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Microchip Technology MIC2208YML-TR
- Part No.:
- MIC2208YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 12-VFDFN Exposed Pad, 12-MLF®
- Datasheet:
-
MIC2208YML-TR.pdf
- Description:
- IC REG BUCK ADJ 3A 12MLF
- Quantity:
- Payment:
- Shipping:
Inventory:1,955
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Product details
Overview
MIC2208YML-TR from Micrel is a 1MHz PWM synchronous-capable buck regulator delivering up to 3A output current with adjustable output voltage down to 1V, operating from 2.7V–5.5V input, featuring external compensation, 94% peak efficiency, and thermal/current protection in a 12-pin 3mm × 3mm MLF® package for point-of-load DC/DC conversion in telecom and video systems.
For engineers reviewing the MIC2208YML-TR datasheet, MIC2208YML-TR pinout, MIC2208YML-TR application, or MIC2208YML-TR equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply support for industrial and embedded power designs.
Technical Context
The MIC2208YML-TR implements voltage-mode PWM control with an integrated 5A p-channel high-side MOSFET switch and supports type II/type III external compensation via the COMP pin for stable operation across ceramic or tantalum output capacitors. Its 1MHz fixed-frequency oscillator enables compact filter design with 1µH inductors.
It features ultra-fast transient response enabled by external compensation, 100% duty-cycle capability for low-dropout operation, and independent signal (SGND) and power (PGND) ground paths to minimize noise coupling between control and switching circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-supply operation from common 3.3V or 5V rails without pre-regulation. |
| Output Current | Up to 3A continuous - sufficient for powering FPGA I/O banks, ASIC cores, or DDR memory termination. |
| Switching Frequency | 1MHz ±10% - enables use of small 1µH inductors and reduces output ripple without compromising EMI filtering complexity. |
| Feedback Reference | 1.00V ±2% over temperature - sets output voltage via resistor divider; enables precise 1.0V–5.5V adjustment with <1% line/load regulation. |
| Efficiency | 94% typical at 3.3VOUT/4.5VIN/2A - minimizes thermal load in space-constrained modules and extends battery runtime in portable equipment. |
| Thermal Shutdown | 160°C with 20°C hysteresis - protects against sustained overload or poor PCB heatsinking while allowing safe recovery after cooling. |
| Quiescent Current | 720–950µA in active mode; <5µA in shutdown - preserves system standby power budget in always-on applications. |
Pinout & Package
The MIC2208YML-TR is housed in a Pb-free, exposed-pad 12-pin 3mm × 3mm MLF® package (θJA = 60°C/W), optimized for thermal performance in high-current DC/DC applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 12 (SW) | Switch Node Output | Connects directly to inductor; carries high di/dt switching current - requires short, wide trace routing away from sensitive analog nodes. |
| 2, 11 (VIN) | Main Power Input | Dual pins reduce IR drop and inductance; each requires local 10µF X5R ceramic bypass to PGND for stable high-frequency operation. |
| 3, 10 (PGND) | Power Ground Return | Low-impedance return path for MOSFET source current; must be connected to exposed pad and kept separate from SGND loop. |
| 4 (SGND) | Signal Ground Reference | Reference for FB, COMP, EN, PGOOD - routed separately from PGND to avoid control-loop noise injection. |
| 5 (BIAS) | Bias Supply Input | Powered via 10Ω resistor from VIN; bypassed with 0.1µF ceramic to SGND to isolate switching noise from internal reference. |
| 6 (FB) | Feedback Input | Senses output voltage via resistor divider; 1.0V reference enables accurate output setting with minimal divider error contribution. |
| 7 (COMP) | Error Amplifier Output | External compensation node - connects to type II/type III network to stabilize loop across wide capacitor ESR ranges. |
| 8 (EN) | Enable Control Input | Logic-level input (0.5–1.3V threshold); pulls device into <5µA shutdown state when driven low. |
| 9 (PGOOD) | Open-Drain Status Output | Asserts low when VOUT is within ±7.5% of target - used for sequencing or fault indication with external pull-up. |
| EP | Exposed Thermal Pad | Internally connected to GND; must be soldered to large PCB copper area for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated 5A p-channel MOSFET | Eliminates external high-side switch and current-sense resistor, reducing BOM count and layout complexity. |
| External compensation (COMP pin) | Enables stable operation with both high-ESR (tantalum) and low-ESR (ceramic) output capacitors via configurable type II/III networks. |
| 100% duty cycle capability | Supports dropout conditions where VIN ≈ VOUT, enabling use in post-regulator or battery-backed subsystems. |
| Ultra-fast transient response | Delivers rapid correction to load steps (e.g., CPU burst modes) due to high closed-loop bandwidth (>100kHz) enabled by external compensation. |
| Micropower shutdown (<5µA) | Reduces system standby power in always-on devices such as set-top boxes or network routers during idle periods. |
Applications
| 5V or 3.3V Point of Load Conversion | Telecom/Networking Equipment |
|---|---|
Use Scenario: Local regulation of 3.3V or 5V rails for FPGA I/O banks, Ethernet PHYs, or microcontroller peripherals on dense PCBs. IC Role / Device Role / Timing Role: Primary non-synchronous buck converter providing tightly regulated, low-noise DC output with fast transient response. Use Value: Enables compact, thermally efficient power delivery without external MOSFETs or sense resistors, reducing board area by >30% vs. controller-based solutions. | Use Scenario: Intermediate bus conversion in line cards, switches, or baseband units requiring reliable 1.8V/2.5V/3.3V supplies. IC Role / Device Role / Timing Role: High-efficiency step-down regulator handling dynamic load profiles typical of packet-processing ASICs. Use Value: Delivers >90% efficiency across 0.5–3A loads and maintains regulation under 100kHz transients, improving thermal margin in fanless enclosures. |
| Set Top Boxes | Video Cards |
Use Scenario: Powering SoC cores, DDR memory, and HDMI interface circuitry in consumer media devices with strict cost and size constraints. IC Role / Device Role / Timing Role: Adjustable-output buck regulator supporting multiple voltage domains from a single 5V input rail. Use Value: Simplifies BOM with single IC covering 1.0V–3.3V outputs; external compensation ensures stability with low-ESR ceramic caps required for low-profile designs. | Use Scenario: GPU core or memory rail regulation in compact graphics modules where thermal density exceeds 2W/cm². IC Role / Device Role / Timing Role: High-current (3A) buck regulator with exposed thermal pad for direct PCB heatsinking. Use Value: Achieves 94% efficiency at full load and 160°C thermal shutdown prevents damage during GPU thermal throttling events. |
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 | Fixed 3.3V or 5V output; no adjustable FB; 2A max output; integrated synchronous rectifier. | Lacks output adjustability and external compensation - suitable only for fixed-voltage, lower-current uses. | Select when simplicity and cost outweigh need for flexibility or high-current capability. |
| TPS5430DDAR | 3A output; 500kHz switching; integrated N-channel high-side FET; requires external bootstrap capacitor. | Lower frequency increases inductor size; N-FET topology demands bootstrap design; no 100% duty cycle. | Choose for TI ecosystem compatibility or when lower EMI is prioritized over compactness. |
Compared with MP2307DN-LF-Z and TPS5430DDAR, the MIC2208YML-TR uniquely combines adjustable output, external compensation for broad capacitor compatibility, 1MHz operation for miniaturization, and 100% duty cycle - making it optimal for space-constrained, multi-rail embedded systems requiring design flexibility and thermal robustness.
Availability
MIC2208YML-TR is available at Aetrix Electronics and suitable for telecom infrastructure, video processing hardware, and set-top box designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MIC2208YML-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 founded in 1978 and acquired by Microchip Technology in 2015; known for high-performance DC/DC regulators, LDOs, and timing solutions.
The MIC2208 product line was designed for high-efficiency, compact point-of-load conversion in space- and thermal-constrained applications including networking, computing, and consumer electronics.
FAQ
What is the maximum output current capability of the MIC2208YML-TR?
The MIC2208YML-TR delivers up to 3A of continuous output current under recommended thermal conditions (1oz copper, proper layout). Peak current limit is 10A in PWM mode, but sustained operation above 3A requires careful thermal design due to junction temperature limits of –40°C to +125°C and θJA = 60°C/W. Derating curves in the datasheet show ambient current limits drop to ~2.2A at 85°C ambient.
Does the MIC2208YML-TR support synchronous rectification?
No, the MIC2208YML-TR is a non-synchronous buck regulator and requires an external Schottky diode (e.g., SSA33L) for freewheeling. It integrates only a p-channel high-side MOSFET; no low-side synchronous FET or gate driver is included. This architecture simplifies design but trades off ~2–3% efficiency versus synchronous alternatives at light loads.
What compensation network is required for stable operation of the MIC2208YML-TR?
The MIC2208YML-TR requires external type II or type III compensation connected to the COMP pin. Type II is recommended for high-ESR capacitors (e.g., tantalum), while type III is required for low-ESR ceramics. Typical values include R1 = 49.9kΩ, C3 = 1nF, R4 = 499kΩ (type III), as validated in the datasheet's Bill of Materials for 1.0V/3A operation with 47µF ceramic output capacitance.
Can the MIC2208YML-TR operate with 100% duty cycle, and what does that enable?
Yes, the MIC2208YML-TR supports 100% duty cycle operation, allowing VOUT to approach VIN - critical for low-dropout scenarios like battery-powered systems near end-of-discharge or post-regulation stages. This feature avoids dropout-induced brownouts and enables seamless transition between input sources without additional LDOs.
How is power good (PGOOD) functionality implemented on the MIC2208YML-TR?
The MIC2208YML-TR provides an open-drain PGOOD output (Pin 9) that pulls low when VOUT is within ±7.5% of the regulated setpoint. It requires an external pull-up resistor (typically 10–100kΩ) to a logic-compatible voltage. A capacitor from PGOOD to ground adds delay for sequencing; the internal pull-down strength is specified at 145–250Ω, enabling direct interfacing with FPGA or microcontroller reset inputs.
MIC2208YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 12-VFDFN Exposed Pad, 12-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 3A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-MLF™ (4x4)
MIC2208YML-TR FAQ
1.How can I place an order for MIC2208YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2208YML-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 MIC2208YML-TR reliable?
The price and inventory of MIC2208YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2208YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2208YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2208YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2208YML-TR?
MIC2208YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2208YML-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 MIC2208YML-TR?
For technical support, including MIC2208YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2208YML-TR requirements.
6.How does Aetrix verify that MIC2208YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2208YML-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 MIC2208YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2208YML-TR?
All MIC2208YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2208YML-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 MIC2208YML-TR part is unused and in its original packaging.
Return procedure for MIC2208YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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