My Inquiry
My Account
Semtech Corporation SC4510ITSTRT
.jpg)
- Part No.:
- SC4510ITSTRT
- Manufacturer:
- Semtech Corporation
- Category:
- DC DC Switching Controllers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SC4510ITSTRT.pdf
- Description:
- IC REG CTRLR BUCK 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,531
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SC4510ITSTRT 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, Type-C VBUS, and load switch inputs in industrial and portable electronics.
For engineers reviewing the SC4510ITSTRT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance, DFN-6 package layout compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge standards.
Technical Context
The SC4510ITSTRT 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 - across 24–40A and −40°C to +125°C due to decreasing RDS(on) under surge.
It operates with a 22V reverse stand-off voltage and 27.9V max breakdown, supports unsymmetrical line protection per IEC 61000-4-5 (±1kV, 1.2/50μs), and delivers 1120W peak pulse power. Its 175pF junction capacitance at 22V/1MHz enables use on moderate-speed power rails without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave, RS = 2Ω) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| 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) - provides robust handling protection during assembly and end-user operation. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V/1MHz - suitable for VBUS and power-line protection without degrading PD negotiation or load-switch timing. |
Pinout & Package
SC4510ITSTRT is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon). All six terminals must be connected for full 40A rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be tied to low-inductance ground plane via multiple vias. |
| 4, 5, 6 | IN | Protected input node - connects directly to VBUS or power rail; all three pins must be shorted externally for rated 40A performance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V across 24–40A and −40°C to +125°C - eliminates derating uncertainty vs. traditional TVS. |
| FET-based shunt topology | Surge energy diverted through low-RDS(on) channel instead of PN-junction - avoids thermal runaway and improves reliability. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz bursts) - protects against repetitive switching noise in industrial motor drives and PLCs. |
| Low leakage | ≤600nA at 22V - prevents battery drain in always-on IoT and metering applications. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V–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, responding within nanoseconds to ESD/EFT/surge events. Use Value: Maintains 27.5–28V clamping across temperature and current - prevents overvoltage damage to sensitive PD PHY and MCU logic. |
Use Scenario: Shielding enable and input pins of high-side load switches (e.g., HS2950P) in remote meters, robotics, and factory automation. IC Role / Device Role / Timing Role: Front-end transient guard that limits voltage seen by the load switch's internal FET gate oxide and sense circuitry. Use Value: Keeps clamping <28V at 40A - avoids gate-oxide rupture and overcurrent latch-up in integrated e-fuses operating near 22V rails. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
|
Use Scenario: Securing 22V auxiliary power inputs in battery-backed smart sensors and wireless gateways exposed to field ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Standalone transient diverter on main DC input, coordinated with upstream fuse and downstream LDO. Use Value: Delivers 1120W peak power handling in 1.6×1.6mm footprint - saves >50% board area vs. discrete TVS+MOV solutions. |
Use Scenario: Safeguarding 22V hold-up capacitors and backup regulators in NVMe SSDs and enterprise HDD enclosures subjected to hot-plug and system-level surges. IC Role / Device Role / Timing Role: Fast-acting shunt device placed immediately after connector to prevent transient propagation into storage controller power domains. Use Value: 175pF capacitance avoids resonance with bulk capacitance - preserves power-rail stability during surge recovery without oscillation. |
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" - direct Semtech second-source variant with identical tape-and-reel packaging (3,000 pcs/reel). | No functional difference; qualified for same USB PD, industrial, and IoT use cases. | Select when sourcing from Semtech-authorized distribution channels requiring standard part numbering convention. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A - higher clamping, no current/temperature flatness, 10× higher dynamic resistance (~200mΩ). | Limited to lower-energy surges; requires derating above 85°C and cannot meet 40A/28V requirement. | Consider only for cost-sensitive, non-critical 22V rails where clamping margin >7V is acceptable and ambient stays <70°C. |
Compared with TDS2211P.C (identical function) and SMAJ22A (conventional TVS), SC4510ITSTRT delivers superior clamping stability, 20× lower dynamic resistance, and guaranteed 40A/28V performance across full industrial temperature range - making it the preferred choice for USB PD, load switch, and high-reliability 22V power rail protection.
Availability
SC4510ITSTRT is available at Aetrix Electronics and suitable for USB Type-C power delivery interfaces, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and consistent surge performance across temperature extremes.
Supply support for SC4510ITSTRT 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 semiconductors for power management, protection, sensing, and connectivity.
The SC4510ITSTRT belongs to Semtech's Transient Diverting Suppressor (TDS) family - engineered specifically to replace conventional TVS diodes in high-voltage, high-energy EOS applications where clamping stability, temperature insensitivity, and low dynamic resistance are critical.
FAQ
What is the exact package type and dimensions of SC4510ITSTRT?
SC4510ITSTRT uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed copper pad (no thermal slug). 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 layout with multiple ground vias and direct trace routing from connector to device.
Does SC4510ITSTRT meet IEC 61000-4-5 surge immunity requirements?
Yes, SC4510ITSTRT is rated for 40A peak pulse current (8/20μs) and ±1kV (1.2/50μs, RS = 42Ω) per IEC 61000-4-5 for unsymmetrical lines. Its 27.5–28V clamping at 40A ensures protected circuits remain within safe operating limits during Level 4 industrial surge events.
How does SC4510ITSTRT differ from standard TVS diodes like SMAJ22A?
Unlike SMAJ22A - a PN-junction TVS with rising clamping voltage and high dynamic resistance - SC4510ITSTRT uses a triggered FET shunt architecture. This yields flat 27.5–28V clamping across 24–40A and −40°C to +125°C, 20mΩ dynamic resistance, and no thermal derating - confirmed in Semtech's TDS2211P datasheet Rev 2.5.
Can SC4510ITSTRT be used on USB Type-C VBUS lines with Power Delivery?
Yes, SC4510ITSTRT is explicitly validated for USB Type-C VBUS protection in Semtech's application diagrams. With 22V working voltage and 28V clamping, it safeguards PD controllers and load switches during ESD, EFT, and surge events while maintaining compatibility with USB PD 3.1 negotiation timing and voltage margins.
What is the maximum junction temperature and storage range for SC4510ITSTRT?
SC4510ITSTRT has a junction and storage temperature range of −55°C to +150°C, with an operating temperature range of −40°C to +125°C. Its clamping voltage remains stable across this full range - a key differentiator from conventional TVS devices whose VC increases significantly above 85°C.
SC4510ITSTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4.75V ~ 16V
- Frequency - Switching:
- 100kHz ~ 1MHz
- Duty Cycle (Max):
- 90%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- -
- Control Features:
- Enable, Frequency Control, Power Good, Soft Start
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SC4510ITSTRT FAQ
1.How can I place an order for SC4510ITSTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC4510ITSTRT 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 SC4510ITSTRT reliable?
The price and inventory of SC4510ITSTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC4510ITSTRT is usually 5 days.
3.What payment methods are accepted for SC4510ITSTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC4510ITSTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC4510ITSTRT?
SC4510ITSTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC4510ITSTRT 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 SC4510ITSTRT?
For technical support, including SC4510ITSTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC4510ITSTRT requirements.
6.How does Aetrix verify that SC4510ITSTRT is sourced from the original manufacturer or authorized distributors?
All SC4510ITSTRT 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 SC4510ITSTRT meets industry standards.
7.What is the process for return or replacement of SC4510ITSTRT?
All SC4510ITSTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC4510ITSTRT, 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 SC4510ITSTRT part is unused and in its original packaging.
Return procedure for SC4510ITSTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC4510ITSTRT Tags
-
UCC28C45DR
Texas Instruments
-
UCC28C40DR
Texas Instruments
-
UCC28C43DR
Texas Instruments
-
ZXSC410E6TA
Diodes Incorporated
-
LM3524DMX/NOPB
Texas Instruments
-
LM3489MMX/NOPB
Texas Instruments
-
MIC2102YML-TR
Microchip Technology
-
LM5148RGYR
Texas Instruments
-
TL598CDR
Texas Instruments
-
LM5155DSSR
Texas Instruments
-
LM25085MYX/NOPB
Texas Instruments
-
UCC2813DTR-0
Texas Instruments
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
