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Vishay Siliconix SIC466ED-T1-GE3
- Part No.:
- SIC466ED-T1-GE3
- Manufacturer:
- Vishay Siliconix
- Package:
- PowerPAK® MLP55-27
- Datasheet:
-
SIC466ED-T1-GE3.pdf
- Description:
- IC REG BCK ADJ POWERPAK MLP55-27
- Quantity:
- Payment:
- Shipping:
Inventory:2,322
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Product details
Overview
SIC466ED-T1-GE3 from Vishay Siliconix is a 10 A, 4.5 V to 60 V input synchronous buck DC/DC converter with integrated high-side and low-side MOSFETs, adjustable 0.8 V output, 2 MHz max switching frequency, and internal compensation - designed for industrial computing, telecom power supplies, and robotics.
For engineers reviewing the SIC466ED-T1-GE3 datasheet, SIC466ED-T1-GE3 pinout, SIC466ED-T1-GE3 application, or SIC466ED-T1-GE3 equivalent, key selection criteria include valley current limit (6.5 A–13 A via ILIMIT pin), ±1 % output voltage accuracy over –40 °C to +125 °C, 98 % peak efficiency, programmable soft start, and full protection suite (OCP, OVP, UVP, OTP, PGOOD).
Technical Context
The SIC466ED-T1-GE3 implements voltage-mode constant-on-time (COT) control with adaptive zero-current detection, enabling ultrafast transient response and stable operation with all-ceramic output capacitors. Its internal ramp generator eliminates need for external ESR networks, and diode emulation mode reduces light-load losses.
It integrates a 10 A-rated power stage with optimized n-channel MOSFETs, supports pre-bias startup and output voltage tracking, and delivers tight ripple regulation at very light loads via programmable switching frequency (100 kHz–2 MHz) and selectable current limit (50 %/75 %/100 % of rated valley current).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - supports wide-range industrial and telecom rails without external pre-regulation |
| Output Current Rating | 10 A continuous - matches SiC466 variant within pin-compatible family (SiC466/SiC467/SiC468/SiC469) |
| Output Voltage Accuracy | ±1 % from –40 °C to +125 °C - ensures stable regulation across extended temperature environments |
| Switching Frequency | 100 kHz to 2 MHz - adjustable via resistor on fSW pin; enables optimization of size vs. efficiency trade-offs |
| Valley Current Limit | 6.5 A (ILIMIT = AGND), 9.75 A (ILIMIT = float), 13 A (ILIMIT = VDD) - configurable cycle-by-cycle OCP for system-level fault tolerance |
| Feedback Reference Voltage | 800 mV ±4 mV (TJ = 25 °C); ±8 mV (–40 °C to +125 °C) - sets precise output voltage via external resistor divider |
| Peak Efficiency | 98 % - achieved at mid-load with optimized MOSFET RDS(on) and gate drive architecture |
| Shutdown Current | 4 μA typical - enables ultra-low-power standby in battery-backed or energy-sensitive systems |
Pinout & Package
Package: PowerPAK® MLP55-27L (5 mm × 5 mm, 27-pin lead-free QFN with exposed thermal pad). Pinout validated per Vishay S25-1437-Rev. J (Fig. 3 and PIN DESCRIPTION table).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCIN | Internal regulator supply input | Bias source for VDD/VDRV; accepts 4.5–60 V; RC-filtered from VIN to reduce LDO losses |
| 2 PGOOD | Open-drain power-good flag | Asserts high-impedance when VFB is within ±10 % of setpoint; requires external pull-up |
| 3 EN | Enable control | High-voltage compatible (0–60 V); internal weak pull-down prevents floating startup |
| 4 BOOT | High-side gate driver bootstrap | Connects via series R/C to PHASE; ≥4.7 Ω recommended for robust gate charging |
| 5,6 PHASE | High-side MOSFET source / low-side drain node | Power switch node return path; must be routed with low-inductance layout |
| 7,8,29 VIN | Main power input | Drain of high-side MOSFET; decouple directly to PGND with low-ESR capacitors |
| 9,10,11,17,30 PGND | Power ground | High-current return for MOSFETs and input/output caps; separate from AGND |
| 12,13,14 SW | Switch node | Connection point between high-side drain and low-side source; critical for EMI control |
| 15 GL | Low-side gate driver output | Direct drive signal to low-side MOSFET gate; not user-accessible in normal operation |
| 16 VDRV | Gate driver supply | Internal LDO output (5.3 V typ.); 4.7 μF decoupling required; can be bypassed externally |
| 19 SS | Soft-start timing | Charged by internal 5 μA current source; capacitor value sets ramp time (tSS = 0.8 V × CEXT / 5 μA) |
| 20 VOUT | Output voltage sense point | Internal connection for ripple injection network; improves light-load stability |
| 22 VFB | Feedback input | Compares against 0.8 V reference; connects to resistor divider from VOUT to AGND |
| 23,28 AGND | Analog ground | Reference for feedback, timing, and protection circuits; shorted together and tied to PGND under IC |
| 24 fSW | Frequency setting | Resistor-to-AGND sets switching frequency: fSW ≈ 1.9×10⁻¹⁰ × VOUT / RfSW (Hz) |
| 25 ILIMIT | Current limit selection | AGND = 50 %, float = 75 %, VDD = 100 % of rated valley current limit (6.5 A / 9.75 A / 13 A) |
| 26 VDD | Bias supply output | Internal LDO output (5 V typ.); powers control logic; 1 μF decoupling to AGND required |
| 27 MODE | Operating mode select | Resistor-to-AGND selects power-save mode and VDRV regulator state (4 modes defined in Table 1) |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated loop | Stable with any output capacitor type (including all-ceramic), eliminating need for ESR tuning networks |
| Ultrafast transient response | Minimizes output capacitance requirement while maintaining < ±1 % regulation during load steps |
| Programmable valley current limit | Three discrete OCP thresholds (6.5 A / 9.75 A / 13 A) selected without external components |
| Pre-bias startup support | Prevents negative voltage spikes and excessive current sink when VOUT is pre-charged before enable |
| Output voltage tracking & sequencing | Enables coordinated power-up/down with other rails using external resistive or active tracking circuits |
| Comprehensive fault protection | OCP (cycle-by-cycle), OVP (120 % VOUT), UVP (20 % VOUT), OTP (150 °C trip, 35 °C hysteresis), PGOOD |
Applications
| Industrial Computing Power | Telecom Base Station PSU |
|---|---|
Use Scenario: Point-of-load conversion for FPGA, ASIC, or CPU core rails in ruggedized edge servers and programmable logic controllers. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 0.8–5 V at up to 10 A with fast transient response to handle dynamic core loading. Use Value: Internal compensation and all-ceramic stability reduce BOM count and PCB area; 98 % peak efficiency lowers thermal design burden in sealed enclosures. |
Use Scenario: Intermediate bus conversion in 48 V telecom power distribution, feeding downstream POL modules in macro/micro base stations. IC Role / Device Role / Timing Role: High-input-voltage buck stage stepping 48 V down to 12 V or 5 V with programmable soft start for hot-swap compliance. Use Value: 60 V absolute max input rating accommodates 48 V transients; PGOOD and sequencing support meet GR-1089 Class A requirements. |
| Robotics Motor Drive Supply | Industrial Automation I/O Module |
Use Scenario: Powering microcontroller, sensor interface, and communication ICs in collaborative robot joint controllers and motor drivers. IC Role / Device Role / Timing Role: Compact, thermally efficient 10 A buck converter supplying isolated logic rails from 24 V or 48 V main bus. Use Value: 5 mm × 5 mm MLP55-27L package enables dense board layouts; OTP with 35 °C hysteresis ensures reliable restart after thermal overload events. |
Use Scenario: Distributed power for analog input/output modules, PLC backplanes, and fieldbus gateways operating in harsh factory environments. IC Role / Device Role / Timing Role: Robust primary regulator handling wide input variation (e.g., 12–36 V DC) while maintaining ±1 % output accuracy over –40 °C to +105 °C ambient. Use Value: UVLO on EN and VCIN prevents erratic behavior during brownouts; output undervoltage protection triggers hiccup mode to avoid latch-up during wiring faults. |
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) | 4.5–36 V input, 0.8–28 V output, 0.6 A; smaller current rating, no integrated 10 A power stage | Targeted at sub-1 A auxiliary rails, not direct replacement for 10 A main POL | Select only for lower-current, cost-sensitive designs where footprint and thermal performance are less critical |
| TPS546D24RQFR (Texas Instruments) | 4–18 V input, 0.5–5.5 V output, 10 A; requires external MOSFETs, higher BOM count, different pinout | Used in high-density server VRMs where PMBus telemetry and multi-phase sync are required | Choose when digital control, telemetry, or multi-phase scalability outweighs integration benefits of SIC466ED-T1-GE3 |
Compared with MP2451DT-LF-Z and TPS546D24RQFR, the SIC466ED-T1-GE3 delivers higher integration (fully integrated 10 A power stage), wider input range (4.5–60 V), and simpler layout (no external MOSFETs or gate drivers), making it optimal for space-constrained industrial and telecom applications requiring minimal external components.
Availability
SIC466ED-T1-GE3 is available at Aetrix Electronics and suitable for industrial computing, telecom base station power supplies, and robotics requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SIC466ED-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-efficiency power management solutions with emphasis on ruggedness, reliability, and thermal performance.
The SiC46x family - including SIC466ED-T1-GE3 - was engineered for wide-input-voltage, high-current POL applications in industrial, telecom, and automation systems where compact size, fast transient response, and comprehensive protection are mandatory.
FAQ
What is the maximum input voltage rating for the SIC466ED-T1-GE3?
The SIC466ED-T1-GE3 has an absolute maximum input voltage (VIN) rating of 66 V, with recommended operating range from 4.5 V to 60 V. Operation above 60 V is not advised for sustained use, as electrical specifications are guaranteed only within the 4.5–60 V range per Vishay S25-1437-Rev. J. Exceeding 66 V risks permanent damage.
How does the ILIMIT pin configure the current limit on the SIC466ED-T1-GE3?
The ILIMIT pin on the SIC466ED-T1-GE3 selects valley current limit thresholds: tying to AGND sets 50 % (6.5 A), leaving floating sets 75 % (9.75 A), and tying to VDD sets 100 % (13 A) of the device's rated current capability. This configuration is active immediately after VDD exits UVLO and enables scalable fault protection without external components.
Does the SIC466ED-T1-GE3 require external compensation components?
No, the SIC466ED-T1-GE3 is internally compensated and stable with any output capacitor type - including all-ceramic configurations - eliminating the need for external ESR networks or compensation capacitors. This simplifies design, reduces BOM count, and improves reliability across temperature and aging conditions.
What thermal protection features does the SIC466ED-T1-GE3 include?
The SIC466ED-T1-GE3 incorporates overtemperature protection (OTP) that disables both MOSFETs when junction temperature exceeds 150 °C (typ.), with 35 °C hysteresis for automatic recovery at ~115 °C. OTP is disabled during discontinuous conduction mode to prevent false trips at light loads, ensuring robust operation across full load range.
Can the SIC466ED-T1-GE3 operate with a pre-biased output voltage?
Yes, the SIC466ED-T1-GE3 supports pre-bias startup: if the FB voltage exceeds the internal soft-start ramp at enable, the control logic inhibits switching to prevent reverse current flow through the low-side MOSFET and avoid output voltage collapse or negative spikes - critical for hot-swap and redundant power systems.
SIC466ED-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):
- 15V
- Current - Output:
- 10A
- Frequency - Switching:
- 100kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerPAK® MLP55-27
SIC466ED-T1-GE3 FAQ
1.How can I place an order for SIC466ED-T1-GE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIC466ED-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 SIC466ED-T1-GE3 reliable?
The price and inventory of SIC466ED-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 SIC466ED-T1-GE3 is usually 5 days.
3.What payment methods are accepted for SIC466ED-T1-GE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIC466ED-T1-GE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIC466ED-T1-GE3?
SIC466ED-T1-GE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIC466ED-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 SIC466ED-T1-GE3?
For technical support, including SIC466ED-T1-GE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIC466ED-T1-GE3 requirements.
6.How does Aetrix verify that SIC466ED-T1-GE3 is sourced from the original manufacturer or authorized distributors?
All SIC466ED-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 SIC466ED-T1-GE3 meets industry standards.
7.What is the process for return or replacement of SIC466ED-T1-GE3?
All SIC466ED-T1-GE3 units undergo pre-shipment inspection (PSI). If there is an issue with SIC466ED-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 SIC466ED-T1-GE3 part is unused and in its original packaging.
Return procedure for SIC466ED-T1-GE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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