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Semtech Corporation SC5012BQMLTRT
- Part No.:
- SC5012BQMLTRT
- Manufacturer:
- Semtech Corporation
- Category:
- LED Drivers
- Package:
- -
- Datasheet:
-
SC5012BQMLTRT.pdf
- Description:
- IC LED DRVR CTRL PWM 150MA 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,697
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Product details
Overview
SC5012BQMLTRT 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), 27.6V clamping at 40A, 20mΩ dynamic resistance, and 175pF junction capacitance - enabling robust USB Type-C PD bus protection in industrial and portable systems.
For engineers reviewing the SC5012BQMLTRT datasheet, pinout, applications, or equivalent options, key selection criteria include its constant clamping voltage across temperature and current, low RDYN, DFN-6 package footprint, and FET-based shunt architecture - critical for protecting load switches and USB PD controllers against lightning surges and ESD without thermal derating penalties.
Technical Context
The SC5012BQMLTRT uses a surge-rated MOSFET as the primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains stable (27.5–28V) from 24A to 40A and across –40°C to +125°C due to decreasing RDS(on) under surge conditions.
It operates with a 22V reverse stand-off voltage (VRWM) and 27.9V typical breakdown (VBR), supports ±4kV EFT per IEC 61000-4-4, and dissipates energy via conduction rather than junction heating - eliminating thermal runaway risk and enabling reliable operation in high-ambient environments like industrial equipment and IoT gateways.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-Off Voltage | 22 V - defines maximum continuous operating voltage on protected line without leakage activation |
| Clamping Voltage (40A, 8/20μs) | 27.6 V - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surge |
| Peak Pulse Current | 40 A - meets IEC 61000-4-5 Level 4 surge immunity for industrial power inputs and USB PD bus lines |
| Dynamic Resistance | 20 mΩ - enables near-constant clamping by minimizing I×R rise across full surge current range |
| Junction Capacitance | 175 pF - compatible with DC/low-speed power rails; not intended for high-speed data lines (e.g., USB SS) |
| ESD Withstand | ±30 kV contact & air - exceeds IEC 61000-4-2 Level 4, suitable for handheld and exposed connector interfaces |
| Operating Temperature | –40°C to +125°C - supports deployment in automotive-adjacent industrial enclosures and outdoor IoT nodes |
Pinout & Package
SC5012BQMLTRT is housed in a RoHS-compliant DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with wettable flanks. The package features three dedicated ground terminals (Pins 1–3) and three parallel input terminals (Pins 4–6) to minimize parasitic inductance and maximize surge current sharing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected to solid ground plane via multiple vias for full 40A rating |
| Pins 4, 5, 6 | IN | Parallel-connected input node for protected bus; all three pins carry surge current equally to reduce current density and thermal stress |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Replaces PN-junction TVS with active MOSFET switch, enabling flat clamping vs. current/temperature - eliminates design margin inflation for thermal derating |
| Constant clamping voltage | 27.5–28V over 24–40A and –40°C to +125°C - guarantees consistent protection margin for 24V system components without recalculating worst-case thresholds |
| Low dynamic resistance | 20 mΩ - reduces voltage overshoot during fast-rising transients (e.g., ESD) and improves energy diversion efficiency |
| DFN-6 footprint | 1.6 mm × 1.6 mm area - saves >60% board space versus SO-8 or SOT-23 TVS alternatives while maintaining 1120W peak power handling |
| UL 94V-0 molding compound | Flame-retardant encapsulation - satisfies safety requirements for industrial and consumer end-equipment certifications |
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 suppressor placed between connector and PD controller/load switch, clamping transients before they reach sensitive silicon. Use Value: Maintains 27.6V clamping at 40A and 125°C - avoids overvoltage damage to 24V-rated PD controllers where conventional TVS would exceed 35V at elevated temperature. |
Use Scenario: Safeguarding input pins of high-side load switches (e.g., HS2950P) in remote meters, PLC I/O modules, and robotics power stages. IC Role / Device Role / Timing Role: Front-end transient shunt that limits voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents latch-up or permanent failure of the load switch during 1kV/42Ω IEC 61000-4-5 surges by holding clamping below 28V - well under typical 30V absolute max ratings. |
| IoT Gateway Power Rail Protection | Storage Device DC Power Input Protection |
Use Scenario: Securing 22V auxiliary power inputs on cellular/Wi-Fi gateways deployed in uncontrolled environments (e.g., street cabinets, agricultural sensors). IC Role / Device Role / Timing Role: Single-device solution for combined ESD, EFT, and surge protection on main DC input, replacing multi-stage TVS+MOV designs. Use Value: Delivers ±4kV EFT immunity and 40A surge handling in 1.6 mm² - enables compact, fanless enclosure designs without sacrificing reliability certification margins. |
Use Scenario: Protecting SATA or NVMe SSD power inputs (3.3V/5V/12V rails) against hot-plug transients and backplane coupling in enterprise storage enclosures. IC Role / Device Role / Timing Role: Secondary-level rail protector downstream of bulk filtering, ensuring clean shutdown during EOS events without false triggering. Use Value: 130–600 nA leakage at 22V minimizes standby power loss; stable clamping prevents data corruption or firmware lockup caused by rail collapse during transient events. |
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 with identical revision history and qualification. | No functional difference; used interchangeably in BOMs where part numbering conventions differ by distributor or internal SKU logic. | Select TDS2211P.C if sourcing through authorized Semtech channels requiring exact factory orderable number. |
| uClamp2411ZA.TCT | Zener-based TVS with 24V VRWM, 38.5V VC @ 24A, higher dynamic resistance (>100 mΩ), and significant clamping voltage rise with temperature. | Suitable only for lower-energy threats (e.g., CC/SBU lines); cannot replace SC5012BQMLTRT on 22V power rails requiring 40A surge capability. | Choose uClamp2411ZA.TCT only for secondary signal-line protection where clamping stability and surge rating are non-critical. |
Compared with TDS2211P.C (identical device) and uClamp2411ZA.TCT (Zener TVS), SC5012BQMLTRT offers superior thermal stability and lower clamping - making it the sole viable option for 22V power rail protection where 40A surge immunity and <28V clamping at 125°C are mandatory.
Availability
SC5012BQMLTRT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, IoT gateway power rails, and storage device DC inputs requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for SC5012BQMLTRT 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 analog and mixed-signal ICs for precision sensing, protection, and connectivity solutions.
The Transient Diverting Suppressor (TDS) product line was developed to overcome thermal and clamping limitations of traditional TVS diodes - targeting high-reliability industrial, computing, and USB ecosystem applications demanding stable surge protection across wide temperature and current ranges.
FAQ
What is the primary protection function of the SC5012BQMLTRT?
The SC5012BQMLTRT functions as a Transient Diverting Suppressor that actively shunts high-energy electrical overstress (EOS) events - including ESD, EFT, and lightning surges - away from sensitive downstream circuitry. Unlike passive TVS diodes, it uses a triggered MOSFET to achieve stable 27.6V clamping at 40A, making SC5012BQMLTRT ideal for safeguarding 22V power rails in USB PD and industrial systems.
Does SC5012BQMLTRT require external bias or control signals to operate?
No, SC5012BQMLTRT is fully autonomous and requires no external power, bias, or enable signals. Its internal precision trigger circuit activates the shunt FET automatically when transient voltage exceeds the breakdown threshold. This self-contained operation makes SC5012BQMLTRT suitable for always-on protection in battery-backed or unpowered interface scenarios - a key advantage over controlled protection ICs.
Can SC5012BQMLTRT be used on high-speed data lines such as USB SuperSpeed differential pairs?
No, SC5012BQMLTRT is not suitable for high-speed data lines. With 175pF junction capacitance, it would severely degrade signal integrity on USB 3.x, PCIe, or DisplayPort lanes. SC5012BQMLTRT is specifically engineered for DC or low-frequency power and control lines (e.g., VBUS, CC, SBU, load switch inputs). For data line protection, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF).
How does SC5012BQMLTRT's clamping performance compare to standard TVS diodes at elevated temperatures?
SC5012BQMLTRT maintains a nearly constant 27.6V clamping voltage from –40°C to +125°C at 40A, whereas conventional TVS diodes exhibit rising clamping (e.g., +5–10V increase at 125°C) due to positive temperature coefficient of dynamic resistance. This stability ensures SC5012BQMLTRT reliably protects 24V-rated ICs across full industrial temperature range - a critical differentiator validated in Semtech's TDS2211P characterization data.
What PCB layout practices are essential to achieve SC5012BQMLTRT's rated 40A surge performance?
To achieve full 40A rating, all three GND pins (1–3) and all three IN pins (4–6) must be connected - with GND pins tied to a solid ground plane using ≥3 thermal vias each, and IN pins routed via short, wide traces directly from the protected connector. SC5012BQMLTRT must be placed within 5 mm of the entry point; longer traces add inductance that degrades clamping response and may cause voltage overshoot exceeding SC5012BQMLTRT's specified limits.
SC5012BQMLTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- DC DC Controller
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 45V
- Voltage - Output:
- 65V
- Current - Output / Channel:
- 150mA
- Frequency:
- 200kHz ~ 2.2MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
SC5012BQMLTRT FAQ
1.How can I place an order for SC5012BQMLTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC5012BQMLTRT 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 SC5012BQMLTRT reliable?
The price and inventory of SC5012BQMLTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC5012BQMLTRT is usually 5 days.
3.What payment methods are accepted for SC5012BQMLTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC5012BQMLTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC5012BQMLTRT?
SC5012BQMLTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC5012BQMLTRT 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 SC5012BQMLTRT?
For technical support, including SC5012BQMLTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC5012BQMLTRT requirements.
6.How does Aetrix verify that SC5012BQMLTRT is sourced from the original manufacturer or authorized distributors?
All SC5012BQMLTRT 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 SC5012BQMLTRT meets industry standards.
7.What is the process for return or replacement of SC5012BQMLTRT?
All SC5012BQMLTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC5012BQMLTRT, 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 SC5012BQMLTRT part is unused and in its original packaging.
Return procedure for SC5012BQMLTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC5012BQMLTRT Tags
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