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Microchip Technology MIC4720YMME-TR
- Part No.:
- MIC4720YMME-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MIC4720YMME-TR.pdf
- Description:
- IC REG BUCK ADJ 2A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,170
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Product details
Overview
MIC4720YMME-TR from Micrel is a 2A, 2.0MHz adjustable-output synchronous buck regulator in a 10-pin ePad MSOP package, operating from 2.7V to 5.5V input and delivering down to 1V output with up to 94% efficiency. It integrates a low-RDS(ON) P-channel MOSFET switch, supports 100% duty cycle for low-dropout operation, and targets FPGA/DSP point-of-load applications requiring fast transient response and minimal external components.
For engineers reviewing the MIC4720YMME-TR datasheet, MIC4720YMME-TR pinout, MIC4720YMME-TR application, or MIC4720YMME-TR equivalent, key selection considerations include its 2.0MHz fixed-frequency PWM mode, internal compensation enabling >200kHz closed-loop bandwidth, thermal shutdown and current limit protection, and compatibility with 1µH inductors and 4.7µF output capacitors.
Technical Context
The MIC4720YMME-TR implements voltage-mode PWM control with proprietary type III internal compensation, enabling stable regulation without external compensation components when used with its recommended 1µH inductor and 4.7µF output capacitor. Its integrated high-side P-channel MOSFET features typical RDS(ON) of 200mΩ at VIN = 3.3V, supporting continuous 2A output current.
Operation spans –40°C to +125°C junction temperature, with micropower shutdown (<10µA), open-drain PGOOD monitoring (±7.5% regulation window), and BIAS pin requiring 0.1µF bypass to SGND. The device uses non-synchronous topology, necessitating an external Schottky freewheeling diode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, 3.3V, and 5V rail inputs without external regulators |
| Output Current | 2A continuous - sufficient for core power of mid-tier FPGAs and DSPs |
| Switching Frequency | 2.0MHz (±10%) - enables compact filter design with 1µH inductors and reduces audible noise |
| Feedback Reference | 1.0V ±2% - sets output via resistor divider; allows precise 1V–5.5V adjustment |
| Efficiency | Up to 94% at 2A - achieved via low RDS(ON) P-MOSFET and optimized gate drive |
| Duty Cycle Max | 100% - supports ultra-low dropout operation (e.g., 3.3VIN → 3.3VOUT) |
| Junction Temp Range | –40°C to +125°C - qualified for industrial and embedded computing environments |
Pinout & Package
Package: 10-pin ePad MSOP (exposed thermal pad), 3mm × 3mm footprint, Pb-free, θJA = 76°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,10 | SW | Switch node - connects directly to inductor; carries high di/dt switching current |
| 2,9 | VIN | Power input - supplies P-MOSFET source; requires local 10µF + 0.1µF bypass to PGND |
| 3 | PGND | Power ground - return path for MOSFET drive current; must be low-inductance, separate from SGND |
| 4 | SGND | Signal ground - reference for FB, EN, PGOOD; isolated from PGND to minimize noise coupling |
| 5 | BIAS | Bias supply - powers internal reference; requires 10Ω series resistor + 0.1µF to SGND |
| 6 | FB | Feedback input - senses output via resistor divider; 1nA input bias enables high-value resistors |
| 7 | PGOOD | Open-drain status - pulled low when VOUT is within ±7.5%; needs external pull-up |
| 8 | EN | Enable input - active-high logic; threshold 0.85V typical; draws <2.3µA when asserted |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2A P-MOSFET | Eliminates external high-side switch and current-sense resistor, reducing BOM count and layout area |
| 2.0MHz fixed-frequency PWM | Enables use of small 1µH shielded inductors and avoids AM radio band interference |
| Ultra-fast transient response | 200kHz closed-loop bandwidth minimizes output voltage deviation during load steps (e.g., FPGA core switching) |
| 100% duty cycle capability | Permits dropout operation down to VOUT − VIN ≈ 0 mV, critical for battery-backed or low-VIN systems |
| Thermal & current protection | Auto-recovery thermal shutdown at 160°C and cycle-by-cycle current limit prevent damage under overload/fault |
Applications
| FPGA Core Power | DSP I/O Supply |
|---|---|
Use Scenario: Powers 1.2V/1.8V core rails of Xilinx Spartan or Intel Cyclone FPGAs during dynamic reconfiguration. IC Role / Device Role / Timing Role: Primary DC-DC step-down regulator providing regulated core voltage with tight load-transient response. Use Value: Delivers 2A peak current with <20mV undershoot during 1A/µs load steps, enabled by 200kHz bandwidth and internal compensation. | Use Scenario: Supplies 3.3V I/O banks for TI C6000 or Analog Devices SHARC DSPs in broadband base stations. IC Role / Device Role / Timing Role: Point-of-load converter with PGOOD signaling to enable downstream logic sequencing. Use Value: PGOOD output asserts within 1ms of regulation, ensuring deterministic power-up timing for multi-rail DSP subsystems. |
| Set-Top Box SoC | Industrial Peripheral Controller |
Use Scenario: Generates 1.1V CPU core voltage for Broadcom BCM7xxx or MediaTek MT7621 SoCs in IPTV devices. IC Role / Device Role / Timing Role: High-efficiency buck regulator operating from 3.3V or 5V main rail with micropower shutdown. Use Value: Achieves >90% efficiency at 1.5A load and <10µA quiescent current in standby, extending system sleep time. | Use Scenario: Powers ARM Cortex-M7 microcontroller and CAN transceiver in factory automation PLC modules. IC Role / Device Role / Timing Role: Industrial-grade DC-DC converter with –40°C to +125°C operation and thermal fault reporting. Use Value: Maintains regulation across full temperature range with <0.2% load regulation, ensuring reliable MCU clock stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54202DDCR | 2A, 2.0MHz, integrated N-MOSFET; requires external bootstrap capacitor; 0.8V reference | Synchronous rectification improves light-load efficiency; lacks 100% duty cycle | Preferred where higher light-load efficiency is critical and 100% duty cycle not required |
| MP2307DN-LF-Z | 2A, 340kHz, integrated N-MOSFET; 0.925V reference; no PGOOD or BIAS pin | Lower frequency increases inductor size; simpler biasing but no dedicated analog ground | Selected for cost-sensitive designs where 2MHz switching and precision PGOOD are unnecessary |
Compared with TPS54202DDCR and MP2307DN-LF-Z, the MIC4720YMME-TR uniquely combines 2MHz operation, 100% duty cycle, and PGOOD in a thermally enhanced MSOP package-making it optimal for space-constrained, high-transient FPGA/DSP loads where dropout headroom and sequencing reliability are essential.
Availability
MIC4720YMME-TR is available at Aetrix Electronics and suitable for FPGA/DSP point-of-load, broadband communications infrastructure, and industrial peripheral controller applications requiring stable component supply and long-term lifecycle support.
Supply support for MIC4720YMME-TR 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
Micrel Inc. was a U.S.-based semiconductor company specializing in power management, analog, and RF solutions before its acquisition by Microchip Technology in 2015.
The MIC4720YMME-TR belongs to Micrel's high-frequency integrated buck regulator product line, designed specifically for compact, high-efficiency point-of-load conversion in FPGA, DSP, and SoC applications demanding fast transient response and minimal external components.
FAQ
What is the maximum output current capability of the MIC4720YMME-TR?
The MIC4720YMME-TR delivers up to 2A of continuous output current under specified thermal conditions (TJ ≤ +125°C). This rating assumes proper PCB layout with the exposed pad soldered to a thermal plane, ambient temperature ≤ +85°C, and use of recommended 1µH inductor and 4.7µF output capacitor. Peak current limit is 3.5A minimum, protecting against short-circuit events.
Does the MIC4720YMME-TR require an external freewheeling diode?
Yes, the MIC4720YMME-TR is a non-synchronous buck regulator and requires an external Schottky diode connected between SW and PGND. A diode with ≤0.5V forward voltage and ≥2A average current rating (e.g., MBRS340) is recommended to maintain high efficiency and ensure reliable operation across temperature.
What is the function of the BIAS pin on the MIC4720YMME-TR?
The BIAS pin on the MIC4720YMME-TR supplies clean power to the internal reference and control circuitry. It must be decoupled with a 0.1µF ceramic capacitor to SGND and driven through a 10Ω resistor from VIN. This filtering prevents high-frequency switching noise from degrading feedback accuracy and loop stability.
Can the MIC4720YMME-TR operate with a 100% duty cycle, and what does that enable?
Yes, the MIC4720YMME-TR supports 100% duty cycle operation when the FB pin voltage drops to ≤0.4V. This allows the output voltage to track the input voltage closely-enabling ultra-low dropout applications such as powering a 3.3V rail from a 3.3V source with minimal headroom, or maintaining regulation during brown-out conditions where input voltage sags near the output level.
What are the thermal resistance values for the MIC4720YMME-TR's 10-pin ePad MSOP package?
The MIC4720YMME-TR in its 10-pin ePad MSOP package has a junction-to-ambient thermal resistance (θJA) of 76°C/W and a junction-to-case (θJC) of 28°C/W when mounted on a standard 2-layer PCB with 1in² copper pour under the exposed pad. These values assume proper soldering of the EPAD to maximize heat transfer to the PCB ground plane.
MIC4720YMME-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 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):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
MIC4720YMME-TR FAQ
1.How can I place an order for MIC4720YMME-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC4720YMME-TR 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 MIC4720YMME-TR reliable?
The price and inventory of MIC4720YMME-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC4720YMME-TR is usually 5 days.
3.What payment methods are accepted for MIC4720YMME-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC4720YMME-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC4720YMME-TR?
MIC4720YMME-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC4720YMME-TR 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 MIC4720YMME-TR?
For technical support, including MIC4720YMME-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC4720YMME-TR requirements.
6.How does Aetrix verify that MIC4720YMME-TR is sourced from the original manufacturer or authorized distributors?
All MIC4720YMME-TR 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 MIC4720YMME-TR meets industry standards.
7.What is the process for return or replacement of MIC4720YMME-TR?
All MIC4720YMME-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC4720YMME-TR, 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 MIC4720YMME-TR part is unused and in its original packaging.
Return procedure for MIC4720YMME-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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