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Semtech Corporation SC652ULTRT
- Part No.:
- SC652ULTRT
- Manufacturer:
- Semtech Corporation
- Category:
- LED Drivers
- Package:
- 14-UFQFN
- Datasheet:
-
SC652ULTRT.pdf
- Description:
- IC LED DRV RGLTR PWM 25MA 14MLPQ
- Quantity:
- Payment:
- Shipping:
Inventory:4,944
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Product details
Overview
SC652ULTRT from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 27.5–28V clamping across temperature and current range - enabling robust USB Type-C PD bus protection in notebooks and industrial equipment.
For engineers reviewing the SC652ULTRT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under 40A surge, DFN-6 thermal and layout performance, 175pF junction capacitance at 22V, and compatibility with load switch input protection architectures requiring <30V clamping.
Technical Context
The SC652ULTRT uses 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. Unlike conventional TVS diodes, its clamping voltage remains nearly constant (27.5–28V) from 24A to 40A due to decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C with ±30kV contact/air ESD rating, ±4kV EFT immunity, and maintains stable dynamic resistance (20mΩ) and leakage (<600nA at 22V) across temperature - critical for industrial and USB PD applications where thermal derating compromises traditional TVS performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - stays below 30V damage threshold of most PD controllers and load switches. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD endpoints. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for DC power line protection without signal integrity impact. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds USB IF and industrial ESD immunity requirements. |
| Dynamic Resistance | 20mΩ - enables flat clamping curve and minimizes voltage overshoot during fast-rising transients. |
Pinout & Package
SC652ULTRT 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 compact footprint enables placement directly at USB Type-C connectors or load switch inputs with minimal PCB area.
| 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., VBUS or power rail); parallel connection of all three pins ensures uniform current sharing and optimal 40A capability. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables near-constant clamping voltage (27.5–28V) across full 24–40A surge range - unlike TVS diodes whose VC rises linearly with IPP. |
| Temperature-stable clamping | Clamping voltage variation <0.5V from –40°C to +125°C - eliminates thermal derating concerns in enclosed industrial or automotive-adjacent environments. |
| Low dynamic resistance | 20mΩ measured between 1A–40A (8/20μs) - reduces voltage overshoot during sub-100ns ESD events and improves system-level immunity margin. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz bursts) - protects against repetitive switching noise in motor drives and PLC I/O modules. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20V–22V VBUS lines in USB-C PD ports against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed between VBUS and GND, activated within nanoseconds of overvoltage detection. Use Value: Maintains 27.5–28V clamping at 40A - well below 30V damage threshold of USB PD controllers like TUSB73x or STUSB4500. |
Use Scenario: Safeguarding enable and input pins of high-side load switches (e.g., ON Semi NIS513x, TI TPS229xx) in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient clamp preventing gate oxide damage and internal FET avalanche during 1.2/50μs surges. Use Value: Limits voltage across load switch input to ≤28V even at full 40A surge - avoids latch-up and extends device lifetime in ungrounded field deployments. |
| IoT Edge Node Power Rail Protection | Notebook/Tablet DC Power Input Protection |
Use Scenario: Securing 12–24V DC input rails of battery-powered IoT gateways exposed to ESD during field maintenance or lightning-coupled surges. IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS+MOV networks, reducing BOM count and board space. Use Value: 1.6mm × 1.6mm DFN-6 footprint saves >60% area vs. SOD-323 TVS while delivering higher energy handling and lower clamping. |
Use Scenario: Protecting 19–20V adapter input circuits in ultrabooks and tablets against accidental AC mains coupling and ESD from user interfaces. IC Role / Device Role / Timing Role: First-line defense before DC-DC converters and battery charge management ICs. Use Value: Stable 27.5–28V clamping across –40°C to +125°C ensures consistent protection during cold-start or high-ambient operation - no thermal derating required. |
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 (T22XX), and shared Semtech datasheet - confirmed drop-in replacement per ordering info and packaging spec. | Same USB PD, load switch, and industrial rail use cases; validated in Semtech reference designs for Type-C protection. | Select TDS2211P.C when sourcing from authorized Semtech channels with full traceability and reel size (3,000 pcs/7″ reel) matching production planning. |
| uClamp2411ZA.TCT | Lower working voltage (24V), lower clamping (26.5V @ 20A), smaller DFN-2 (1.0×0.6mm), but only rated for 20A IPP - insufficient for 40A IEC 61000-4-5 compliance. | Suitable for CC/SBU lines in USB-C, not VBUS; lacks thermal robustness for sustained 40A surge dissipation. | Use uClamp2411ZA.TCT only for auxiliary signal lines; avoid for main power rail protection where SC652ULTRT's 40A rating and thermal stability are mandatory. |
Compared with TDS2211P.C (identical function and form) and uClamp2411ZA.TCT (lower-power signal-line variant), SC652ULTRT provides guaranteed 40A surge handling, DFN-6 thermal mass for repeated transients, and verified clamping stability across industrial temperature extremes - making it the sole choice for mission-critical 22V bus protection.
Availability
SC652ULTRT is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant surge protection.
Supply support for SC652ULTRT 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 power management, protection, and signal integrity.
SC652ULTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-energy EOS applications where clamping voltage stability and temperature independence are critical.
FAQ
What is the maximum clamping voltage of SC652ULTRT at 40A surge current?
The SC652ULTRT clamps at 27.5–28V under IEC 61000-4-5 40A (8/20μs) surge conditions with 2Ω source impedance. This value is guaranteed across –40°C to +125°C and reflects the device's FET-based architecture, which maintains near-constant voltage via decreasing RDS(on) - unlike TVS diodes whose clamping rises linearly with current.
Does SC652ULTRT require external biasing or control signals to operate?
No, SC652ULTRT is a fully autonomous transient suppressor. It contains an integrated precision trigger circuit and surge-rated FET; no external power, enable pin, or configuration is needed. The SC652ULTRT activates automatically when transient voltage exceeds its breakdown threshold, making it ideal for plug-and-play protection in USB PD and industrial power rails.
Can SC652ULTRT be used to protect high-speed data lines like USB SuperSpeed or PCIe?
No, SC652ULTRT is not suitable for high-speed data lines. Its 175pF junction capacitance at 22V would severely degrade signal integrity on differential pairs operating above 100MHz. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF); SC652ULTRT is optimized exclusively for DC power and low-frequency I/O line protection.
What is the recommended PCB layout for SC652ULTRT to achieve full 40A surge rating?
To achieve the 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. Placement must be within 3mm of the connector, and no thermal pad is required - energy is dissipated in the silicon FET, not the package.
Is SC652ULTRT compliant with RoHS, REACH, and halogen-free standards?
Yes, SC652ULTRT is Pb-free, halogen-free, and compliant with RoHS Directive 2011/65/EU and WEEE Directive 2012/19/EU. Its molding compound meets UL 94V-0 flammability rating, and lead finish is 100% matte tin - confirmed in the official Semtech TDS2211P datasheet Rev 2.5.
SC652ULTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 14-UFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Regulator
- Topology:
- Switched Capacitor (Charge Pump)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 5
- Voltage - Supply (Min):
- 2.9V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 2.5V ~ 5.25V
- Current - Output / Channel:
- 25mA
- Frequency:
- 250kHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-MLPQ-UT (2x2)
SC652ULTRT FAQ
1.How can I place an order for SC652ULTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC652ULTRT 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 SC652ULTRT reliable?
The price and inventory of SC652ULTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC652ULTRT is usually 5 days.
3.What payment methods are accepted for SC652ULTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC652ULTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC652ULTRT?
SC652ULTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC652ULTRT 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 SC652ULTRT?
For technical support, including SC652ULTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC652ULTRT requirements.
6.How does Aetrix verify that SC652ULTRT is sourced from the original manufacturer or authorized distributors?
All SC652ULTRT 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 SC652ULTRT meets industry standards.
7.What is the process for return or replacement of SC652ULTRT?
All SC652ULTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC652ULTRT, 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 SC652ULTRT part is unused and in its original packaging.
Return procedure for SC652ULTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC652ULTRT Tags
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BCR402RE6327HTSA1
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
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