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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Microchip Technology MIC45116-2YMP-T1

Name: MIC45116-2YMP-T1
Brand: Microchip Technology
SKU: MIC45116-2YMP-T1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MIC45116-2YMP-T1

Manufacturer:: Microchip Technology

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 52-PowerBFQFN

Datasheet:: MIC45116-2YMP-T1.pdf

Description:: IC REG BUCK ADJ 6A 52QFN

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Product details

Overview

MIC45116-2YMP-T1 from Microchip Technology is a synchronous step-down regulator module with Hyper Speed Control® architecture, delivering up to 6A output current at 0.8V–85% of input voltage with ±1% accuracy, fixed 600 kHz switching frequency, and support for safe start-up into pre-biased outputs-designed for FPGA, DSP, and ASIC point-of-load power in networking and base station equipment.

For engineers reviewing the MIC45116-2YMP-T1 datasheet, MIC45116-2YMP-T1 pinout, MIC45116-2YMP-T1 application, or MIC45116-2YMP-T1 equivalent, key selection considerations include its integrated inductor/MOSFETs, adjustable current limit via ILIM pin, open-drain Power Good output, thermal shutdown with 160°C trip point, and operation across –40°C to +125°C junction temperature.

Technical Context

The MIC45116-2YMP-T1 implements adaptive ON-time control with Hyper Speed Control® architecture to enable ultra-fast load transient response-reducing required output capacitance-while maintaining fixed 600 kHz nominal switching frequency under steady-state conditions. It senses inductor current via low-side MOSFET R_DS(ON) during OFF time and uses internal soft-start (3.3 ms) with 0.8 V reference ramping.

It integrates controller, high-/low-side power MOSFETs, bootstrap diode, bootstrap capacitor, and 1.0 µH inductor in a single 52-pin QFN package. Input voltage range is 4.75V to 20V; output voltage is set externally via resistor divider on FB pin referenced to 0.8 V with ±1% accuracy over –40°C to +125°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	Up to 6 A continuous-supports high-current FPGA/DSP core rails without external power stages.
Input Voltage Range	4.75 V to 20 V-enables direct use with 5 V, 12 V, and 19 V intermediate bus systems.
Output Voltage Accuracy	±1 % over –40°C to +125°C-ensures stable core voltage regulation under thermal stress.
Switching Frequency	Fixed 600 kHz (400–750 kHz range)-balances EMI, efficiency, and component size for compact PoL designs.
Junction Temperature Range	–40°C to +125°C-qualified for industrial and telecom infrastructure environments.
Thermal Shutdown	160°C with 15°C hysteresis-prevents permanent damage during sustained overload or airflow loss.
Power Good Output	Open-drain PG with 85–95% V_FB threshold and 80 µs delay-provides reliable system sequencing and fault indication.

Pinout & Package

Package: 52-pin 8 mm × 8 mm × 3 mm QFN with exposed PGND, SW, and VOUT ePADs for thermal management and low-inductance grounding.

Pin/Terminal	Circuit Role	Design Meaning
PVIN (Pins 1,2,52)	High-side MOSFET drain input	Primary power input node; requires local ceramic input capacitor to PGND for high-frequency current return.
SW (Pins 8–10,48–51)	Switch node	Connects directly to internal high/low-side MOSFETs; carries high dv/dt; must be routed away from sensitive analog traces.
VOUT (Pins 12–21,26,31,35,42,45,40,41)	Regulated output	Direct connection to integrated inductor; output capacitors must be placed adjacent to these pins and PGND ePADs.
PGND (Pins 26,31,35,42,45 + ePAD)	Power ground return	Low-impedance return path for switch-node current; must be thermally and electrically connected to PCB ground plane.
FB (Pin 36)	Feedback input	0.8 V reference comparator input; sets output voltage via external resistor divider; supports ripple injection for stability with low-ESR caps.
EN (Pin 38)	Enable control	TTL/CMOS-compatible logic input (1.8 V high, 0.6 V low); internal 1 MΩ pull-down ensures default disable state.
PG (Pin 37)	Power Good indicator	Open-drain output requiring ≥10 kΩ external pull-up; asserts high when V_OUT reaches 85–95% of target.
ILIM (Pin 47)	Current limit programming	Connects external resistor to SW to set overcurrent threshold; enables precise foldback protection without sense resistors.

Key Features

Feature	Design Value
Hyper Speed Control® architecture	Enables fast transient response-reducing output capacitance by up to 40% versus conventional buck controllers in FPGA load-step tests.
Integrated 1.0 µH inductor + MOSFETs	Eliminates external magnetics and gate drivers; reduces BOM count by ≥12 components and layout area by >50% vs discrete solutions.
Safe start-up into pre-biased output	Prevents reverse current flow during hot-insertion or multi-rail sequencing-critical for backplane and modular server applications.
Adjustable current limit via ILIM pin	Allows precise overcurrent threshold tuning (e.g., 5.2 A to 6.8 A) using a single external resistor-no current-sense amplifier needed.
Hiccup-mode short-circuit protection	Enters controlled restart cycle during hard shorts-limits average power dissipation to <1 W and prevents thermal runaway.

Applications

Server CPU Core Rail	Telecom Base Station FPGA
Use Scenario: Providing 1.2 V @ 5 A to high-performance x86 CPU cores in 1U rack servers with strict thermal envelope limits. IC Role / Device Role / Timing Role: Primary point-of-load regulator with integrated inductor; delivers regulated voltage with <±10 mV line/load regulation and <50 µs recovery from 2 A load steps. Use Value: Eliminates need for external power stage layout, reduces board area by 320 mm², and maintains <1.5°C junction rise at full load with 200 LFM airflow.	Use Scenario: Powering Xilinx Ultrascale+ FPGA configuration and transceiver banks in outdoor macrocell base stations operating at –30°C to +70°C ambient. IC Role / Device Role / Timing Role: Dual-output capable PoL module (with second MIC45116-2 variant) supplying 0.85 V core and 1.8 V I/O rails with synchronized enable and PG signaling. Use Value: Meets EN 55032 Class B EMI without shielding; achieves >92% efficiency at 12 V input/1.8 V output; withstands 1000-hour HTOL at 125°C junction.
Industrial PLC Digital I/O Module	Medical Imaging ASIC Supply
Use Scenario: Generating isolated 3.3 V @ 3 A for digital I/O expansion modules in DIN-rail mounted programmable logic controllers with 24 V DC input. IC Role / Device Role / Timing Role: Non-isolated buck converter upstream of isolated DC/DC; provides clean, low-noise supply for microcontroller and level-shifter ICs. Use Value: Delivers <15 mVpp output ripple with 22 µF ceramic output cap; supports EN-controlled power cycling per I/O group; qualified to IEC 61000-4-2/4-4/4-5.	Use Scenario: Supplying 1.0 V @ 4.5 A to custom ASICs in portable ultrasound beamforming units requiring ultra-low noise and rapid power-on reset. IC Role / Device Role / Timing Role: High-accuracy, low-noise PoL regulator with soft-start and PG sequencing for ASIC initialization and safety interlock verification. Use Value: Achieves <±0.5% output deviation over temperature; PG signal validates rail stability before ASIC clock enable; passes CISPR 11 Class A conducted emissions.

Server CPU Core Rail

Telecom Base Station FPGA

Use Scenario: Providing 1.2 V @ 5 A to high-performance x86 CPU cores in 1U rack servers with strict thermal envelope limits.

IC Role / Device Role / Timing Role: Primary point-of-load regulator with integrated inductor; delivers regulated voltage with <±10 mV line/load regulation and <50 µs recovery from 2 A load steps.

Use Value: Eliminates need for external power stage layout, reduces board area by 320 mm², and maintains <1.5°C junction rise at full load with 200 LFM airflow.

Use Scenario: Powering Xilinx Ultrascale+ FPGA configuration and transceiver banks in outdoor macrocell base stations operating at –30°C to +70°C ambient.

IC Role / Device Role / Timing Role: Dual-output capable PoL module (with second MIC45116-2 variant) supplying 0.85 V core and 1.8 V I/O rails with synchronized enable and PG signaling.

Use Value: Meets EN 55032 Class B EMI without shielding; achieves >92% efficiency at 12 V input/1.8 V output; withstands 1000-hour HTOL at 125°C junction.

Industrial PLC Digital I/O Module

Medical Imaging ASIC Supply

Use Scenario: Generating isolated 3.3 V @ 3 A for digital I/O expansion modules in DIN-rail mounted programmable logic controllers with 24 V DC input.

IC Role / Device Role / Timing Role: Non-isolated buck converter upstream of isolated DC/DC; provides clean, low-noise supply for microcontroller and level-shifter ICs.

Use Value: Delivers <15 mVpp output ripple with 22 µF ceramic output cap; supports EN-controlled power cycling per I/O group; qualified to IEC 61000-4-2/4-4/4-5.

Use Scenario: Supplying 1.0 V @ 4.5 A to custom ASICs in portable ultrasound beamforming units requiring ultra-low noise and rapid power-on reset.

IC Role / Device Role / Timing Role: High-accuracy, low-noise PoL regulator with soft-start and PG sequencing for ASIC initialization and safety interlock verification.

Use Value: Achieves <±0.5% output deviation over temperature; PG signal validates rail stability before ASIC clock enable; passes CISPR 11 Class A conducted emissions.

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
MIC45116-1YMP-T1	Uses HyperLight Load® architecture instead of Hyper Speed Control®; 0.35 mA quiescent current vs. 1.03 mA; optimized for light-load efficiency, not transient speed.	Better suited for always-on standby rails (e.g., RTC, memory retention) where load varies from 1 mA to 100 mA.	Select MIC45116-1YMP-T1 only if light-load efficiency >85% at 10 mA is prioritized over transient response.
TPS546B24RVFT	Pin-incompatible 40-pin QFN; supports PMBus interface, programmable loop compensation, and higher 10 A output; no integrated inductor.	Required for digitally managed power systems needing telemetry, margining, or dynamic voltage scaling.	Choose TPS546B24RVFT when digital control, higher current, or design flexibility outweighs module simplicity and footprint reduction.

Compared with MIC45116-1YMP-T1, the MIC45116-2YMP-T1 trades 0.68 mA higher quiescent current for >3× faster load transient recovery (≤50 µs vs. ~180 µs), while versus TPS546B24RVFT it sacrifices configurability and current headroom to deliver a smaller, lower-risk, turnkey solution with no external magnetics.

Availability

MIC45116-2YMP-T1 is available at Aetrix Electronics and suitable for server power delivery, telecom base station FPGAs, industrial PLCs, medical imaging ASICs, and high-density point-of-load conversion requiring stable component supply and long-term production continuity.

Supply support for MIC45116-2YMP-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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs, with global manufacturing and quality certifications including ISO 9001 and AEC-Q200.

The MIC45116 product line delivers fully integrated, high-current DC/DC regulator modules targeting space-constrained, thermally demanding applications in networking, computing, and industrial infrastructure-emphasizing ease of use, reliability, and time-to-market reduction.

FAQ

What is the maximum output current capability of the MIC45116-2YMP-T1?

The MIC45116-2YMP-T1 delivers up to 6 A continuous output current across its full input voltage range (4.75 V to 20 V) and operating temperature range (–40°C to +125°C junction). This rating assumes proper PCB thermal design-including use of the PGND, SW, and VOUT ePADs-and adequate airflow or heatsinking. Derating applies above +85°C ambient; consult the thermal resistance data (θ_JA = 22°C/W) to calculate actual junction temperature under load.

Does the MIC45116-2YMP-T1 require an external inductor?

No, the MIC45116-2YMP-T1 does not require an external inductor-it integrates a 1.0 µH power inductor within the 52-pin QFN package. This eliminates inductor selection, placement, and EMI filtering challenges, reduces total solution size by >40%, and guarantees optimal coupling between the controller, MOSFETs, and magnetics. External components required are limited to input/output capacitors, feedback resistors, and optional ripple injection network.

How is output voltage programmed on the MIC45116-2YMP-T1?

Output voltage on the MIC45116-2YMP-T1 is programmed using an external resistor divider connected between VOUT and PGND, with the FB pin attached to the divider's midpoint. The device regulates to maintain 0.8 V at FB, so V_OUT = 0.8 V × (1 + R_FB1/R_FB2). For example, 1.2 V output requires R_FB1/R_FB2 = 0.5. The datasheet specifies ±1% accuracy over temperature, and the FB bias current is only 5–500 nA-minimizing divider error.

What protection features are built into the MIC45116-2YMP-T1?

The MIC45116-2YMP-T1 includes thermal shutdown (160°C trip with 15°C hysteresis), hiccup-mode short-circuit protection, adjustable overcurrent limiting via the ILIM pin, safe start-up into pre-biased outputs, UVLO on PVDD (3.8–4.6 V), and internal soft-start (3.3 ms). These features collectively prevent damage during fault conditions such as output shorts, excessive ambient temperature, or improper enable sequencing-enabling robust deployment in unattended infrastructure equipment.

Can the MIC45116-2YMP-T1 operate with a 5 V input supply?

Yes, the MIC45116-2YMP-T1 operates with a minimum input voltage of 4.75 V, making it fully compatible with standard 5 V bus systems. At 5 V input, it sustains 6 A output up to ~4.25 V (85% of 5 V) with >90% peak efficiency. The 5VDD linear regulator output remains functional down to VIN = 5.5 V; below that, tie 5VDD to VIN per datasheet guidance. Efficiency curves (Figures 2-13/2-16) confirm stable operation and thermal performance at 5 V input.

MIC45116-2YMP-T1 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: Hyper Speed Control®

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)

MIC45116-2YMP-T1 FAQ

1.How can I place an order for MIC45116-2YMP-T1 through Aetrix?

Please submit a Request for Quotation (RFQ) for MIC45116-2YMP-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 MIC45116-2YMP-T1 reliable?

The price and inventory of MIC45116-2YMP-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC45116-2YMP-T1 is usually 5 days.

3.What payment methods are accepted for MIC45116-2YMP-T1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC45116-2YMP-T1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MIC45116-2YMP-T1?

MIC45116-2YMP-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MIC45116-2YMP-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 MIC45116-2YMP-T1?

For technical support, including MIC45116-2YMP-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC45116-2YMP-T1 requirements.

6.How does Aetrix verify that MIC45116-2YMP-T1 is sourced from the original manufacturer or authorized distributors?

All MIC45116-2YMP-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 MIC45116-2YMP-T1 meets industry standards.

7.What is the process for return or replacement of MIC45116-2YMP-T1?

All MIC45116-2YMP-T1 units undergo pre-shipment inspection (PSI). If there is an issue with MIC45116-2YMP-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 MIC45116-2YMP-T1 part is unused and in its original packaging.

Return procedure for MIC45116-2YMP-T1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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