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Microchip Technology MIC45116-1YMP-TR
- Part No.:
- MIC45116-1YMP-TR
- Manufacturer:
- Microchip Technology
- Package:
- 52-PowerBFQFN
- Datasheet:
-
MIC45116-1YMP-TR.pdf
- Description:
- IC REG BUCK ADJ 6A 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,230
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Product details
Overview
MIC45116-1YMP-TR from Microchip Technology is a synchronous step-down regulator module with integrated controller, power MOSFETs, bootstrap diode, bootstrap capacitor, and inductor in a single 52-pin QFN package. It delivers up to 6A output current, supports 4.75V–20V input, regulates output from 0.8V to 85% of PVIN with ±1% accuracy, and operates at fixed 600 kHz switching frequency with HyperLight Load® optimization for light-load efficiency.
For engineers reviewing the MIC45116-1YMP-TR datasheet, MIC45116-1YMP-TR pinout, MIC45116-1YMP-TR application, or MIC45116-1YMP-TR equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and protection features, real-world load transient behavior, and precise alternative selection guidance for high-density point-of-load designs in networking and FPGA power systems.
Technical Context
The MIC45116-1YMP-TR implements adaptive ON-time control architecture to maintain constant 600 kHz switching frequency under steady-state conditions while enabling fast transient response via variable OFF-time adjustment. Its internal soft-start ramps the 0.8V reference in ~3.3 ms using digital staircase steps, and it supports safe start-up into pre-biased outputs without reverse current flow.
Current limiting is achieved by sensing voltage across the integrated low-side MOSFET's RDS(ON) (16 mΩ typ.) combined with an external resistor on the ILIM pin, triggering hiccup-mode protection when VCL exceeds –14 mV. Thermal shutdown activates at 160°C with 15°C hysteresis, and the device sustains operation from –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 6A continuous - enables single-module power delivery for FPGAs and ASICs without parallel staging. |
| Input Voltage Range | 4.75V to 20V - supports wide industrial and telecom supply rails including 5V, 12V, and 19V bus systems. |
| Output Voltage Accuracy | ±1% over temperature - ensures stable core voltage regulation for sensitive logic devices like DSPs and processors. |
| Switching Frequency | Fixed 600 kHz (400–750 kHz range) - balances EMI performance and inductor size for compact PCB layouts. |
| Efficiency | >93% peak - minimizes thermal load and eliminates need for forced air cooling in dense server applications. |
| Junction Temperature Range | –40°C to +125°C - qualified for industrial and base station environments with no derating up to max ambient. |
| Thermal Resistance | θJA = 22°C/W - enables high-power operation with standard 4-layer PCB and thermal vias to internal PGND ePAD. |
Pinout & Package
Package: 52-pin 8 mm × 8 mm × 3 mm QFN with exposed PGND, SW, and VOUT ePADs for thermal and electrical integrity. Pin mapping validated per DS20005571A-page 18 Table 3-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN (Pins 1,2,52) | High-side MOSFET drain connection | Primary power input node; requires local ceramic input capacitor to PGND for high-frequency decoupling. |
| SW (Pins 8–10,48–51) | Switch node | Connects directly to internal high- and low-side MOSFETs; carries full switching current and dV/dt stress-must be routed short and away from analog traces. |
| VOUT (Pins 12–21,32–34,40,41) | Regulated output | Direct connection to integrated inductor; multiple pins reduce IR drop and improve current sharing for 6A loads. |
| PGND (Pins 26,31,35,42,45 + ePAD) | Power ground return | Low-impedance path for high-side and low-side MOSFET currents; must be tied to system ground plane with multiple thermal vias. |
| FB (Pin 36) | Feedback input | Senses output via resistor divider referenced to 0.8V internal reference; supports ±1% output accuracy and ripple injection for stability. |
| EN (Pin 38) | Enable control | TTL/CMOS-compatible input with internal 1 MΩ pull-down; logic-high ≥1.8V enables regulation, logic-low ≤0.6V disables with <10 µA shutdown current. |
| PG (Pin 37) | Open-drain Power Good | Asserts low when VFB reaches 85–95% of target; requires external 10 kΩ pull-up for system sequencing and fault monitoring. |
| ILIM (Pin 47) | Adjustable current limit | Connects to SW through external resistor to set overcurrent threshold; enables programmable hiccup-mode protection without external sense resistors. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® mode | Enables discontinuous conduction at light loads, reducing quiescent current to 0.35 mA typ. and maintaining >85% efficiency at 10 mA output. |
| Integrated magnetics | Includes 1.0 µH inductor, eliminating external inductor selection, layout sensitivity, and EMI filter complexity. |
| Safe pre-biased start-up | Prevents reverse current flow during enable into existing VOUT voltage-critical for hot-swap and multi-rail sequencing. |
| Hiccup-mode short-circuit protection | Enters controlled restart cycle upon hard short, limiting average power dissipation and preventing thermal runaway. |
| Adaptive ON-time control | Delivers fixed 600 kHz frequency under steady state while dynamically adjusting OFF-time for sub-10 µs load transient recovery. |
Applications
| High-Density Point-of-Load Conversion | FPGA Core Power Supply |
|---|---|
Use Scenario: Compact board space in AI accelerator cards requiring localized 0.8V/6A supply near FPGA die. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated core voltage with integrated inductor and MOSFETs. Use Value: Eliminates discrete power stage design effort and reduces BOM count by 12+ components while achieving >93% efficiency at full load. | Use Scenario: Powering Xilinx Kintex or Intel Stratix FPGA cores with tight voltage tolerance and fast load-step response. IC Role / Device Role / Timing Role: Adaptive ON-time DC/DC module providing ±1% output accuracy and sub-50 µs transient recovery from 0.5A to 6A steps. Use Value: Reduces required output capacitance by 30% versus conventional controllers due to Hyper Speed Control® architecture. |
| Telecom Base Station RF Power | Industrial PLC I/O Module |
Use Scenario: Generating 3.3V/4A supply for RF transceiver ICs in 5G small cell units operating in sealed enclosures. IC Role / Device Role / Timing Role: High-efficiency, thermally robust power module supporting –40°C to +125°C junction operation without derating. Use Value: Achieves 22°C/W θJA with standard PCB layout, enabling convection-only cooling and eliminating fan dependency. | Use Scenario: Providing isolated 1.8V/3A rail for ARM Cortex-M7 microcontrollers and precision ADCs in factory automation controllers. IC Role / Device Role / Timing Role: Regulator with EN-controlled sequencing, open-drain PG output, and adjustable current limit for system-level fault management. Use Value: Enables deterministic power-up timing, brown-out detection via PG, and configurable overcurrent trip for field-replaceable I/O modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC45116-2YMP-TR | Uses Hyper Speed Control® instead of HyperLight Load®; higher quiescent current (1.03 mA vs. 0.35 mA), optimized for ultra-fast transient response. | Better suited for applications requiring minimal output capacitance and aggressive load steps (e.g., CPU cores), less optimal for always-on low-power subsystems. | Select MIC45116-2YMP-TR when transient response dominates efficiency at light load; otherwise retain MIC45116-1YMP-TR for battery-backed or energy-sensitive systems. |
| TPSM84624IRVET | TI module with 6A rating, 4.5–18V input, but fixed 600 kHz frequency and no adjustable current limit; lacks pre-biased start-up support. | Requires external circuitry for safe pre-bias operation and offers no hiccup-mode short-circuit recovery-less robust in harsh industrial environments. | Choose TPSM84624IRVET only if TI ecosystem alignment and simplified feedback (no resistor divider needed) outweigh missing safety features. |
Compared with MIC45116-2YMP-TR, the MIC45116-1YMP-TR trades transient speed for superior light-load efficiency and simpler thermal management; versus TPSM84624IRVET, it provides critical reliability features-pre-biased start-up, adjustable current limit, and hiccup-mode protection-without external component additions.
Availability
MIC45116-1YMP-TR is available at Aetrix Electronics and suitable for high-density point-of-load conversion, FPGA core power supplies, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MIC45116-1YMP-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 Inc. is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with vertically integrated silicon and software platforms.
The MIC45116 product line delivers fully integrated, high-current DC/DC regulator modules targeting space-constrained, high-efficiency applications in networking infrastructure, data center equipment, and programmable logic systems.
FAQ
What is the maximum output current capability of the MIC45116-1YMP-TR?
The MIC45116-1YMP-TR delivers up to 6A continuous output current across its full operating temperature range (–40°C to +125°C junction), verified under 4.75V–20V input conditions with adequate PCB thermal design. This rating assumes use of the recommended 52-pin QFN package with proper ePAD grounding and thermal vias, and does not require external heatsinking at ambient temperatures ≤70°C.
Does the MIC45116-1YMP-TR support start-up into a pre-biased output voltage?
Yes, the MIC45116-1YMP-TR supports safe start-up into a pre-biased output. Its control architecture prevents reverse current flow during enable activation, allowing reliable operation when VOUT is already present-critical for hot-swap systems and multi-rail power sequencing. This behavior is confirmed in Figure 2-43 of the official datasheet DS20005571A.
How is output voltage programmed on the MIC45116-1YMP-TR?
The MIC45116-1YMP-TR uses a resistor divider from VOUT to FB to set output voltage, referenced to an internal 0.8V precision bandgap. The formula is VOUT = 0.8V × (1 + RFB1/RFB2). Output is adjustable from 0.8V up to 85% of PVIN with ±1% accuracy over temperature, and ripple injection between FB and SW may be required for stability with low-ESR capacitors.
What protection features are integrated into the MIC45116-1YMP-TR?
The MIC45116-1YMP-TR integrates thermal shutdown (160°C trip with 15°C hysteresis), hiccup-mode short-circuit protection, adjustable current limiting via the ILIM pin, UVLO on 5VDD, and internal soft-start. All protections operate autonomously without external components, and the device resumes normal operation after fault clearance without requiring reset.
What is the purpose of the ILIM pin on the MIC45116-1YMP-TR?
The ILIM pin on the MIC45116-1YMP-TR allows programming of the overcurrent threshold by connecting an external resistor between ILIM and SW. This sets the current limit based on the integrated low-side MOSFET's RDS(ON), enabling configurable hiccup-mode protection without adding external sense resistors or complex monitoring circuitry.
MIC45116-1YMP-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 52-PowerBFQFN
- 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):
- 4.75V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 17V
- Current - Output:
- 6A
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-QFN (8x8)
MIC45116-1YMP-TR FAQ
1.How can I place an order for MIC45116-1YMP-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC45116-1YMP-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 MIC45116-1YMP-TR reliable?
The price and inventory of MIC45116-1YMP-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC45116-1YMP-TR is usually 5 days.
3.What payment methods are accepted for MIC45116-1YMP-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC45116-1YMP-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC45116-1YMP-TR?
MIC45116-1YMP-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC45116-1YMP-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 MIC45116-1YMP-TR?
For technical support, including MIC45116-1YMP-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC45116-1YMP-TR requirements.
6.How does Aetrix verify that MIC45116-1YMP-TR is sourced from the original manufacturer or authorized distributors?
All MIC45116-1YMP-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 MIC45116-1YMP-TR meets industry standards.
7.What is the process for return or replacement of MIC45116-1YMP-TR?
All MIC45116-1YMP-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC45116-1YMP-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 MIC45116-1YMP-TR part is unused and in its original packaging.
Return procedure for MIC45116-1YMP-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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