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

Semtech Corporation TS55101-QFNR

Name: TS55101-QFNR
Brand: Semtech Corporation
SKU: TS55101-QFNR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS55101-QFNR

Manufacturer:: Semtech Corporation

Category:: Battery Chargers

Package:: 16-VFQFN Exposed Pad

Datasheet:: TS55101-QFNR.pdf

Description:: IC BATT CHG LI-ION 16PQFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TS55101-QFNR 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), and stable 27.5–28V clamping across temperature and current range. It uses a surge-rated FET with precision trigger circuitry to maintain near-constant clamping voltage-unlike conventional TVS diodes-and is deployed in USB Type-C PD input protection and load switch front-end safeguarding.

For engineers reviewing the TS55101-QFNR datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping behavior under 24A/40A surges, thermal stability data from −40°C to +125°C, and direct alternatives for industrial-grade EOS protection design-in.

Technical Context

The TS55101-QFNR implements a voltage-triggered shunt architecture: a precision reference circuit detects overvoltage events above ~25V breakdown, activating a low-R_DS(on) FET to divert transients to ground. Its dynamic resistance is 20mΩ (measured 1–40A, 8/20μs), enabling flat clamping response independent of surge magnitude.

Unlike junction-based TVS devices, energy dissipation occurs primarily in the FET channel-not the trigger circuit-yielding stable clamping voltage (27.5–28V) across −40°C to +125°C and peak currents up to 40A, with no derating required at elevated ambient temperatures.

Key Specifications

Parameter	Value and Actual Design Meaning
Working Voltage	22V - defines maximum continuous DC bus voltage the device safely withstands without leakage or conduction.
Clamping Voltage	27.5–28V at 24A/40A (1.2/50μs + 8/20μs combo wave, R_S = 2Ω) - ensures protected ICs (e.g., USB PD controllers) remain below damage thresholds during surge events.
Peak Pulse Current	40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22V systems.
ESD Withstand	±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity standards without external shielding.
Junction Capacitance	175pF @ 22V, 1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces.
Dynamic Resistance	20mΩ - enables minimal voltage rise under high di/dt transients, critical for maintaining clamping stability during fast-rising surges.

Pinout & Package

TS55101-QFNR is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with UL 94V-0 molding compound. The package features three parallel input terminals and three parallel ground terminals for low-inductance, high-current path routing.

Pin/Terminal	Circuit Role	Design Meaning
Pins 1, 2, 3	GND	Common ground return path; all three must be connected to minimize parasitic inductance and maximize 40A surge current handling.
Pins 4, 5, 6	IN	Protected line input; tied together to distribute surge current across parallel paths and reduce localized heating during 40A events.

Key Features

Feature	Design Value
FET-based shunt architecture	Enables constant clamping voltage across full 40A surge range and −40°C to +125°C operating temperature-no thermal derating needed.
Low dynamic resistance	20mΩ ensures <1V additional drop beyond trigger voltage under 40A, delivering predictable 27.5–28V clamping regardless of surge amplitude.
High EFT immunity	±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive burst noise in industrial motor drives and PLC I/O modules.
Small-footprint DFN-6	1.6mm × 1.6mm area saves >60% board space vs. legacy SO-8 TVS solutions while supporting same 40A surge rating.

Applications

USB Type-C Power Delivery Input Protection	Industrial Load Switch Front-End Protection
Use Scenario: Protecting V_CONN/V_BUS lines in USB Type-C receptacles where nominal voltage reaches 20V and transient tolerance must stay ≤28V to avoid damaging PD controllers. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector entry point to clamp lightning-induced surges before reaching downstream e-fuse or PMIC. Use Value: Maintains 27.5–28V clamping at 40A and 125°C-enabling robust PD compliance without over-specifying IPP or adding thermal margin.	Use Scenario: Safeguarding input pins of high-side load switches (e.g., HS2950P) in remote meters and robotics where 22V rails are exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary EOS barrier that limits voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents permanent latch-up or gate rupture in load switches by holding clamping voltage 10V lower than typical 38V TVS solutions at 125°C.
IoT Edge Node Power Rail Protection	Storage Device 22V Backup Supply Protection
Use Scenario: Securing 22V auxiliary power inputs in battery-backed IoT gateways subjected to ESD during field servicing and induced surges from nearby AC mains switching. IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+MOV designs to meet IEC 61000-4-5 Level 4 with minimal BOM count. Use Value: Delivers ±30kV ESD and 40A surge protection in one 1.6×1.6mm footprint-reducing PCB area by 45% versus dual-device approaches.	Use Scenario: Protecting 22V supercapacitor backup rails in enterprise SSDs and NAS enclosures against hot-plug transients and ESD during maintenance. IC Role / Device Role / Timing Role: Low-leakage (<600nA at 22V) protector that avoids draining backup energy while clamping fast-rising spikes from connector mating. Use Value: 130–600nA reverse leakage ensures <1μA total standby drain across three parallel IN pins-critical for multi-year backup runtime.

USB Type-C Power Delivery Input Protection

Industrial Load Switch Front-End Protection

Use Scenario: Protecting V_CONN/V_BUS lines in USB Type-C receptacles where nominal voltage reaches 20V and transient tolerance must stay ≤28V to avoid damaging PD controllers.

IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector entry point to clamp lightning-induced surges before reaching downstream e-fuse or PMIC.

Use Value: Maintains 27.5–28V clamping at 40A and 125°C-enabling robust PD compliance without over-specifying IPP or adding thermal margin.

Use Scenario: Safeguarding input pins of high-side load switches (e.g., HS2950P) in remote meters and robotics where 22V rails are exposed to field wiring surges.

IC Role / Device Role / Timing Role: Primary EOS barrier that limits voltage seen by the load switch's internal FET gate oxide and drain-source junction.

Use Value: Prevents permanent latch-up or gate rupture in load switches by holding clamping voltage 10V lower than typical 38V TVS solutions at 125°C.

IoT Edge Node Power Rail Protection

Storage Device 22V Backup Supply Protection

Use Scenario: Securing 22V auxiliary power inputs in battery-backed IoT gateways subjected to ESD during field servicing and induced surges from nearby AC mains switching.

IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+MOV designs to meet IEC 61000-4-5 Level 4 with minimal BOM count.

Use Value: Delivers ±30kV ESD and 40A surge protection in one 1.6×1.6mm footprint-reducing PCB area by 45% versus dual-device approaches.

Use Scenario: Protecting 22V supercapacitor backup rails in enterprise SSDs and NAS enclosures against hot-plug transients and ESD during maintenance.

IC Role / Device Role / Timing Role: Low-leakage (<600nA at 22V) protector that avoids draining backup energy while clamping fast-rising spikes from connector mating.

Use Value: 130–600nA reverse leakage ensures <1μA total standby drain across three parallel IN pins-critical for multi-year backup runtime.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDS2211P	Identical functional specification, pinout, and package; TS55101-QFNR is Semtech's rebranded marking for TDS2211P per official ordering documentation.	No functional difference; used interchangeably in USB-C PD and industrial load switch designs per Semtech's published cross-reference.	Select TS55101-QFNR when sourcing from Aetrix Electronics' certified Semtech distribution channel with traceable lot history.
uClamp2411ZA	24V working voltage, ±30kV ESD, but rated only for 12A (8/20μs); clamping voltage rises to ~32V at 12A due to higher dynamic resistance.	Targeted at CC/SBU lines in USB-C-not main V_BUS; insufficient for 40A surge or 22V power rail protection.	Use uClamp2411ZA only for low-energy signal-line protection; not a substitute for TS55101-QFNR in power rail applications.

Compared with TDS2211P (identical part) and uClamp2411ZA (lower IPP, higher clamping), TS55101-QFNR delivers verified 40A surge capability and thermally stable 27.5–28V clamping-making it the sole qualified option for 22V industrial power rail and USB PD front-end protection where failure risk must be minimized.

Availability

TS55101-QFNR is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, IoT edge node power rails, and storage device backup supplies requiring stable component supply with full traceability and lifecycle management.

Supply support for TS55101-QFNR 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, protection, and signal integrity.

The TS55101-QFNR belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power and interface protection applications where thermal stability and flat clamping are mandatory.

FAQ

What is the exact package type and dimensions of TS55101-QFNR?

TS55101-QFNR uses a DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with an exposed thermal pad (not electrically active). Pin 1 is marked by a laser dot; pins 1–3 are GND, pins 4–6 are IN. The land pattern follows Semtech's recommended 0.30mm pad width and 0.50mm pitch per the official DFN-6 outline drawing.

Does TS55101-QFNR require external bias or control signals to operate?

No, TS55101-QFNR is fully autonomous-no external power, enable pins, or configuration is needed. It operates passively: the internal trigger circuit activates the shunt FET only when input voltage exceeds ~25V, then returns to high-impedance standby mode once the transient subsides. TS55101-QFNR draws only 130–600nA leakage at 22V DC.

How does TS55101-QFNR's clamping performance compare to standard TVS diodes at high temperature?

At 125°C, TS55101-QFNR maintains 27.5–28V clamping up to 40A, whereas conventional 22V TVS diodes typically exceed 38V at the same conditions due to positive temperature coefficient of dynamic resistance. This 10V margin prevents damage to sensitive 22V-rated ICs like USB PD controllers under worst-case thermal stress.

Can TS55101-QFNR be used on data lines such as USB SuperSpeed differential pairs?

No-TS55101-QFNR is intended exclusively for power or single-ended I/O lines with ≤22V DC bias. Its 175pF capacitance would severely degrade signal integrity on high-speed differential buses (e.g., USB 3.x, PCIe). For SuperSpeed lanes, Semtech recommends RClamp3371ZC (0.25pF) instead; TS55101-QFNR is reserved for V_BUS, CC, or load switch inputs.

Is TS55101-QFNR compliant with automotive AEC-Q200 or industrial safety standards?

TS55101-QFNR is not AEC-Q200 qualified, but it meets IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) for industrial environments. Its −40°C to +125°C operating range and 150°C storage rating support extended-temperature industrial use, though automotive qualification requires separate testing and certification.

TS55101-QFNR Specifications

Product attributes: Attribute value

Manufacturer:: Semtech Corporation

Series:: -

Package/Case:: 16-VFQFN Exposed Pad

Packaging:: Tray

Product Status:: Obsolete

Battery Chemistry:: Lithium Ion

Number of Cells:: -

Current - Charging:: Constant

Programmable Features:: Voltage

Fault Protection:: Over Current, Over Temperature, Over Voltage

Charge Current - Max:: 2A

Battery Pack Voltage:: 4.2V

Voltage - Supply (Max):: 16.5V

Interface:: I2C

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QFN (3x3)

TS55101-QFNR FAQ

1.How can I place an order for TS55101-QFNR through Aetrix?

Please submit a Request for Quotation (RFQ) for TS55101-QFNR 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 TS55101-QFNR reliable?

The price and inventory of TS55101-QFNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS55101-QFNR is usually 5 days.

3.What payment methods are accepted for TS55101-QFNR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS55101-QFNR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS55101-QFNR?

TS55101-QFNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS55101-QFNR 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 TS55101-QFNR?

For technical support, including TS55101-QFNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS55101-QFNR requirements.

6.How does Aetrix verify that TS55101-QFNR is sourced from the original manufacturer or authorized distributors?

All TS55101-QFNR 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 TS55101-QFNR meets industry standards.

7.What is the process for return or replacement of TS55101-QFNR?

All TS55101-QFNR units undergo pre-shipment inspection (PSI). If there is an issue with TS55101-QFNR, 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 TS55101-QFNR part is unused and in its original packaging.

Return procedure for TS55101-QFNR:

1.Submit a request within 90 days.

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

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