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Vishay Siliconix SIP12108DMP-T1GE4
- Part No.:
- SIP12108DMP-T1GE4
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
SIP12108DMP-T1GE4.pdf
- Description:
- IC REG BUCK ADJ 5A 16MLP
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
SiP12108DMP-T1GE4 from Vishay Siliconix is a monolithic synchronous buck regulator with integrated high-side and low-side MOSFETs, delivering 5 A continuous output current at up to 4 MHz switching frequency. It operates from a 2.8 V to 5.5 V input, regulates down to 0.6 V adjustable output, and features ±1 % VOUT accuracy-designed for point-of-load regulation in FPGAs, network processors, and industrial embedded systems.
For engineers reviewing the SiP12108DMP-T1GE4 datasheet, SiP12108DMP-T1GE4 pinout, SiP12108DMP-T1GE4 application, or SiP12108DMP-T1GE4 equivalent, key selection criteria include its CM-COT control architecture for ultrafast transient response, selectable PSM/forced-PWM mode via AUTO pin, integrated OVP/UVP/OTP protection, and QFN16 3 mm × 3 mm package with exposed thermal pad.
Technical Context
The SiP12108DMP-T1GE4 implements a current-mode constant-on-time (CM-COT) control scheme using internal valley-current sensing and a programmable RON-based on-time generator. Its error amplifier transconductance is 1 mS, and feedback reference is tightly regulated at 0.600 V (±0.009 V over –40 °C to +85 °C).
Protection logic includes pulse-by-pulse overcurrent limit (7.5 A typ.), output overvoltage detection (21 % above 0.6 V), output undervoltage latching (–25 % below 0.6 V), and thermal shutdown at 160 °C with 30 °C hysteresis-fully active after soft-start completion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 2.8 V to 5.5 V - supports standard 3.3 V and 5 V rails without external regulators |
| Output current | 5 A continuous - sufficient for mid-power FPGA cores and ASIC I/O banks |
| Switching frequency | 0.2 MHz to 4 MHz - programmable via RON resistor; enables compact magnetics at high fSW |
| Feedback reference | 0.600 V ±0.009 V - enables precise output setting down to 0.6 V with ±1 % total accuracy |
| Efficiency peak | 95 % - achieved at 2 MHz with 3.3 VIN/1.2 VOUT, reducing thermal load in dense PCB layouts |
| Thermal resistance θJA | 36.3 °C/W - measured with JEDEC-standard 2-layer board; requires thermal pad connection for full rating |
| Protection features | OVP, UVP (SiP12108 only), OTP, SCP, UVLO - eliminates need for external monitoring ICs |
Pinout & Package
The SiP12108DMP-T1GE4 is housed in a lead-free, power-enhanced QFN16-33G package (3 mm × 3 mm, 0.5 mm pitch) with an exposed thermal pad (EP) requiring solder connection to PCB ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 (VIN) | Power input for MOSFETs | Connects to main input rail (2.8–5.5 V); must be decoupled near package |
| 2 (AVIN) | Bias supply for control circuitry | Separate 2.8–5.5 V input; enables independent sequencing from power stage |
| 3 (EN) | Enable control | Logic-high threshold 1.5 V; allows precise power-up sequencing with external RC delay |
| 4 (RON) | On-time programming | Resistor-to-ground sets fixed on-time; directly determines switching frequency |
| 5 (AUTO) | Mode selection | Tied to AVIN for forced PWM; tied to GND for diode-emulation PSM mode |
| 6 (PGOOD) | Open-drain status indicator | Asserts high when VFB is within ±12.5 % / +21 % window of 0.6 V; requires external pull-up |
| 7 (GMO) | Compensation node | Connects external RC network for loop stability; replaces need for ESR-based bulk caps |
| 8 (AGND) | Analog ground reference | Must be star-connected to PGND at single point to minimize noise coupling |
| 9 (VFB) | Feedback input | 0.6 V reference input; senses output via resistor divider; enables UVP/OVP monitoring |
| 10 (VOUT) | Output voltage sense | Direct connection to output rail for remote sensing; improves regulation under trace IR drop |
| 11–13 (LX) | Switch node | High-current path to inductor; requires short, low-inductance layout to minimize ringing |
| 14–15 (PGND) | Power ground return | Low-impedance return for MOSFET currents; must be solid copper under exposed pad |
| EP (Exposed pad) | Thermal and electrical ground | Must be soldered to internal/external ground planes; critical for θJA and reliability |
Key Features
| Feature | Design Value |
|---|---|
| CM-COT control | Delivers <10 μs load-step response with no external compensation beyond GMO RC network |
| No ESR dependency | Stable with ceramic-only output capacitors; eliminates bulk electrolytic and ESR tuning networks |
| Selectable operating mode | PSM extends light-load efficiency to >85 % at 10 mA; forced PWM ensures fixed-frequency EMI profile |
| Integrated MOSFETs | RDS(on) = 35 mΩ (HS) / 23 mΩ (LS) at 5 VIN; enables 5 A operation in 9 mm² footprint |
| Full fault protection | OVP/UVP/OTP/SCP all active post-soft-start; UVP latches off until EN or AVIN recycle |
Applications
| Computing Point-of-Load | Industrial Embedded Power |
|---|---|
Use Scenario: Regulating core voltage for Xilinx Artix-7 FPGA with dynamic current demand up to 4.5 A. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing tightly regulated 1.0 V ±1 % at 5 A with <50 mV undershoot during 4 A/μs load transients. Use Value: Eliminates need for external current-sense resistors or discrete gate drivers; reduces BOM count by 7 components vs. controller+MOSFET solution. | Use Scenario: Powering ARM Cortex-M7 microcontroller and associated peripherals in factory automation PLC module. IC Role / Device Role / Timing Role: Single-chip 3.3 V to 1.2 V conversion with PSM mode enabling <25 μA quiescent current during sleep cycles. Use Value: Meets IEC 61000-4-2 Level 4 ESD immunity (4 kV HBM) without external TVS; thermal pad enables operation at 85 °C ambient without derating. |
| Telecom Line Card Supply | Test & Measurement Instrumentation |
Use Scenario: Generating 1.8 V for Ethernet PHY and SerDes interfaces on 10Gbps line card with strict ripple limits. IC Role / Device Role / Timing Role: High-frequency (2.5 MHz) buck converter minimizing inductor size while maintaining <10 mVpp output ripple at full load. Use Value: CM-COT architecture achieves <15 μs recovery from 0→5 A step without output overshoot; avoids need for post-regulator LDO. | Use Scenario: Providing clean, low-noise 2.5 V supply for 16-bit SAR ADC reference buffer in portable spectrum analyzer. IC Role / Device Role / Timing Role: Low-ripple, low-noise power stage with PGOOD monitoring for system-level health checks. Use Value: 95 % peak efficiency reduces self-heating, preserving ADC INL spec; PGOOD window (±12.5 % / +21 %) enables robust power-good assertion across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2315DJ-LF-Z | 4 A rated, 2.5 V–36 V input, fixed 500 kHz fSW, no UVP, lower integration (external bootstrap diode) | Lacks UVP and PGOOD; less suitable for safety-critical FPGA supplies | Prefer SiP12108DMP-T1GE4 where UVP latching and 5 A capability are required |
| TPS54560QDGQRQ1 | 5 A, 3.5 V–60 V input, current-mode PWM, external MOSFETs, automotive-grade (-40°C to +125°C) | Requires external high-side/low-side FETs and driver; larger solution size | Choose SiP12108DMP-T1GE4 for space-constrained industrial designs needing monolithic integration |
Compared with MP2315DJ-LF-Z and TPS54560QDGQRQ1, the SiP12108DMP-T1GE4 delivers higher integration (internal MOSFETs + UVP + PGOOD), tighter output accuracy (±1 % vs. ±2 %), and superior light-load efficiency via PSM-making it optimal for compact, high-reliability 3.3 V/5 V point-of-load systems.
Availability
SiP12108DMP-T1GE4 is available at Aetrix Electronics and suitable for computing, industrial embedded, and telecom applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for SiP12108DMP-T1GE4 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 ICs with emphasis on integration, thermal performance, and reliability.
The SiP12108 product line was designed for high-density point-of-load regulation in space-constrained systems-targeting FPGA, ASIC, and processor core supplies where monolithic integration, fast transient response, and comprehensive protection are mandatory.
FAQ
What is the minimum output voltage supported by the SiP12108DMP-T1GE4?
The SiP12108DMP-T1GE4 supports an adjustable output voltage down to 0.6 V, set by an external resistor divider on the VFB pin. Its internal 0.600 V reference (±0.009 V over temperature) enables precise regulation at low voltages required by modern FPGA and ASIC cores. The SiP12108DMP-T1GE4 maintains ±1 % total output accuracy across load, line, and temperature when properly compensated.
Does the SiP12108DMP-T1GE4 include output undervoltage protection (UVP)?
Yes, the SiP12108DMP-T1GE4 includes output undervoltage protection (UVP). When the VFB voltage falls below 0.45 V for more than 20 μs, the device latches off both high-side and low-side MOSFETs. UVP activates after soft-start completion and remains active until AVIN or EN is cycled. Note that the SiP12108A variant (e.g., SiP12108ADMP-T1GE4) omits this feature-UVP is exclusive to the base SiP12108DMP-T1GE4.
How is switching frequency programmed on the SiP12108DMP-T1GE4?
Switching frequency on the SiP12108DMP-T1GE4 is programmed via an external resistor (RON) connected between the RON pin and AGND. The on-time is fixed per cycle and determined by RON using the formula TON = RON × K (K = 10.45 × 10−12). Frequency ranges from 0.2 MHz to 4 MHz; for example, a 105 kΩ RON sets ~1 MHz. The SiP12108DMP-T1GE4 does not require clock synchronization or external frequency sources.
What thermal design considerations apply to the SiP12108DMP-T1GE4?
The SiP12108DMP-T1GE4 uses a QFN16 3 mm × 3 mm package with an exposed thermal pad (EP) that must be soldered to a PCB ground plane. Four thermal vias under the pad are recommended to transfer heat to inner layers. With proper layout, θJA is 36.3 °C/W (JEDEC 2-layer board); exceeding 1.3 W dissipation at 100 °C ambient requires enhanced copper area or airflow. The device includes OTP at 160 °C with 30 °C hysteresis.
Can the SiP12108DMP-T1GE4 operate with pre-biased outputs?
Yes, the SiP12108DMP-T1GE4 supports pre-bias startup. During startup, the control logic monitors VFB and prevents high-side/low-side MOSFET switching if the sensed voltage exceeds the internal reference ramp value-avoiding negative voltage spikes and excessive current sinking through the low-side FET. This ensures safe start-up into an already charged output capacitor, critical for hot-swap and redundant power systems.
SIP12108DMP-T1GE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- 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):
- 2.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 4.68V
- Current - Output:
- 5A
- Frequency - Switching:
- 200kHz ~ 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MLP (3x3)
SIP12108DMP-T1GE4 FAQ
1.How can I place an order for SIP12108DMP-T1GE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP12108DMP-T1GE4 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 SIP12108DMP-T1GE4 reliable?
The price and inventory of SIP12108DMP-T1GE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIP12108DMP-T1GE4 is usually 5 days.
3.What payment methods are accepted for SIP12108DMP-T1GE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP12108DMP-T1GE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP12108DMP-T1GE4?
SIP12108DMP-T1GE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP12108DMP-T1GE4 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 SIP12108DMP-T1GE4?
For technical support, including SIP12108DMP-T1GE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP12108DMP-T1GE4 requirements.
6.How does Aetrix verify that SIP12108DMP-T1GE4 is sourced from the original manufacturer or authorized distributors?
All SIP12108DMP-T1GE4 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 SIP12108DMP-T1GE4 meets industry standards.
7.What is the process for return or replacement of SIP12108DMP-T1GE4?
All SIP12108DMP-T1GE4 units undergo pre-shipment inspection (PSI). If there is an issue with SIP12108DMP-T1GE4, 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 SIP12108DMP-T1GE4 part is unused and in its original packaging.
Return procedure for SIP12108DMP-T1GE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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