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Microchip Technology MIC45116-1YMP-T1
- Part No.:
- MIC45116-1YMP-T1
- Manufacturer:
- Microchip Technology
- Package:
- 52-PowerBFQFN
- Datasheet:
-
MIC45116-1YMP-T1.pdf
- Description:
- IC REG BUCK ADJ 6A 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,618
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Product details
Overview
MIC45116-1YMP-T1 from Microchip Technology is a synchronous step-down regulator module with adaptive ON-time control, delivering up to 6A output current at 0.8V–85% of input voltage (±1% accuracy), fixed 600 kHz switching frequency, and HyperLight Load® operation for high light-load efficiency. It integrates controller, power MOSFETs, bootstrap diode, bootstrap capacitor, and inductor in an 8 mm × 8 mm × 3 mm QFN package-designed for high-power-density point-of-load conversion in FPGAs and ASICs.
For engineers reviewing the MIC45116-1YMP-T1 datasheet, MIC45116-1YMP-T1 pinout, MIC45116-1YMP-T1 application, or MIC45116-1YMP-T1 equivalent, this page delivers verified technical context, validated pin functions, confirmed thermal and protection features, real-world application mappings, and two rigorously cross-checked alternative parts for FPGA/DSP power supply design.
Technical Context
The MIC45116-1YMP-T1 employs adaptive ON-time control to maintain stable 600 kHz switching under steady-state conditions while enabling variable-frequency discontinuous-mode operation under light loads via HyperLight Load®. Its internal 1.0 µH inductor, integrated low-side RDS(ON) sensing, and 150 ns blanking time support accurate current limiting.
It implements hiccup-mode short-circuit protection triggered by VCL = –14 mV threshold, thermal shutdown at +160°C (15°C hysteresis), and safe start-up into pre-biased outputs. The 0.8V feedback reference is trimmed to ±1% over –40°C to +125°C junction temperature, with FB bias current ≤500 nA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 6A continuous-supports FPGA core rails without external cooling across 4.75V–20V input. |
| Input Voltage Range | 4.75V to 20V-enables direct use with 5V, 12V, and 19V intermediate bus architectures. |
| Output Voltage Accuracy | ±1% over –40°C to +125°C-ensures reliable 1.8V/1.2V/0.85V ASIC/FPGA core regulation. |
| Switching Frequency | Fixed 600 kHz (400–750 kHz range)-balances EMI, size, and efficiency for compact POL designs. |
| Efficiency Peak | >93% at mid-load-reduces thermal load in dense server and networking PCB layouts. |
| Junction Temperature | –40°C to +125°C operational range-qualified for industrial and telecom base station environments. |
| Thermal Resistance | θJA = 22°C/W (measured on eval board)-validates thermal performance with standard 4-layer PCB layout. |
Pinout & Package
Package: 52-pin 8 mm × 8 mm × 3 mm QFN with exposed PGND, SW, and VOUT ePADs-requires thermal vias to inner ground plane per Microchip layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN (Pins 1,2,52) | High-side MOSFET drain input | Primary power input node; must connect ≥10 µF ceramic input capacitor directly to PGND. |
| SW (Pins 8–10, 48–51) | Switch node | Connects to internal high/low-side MOSFETs; routes high dv/dt edges-keep away from analog/sensitive traces. |
| VOUT (Pins 12–21, 27–30, 32–34, 40, 41) | Regulated output | Direct connection to integrated inductor; output capacitor must be placed adjacent to minimize loop inductance. |
| FB (Pin 36) | Feedback reference input | Senses 0.8V reference; uses external resistor divider to set output-ripple injection supported between FB and SW. |
| EN (Pin 38) | Enable control | TTL/CMOS-compatible logic input (1.8V high, 0.6V low); internal 1 MΩ pull-down prevents floating. |
| PG (Pin 37) | Power Good open-drain | Asserts when VFB reaches 88% of target; requires external ≥10 kΩ pull-up to valid rail. |
| ILIM (Pin 47) | Current limit programming | Resistor from ILIM to SW sets overcurrent threshold per Equation 4-3-supports foldback during hard shorts. |
| PGND (Pins 26,31,35,42,45 + ePAD) | Power ground return | Common return for input/output caps and internal low-side MOSFET source-must tie to system PGND plane. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® mode | Reduces quiescent current to 350 µA in discontinuous conduction-extends battery life in always-on subsystems. |
| Adaptive ON-time control | Eliminates external compensation components; maintains stable 600 kHz operation without loop tuning. |
| Pre-biased output start-up | Enables hot-swap and rail sequencing in multi-rail systems without output voltage reversal or overshoot. |
| Hiccup-mode short-circuit protection | Limits fault energy during sustained shorts-prevents MOSFET destruction and enables automatic recovery. |
| Integrated 1.0 µH inductor | Reduces BOM count by 4–6 passive components and eliminates inductor selection/validation effort. |
Applications
| FPGA Core Power Supply | DSP I/O Rail Regulation |
|---|---|
Use Scenario: Delivering 1.2V/4A to Xilinx Kintex-7 FPGA banks with tight transient response requirements. IC Role / Device Role / Timing Role: Primary point-of-load regulator providing dynamically adjusted core voltage with <100 µs load-step recovery. Use Value: Integrated inductor and HyperLight Load® reduce solution size by 35% and improve light-load efficiency by 12% vs discrete buck controllers. |
Use Scenario: Generating 3.3V/3A for TI C66x DSP I/O interfaces in radar signal processing modules. IC Role / Device Role / Timing Role: Secondary POL converter with enable-controlled power sequencing aligned to processor boot timeline. Use Value: 600 kHz fixed frequency simplifies EMI filter design; ±1% accuracy ensures JESD204B link stability across temperature. |
| Industrial PLC CPU Module | 5G Baseband Unit (BBU) |
Use Scenario: Supplying 0.85V/5A to ARM Cortex-A53 multicore SoC in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: High-reliability main processor rail with thermal shutdown and hiccup protection for unattended operation. Use Value: –40°C to +125°C rating and 22°C/W θJA allow fanless operation in sealed enclosures up to 70°C ambient. |
Use Scenario: Providing 1.8V/6A to Intel Agilex FPGA in remote radio head units requiring minimal board area. IC Role / Device Role / Timing Role: Compact, high-efficiency POL module supporting dynamic voltage scaling during beamforming cycles. Use Value: >93% peak efficiency reduces heat density in thermally constrained RF front-end assemblies. |
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-T1 | Uses Hyper Speed Control® instead of HyperLight Load®; higher quiescent current (1.03 mA vs. 0.35 mA) but faster transient response. | Better suited for high-dV/dt loads like RF transceivers; less optimal for battery-backed standby modes. | Select MIC45116-2YMP-T1 only when load-step recovery time <50 µs is required and light-load efficiency is secondary. |
| TPS546B24RVFR | 6A PMBus-enabled buck module with digital control, 4.5–18V input, and 0.5–3.3V output; no integrated inductor. | Supports telemetry and dynamic voltage scaling via PMBus; requires external inductor and compensation. | Choose TPS546B24RVFR when system-level monitoring, margining, or firmware-controlled voltage adjustment is needed. |
Compared with MIC45116-2YMP-T1, the MIC45116-1YMP-T1 prioritizes ultra-low quiescent current and light-load efficiency over transient speed; versus TPS546B24RVFR, it trades digital configurability for smaller footprint and zero-compensation design simplicity.
Availability
MIC45116-1YMP-T1 is available at Aetrix Electronics and suitable for FPGA core power supplies, DSP I/O regulation, industrial PLC CPU modules, and 5G baseband unit designs requiring stable component supply, long-term lifecycle assurance, and qualified automotive/industrial-grade reliability.
Supply support for MIC45116-1YMP-T1 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 emphasis on industrial, automotive, and communications markets.
The MIC45116 product line delivers fully integrated DC/DC regulator modules targeting high-power-density point-of-load conversion where board space, thermal constraints, and design cycle time are critical-especially for FPGA, ASIC, and DSP power delivery.
FAQ
What is the maximum input voltage rating for the MIC45116-1YMP-T1?
The MIC45116-1YMP-T1 has an absolute maximum PVIN rating of +30V, but its specified operating input voltage range is +4.75V to +20V. Operation beyond 20V may cause premature device failure or violate safety margins defined in the datasheet's Absolute Maximum Ratings table. Always maintain input voltage within the 4.75V–20V window for reliable long-term performance of the MIC45116-1YMP-T1.
Does the MIC45116-1YMP-T1 support adjustable output voltage?
Yes, the MIC45116-1YMP-T1 supports adjustable output voltage from 0.8V up to 85% of the input voltage using an external resistor divider on the FB pin. The internal 0.8V reference is trimmed to ±1% accuracy across temperature, and the feedback network design must follow Microchip's recommended ripple injection guidelines when using low-ESR output capacitors. This adjustability is fully implemented in the MIC45116-1YMP-T1.
How does the MIC45116-1YMP-T1 handle short-circuit conditions?
The MIC45116-1YMP-T1 uses hiccup-mode short-circuit protection triggered when the sensed voltage across the low-side MOSFET exceeds –14 mV (VCL). Upon detection, it disables switching, waits a recovery interval, then attempts soft-start restart. This limits average power dissipation and prevents thermal runaway. The MIC45116-1YMP-T1 also folds back the current limit during hard shorts to ensure indefinite survival without damage.
Can the MIC45116-1YMP-T1 start up safely into a pre-biased output?
Yes, the MIC45116-1YMP-T1 explicitly supports safe start-up into a pre-biased output-a key feature verified in Figure 2-43 of the datasheet. During enable assertion, it monitors VFB and delays high-side MOSFET turn-on until the output voltage falls below the programmed target, preventing reverse current flow and output voltage overshoot. This behavior is guaranteed for the MIC45116-1YMP-T1 across its full operating temperature range.
What is the thermal shutdown threshold for the MIC45116-1YMP-T1?
The MIC45116-1YMP-T1 activates thermal shutdown at a junction temperature of +160°C, with a hysteresis of +15°C-meaning it resumes operation only after cooling to +145°C. This threshold is measured at the die and protects against sustained overload or inadequate heatsinking. The device's θJA = 22°C/W (on eval board) allows accurate junction temperature estimation in customer layouts, ensuring robust thermal management for the MIC45116-1YMP-T1.
MIC45116-1YMP-T1 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-T1 FAQ
1.How can I place an order for MIC45116-1YMP-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC45116-1YMP-T1 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-T1 reliable?
The price and inventory of MIC45116-1YMP-T1 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-T1 is usually 5 days.
3.What payment methods are accepted for MIC45116-1YMP-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC45116-1YMP-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC45116-1YMP-T1?
MIC45116-1YMP-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC45116-1YMP-T1 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-T1?
For technical support, including MIC45116-1YMP-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC45116-1YMP-T1 requirements.
6.How does Aetrix verify that MIC45116-1YMP-T1 is sourced from the original manufacturer or authorized distributors?
All MIC45116-1YMP-T1 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-T1 meets industry standards.
7.What is the process for return or replacement of MIC45116-1YMP-T1?
All MIC45116-1YMP-T1 units undergo pre-shipment inspection (PSI). If there is an issue with MIC45116-1YMP-T1, 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-T1 part is unused and in its original packaging.
Return procedure for MIC45116-1YMP-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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