTRT is not intended for high-speed data lines. With 175pF junction capacitance, it is optimized for power rails (VBus, load switch inputs), not signal integrity-critical paths. For USB SS, DP/DM, or CC lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF) - as specified in the USB Type-C Protection Solution diagram.

What is the recommended PCB layout for SC805IMLTRT to achieve full 40A surge rating?

To achieve full 40A rating, all three IN pins (4, 5, 6) must be connected via a single low-inductance trace to the protected line, and all three GND pins (1, 2, 3) must connect to a solid ground plane using multiple vias - as shown in Figure 7 of the datasheet. Placement within 2mm of the connector is mandatory to minimize coupled transient energy.

SC805IMLTRT Specifications

Product attributes: Attribute value

Manufacturer:: Semtech Corporation

Series:: -

Package/Case:: 10-VFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Battery Chemistry:: Multi-Chemistry

Number of Cells:: 1

Current - Charging:: Constant - Programmable

Programmable Features:: Current, Timer

Fault Protection:: Over Current, Over Temperature

Charge Current - Max:: 1A

Battery Pack Voltage:: 4.2V

Voltage - Supply (Max):: 5.9V

Interface:: -

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 10-MLP (3x3)

SC805IMLTRT FAQ

1.How can I place an order for SC805IMLTRT through Aetrix?

Please submit a Request for Quotation (RFQ) for SC805IMLTRT 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 SC805IMLTRT reliable?

The price and inventory of SC805IMLTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC805IMLTRT is usually 5 days.

3.What payment methods are accepted for SC805IMLTRT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC805IMLTRT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SC805IMLTRT?

SC805IMLTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SC805IMLTRT 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 SC805IMLTRT?

For technical support, including SC805IMLTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC805IMLTRT requirements.

6.How does Aetrix verify that SC805IMLTRT is sourced from the original manufacturer or authorized distributors?

All SC805IMLTRT 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 SC805IMLTRT meets industry standards.

7.What is the process for return or replacement of SC805IMLTRT?

All SC805IMLTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC805IMLTRT, 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 SC805IMLTRT part is unused and in its original packaging.

Return procedure for SC805IMLTRT:

1.Submit a request within 90 days.

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

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