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Vishay Siliconix SIC413DB
- Part No.:
- SIC413DB
- Manufacturer:
- Vishay Siliconix
- Package:
- Datasheet:
-
SIC413DB.pdf
- Description:
- EVAL BOARD FOR SIC413
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Product details
Overview
SIC413DB from Vishay is a highly integrated synchronous buck regulator in the microBUCK® family, designed for point-of-load DC/DC conversion with integrated power MOSFETs, programmable soft-start/soft-shutdown, and output over-voltage protection. It operates from 4.75 V to 26 V input, delivers up to 4 A output current, achieves >93 % peak efficiency at 12 VIN/3.3 VOUT, and supports 200 kHz to 1 MHz switching frequency - ideal for compact server and networking power supplies.
For engineers reviewing the SIC413DB datasheet, SIC413DB pinout, SIC413DB application, or SIC413DB equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options for embedded and consumer power design.
Technical Context
The SIC413DB implements pseudo-fixed-frequency adaptive on-time control with valley-current limiting and zero-cross detection for fast transient response and stable operation across wide VIN/VOUT ranges. Its internal 1 % reference voltage, integrated bootstrap diode, and output ceramic capacitor support (no ESR requirement) enable low-component-count, high-reliability designs.
It integrates dual N-channel MOSFETs, a precision feedback comparator, power-good signaling, under-voltage lockout, over-temperature protection, and programmable soft-start via external capacitor - all within a thermally enhanced MLPQ55-32L package optimized for thermal performance in dense PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.75 V to 26 V - supports 5 V, 12 V, and 24 V intermediate bus architectures without external pre-regulation. |
| Output Voltage Range | 0.6 V to 5.5 V - adjustable via external resistor divider; enables core, I/O, and peripheral rail generation. |
| Max Output Current | 4 A continuous - sufficient for FPGA I/O banks, ASIC auxiliary rails, and multi-core SoC subsystems. |
| Switching Frequency | 200 kHz to 1 MHz - user-selectable via TON pin; balances efficiency, size, and EMI in space-constrained designs. |
| Peak Efficiency | 93 % at 12 VIN/3.3 VOUT/3 A - reduces thermal load and improves system-level power density vs. competitive solutions. |
| Protection Features | OVP, UVP, OCP, SCP, OTP - comprehensive fault coverage eliminates need for external supervision circuitry. |
| Soft-Start Control | Programmable via external capacitor - prevents inrush current and ensures controlled power-up sequencing. |
Pinout & Package
Package: MLPQ55-32L (5 mm × 5 mm × 0.9 mm, exposed thermal pad). Thermally optimized for high-power density applications with low junction-to-board thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary input supply | Accepts 4.75–26 V; connects to bulk input capacitor and feeds internal LDOs and gate drivers. |
| LX | Switch node | Drives external output inductor; requires low-inductance layout to minimize switching losses and EMI. |
| PGND | Power ground | High-current return path for MOSFETs and inductor; must be connected to thermal pad for optimal thermal performance. |
| FB | Feedback input | Monitors output voltage via resistor divider; sets regulated VOUT with 1 % internal reference accuracy. |
| EN/PSV | Enable / Power-save mode control | Active-high logic input; enables device or forces light-load power-save mode when pulled low. |
| PGOOD | Power-good indicator | Open-drain output signals valid regulation (±10 % window); used for system sequencing and fault reporting. |
| SS | Soft-start timing | Connects external capacitor to set ramp time; controls output voltage rise rate and inrush current. |
| BST | Bootstrap supply | Provides gate drive voltage for high-side MOSFET; requires 0.1 µF ceramic capacitor to LX. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power MOSFETs | Eliminates external high- and low-side FETs, reducing BOM count, layout area, and gate-drive complexity. |
| Pseudo-Fixed Adaptive On-Time Control | Enables stable operation across wide input/output ratios without loop compensation components. |
| Output Ceramic Capacitor Support (No ESR Requirement) | Allows use of small, low-profile MLCCs instead of bulky electrolytics - critical for ultra-thin consumer devices. |
| Thermally Enhanced MLPQ55-32L Package | Delivers 23.2 °C lower case temperature than competitor at 3 A load - extends reliability and enables fanless operation. |
| Programmable Soft-Start & Soft-Shutdown | Prevents voltage overshoot during startup and minimizes output droop during shutdown - essential for sequenced power systems. |
Applications
| Desktop & Server Computing | Networking Equipment |
|---|---|
Use Scenario: Point-of-load regulation for CPU I/O, memory buffers, and PCIe add-in cards in 1U servers. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering tightly regulated 1.2 V, 1.8 V, or 3.3 V rails. Use Value: 93 % efficiency and 23.2 °C cooler operation reduce thermal stress in high-density chassis and eliminate need for supplemental airflow. |
Use Scenario: Powering Ethernet PHYs, switch fabric controllers, and packet processing ASICs in 1 GbE/10 GbE switches. IC Role / Device Role / Timing Role: High-efficiency, fast-transient POL converter supporting dynamic load steps up to 3 A/µs. Use Value: Adaptive on-time control and valley-current limiting ensure <50 mV output deviation during 0.2 A → 4 A load transients. |
| Digital Consumer Electronics | Embedded Industrial Systems |
Use Scenario: Regulating power for SoCs and display interfaces in smart TVs, STBs, and streaming boxes. IC Role / Device Role / Timing Role: Compact, low-noise buck converter supplying 0.9 V–3.3 V rails with minimal external components. Use Value: MLPQ55-32L footprint and ceramic-capacitor compatibility enable sub-100 mm² solution size - critical for slim bezel designs. |
Use Scenario: Powering ARM-based controllers, sensor hubs, and communication modules in factory automation edge nodes. IC Role / Device Role / Timing Role: Robust, self-protected DC/DC regulator operating across industrial temperature range with no external supervision. Use Value: Integrated OVP, OTP, and UVP eliminate discrete protection ICs - simplifying certification and improving long-term field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SiC414CD | Same MLPQ44-28 package (4 mm × 4 mm), 6 A rating, 3 V–28 V input, fixed 500 kHz frequency. | Better suited for higher-current loads (>4 A) and smaller board area; lacks programmable frequency and soft-shutdown. | Select SiC414CD when board space is constrained and 6 A capability is required; verify thermal margin at full load. |
| SiP12109 | 3 mm × 3 mm MLP33-16L package, 4 A rating, 4.5 V–16 V input, 400 kHz–1.5 MHz programmable frequency. | Optimized for low-voltage input (e.g., 5 V or 12 V bus), higher switching frequencies, and ultra-compact footprints. | Choose SiP12109 for battery-powered or USB-PD-derived systems where input voltage ≤16 V and size is paramount. |
Compared with SiC414CD and SiP12109, the SIC413DB offers broader input range (up to 26 V), programmable soft-shutdown, and superior thermal performance in 5 mm × 5 mm form factor - making it optimal for industrial and telecom infrastructure where input variability and reliability are critical.
Availability
SIC413DB is available at Aetrix Electronics and suitable for desktop/server computing, networking equipment, and digital consumer electronics requiring stable component supply, long lifecycle support, and consistent parametric performance across production batches.
Supply support for SIC413DB 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
Vishay Intertechnology, Inc. is a global manufacturer of discrete semiconductors and passive components, founded in 1962 and headquartered in Malvern, PA.
The SIC413DB belongs to Vishay's microBUCK® family of highly integrated synchronous buck regulators, engineered specifically for high-efficiency, low-footprint point-of-load power delivery in computing, communications, and consumer electronics.
FAQ
What is the maximum input voltage supported by the SIC413DB?
The SIC413DB supports an input voltage range of 4.75 V to 26 V. This allows direct operation from common intermediate bus voltages including 5 V, 12 V, and 24 V without external pre-regulation. The upper limit of 26 V provides margin for transient spikes in industrial and telecom environments, ensuring robust operation per Vishay's published specifications.
Does the SIC413DB require an external bootstrap capacitor?
Yes, the SIC413DB requires a 0.1 µF ceramic capacitor between the BST and LX pins to properly bias the high-side MOSFET gate driver. This capacitor must be placed close to the IC with short, low-inductance traces. The integrated bootstrap diode eliminates the need for an external diode, simplifying layout while maintaining reliable high-side drive across the full operating range of the SIC413DB.
What protection features are built into the SIC413DB?
The SIC413DB integrates output over-voltage protection (OVP), under-voltage lockout (UVLO), output over-current protection (OCP), short-circuit protection (SCP), and over-temperature protection (OTP). These features operate autonomously without external components, enabling safe, self-protected operation in unattended systems. Power-good (PGOOD) signaling further supports system-level fault monitoring and sequencing for the SIC413DB.
Can the SIC413DB be used with ceramic output capacitors only?
Yes, the SIC413DB is explicitly designed to operate with ceramic output capacitors and has no ESR requirement. This allows designers to use compact, high-reliability MLCCs instead of electrolytic or polymer capacitors - reducing solution size, improving lifetime, and eliminating ESR-related stability concerns. The adaptive on-time control architecture ensures stable regulation regardless of capacitor ESR, as confirmed in Vishay's application data for the SIC413DB.
What is the thermal performance advantage of the SIC413DB versus competing buck regulators?
The SIC413DB demonstrates a 23.2 °C lower case temperature than a leading competitor under identical conditions (12 VIN, 3.3 VOUT, 3 A load), due to its thermally optimized MLPQ55-32L package and efficient power stage. This directly translates to higher reliability, extended operational lifetime, and reduced need for heatsinking or forced air cooling - a key differentiator for the SIC413DB in thermally constrained applications like 1U servers and sealed consumer enclosures.
SIC413DB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- microBUCK®
- Packaging:
- Box
- Product Status:
- Obsolete
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 3.3V
- Voltage - Input:
- 4A
- Regulator Topology:
- 4.75V ~ 26V
- Frequency - Switching:
- Buck
- Contents:
- 500kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- SiC413
SIC413DB FAQ
1.How can I place an order for SIC413DB through Aetrix?
Please submit a Request for Quotation (RFQ) for SIC413DB 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 SIC413DB reliable?
The price and inventory of SIC413DB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIC413DB is usually 5 days.
3.What payment methods are accepted for SIC413DB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIC413DB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIC413DB?
SIC413DB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIC413DB 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 SIC413DB?
For technical support, including SIC413DB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIC413DB requirements.
6.How does Aetrix verify that SIC413DB is sourced from the original manufacturer or authorized distributors?
All SIC413DB 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 SIC413DB meets industry standards.
7.What is the process for return or replacement of SIC413DB?
All SIC413DB units undergo pre-shipment inspection (PSI). If there is an issue with SIC413DB, 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 SIC413DB part is unused and in its original packaging.
Return procedure for SIC413DB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SIC413DB Tags
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DFR0379
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DFR0205
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