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Microchip Technology MIC26600YJL-TR
- Part No.:
- MIC26600YJL-TR
- Manufacturer:
- Microchip Technology
- Package:
- 28-PowerVQFN
- Datasheet:
-
MIC26600YJL-TR.pdf
- Description:
- IC REG BUCK ADJ 7A 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:486
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Product details
Overview
MIC26600YJL-TR from Micrel is a 7A synchronous DC-DC buck regulator with Hyper Speed Control™ architecture, operating from 4.5V to 26V input and delivering adjustable output down to 0.8V (±1% accuracy) at 300kHz switching frequency. It integrates high-side and low-side N-channel MOSFETs (RDS(ON) = 28mΩ / 11mΩ), supports pre-biased start-up, and targets point-of-load regulation in communications infrastructure and embedded power systems.
For engineers reviewing the MIC26600YJL-TR datasheet, MIC26600YJL-TR pinout, MIC26600YJL-TR application, or MIC26600YJL-TR equivalent, key selection criteria include its adaptive ON-time control for fast transient response, Any Capacitor™ stability across ESR ranges, thermal shutdown at 155°C, 6ms internal soft-start, and MLF® 28-pin 5mm × 6mm package compatibility with high-density PCB layouts.
Technical Context
The MIC26600YJL-TR implements a digitally modified adaptive ON-time control scheme that estimates tON as VOUT/VIN × (1/300kHz), enabling fixed-frequency operation while retaining rapid load-step response. Its control loop uses feedback voltage ripple (20–100mV recommended) sensed at the FB pin to trigger switching, eliminating slope compensation.
Over-current protection leverages internal low-side MOSFET RDS(ON) sensing without external resistors, with foldback current limit (7.5–15A threshold) and hiccup-mode short-circuit response. Thermal management includes 155°C shutdown with 10°C hysteresis and θJA = 36°C/W for the MLF® package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 26V - Supports wide industrial and telecom input rails including 12V and 24V systems. |
| Output Voltage | Adjustable 0.8V to 5.5V (±1% @ 0°C–85°C) - Enables precise core voltage regulation for FPGAs, ASICs, and processors. |
| Max Output Current | 7A continuous - Delivers high current in compact footprint without external current-sense components. |
| Switching Frequency | 300kHz (±25kHz) - Balances efficiency, EMI, and inductor size; stable across input/output conditions. |
| Efficiency | Up to 95% - Achieved via low RDS(ON) integrated MOSFETs (28mΩ/11mΩ) and optimized gate drive. |
| Soft-Start Time | 6ms internal - Limits inrush current during power-up; eliminates need for external timing components. |
| Junction Temp Range | −40°C to +125°C - Qualified for extended industrial and networking environments. |
Pinout & Package
Package: 28-pin MLF® (MicroLeadFrame), 5mm × 6mm, exposed thermal pad, Pb-free finish. Pinout validated per Micrel MIC26600 datasheet Rev. M9999-070111-C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 13–19 (PVIN) | High-side MOSFET drain input | Primary power input path; requires local ceramic bypass to PGND; shared among 7 pins for low-impedance VIN routing. |
| 24 (EN) | Enable control input | CMOS-compatible logic enable: high/floating = on, low = shutdown (IQ ≈ 0.7mA); supports sequencing. |
| 25 (FB) | Feedback reference input | Senses output via resistor divider; regulated to 0.8V ±1%; determines output voltage and loop stability. |
| 26 (SGND) | Signal ground reference | Separate analog ground plane connection; must not be tied to PGND on top layer to avoid noise coupling. |
| 27 (VDD) | Bias supply input | 4.5V–5.5V internal control rail; requires 2.2µF ceramic capacitor to PGND adjacent to pin. |
| 2,5–8,21 (PGND) | Power ground return | Low-impedance return for both MOSFETs and input/output capacitors; forms critical high-current loop with PVIN/SW. |
| 22 (CS) | Current sense input | Monitors low-side MOSFET voltage during OFF-time for over-current detection; routed away from sensitive nodes. |
| 20 (BST) | Bootstrap supply output | Drives high-side gate via 0.1µF BST capacitor to SW; Schottky diode required between VDD and BST. |
| 4,9–12 (SW) | Switch node output | Internal connection of high-side source and low-side drain; high dv/dt node requiring tight layout and minimal trace area. |
| 23 (VIN) | Secondary bias input | Supplies auxiliary circuitry; requires bypass capacitor to SGND; independent of PVIN path. |
| 1,3,28 (NC) | No-connect terminals | Not internally bonded; must remain unconnected and un-routed to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Hyper Speed Control™ architecture | Enables high delta-V operation (26VIN/0.8VOUT) and reduces required output capacitance by >50% vs. conventional buck controllers. |
| Any Capacitor™ stability | Stable with zero-ESR (ceramic) to high-ESR (tantalum, OS-CON) output capacitors - eliminates capacitor selection constraints. |
| Integrated MOSFETs | 28mΩ high-side + 11mΩ low-side RDS(ON) - Eliminates external power switches and associated gate-drive complexity. |
| Foldback current limit & hiccup mode | Current threshold drops from 15A to 6A as FB voltage falls; triggers repeated soft-start cycles during hard shorts - protects IC and load without latch-off. |
| Pre-biased output start-up | Safe start into existing output voltage - prevents reverse current flow and enables hot-swap capability in redundant power systems. |
Applications
| Distributed Power Systems | Communications Infrastructure |
|---|---|
Use Scenario: Intermediate bus conversion in multi-rail server or telecom shelf where 48V or 24V backplane supplies multiple point-of-load regulators. IC Role / Device Role / Timing Role: Primary synchronous buck converter delivering 1.2V/7A to FPGA or ASIC core rails with tight regulation under dynamic load steps. Use Value: Hyper Speed Control™ achieves <5% output deviation during 5A/µs load transients, reducing bulk capacitance by 3× versus fixed-frequency alternatives. | Use Scenario: Powering line cards, packet processors, and SerDes interfaces in routers, switches, and base station equipment. IC Role / Device Role / Timing Role: High-efficiency step-down regulator converting 12V mid-rail to 3.3V or 1.8V for high-speed digital logic and memory interfaces. Use Value: 95% peak efficiency at 12VIN/3.3VOUT minimizes thermal load in air-cooled chassis; MLF® package enables dense board placement. |
| Set-Top Boxes & Gateways | Printers & Graphic Cards |
Use Scenario: Main SoC power supply in consumer broadband gateways requiring low standby power and reliable cold-start behavior. IC Role / Device Role / Timing Role: Primary 1.0V/5A regulator for ARM-based applications processors with dynamic voltage scaling support. Use Value: 0.7mA shutdown current and 6ms soft-start ensure compliance with Energy Star® standby requirements and prevent inrush tripping. | Use Scenario: GPU core voltage regulation in desktop graphics cards where space, thermal performance, and transient response are critical. IC Role / Device Role / Timing Role: High-current buck stage delivering 0.9V–1.2V to discrete GPUs under burst-mode workloads. Use Value: Pre-biased start-up allows seamless power sequencing with PCIe slot power; thermal shutdown at 155°C prevents damage during fan failure events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z (Monolithic Power Systems) | 3A rated, 2MHz switching, smaller 8-pin SOIC package; lacks pre-bias start-up and hiccup-mode protection. | Suitable for lower-current, space-constrained designs where 2MHz enables ultra-small inductors but thermal derating limits 7A operation. | Select MP2451DT-LF-Z only when output current ≤3A and board area is premium; MIC26600YJL-TR remains preferred for full 7A industrial loads. |
| TPS54560QPWPRQ1 (Texas Instruments) | 6A rated, 100kHz–2.5MHz adjustable frequency, automotive AEC-Q100 qualified; requires external compensation and current-sense resistor. | Targeted at automotive infotainment and ADAS modules needing qualification and flexible frequency tuning, not drop-in replacement. | Choose TPS54560QPWPRQ1 for AEC-Q100-compliant designs; MIC26600YJL-TR offers higher current, integrated FETs, and simpler layout for industrial use cases. |
Compared with MP2451DT-LF-Z and TPS54560QPWPRQ1, the MIC26600YJL-TR delivers 7A continuous current with integrated MOSFETs, eliminates external compensation and current-sense components, and provides unique Hyper Speed Control™ for sub-10µs transient recovery-making it optimal for high-density, high-reliability industrial and networking power stages.
Availability
MIC26600YJL-TR is available at Aetrix Electronics and suitable for distributed power systems, communications infrastructure, and embedded computing applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MIC26600YJL-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 mixed-signal semiconductor company specializing in power management, timing, and interface solutions before its acquisition by Microchip Technology in 2015.
The MIC26600YJL-TR belongs to Micrel's SuperSwitcher II™ family, engineered for high-efficiency, high-current DC-DC conversion in space-constrained industrial and networking equipment where fast transient response and capacitor flexibility are critical.
FAQ
What is the maximum input voltage rating for the MIC26600YJL-TR?
The MIC26600YJL-TR has an absolute maximum PVIN-to-PGND rating of +28V, with recommended continuous operation limited to 4.5V–26V per datasheet specifications. Exceeding 26V may trigger undervoltage lockout or degrade reliability; the 28V absolute max applies only for transient conditions per Absolute Maximum Ratings table.
Does the MIC26600YJL-TR require external compensation components?
No, the MIC26600YJL-TR features internal compensation as stated in the datasheet Features list. Its adaptive ON-time control architecture eliminates the need for external Type-II or Type-III compensation networks, simplifying design and reducing BOM count while maintaining stability across all supported output capacitor types.
How does the MIC26600YJL-TR achieve stability with ceramic output capacitors?
The MIC26600YJL-TR achieves stability with zero-ESR ceramic capacitors through its Any Capacitor™ architecture, which injects controlled ripple into the feedback path to ensure sufficient signal for the gm amplifier. When using low-ESR ceramics, external ripple injection (via RC network on FB pin) is recommended to maintain ≥20mVpp feedback ripple, as specified in the Application Information section.
What thermal protection mechanisms are built into the MIC26600YJL-TR?
The MIC26600YJL-TR incorporates thermal shutdown at 155°C junction temperature with 10°C hysteresis, plus thermal derating curves showing output current reduction above 75°C ambient. Its 36°C/W θJA (MLF® 5mm × 6mm) enables 7A operation up to +85°C ambient with proper PCB copper area, as verified in Thermal Derating plots on page 9 of the datasheet.
Can the MIC26600YJL-TR safely start up into a pre-biased output voltage?
Yes, the MIC26600YJL-TR explicitly supports safe start-up into a pre-biased output, as confirmed in the Features list and Functional Description section. This capability prevents reverse current flow during hot-swap or multi-rail sequencing scenarios, making it suitable for redundant power architectures and systems with backup supplies.
MIC26600YJL-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- Hyper Speed Control®, SuperSwitcher II™
- Package/Case:
- 28-PowerVQFN
- 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):
- 26V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 7A
- Frequency - Switching:
- 300kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QFN (5x6)
MIC26600YJL-TR FAQ
1.How can I place an order for MIC26600YJL-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC26600YJL-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 MIC26600YJL-TR reliable?
The price and inventory of MIC26600YJL-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC26600YJL-TR is usually 5 days.
3.What payment methods are accepted for MIC26600YJL-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC26600YJL-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC26600YJL-TR?
MIC26600YJL-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC26600YJL-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 MIC26600YJL-TR?
For technical support, including MIC26600YJL-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC26600YJL-TR requirements.
6.How does Aetrix verify that MIC26600YJL-TR is sourced from the original manufacturer or authorized distributors?
All MIC26600YJL-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 MIC26600YJL-TR meets industry standards.
7.What is the process for return or replacement of MIC26600YJL-TR?
All MIC26600YJL-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC26600YJL-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 MIC26600YJL-TR part is unused and in its original packaging.
Return procedure for MIC26600YJL-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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