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Microchip Technology MIC4720YML-TR
- Part No.:
- MIC4720YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 12-VFDFN Exposed Pad, 12-MLF®
- Datasheet:
-
MIC4720YML-TR.pdf
- Description:
- IC REG BUCK ADJ 2A 12MLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,558
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Product details
Overview
MIC4720YML-TR from Micrel is a 2A, 2.0MHz synchronous-capable PWM buck regulator in a 12-pin 3mm × 3mm MLF® package, featuring an integrated p-channel MOSFET, 1.0V feedback reference, and operation from 2.7V to 5.5V input. It delivers up to 94% efficiency at 2A load with ultra-fast transient response and supports adjustable output down to 1V - used in FPGA core power, point-of-load DC/DC conversion, and compact computing peripherals.
For engineers reviewing the MIC4720YML-TR datasheet, MIC4720YML-TR pinout, MIC4720YML-TR application, or MIC4720YML-TR equivalent, key selection considerations include its 2.0MHz switching frequency enabling small 1µH inductors, 100% duty cycle capability for low-dropout operation, thermal shutdown and current limit protection, and Pb-free MLF® packaging rated for –40°C to +125°C junction temperature.
Technical Context
The MIC4720YML-TR implements voltage-mode PWM control with proprietary internal Type III compensation, achieving >200kHz closed-loop bandwidth without external compensation components. Its architecture integrates a high-side p-channel MOSFET switch (typ. 200mΩ RDS(on)) and supports non-synchronous operation with an external Schottky diode.
It features micropower shutdown (<10µA), logic-level enable with hysteresis, open-drain PGOOD monitoring (±7.5% regulation window), and separate PGND/SGND pins for optimized noise isolation. The BIAS pin requires external RC filtering (10Ω + 0.1µF) to supply clean bias for internal reference and control circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, USB 5V, and 3.3V system rails without pre-regulation. |
| Switching Frequency | 2.0MHz (±10%) - enables use of 1µH inductors and reduces EMI fundamental frequency above AM band. |
| Max Output Current | 2A continuous - sufficient for FPGA I/O banks, DSP cores, and ASIC auxiliary rails. |
| Feedback Reference | 1.0V ±2% over temperature - sets output via resistor divider; enables 1V–5.5V adjustable range with standard 1% resistors. |
| Efficiency | Up to 94% at 2A - achieved via low RDS(on) p-MOSFET and minimized gate drive losses at high VIN. |
| Duty Cycle Limit | 100% maximum - allows operation with VOUT close to VIN, e.g., 3.3V out from 3.6V input in low-dropout scenarios. |
| Junction Temp Range | –40°C to +125°C - qualified for industrial and embedded computing environments with no derating up to 125°C. |
Pinout & Package
The MIC4720YML-TR is housed in a thermally enhanced, exposed-pad 12-pin 3mm × 3mm MLF® (Micro Lead Frame) package, with θJA = 60°C/W and θJC = 10°C/W - requiring soldered EP connection to PCB ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 12 | SW | Switch node - connects directly to inductor; carries full 2A peak-switching current and high dv/dt transients. |
| 2, 11 | VIN | Power input - dual pins reduce IR drop and inductance; each requires local 10µF ceramic bypass to PGND. |
| 3, 10 | PGND | Power ground - dedicated return path for MOSFET source current; must be low-inductance, separate from SGND. |
| 4 | SGND | Signal ground - return for FB, EN, PGOOD, and internal reference; isolated from PGND to prevent noise coupling. |
| 5 | BIAS | Bias supply - powers internal analog circuitry; requires 10Ω series resistor + 0.1µF ceramic to SGND for noise rejection. |
| 6 | FB | Feedback input - senses divided output voltage; 1nA input bias enables high-impedance dividers (e.g., 10k/12.4k for 1.8V). |
| 7 | NC | No connect - unconnected die pad; may be left floating or tied to SGND/PGND per layout needs. |
| 8 | EN | Enable input - active-high logic control; <0.85V disables device, drawing <10µA; hysteresis prevents chatter near threshold. |
| 9 | PGOOD | Power-good flag - open-drain output pulled low when VOUT is within ±7.5% of target; requires external pull-up. |
| EP | GND | Exposed thermal pad - must be soldered to large PCB copper area for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated p-channel MOSFET | Eliminates external high-side switch and current-sense resistor - reduces BOM count and layout complexity. |
| 2.0MHz fixed-frequency PWM | Enables compact 1µH inductor + 4.7µF output capacitor design - achieves stable regulation with minimal footprint. |
| 100% duty cycle operation | Supports ultra-low dropout applications such as 3.3V-to-3.0V post-regulation without headroom loss. |
| Separate PGND/SGND pins | Prevents switching noise from corrupting feedback and enable signals - improves regulation accuracy and stability. |
| Thermal shutdown + current limit | Protects against sustained overload or ambient overheating - latches off until reset by cycling EN or VIN. |
Applications
| FPGA Core Power | Point-of-Load Conversion |
|---|---|
Use Scenario: Delivering tightly regulated 1.2V/1.8V to Xilinx Spartan or Intel Cyclone FPGA core logic under dynamic load steps up to 2A. IC Role / Device Role / Timing Role: Primary DC/DC step-down regulator providing low-noise, fast-transient power with PGOOD sequencing signal. Use Value: 200kHz+ bandwidth and 1.0V reference enable ±1% output accuracy across temperature and load, critical for FPGA timing closure. | Use Scenario: Generating 2.5V or 3.3V from a 5V system rail for microcontroller peripherals, sensors, or interface ICs on dense PCBs. IC Role / Device Role / Timing Role: Compact, self-contained buck converter eliminating need for external MOSFET drivers or compensation networks. Use Value: 3mm × 3mm MLF® footprint and 2.0MHz operation allow placement directly beside load - minimizing trace inductance and improving PSRR. |
| DVD/TV Recorder Power | Computing Peripherals |
Use Scenario: Supplying 1.5V and 3.3V rails to MPEG decoder SoCs and HDMI PHYs in consumer AV equipment with strict EMI limits. IC Role / Device Role / Timing Role: High-frequency buck regulator operating above 1.8MHz to shift switching harmonics beyond sensitive 480p/720p video bands. Use Value: 94% peak efficiency and integrated MOSFET reduce heat buildup in sealed enclosures - extending product lifetime. | Use Scenario: Powering USB hub controllers, card readers, or docking station logic where space and thermal budget are constrained. IC Role / Device Role / Timing Role: Adjustable-output buck regulator supporting multiple voltage standards (1.8V, 2.5V, 3.3V) via simple resistor changes. Use Value: Adjustable 1V–5.5V output with 1.0V reference simplifies BOM management across peripheral variants using same PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2307DN-LF-Z | 2A, 2MHz, integrated n-channel MOSFET; requires external bootstrap capacitor; 0.8V reference. | Higher light-load efficiency due to optional skip mode; less suitable for ultra-low dropout (max 90% duty cycle). | Select MP2307DN-LF-Z if optimizing for standby power or cost-sensitive consumer designs - but verify bootstrap routing and thermal performance at 2A. |
| TPS562201DDCR | 2A, 2MHz, integrated n-channel MOSFET; D-CAP2 control; 0.6V reference; smaller 2mm × 2mm WSON. | Superior transient response due to hysteretic-like control; no external compensation needed; lower minimum output voltage. | Choose TPS562201DDCR for high-dynamic-load applications like SSD controllers - but note stricter input voltage range (4.5–17V) excludes 2.7–5.5V use cases. |
Compared with MP2307DN-LF-Z and TPS562201DDCR, the MIC4720YML-TR uniquely combines p-channel integration (no bootstrap), 100% duty cycle, and 1.0V reference in a thermally robust MLF® package - making it optimal for low-input-voltage, low-dropout industrial and embedded systems where layout simplicity and thermal reliability are prioritized over ultra-low quiescent current.
Availability
MIC4720YML-TR is available at Aetrix Electronics and suitable for FPGA power delivery, point-of-load conversion, and DVD/TV recorder subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MIC4720YML-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 analog and power management semiconductor company headquartered in San Jose, CA, acquired by Microchip Technology in 2015. Known for high-performance PMICs and regulators targeting industrial and communications markets.
The MIC4720YML-TR belongs to Micrel's high-frequency buck regulator product line, designed specifically for space-constrained, thermally demanding applications requiring fast transient response, wide input range, and simplified layout - especially in FPGA, DSP, and consumer electronics power domains.
FAQ
What is the recommended input capacitor configuration for the MIC4720YML-TR?
Each VIN pin of the MIC4720YML-TR requires a 10µF X5R/X7R ceramic capacitor placed as close as possible to the pin and its adjacent PGND. An additional 0.1µF ceramic capacitor should be added in parallel for high-frequency filtering. Tantalum and electrolytic capacitors are not recommended due to higher ESR, ESL, and poor high-frequency performance - which can degrade stability and increase ripple in the MIC4720YML-TR's 2.0MHz operation.
Does the MIC4720YML-TR require external compensation components?
No, the MIC4720YML-TR uses proprietary internal Type III compensation optimized for 1µH inductors and 4.7µF output capacitors. External compensation is not required for standard operation. However, the datasheet provides guidelines for adding a feedforward capacitor (CFF) across the upper feedback resistor to improve phase margin and transient response - particularly beneficial when using non-standard output capacitance or higher load currents.
Can the MIC4720YML-TR operate with a 1V output voltage?
Yes, the MIC4720YML-TR supports adjustable output voltages down to 1V using the 1.0V internal feedback reference. With R1 = 10kΩ and R2 = 0Ω (shorted), the output is set to exactly 1.0V. The device maintains ±2% reference accuracy over temperature and load, ensuring stable 1V regulation for low-voltage logic rails - confirmed in typical characteristics plots showing 1VOUT efficiency across input voltages.
What is the function of the BIAS pin on the MIC4720YML-TR?
The BIAS pin on the MIC4720YML-TR supplies clean power to the internal reference and control circuitry. It must be decoupled with a 10Ω resistor from VIN and a 0.1µF ceramic capacitor to SGND. This RC filter suppresses high-frequency switching noise from the power stage, preventing corruption of the error amplifier and maintaining regulation accuracy - a critical requirement explicitly called out in the MIC4720YML-TR functional diagram and layout recommendations.
How does the MIC4720YML-TR handle thermal overload conditions?
The MIC4720YML-TR incorporates thermal shutdown that activates at approximately 160°C junction temperature, disabling the internal MOSFET until the die cools below the hysteresis threshold (typically 135°C). During shutdown, the device draws <10µA and holds PGOOD low. Recovery is automatic upon cooling - no external reset is needed. This protection is validated across the full –40°C to +125°C operating range and is integral to the MIC4720YML-TR's reliability in enclosed or high-ambient environments.
MIC4720YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 12-VFDFN Exposed Pad, 12-MLF®
- 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:
- 12-MLF™ (4x4)
MIC4720YML-TR FAQ
1.How can I place an order for MIC4720YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC4720YML-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 MIC4720YML-TR reliable?
The price and inventory of MIC4720YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC4720YML-TR is usually 5 days.
3.What payment methods are accepted for MIC4720YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC4720YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC4720YML-TR?
MIC4720YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC4720YML-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 MIC4720YML-TR?
For technical support, including MIC4720YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC4720YML-TR requirements.
6.How does Aetrix verify that MIC4720YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC4720YML-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 MIC4720YML-TR meets industry standards.
7.What is the process for return or replacement of MIC4720YML-TR?
All MIC4720YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC4720YML-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 MIC4720YML-TR part is unused and in its original packaging.
Return procedure for MIC4720YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC4720YML-TR Tags
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MC34063EBD-TR
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