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Vishay Siliconix SIP12117DMP-T1-GE4
- Part No.:
- SIP12117DMP-T1-GE4
- Manufacturer:
- Vishay Siliconix
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
SIP12117DMP-T1-GE4.pdf
- Description:
- IC REG BUCK ADJ 3A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,558
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Product details
Overview
SiP12117DMP-T1-GE4 from Vishay Siliconix is a monolithic current-mode constant-on-time (CM-COT) synchronous buck regulator with integrated 85 mΩ high-side and 55 mΩ low-side MOSFETs, delivering up to 3 A continuous output current at 600 kHz switching frequency from a 4.5 V–15 V input, generating adjustable output down to 0.6 V for graphics card and notebook power rails.
For engineers reviewing the SiP12117DMP-T1-GE4 datasheet, SiP12117DMP-T1-GE4 pinout, SiP12117DMP-T1-GE4 application, or SiP12117DMP-T1-GE4 equivalent, key selection criteria include its ultrafast transient response enabled by CM-COT architecture, integrated compensation eliminating external loop components, 2.9 ms soft-start timing, cycle-by-cycle overcurrent protection, and thermal pad-equipped DFN10-33C package for high-power-density PCB layouts.
Technical Context
The SiP12117DMP-T1-GE4 implements a current-mode COT control scheme using valley-current sensing via RDS(on) of the low-side FET, with fixed on-time generation (138 ns typ. at VIN = 12 V, VOUT = 1 V) and internal 0.6 V reference (±15 mV over temperature). Its PWM logic includes zero-crossing detection for diode emulation in light-load conditions and automatic frequency scaling down to hundreds of Hz at no load.
Protection functions are tightly coupled to real-time operation: overtemperature shutdown triggers at 145 °C (typ.) with 35 °C hysteresis; input UVLO activates at 2.8 V rising edge with 550 mV hysteresis; and cycle-by-cycle OCP compares sensed valley current against 4.25 A (typ.) threshold after blanking time-enabling immediate pulse skipping without delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 4.5 V to 15 V - supports wide-input industrial and computing rails without pre-regulation |
| Output voltage range | 0.6 V to 5.5 V - set via external resistor divider; 0.6 V reference enables core voltage regulation for modern SoCs |
| Continuous output current | 3 A - sustained delivery with integrated MOSFETs eliminates need for external power stage |
| Switching frequency | 600 kHz (fixed) - balances efficiency, size, and EMI; minimal variation across load due to COT architecture |
| Feedback reference voltage | 600 mV (±15 mV, -40 °C to +85 °C) - precise setting point for output accuracy and load regulation |
| Shutdown current | < 5 μA typ. - enables ultra-low quiescent power in system standby modes |
| Thermal resistance θJA | 36.3 °C/W - verified with exposed thermal pad; supports 3 A operation in compact 3 mm × 3 mm footprint |
Pinout & Package
The SiP12117DMP-T1-GE4 is housed in a lead-free 3 mm × 3 mm DFN10-33C package with an exposed thermal pad (AGND) on the bottom for enhanced heat dissipation and low-inductance grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback input | Connects to resistor divider midpoint; senses 0.6 V reference to regulate VOUT; bias current < 100 nA minimizes divider error |
| 2 VCC | Internal LDO output | Supplies gate driver and control logic; not externally powered; requires local 1 μF decoupling |
| 3 VIN | Main power input | Accepts 4.5–15 V; feeds both power stage and internal regulator; UVLO threshold 2.8 V |
| 4,5 PGND | Power ground return | Low-impedance path for high di/dt switching currents; must be connected directly to thermal pad |
| 6,7 LX | Switch node | Connects to inductor; carries full switching waveform; requires tight layout to minimize ringing |
| 8 BOOT | Bootstrap supply | Drives high-side gate; requires ≥100 nF ceramic capacitor between BOOT and LX |
| 9 PGOOD | Open-drain status output | Asserts when VOUT is within ±10% of target; pull-up required; 28 Ω typical pull-down resistance |
| 10 EN | Enable control | Active-high logic input; enable above 1.5 V, disable below 0.4 V; must not float |
| Pad AGND | Analog ground / thermal slug | Primary thermal path and quiet reference for feedback circuitry; soldered to PCB copper pour |
Key Features
| Feature | Design Value |
|---|---|
| Integrated power stage | 85 mΩ HS + 55 mΩ LS MOSFETs enable 95% peak efficiency at 600 kHz without external switches |
| CM-COT control architecture | Delivers <10 μs load-step undershoot response and stable regulation with minimal output capacitance (no ESR requirement) |
| Integrated compensation | Eliminates external Type-II/III compensation network; reduces BOM count and layout sensitivity |
| Pre-bias startup support | Monitors FB voltage during startup; prevents negative VOUT spikes when output is pre-charged |
| Diode emulation mode | Disables low-side FET at zero-crossing to eliminate reverse conduction losses and improve light-load efficiency |
Applications
| Graphics cards | Set-top-box |
|---|---|
Use Scenario: Powering GPU memory and I/O rails requiring fast dynamic load response during video encoding bursts. IC Role / Device Role / Timing Role: Primary 3 A synchronous buck converter regulating 1.2 V or 1.8 V memory supply with CM-COT enabling sub-10 μs transient recovery. Use Value: Eliminates need for large bulk capacitors and external compensation, reducing board area by >30% versus traditional voltage-mode controllers. | Use Scenario: Generating stable 3.3 V or 5 V system rails in space-constrained STB mainboards with variable processor load. IC Role / Device Role / Timing Role: Standalone step-down regulator supplying SoC core and peripheral domains; EN pin enables clean power sequencing with host MCU. Use Value: Integrated OTP and OCP ensure robust operation under thermal stress or short-circuit events without external fault management circuitry. |
| LCD TV | Notebook computers |
Use Scenario: Providing adjustable backlight LED driver bias or TCON (timing controller) supply with low-noise performance. IC Role / Device Role / Timing Role: Secondary buck regulator delivering 0.6–5.5 V outputs; PGOOD signal synchronizes display initialization sequence. Use Value: Soft-start timing (2.9 ms typ.) prevents inrush current into downstream capacitive loads, avoiding brown-out on shared input rails. | Use Scenario: Regulating DDR memory VDDQ or chipset I/O voltage where efficiency and thermal density are critical. IC Role / Device Role / Timing Role: High-efficiency 3 A buck converter operating from 12 V adapter input; DFN10 package enables placement near memory modules. Use Value: Thermal pad and low θJA (36.3 °C/W) sustain full 3 A load in thin-profile notebooks without forced airflow. |
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 | Fixed 500 kHz frequency; 3.5 A rating; no integrated soft-start; requires external compensation | Lacks PGOOD and pre-bias startup; less suitable for systems requiring strict power sequencing | Choose MP2315DJ-LF-Z only if lower cost outweighs loss of integrated features and reduced design margin |
| TPS54332DR | Voltage-mode control; 3.5 A rating; external MOSFETs; 500 kHz–2.5 MHz programmable frequency | Higher component count and layout complexity; better for designs needing frequency synchronization or higher current scalability | Select TPS54332DR when flexibility in MOSFET selection or frequency tuning is required over integration and ease-of-use |
Compared with MP2315DJ-LF-Z and TPS54332DR, the SiP12117DMP-T1-GE4 delivers superior transient response and smaller solution size due to its CM-COT architecture and fully integrated power stage, while offering built-in protections and sequencing features that reduce validation effort in consumer electronics designs.
Availability
SiP12117DMP-T1-GE4 is available at Aetrix Electronics and suitable for graphics card power delivery, notebook DC-DC conversion, and LCD TV TCON supply requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for SiP12117DMP-T1-GE4 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 ICs and MOSFETs for demanding industrial and computing environments.
The SiP12117DMP-T1-GE4 belongs to Vishay's microBUCK product line, designed specifically for compact, high-efficiency step-down regulation in space-constrained consumer and computing applications where integration, thermal performance, and fast transient response are critical.
FAQ
What is the recommended input capacitor configuration for SiP12117DMP-T1-GE4?
For optimal high-frequency noise suppression and input loop stability, use two ceramic capacitors placed close to VIN and PGND pins: one 100 nF (0402) and one 10 μF (1210), both rated ≥35 V. The 100 nF capacitor handles switching ripple, while the 10 μF provides bulk energy storage. Layout must minimize loop area between VIN, PGND, and the capacitors to reduce EMI and voltage spikes on the LX node.
Does SiP12117DMP-T1-GE4 support pre-bias startup, and how does it behave?
Yes, SiP12117DMP-T1-GE4 supports pre-bias startup. During enable, the device monitors the FB pin voltage; if it exceeds the internal reference ramp value, the control logic inhibits switching of both high-side and low-side FETs to prevent reverse current flow and negative VOUT spikes. This ensures safe startup into an already charged output rail, critical for hot-swap and multi-rail sequencing applications.
What is the function of the AGND thermal pad on SiP12117DMP-T1-GE4, and how should it be connected?
The AGND thermal pad on SiP12117DMP-T1-GE4 serves dual roles: it provides the primary thermal path to the PCB and acts as the analog ground reference for the feedback and control circuitry. It must be soldered to a dedicated, low-impedance copper pour connected to the system AGND plane via ≥4 thermal vias (0.3 mm diameter), and electrically isolated from PGND except at a single-point connection near the input capacitors to avoid noise coupling.
How does the SiP12117DMP-T1-GE4 achieve ultrafast transient response?
The SiP12117DMP-T1-GE4 achieves ultrafast transient response through its current-mode constant-on-time (CM-COT) architecture, which senses inductor valley current in real time and adjusts off-time dynamically-eliminating loop compensation delays. Combined with integrated MOSFETs and low-output-impedance design, this enables <10 μs undershoot recovery (e.g., 0 A → 3 A step) and stable regulation with only 66 μF total ceramic output capacitance, reducing reliance on high-ESR bulk capacitors.
What protection features are implemented in SiP12117DMP-T1-GE4, and how do they activate?
SiP12117DMP-T1-GE4 implements cycle-by-cycle overcurrent protection (OCP), overtemperature protection (OTP), and input under-voltage lockout (UVLO). OCP triggers when valley current exceeds 4.25 A (typ.), skipping high-side pulses until current falls below threshold. OTP shuts down both FETs at 145 °C (typ.) with 35 °C hysteresis. UVLO disables operation below 2.8 V (rising edge) with 550 mV hysteresis-ensuring reliable start-up and fault containment without external supervision.
SIP12117DMP-T1-GE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Package/Case:
- 10-VFDFN 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):
- 4.5V
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3A
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
SIP12117DMP-T1-GE4 FAQ
1.How can I place an order for SIP12117DMP-T1-GE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP12117DMP-T1-GE4 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 SIP12117DMP-T1-GE4 reliable?
The price and inventory of SIP12117DMP-T1-GE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIP12117DMP-T1-GE4 is usually 5 days.
3.What payment methods are accepted for SIP12117DMP-T1-GE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP12117DMP-T1-GE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP12117DMP-T1-GE4?
SIP12117DMP-T1-GE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP12117DMP-T1-GE4 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 SIP12117DMP-T1-GE4?
For technical support, including SIP12117DMP-T1-GE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP12117DMP-T1-GE4 requirements.
6.How does Aetrix verify that SIP12117DMP-T1-GE4 is sourced from the original manufacturer or authorized distributors?
All SIP12117DMP-T1-GE4 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 SIP12117DMP-T1-GE4 meets industry standards.
7.What is the process for return or replacement of SIP12117DMP-T1-GE4?
All SIP12117DMP-T1-GE4 units undergo pre-shipment inspection (PSI). If there is an issue with SIP12117DMP-T1-GE4, 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 SIP12117DMP-T1-GE4 part is unused and in its original packaging.
Return procedure for SIP12117DMP-T1-GE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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