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Microchip Technology MIC22601YML-TR
- Part No.:
- MIC22601YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 24-VFQFN Exposed Pad, 24-MLF®
- Datasheet:
-
MIC22601YML-TR.pdf
- Description:
- IC REG BUCK ADJ 6A 24MLF
- Quantity:
- Payment:
- Shipping:
Inventory:2,821
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Product details
Overview
MIC22601YML-TR from Microchip Technology is a 4 MHz, 6A integrated synchronous buck regulator with fully integrated MOSFETs, adjustable output down to 0.7V, ultra-fast transient response, and full sequencing/tracking capability for multi-rail FPGA/DSP power systems.
For engineers reviewing the MIC22601YML-TR datasheet, MIC22601YML-TR pinout, MIC22601YML-TR application, or MIC22601YML-TR equivalent, this page delivers verified electrical specs, QFN-24 package layout, real-world sequencing use cases, and validated alternative parts for high-density point-of-load designs.
Technical Context
The MIC22601YML-TR implements voltage-mode PWM control at a fixed 4 MHz switching frequency with adaptive drive for internal P-channel (30 mΩ) and N-channel (25 mΩ) MOSFETs. Its control loop uses an internal 0.7V reference and RC-based compensation optimized for ceramic output capacitors as low as 22 μF.
Sequencing and tracking are enabled via three dedicated pins: EN/DLY (1.24V threshold, 1 μA current source), DELAY (1 μA charge/discharge for POR timing), and RC (1 μA ramp control for soft-start and inter-device voltage alignment). All operate across –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.6V to 5.5V - supports single-supply operation from common intermediate bus rails (3.3V, 5V) without external LDO pre-regulation. |
| Output Current | Up to 6A continuous - delivers full rated load with thermal shutdown protection at ≤+125°C junction temperature. |
| Switching Frequency | 4 MHz (typ), 3.2–4.8 MHz (min–max) - enables ultra-small passive components (0.22 μH inductor, 22 μF output cap) and reduces EMI fundamental frequency. |
| Feedback Reference | 0.7V ±2% over temperature - sets output voltage via resistor divider; allows precise 0.7V–5.5V adjustment with minimal error amplifier drift. |
| Efficiency | >90% at 1.8V/6A (VIN = 3.6V) - achieved via low RDS(ON) switches (P-FET: 30 mΩ, N-FET: 25 mΩ) and optimized gate drive. |
| Thermal Resistance | θJA = 40°C/W, θJC = 14°C/W - requires exposed pad soldered to PCB ground plane for full 6A performance and thermal derating compliance. |
| Protection Features | Current-limit (6–14A), thermal shutdown (160°C), UVLO (2.5V turn-on), and Power-Good open-drain output - ensures robust fault recovery in FPGA core rail applications. |
Pinout & Package
Package: 24-pin 4 mm × 4 mm QFN (ML) with exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN (1,6,13,18) | Power input supply | Bypass each PVIN pin with ≥10 μF X5R/X7R ceramic capacitor to PGND; connects to internal P-MOSFET source. |
| SVIN (17) | Signal input supply | Provides clean bias for internal analog circuitry; bypass separately to SGND with 10 μF ceramic. |
| EN (2) | Enable/Delay input | 1.24V threshold with 1 μA internal current source; capacitor on this pin sets startup delay before regulation begins. |
| RC (4) | Ramp control | 1 μA current source/sink; external capacitor sets output voltage slew rate for soft-start and tracking alignment with other MIC22xxx devices. |
| FB (14) | Feedback input | Connects to resistor divider; compares against 0.7V reference to regulate output; high-impedance (1 nA input current) node requiring noise mitigation. |
| COMP (15) | Compensation node | External RC network (e.g., 20 kΩ + 10 pF) stabilizes voltage-mode loop; designed for ceramic caps and 0.22 μH inductors. |
| POR/PG (5) | Power-on-reset output | Open-drain signal asserted high when VOUT ≥90% nominal and after DELAY pin timeout; used for system reset coordination. |
| SW (8,9,10,11,20,21,22,23) | Switch node | Drain connection of internal P/N-MOSFETs; high-frequency, high-current path requiring short/wide PCB traces and optional Schottky diode to PGND. |
| PGND (7,12,19,24) | Power ground | Source connection of internal N-MOSFETs; must be low-inductance path to EP and input/output capacitors. |
| SGND (16) | Signal ground | Reference for FB, COMP, EN, RC, DELAY, and POR; separate from PGND to avoid noise coupling into control loop. |
| DELAY (3) | Delay timing input | 1 μA current source charges external capacitor after FB reaches 90%; determines POR assertion delay with matched rise/fall timing. |
| EP | Exposed thermal pad | Must be soldered to solid PCB ground plane for thermal conduction and full 6A current capability; electrically connected to PGND internally. |
Key Features
| Feature | Design Value |
|---|---|
| 100% duty cycle operation | Enables dropout mode during low-input conditions (e.g., battery sag), maintaining regulation down to VOUT + VDS(ON) without shutdown. |
| Full sequencing & tracking | EN/DLY, DELAY, and RC pins enable four distinct multi-rail configurations (delayed, windowed, normal, ratio-metric) without external controllers. |
| Ultra-fast transient response | Stable under ±3A step loads at 1.8V with <1% deviation; enabled by 4 MHz bandwidth and RC-compensated voltage-mode loop. |
| Micropower shutdown | 5–10 μA shutdown current - preserves battery life in always-on systems; activated by pulling EN below 1.14V. |
| Integrated MOSFETs | Eliminates external high-side P-FET and low-side N-FET; reduces BOM count, layout area, and gate-drive complexity in space-constrained PoL designs. |
Applications
| High-Density Point-of-Load Conversion | Servers and Routers |
|---|---|
Use Scenario: Delivering 1.8V/6A to FPGA core logic in compact server blade modules where board area is constrained and thermal management is critical. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing tightly regulated, fast-transient core voltage with programmable soft-start and sequencing relative to I/O rails. Use Value: Enables 4 MHz switching to shrink inductor size to 0.22 μH and output capacitance to 22 μF, reducing total solution footprint by >40% vs. 1 MHz alternatives. | Use Scenario: Powering multiple ASICs and network processors in 1U rack-mounted routers requiring coordinated power-up/down sequences. IC Role / Device Role / Timing Role: Master/slave configured MIC22601YML-TR units implement windowed sequencing to ensure core voltage stabilizes before I/O voltage ramps, preventing latch-up. Use Value: DELAY and RC pins eliminate need for external sequencer ICs, reducing component count and enabling precise ∆V tracking (<50 mV) between 1.2V and 1.5V rails. |
| Blu-Ray/DVD Players | FPGAs, DSP, and Low-Voltage ASICs |
Use Scenario: Supplying 1.2V/3A and 3.3V/2A to servo motor controllers and video decoding SoCs in consumer optical drives with strict EMI limits. IC Role / Device Role / Timing Role: Dual MIC22601YML-TR regulators operate in tracking mode to maintain fixed voltage ratio during startup, minimizing inrush current peaks. Use Value: 4 MHz fixed-frequency PWM avoids variable-frequency noise bands that interfere with analog audio/video circuits; integrated MOSFETs reduce radiated emissions. | Use Scenario: Providing dynamic core voltage (0.7V–1.2V) to Xilinx Kintex or Intel Arria FPGAs during partial reconfiguration events with rapid load transients. IC Role / Device Role / Timing Role: Core rail regulator with ultra-fast transient response and programmable slew rate via RC pin to match FPGA VCCINT slew requirements. Use Value: Achieves <±1% output deviation under 3A/μs load steps - meets Xilinx DC and AC accuracy specs without external compensation tuning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC22602YML-TR | Same 24-pin QFN package, identical pinout, but fixed 1.8V output (non-adjustable); lacks RC and DELAY pins. | Only suitable for single-rail, non-sequenced 1.8V applications; cannot support tracking or multi-rail coordination. | Select MIC22602YML-TR only when output voltage is fixed and sequencing is unnecessary - reduces design complexity but sacrifices flexibility. |
| TPS546B24RVFT | 6A, 4MHz buck with PMBus interface, 0.6V reference, and digital loop compensation; 28-pin 4.5mm × 3.5mm VQFN. | Supports telemetry, margining, and dynamic voltage scaling via I²C; requires firmware integration and adds layout complexity. | Choose TPS546B24RVFT when digital monitoring, remote configuration, or adaptive loop tuning is required - not a drop-in replacement due to different pin count and communication protocol. |
Compared with MIC22602YML-TR, the MIC22601YML-TR provides full adjustability and sequencing control at the cost of slightly higher BOM count; versus TPS546B24RVFT, it offers simpler analog implementation and lower system-level integration overhead but no digital configurability.
Availability
MIC22601YML-TR is available at Aetrix Electronics and suitable for high-power-density point-of-load conversion, FPGA core rail supply, and multi-rail sequencing applications requiring stable component supply across industrial, computing, and consumer electronics programs.
Supply support for MIC22601YML-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
Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with a focus on reliability, longevity, and broad ecosystem support.
The MIC22601YML-TR belongs to Microchip's MIC22xxx family of high-frequency, high-current integrated buck regulators, engineered specifically for space-constrained, multi-rail FPGA/ASIC power delivery with deterministic sequencing and minimal external components.
FAQ
What is the minimum output capacitor value supported by the MIC22601YML-TR?
The MIC22601YML-TR is specified to operate stably with a minimum 22 μF ceramic output capacitor (X5R or X7R dielectric). Using less than 22 μF risks loop instability and poor transient response. The device is optimized for 47 μF in typical 1.8V/6A applications, and larger values improve hold-up time but require compensation adjustment per Table 5-1 in the datasheet.
Does the MIC22601YML-TR support 100% duty cycle operation, and under what conditions?
Yes, the MIC22601YML-TR supports 100% duty cycle operation when the feedback voltage falls to ≤0.5V - enabling dropout mode during low-input conditions such as battery voltage sag. This maintains regulation down to VOUT + VDS(ON) without forcing shutdown, which is critical for uninterrupted FPGA core operation.
How is sequencing implemented between two MIC22601YML-TR devices?
Sequencing is implemented using the EN/DLY, DELAY, and RC pins: one device acts as master (driving its RC pin to another's EN pin), while DELAY capacitors set staggered POR assertion times. Figure 5-2 in DS20006295A shows a delayed sequencing circuit where CDLY1 and CDLY2 create controlled turn-on offsets, ensuring core voltage stabilizes before I/O rails.
What is the purpose of the SGND and PGND separation in the MIC22601YML-TR?
SGND (pin 16) serves as the quiet reference for analog control circuitry (FB, COMP, EN, RC, DELAY, POR), while PGND (pins 7,12,19,24) carries high-frequency switch-node return current. Separating them prevents noise coupling from power switching into the feedback loop - essential for maintaining regulation accuracy and stability, especially at 4 MHz switching frequency.
Can the MIC22601YML-TR be used with an input voltage below 2.6V?
No, the MIC22601YML-TR has a guaranteed operating input range of 2.6V to 5.5V. Operation below 2.6V violates the Absolute Maximum Rating for UVLO turn-on (2.4V min) and may result in erratic startup, failure to regulate, or undefined behavior. For sub-2.6V inputs, consider Microchip's MIC24045 or alternate low-VIN buck solutions.
MIC22601YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad, 24-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):
- 2.6V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.7V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 6A
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-MLF® (4x4)
MIC22601YML-TR FAQ
1.How can I place an order for MIC22601YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC22601YML-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 MIC22601YML-TR reliable?
The price and inventory of MIC22601YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC22601YML-TR is usually 5 days.
3.What payment methods are accepted for MIC22601YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC22601YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC22601YML-TR?
MIC22601YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC22601YML-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 MIC22601YML-TR?
For technical support, including MIC22601YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC22601YML-TR requirements.
6.How does Aetrix verify that MIC22601YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC22601YML-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 MIC22601YML-TR meets industry standards.
7.What is the process for return or replacement of MIC22601YML-TR?
All MIC22601YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC22601YML-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 MIC22601YML-TR part is unused and in its original packaging.
Return procedure for MIC22601YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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