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Vishay Siliconix SIC464ED-T1-GE3
- Part No.:
- SIC464ED-T1-GE3
- Manufacturer:
- Vishay Siliconix
- Package:
- PowerPAK® MLP55-27
- Datasheet:
-
SIC464ED-T1-GE3.pdf
- Description:
- IC REG BCK ADJ POWERPAK MLP55-27
- Quantity:
- Payment:
- Shipping:
Inventory:18,003
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Product details
Overview
SIC464ED-T1-GE3 from Vishay Siliconix is a 2 A synchronous buck DC/DC converter with integrated high-side and low-side MOSFETs, operating from 4.5 V to 60 V input and delivering adjustable output down to 0.8 V. It features voltage-mode constant-on-time (COT) control, 98 % peak efficiency, ±1 % output voltage accuracy over –40 °C to +125 °C, and supports ultrasonic mode (>20 kHz) for audible-noise-sensitive applications such as industrial automation power rails.
For engineers reviewing the SIC464ED-T1-GE3 datasheet, SIC464ED-T1-GE3 pinout, SIC464ED-T1-GE3 application, or SIC464ED-T1-GE3 equivalent, key selection considerations include its 2 A current rating within the pin-compatible SiC46x family, programmable 100 kHz–2 MHz switching frequency, valley-current-limit OCP set via external resistor, and support for ceramic output capacitors without loop instability.
Technical Context
The SIC464ED-T1-GE3 implements a voltage-mode constant-on-time (COT) architecture with adaptive zero-current detection, enabling fast transient response and stable operation with low-ESR ceramic output capacitors. Its control loop uses dual feedback paths: steady-state regulation via the VFB pin (0.8 V reference) and feed-forward transient correction via the VSNS pin with externally injected ripple (VRAMP).
Power stage integration includes optimized n-channel high-side and low-side MOSFETs, with internal VDD and VDRV LDOs (5 V ±5 %), programmable soft-start (via SS pin), and three operational modes-forced CCM, power-save, or ultrasonic-selected by resistor-divider on the MODE pin and enabled/disabled via the ULTRASONIC pin tied to VDD or floating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - supports wide-range industrial and telecom inputs without pre-regulation |
| Output Current Rating | 2 A continuous - defined for SIC464 variant; matches RILIM = 60 kΩ setting per datasheet |
| Feedback Reference Voltage | 0.800 V ±0.8 % (–40 °C to +125 °C) - enables precise output programming with external resistor divider |
| Switching Frequency Range | 100 kHz to 2 MHz - set by external RfSW to AGND; independent of VIN when VCIN = VIN |
| Peak Efficiency | 98 % - achieved at mid-load with 48 VIN/5 VOUT, confirming high-power-density performance |
| Shutdown Current | 4 μA typical - enables ultra-low quiescent power in battery-backed or always-on systems |
| OCP Threshold Accuracy | ±20 % (3.2 A to 4.8 A range at TJ = –10 °C to +125 °C) - ensures reliable current limiting across temperature |
Pinout & Package
Package: PowerPAK® MLP55-27L - 5 mm × 5 mm, 27-pin lead (Pb)-free thermally enhanced QFN with exposed thermal pad (PGND-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCIN (1) | Bias supply input for internal regulators | Accepts 4.5–60 V; decoupled with 0.1 μF to AGND; can be supplied separately >5 V to reduce LDO losses |
| PGOOD (2) | Open-drain power-good indicator | Active-high when VOUT is within ±10 % regulation; requires external pull-up; 7.5 Ω typical on-resistance |
| EN (3) | Enable control input | High-voltage compatible (0–60 V); logic high ≥1.35 V enables regulator; internal 7 MΩ pull-down prevents floating |
| BOOT (4) | High-side gate driver bootstrap node | Connected via RC network to PHASE; 4.7 Ω minimum series resistor recommended for SIC464 |
| PHASE (5,6) | Switch node return path | Direct connection to source of low-side MOSFET; critical for gate drive loop integrity and EMI control |
| VIN (7,8,29) | Main power input | Drain of high-side MOSFET; requires local high-frequency decoupling to PGND near pads |
| PGND (9,10,11,17,30) | Power ground | Low-impedance return for high-current paths; must be connected directly to thermal pad |
| SW (12,13,14) | Switch node | Connection point between high- and low-side MOSFETs; drives external inductor; high dv/dt node |
| GL (15) | Low-side gate driver output | Direct drive signal to low-side MOSFET gate; not user-accessible; internal only |
| VDRV (16) | Internal gate driver supply | 5.3 V typical LDO output; decoupled with 4.7 μF to PGND; can be bypassed with external 5 V supply in Mode 3/4 |
| ULTRASONIC (18) | Ultrasonic mode enable | Tied to VDD enables >20 kHz minimum frequency in DCM; floating disables ultrasonic mode |
| SS (19) | Soft-start timing capacitor | Charged by 5 μA internal current source; sets ramp time for controlled VOUT rise and inrush limiting |
| VSNS (20) | Ripple injection feedback | Accepts externally generated VRAMP signal (100–900 mV) to stabilize loop with ceramic capacitors |
| COMP (21) | Error amplifier output | Connects external RCOMP/CCOMP network; transconductance = 0.3 mS; sink/source = 20 μA |
| VFB (22) | Output voltage feedback input | Compares against 0.8 V reference; bias current = 2 nA; determines final output accuracy and regulation |
| AGND (23,28) | Analog ground reference | Separate from PGND; must be shorted with wide trace; connects all analog circuitry and decoupling caps |
| fSW (24) | Frequency set input | Resistor to AGND sets on-time; fSW = 100 kHz–2 MHz; no VIN dependency when VCIN = VIN |
| ILIMIT (25) | Current limit set input | Resistor to AGND programs valley OCP threshold; 60 kΩ yields 4 A nominal for SIC464 |
| VDD (26) | Internal bias supply output | 5 V ±5 % LDO output; decoupled with 1 μF to AGND; UVLO threshold = 4.25 V (rising) |
| MODE (27) | Operating mode select | Resistor to AGND selects among four configurations: power-save/forced CCM, internal/external VDRV |
Key Features
| Feature | Design Value |
|---|---|
| Wide input voltage range | 4.5 V–60 V single-supply operation eliminates need for intermediate pre-regulators in industrial and telecom systems |
| Ultrafast transient response | Enabled by dual-loop COT architecture and VRAMP injection, allowing <10 μs recovery with minimal output capacitance |
| Configurable light-load efficiency | Diode emulation + frequency foldback in power-save mode reduces 235 μA operating current and extends battery life |
| Full fault protection suite | OCP, OVP (20 % above VREF), UVP (–80 % below VREF), OTP (150 °C trip), and auto-retry SCP ensure robust field reliability |
| Flexible sequencing & monitoring | Pre-bias start-up, output voltage tracking, PGOOD flag, and programmable soft-start simplify multi-rail system integration |
Applications
| Industrial Automation Power Rails | Telecom Remote Radio Units |
|---|---|
Use Scenario: Providing isolated 3.3 V/2 A bias for PLC I/O modules operating from unregulated 24–48 V DC bus. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering tightly regulated output with fast load-step response to digital I/O transients. Use Value: ±1 % output accuracy over –40 °C to +105 °C ambient ensures sensor and ADC reference stability without recalibration. | Use Scenario: Generating 12 V/2 A for RF power amplifiers in 5G small-cell base stations powered from 48 V PoE or battery backup. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter with ultrasonic mode disabled to allow sub-100 kHz operation during deep sleep. Use Value: 4 μA shutdown current extends battery runtime during idle periods while maintaining fast wake-up capability. |
| Home Automation Hubs | Robotics Motor Control Logic Rails |
Use Scenario: Supplying 5 V/2 A to MCU, Wi-Fi SoC, and sensor interface in smart home gateways powered from wall adapters. IC Role / Device Role / Timing Role: Compact, thermally efficient buck regulator supporting ceramic output capacitors to minimize board space and cost. Use Value: MLP55-27L package delivers 2 A in 25 mm² footprint with 2 °C/W junction-to-case thermal resistance for fanless enclosures. | Use Scenario: Powering 3.3 V logic and gate drivers for BLDC motor controllers in collaborative robots using 24 V battery input. IC Role / Device Role / Timing Role: Robust POL converter with OVP/UVP/OTP protection to survive motor back-EMF transients and ESD events. Use Value: Output undervoltage protection with auto-retry prevents lockup during brief brownouts caused by motor startup surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z (Monolithic Power Systems) | 36 V max input, 0.6 A output, fixed 2 MHz fSW, no ultrasonic mode or VRAMP support | Limited to low-power consumer IoT; lacks OVP/UVP and thermal hysteresis | Select for cost-sensitive, low-current designs where full SiC464 protection and wide VIN are unnecessary |
| TPS54202DRCT (Texas Instruments) | 60 V max input, 2 A output, Eco-mode™ instead of ultrasonic, no valley-current OCP, requires external bootstrap diode | Compatible for industrial 2 A rails but lacks SiC464's ceramic-capacitor stability and integrated BOOT resistor | Choose when TI ecosystem compatibility or WEBENCH design support is prioritized over SiC464's loop stability with all-ceramic outputs |
Compared with MP2451DT-LF-Z and TPS54202DRCT, the SIC464ED-T1-GE3 provides superior thermal robustness (150 °C OTP with 35 °C hysteresis), guaranteed ceramic-capacitor stability via VSNS-based ripple injection, and pin-compatible scalability within the SiC46x family for future current upgrades.
Availability
SIC464ED-T1-GE3 is available at Aetrix Electronics and suitable for industrial automation power rails, telecom remote radio units, home automation hubs, and robotics motor control logic rails requiring stable component supply, long-term lifecycle assurance, and Vishay-qualified automotive-grade reliability.
Supply support for SIC464ED-T1-GE3 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 Siliconix is a global leader in discrete semiconductors and passive components, specializing in high-reliability power management solutions for industrial, automotive, and computing markets.
The SiC46x product line was designed specifically for wide-input, high-efficiency synchronous buck conversion in space-constrained industrial and telecom systems, emphasizing thermal performance, ceramic-capacitor compatibility, and comprehensive fault protection.
FAQ
What is the maximum input voltage rating for the SIC464ED-T1-GE3?
The SIC464ED-T1-GE3 has an absolute maximum input voltage (VIN) rating of 66 V, with recommended operating range from 4.5 V to 60 V. Exceeding 60 V may trigger overvoltage protection or degrade long-term reliability. The device's internal high-side MOSFET and gate drivers are characterized for stable operation up to 60 V under all temperature and load conditions specified in the datasheet.
How is the output current limit configured on the SIC464ED-T1-GE3?
The output current limit on the SIC464ED-T1-GE3 is set via an external resistor (RILIM) connected from the ILIMIT pin to AGND. For the SIC464 variant, a 60 kΩ resistor configures a nominal valley-current limit of 4 A, with actual trip threshold ranging from 3.2 A to 4.8 A across –10 °C to +125 °C junction temperature. This resistor value is validated in the Electrical Specifications table for SiC464 (Document 65124, page 5).
Does the SIC464ED-T1-GE3 support pre-bias start-up?
Yes, the SIC464ED-T1-GE3 supports pre-bias start-up, allowing the output capacitor to be pre-charged before enabling the regulator. During start-up, the device monitors the VFB pin and initiates soft-start only when VFB falls below 0.4 V, preventing reverse current flow into a pre-biased rail. This feature is explicitly documented in the "Output Voltage Tracking and Sequencing" section of the datasheet.
What package type is used for the SIC464ED-T1-GE3?
The SIC464ED-T1-GE3 uses the PowerPAK® MLP55-27L package: a 5 mm × 5 mm, 27-pin lead (Pb)-free thermally enhanced QFN with an exposed thermal pad connected to PGND. This package is shared across the entire SiC46x family (SiC461–SiC464) and enables pin-compatible scalability from 2 A to 10 A without PCB layout changes.
Can the SIC464ED-T1-GE3 operate with only ceramic output capacitors?
Yes, the SIC464ED-T1-GE3 is explicitly designed to operate stably with all-ceramic output capacitors. Its voltage-mode COT architecture uses the VSNS pin to accept externally injected ripple (VRAMP), which compensates for the near-zero ESR of ceramic capacitors. The datasheet specifies a minimum VRAMP amplitude of 100 mV and maximum of 900 mV to ensure stability across CCM, DCM, and ultrasonic modes.
SIC464ED-T1-GE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- microBUCK®
- Package/Case:
- PowerPAK® MLP55-27
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 55.2V
- Current - Output:
- 2A
- Frequency - Switching:
- 100kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerPAK® MLP55-27
SIC464ED-T1-GE3 FAQ
1.How can I place an order for SIC464ED-T1-GE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIC464ED-T1-GE3 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 SIC464ED-T1-GE3 reliable?
The price and inventory of SIC464ED-T1-GE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIC464ED-T1-GE3 is usually 5 days.
3.What payment methods are accepted for SIC464ED-T1-GE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIC464ED-T1-GE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIC464ED-T1-GE3?
SIC464ED-T1-GE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIC464ED-T1-GE3 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 SIC464ED-T1-GE3?
For technical support, including SIC464ED-T1-GE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIC464ED-T1-GE3 requirements.
6.How does Aetrix verify that SIC464ED-T1-GE3 is sourced from the original manufacturer or authorized distributors?
All SIC464ED-T1-GE3 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 SIC464ED-T1-GE3 meets industry standards.
7.What is the process for return or replacement of SIC464ED-T1-GE3?
All SIC464ED-T1-GE3 units undergo pre-shipment inspection (PSI). If there is an issue with SIC464ED-T1-GE3, 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 SIC464ED-T1-GE3 part is unused and in its original packaging.
Return procedure for SIC464ED-T1-GE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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