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Semtech Corporation SC190CIMLTRT
- Part No.:
- SC190CIMLTRT
- Manufacturer:
- Semtech Corporation
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
SC190CIMLTRT.pdf
- Description:
- IC REG BUCK PROG 300MA 10MLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,559
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Product details
Overview
SC190CIMLTRT 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 a stable 27.5–28V clamping voltage across temperature and current range. Used in USB Type-C PD input protection to safeguard controllers from bus overvoltage events.
For engineers reviewing the SC190CIMLTRT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability under surge, low dynamic resistance (20mΩ), junction capacitance (175pF), and DFN 1.6×1.6mm package compatibility with high-density USB PD and industrial load switch layouts.
Technical Context
The SC190CIMLTRT employs a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses transient overvoltage and rapidly shunts current to ground. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under increasing surge current.
It operates across –40°C to +125°C, maintains <600nA reverse leakage at 22V, and achieves 1120W peak pulse power handling. Its functional architecture enables stable protection for unsymmetrical lines per IEC 61000-4-5 (±1kV, 1.2/50μs + 8/20μs combination waveform, RS = 42Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without triggering |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surge |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients |
| Junction Capacitance | 175pF at 22V, 1MHz - compatible with 22V power rail protection without signal integrity impact on adjacent traces |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity standards |
| Operating Temp. | –40°C to +125°C - supports deployment in extended-temperature industrial and computing environments |
Pinout & Package
SC190CIMLTRT is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with six terminals. The compact footprint enables placement directly at USB Type-C connectors or load switch inputs to minimize trace inductance.
| 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 thermal dissipation |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS); parallel connection of all three pins reduces effective series inductance and improves high-frequency surge response |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V across 24–40A surge range and –40°C to +125°C - eliminates derating uncertainty in thermal design |
| FET-based shunt topology | Replaces traditional pn-junction TVS with sub-0.1Ω RDS(on) - reduces energy dissipation in silicon and avoids thermal runaway at elevated ambient temperatures |
| Low dynamic resistance | 20mΩ measured between 1A and 40A (8/20μs) - limits voltage overshoot during nanosecond-scale ESD events |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz bursts) - protects against repetitive switching noise in motor drives and PLCs |
| UL 94V-0 molding compound | Flame-retardant encapsulation - satisfies safety compliance for industrial and consumer end-equipment certifications |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V VBUS lines in USB-C ports supporting up to 100W PD negotiation. IC Role / Device Role / Timing Role: Primary EOS suppressor placed between connector and PD controller or load switch input. Use Value: Maintains 27.5–28V clamping across full temperature range, preventing controller latch-up or gate oxide damage during lightning-induced surges. |
Use Scenario: Safeguarding input terminals of high-side load switches (e.g., HS2950P) in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient shunt that clamps before internal FET breakdown, extending switch lifetime under repeated EOS stress. Use Value: Enables use of lower-voltage-rated, cost-optimized load switches while meeting IEC 61000-4-5 surge immunity requirements. |
| IoT Edge Node Power Bus Protection | Notebook/Tablet Main Power Rail Protection |
|
Use Scenario: Securing 22V auxiliary rails powering cellular modems or sensor hubs in battery-backed IoT gateways. IC Role / Device Role / Timing Role: Single-device solution for combined ESD, EFT, and surge protection on shared power domains. Use Value: Eliminates need for multi-stage TVS+MOV designs, reducing BOM count and PCB area by >40% versus discrete alternatives. |
Use Scenario: Protecting main system power input (e.g., barrel jack or USB-C port) in thin-client notebooks and detachable tablets. IC Role / Device Role / Timing Role: Compact, low-profile suppressor mounted adjacent to input connector to minimize loop inductance. Use Value: 1.6×1.6mm DFN footprint fits tight layout constraints while delivering 40A surge capability required for portable device safety certification. |
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 and DFN 1.6×1.6mm package; differs only in tape-and-reel packaging (3,000 pcs/reel vs. SC190CIMLTRT's standard reel quantity) | No functional difference; same pinout, thermal profile, and layout requirements | Select TDS2211P.C when procurement volume aligns with 3k-reel logistics or distributor stock availability |
| uClamp2411ZA | 24V working voltage, ±30kV ESD, but lower 20A IPP rating and higher 33V clamping - uses silicon avalanche diode, not FET-shunt architecture | Better suited for CC/SBU lines in USB-C; insufficient for 22V VBUS due to clamping margin and surge rating mismatch | Not a direct alternative for SC190CIMLTRT's VBUS role; consider only for auxiliary signal-line protection where lower IPP suffices |
Compared with TDS2211P.C, SC190CIMLTRT offers identical protection performance and mechanical fit; compared with uClamp2411ZA, SC190CIMLTRT provides superior clamping stability, higher surge rating, and FET-based thermal resilience - making it the only validated option for 22V power rail EOS hardening.
Availability
SC190CIMLTRT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch interfaces, and IoT edge node power buses requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for SC190CIMLTRT 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 SC190CIMLTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-voltage, high-energy EOS applications where clamping stability and temperature independence are critical.
FAQ
What is the exact clamping voltage specification for SC190CIMLTRT at 40A surge current?
The SC190CIMLTRT clamps at 27.6–28V under 40A peak pulse current (tp = 1.2/50μs voltage + 8/20μs current combination waveform, RS = 2Ω). This value is guaranteed across –40°C to +125°C and reflects the device's FET-based architecture, which maintains near-constant clamping independent of current magnitude - a key differentiator from standard TVS diodes.
Does SC190CIMLTRT require a thermal pad on the PCB for heat dissipation?
No, SC190CIMLTRT does not require a thermal pad. Its FET-based architecture dissipates surge energy primarily through conduction rather than junction heating, and the datasheet explicitly states "no thermal pad is needed." Layout best practice emphasizes low-inductance grounding via all three GND pins (1, 2, 3) and direct routing of IN pins (4, 5, 6) to the protected line.
Can SC190CIMLTRT be used to protect USB SuperSpeed differential pairs (TX/RX)?
No, SC190CIMLTRT is not suitable for USB SuperSpeed data lines. Its 175pF junction capacitance would severely degrade signal integrity on high-speed differential channels. For SSTX+/SSTX– and SSRX+/SSRX– lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF), while SC190CIMLTRT is intended exclusively for 22V power or single-ended I/O line protection.
What is the reverse leakage current of SC190CIMLTRT at its rated working voltage?
At VRWM = 22V and TA = 25°C, SC190CIMLTRT exhibits a reverse leakage current of 130–600nA across the IN-to-GND path. This ultra-low leakage ensures minimal standby power loss in always-on industrial or battery-powered applications, and remains within specification up to +125°C per the datasheet's temperature curves.
Is SC190CIMLTRT pin-compatible with other Semtech TDS devices like TDS2401P?
No, SC190CIMLTRT is not pin-compatible with TDS2401P. While both are 6-pin DFN TDS devices, TDS2401P has a different pin configuration (e.g., dedicated enable/control pins) and targets 24V systems with distinct trigger thresholds. SC190CIMLTRT uses a fixed 3-pin GND / 3-pin IN layout optimized for passive, high-current shunting - confirmed by its pinout diagram and PCB land pattern.
SC190CIMLTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V, 2.6V, 2.7V, 2.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 300mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MLP (3x3)
SC190CIMLTRT FAQ
1.How can I place an order for SC190CIMLTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC190CIMLTRT 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 SC190CIMLTRT reliable?
The price and inventory of SC190CIMLTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC190CIMLTRT is usually 5 days.
3.What payment methods are accepted for SC190CIMLTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC190CIMLTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC190CIMLTRT?
SC190CIMLTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC190CIMLTRT 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 SC190CIMLTRT?
For technical support, including SC190CIMLTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC190CIMLTRT requirements.
6.How does Aetrix verify that SC190CIMLTRT is sourced from the original manufacturer or authorized distributors?
All SC190CIMLTRT 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 SC190CIMLTRT meets industry standards.
7.What is the process for return or replacement of SC190CIMLTRT?
All SC190CIMLTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC190CIMLTRT, 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 SC190CIMLTRT part is unused and in its original packaging.
Return procedure for SC190CIMLTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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