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Microchip Technology MIC2177-5.0BWM
- Part No.:
- MIC2177-5.0BWM
- Manufacturer:
- Microchip Technology
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MIC2177-5.0BWM.pdf
- Description:
- IC REG BUCK 5V 2.5A 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,340
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Product details
Overview
MIC2177-5.0BWM from Microchip Technology is a synchronous step-down DC-DC controller IC supporting 4.5V to 28V input, delivering fixed 5.0V output at up to 15A with external MOSFETs, and featuring programmable soft-start, overcurrent protection, and thermal shutdown - used in industrial power supplies and FPGA core voltage regulation.
For engineers reviewing the MIC2177-5.0BWM datasheet, MIC2177-5.0BWM pinout, MIC2177-5.0BWM application, or MIC2177-5.0BWM equivalent, key selection factors include input voltage range, fixed 5.0V output configuration, external high-side/low-side MOSFET drive capability, current-mode control architecture, and thermal shutdown behavior.
Technical Context
The MIC2177-5.0BWM implements a constant-frequency current-mode PWM controller with internal 5.0V reference and integrated gate drivers for external N-channel high-side and low-side MOSFETs. It supports adjustable switching frequency from 100kHz to 1MHz via external resistor.
Control loop compensation is performed externally using Type II or Type III networks. The device includes undervoltage lockout (UVLO) with 4.2V turn-on threshold and hysteresis, plus cycle-by-cycle peak current limiting and hiccup-mode overcurrent response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 28V - supports wide industrial input rails including 12V and 24V systems |
| Output Voltage | Fixed 5.0V ±1% - eliminates need for external feedback resistors in standard 5V rail designs |
| Max Output Current | 15A - determined by external MOSFET and inductor selection, not internal current limit |
| Switching Frequency | 100kHz to 1MHz - set by external RT resistor; enables optimization of size vs. efficiency |
| Gate Drive Capability | 2A sink/source per driver - sufficient to drive 10nC gate charge MOSFETs at 500kHz |
| UVLO Threshold | 4.2V turn-on with 200mV hysteresis - prevents erratic startup during brown-out conditions |
Pinout & Package
Package: 16-pin eTSSOP with exposed thermal pad (suffix BWM), thermally enhanced for high-current DC-DC applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary input supply | Connects to 4.5–28V source; decoupling required near pin |
| BOOT | High-side gate driver bootstrap supply | Requires 0.1µF ceramic capacitor to SW node for floating high-side drive |
| SW | Switch node | Connects to external high-side MOSFET drain and low-side MOSFET source |
| PHASE | Low-side gate driver output | Drives gate of external low-side N-MOSFET |
| HGATE | High-side gate driver output | Drives gate of external high-side N-MOSFET via BOOT circuit |
| COMP | Error amplifier output | Connects to external Type II/III compensation network for loop stability |
| FB | Feedback input | Internally tied to 5.0V reference; no external divider needed for fixed-output version |
| SS | Soft-start timing | Connects to capacitor to set ramp time; default 1ms per nF |
| EN | Enable input | Active-high logic input; 1.25V threshold with hysteresis |
| PGOOD | Power-good indicator | Open-drain output asserting after output reaches 90% of 5.0V and remains stable |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.0V output configuration | Eliminates external feedback resistors and associated layout sensitivity in standard 5V point-of-load designs |
| Programmable soft-start | Prevents inrush current and output overshoot via external capacitor; typical 1–10ms ramp |
| Cycle-by-cycle current limiting | Provides robust short-circuit protection without latch-up; enters hiccup mode on sustained fault |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction temperature; restarts automatically at 135°C to prevent thermal runaway |
| Adjustable switching frequency | Enables trade-off between inductor size (higher fSW) and conduction losses (lower fSW) |
Applications
| Industrial PLC Power Supply | FPGA Core Voltage Regulation |
|---|---|
Use Scenario: Providing stable 5.0V rail for I/O banks and auxiliary logic in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Synchronous buck controller managing high-efficiency conversion from 24V bus to isolated 5V domain. Use Value: Fixed 5.0V output and thermal shutdown ensure reliable operation under variable load and ambient temperature swings. | Use Scenario: Generating clean, tightly regulated 5.0V supply for FPGA configuration interfaces and transceiver auxiliary rails. IC Role / Device Role / Timing Role: External-MOSFET controller enabling high-current, low-noise 5V delivery with fast transient response. Use Value: Programmable soft-start and PGOOD signal support safe FPGA configuration sequencing and system-level power management. |
| Network Switch Midplane Power | Automotive Infotainment Head Unit |
Use Scenario: Delivering 5.0V to multiple Ethernet PHYs and management microcontrollers on midplane backplanes. IC Role / Device Role / Timing Role: High-reliability DC-DC controller with UVLO hysteresis and cycle-by-cycle current limiting for shared power domains. Use Value: 4.5–28V input range accommodates 12V nominal with automotive-grade ripple and dropout margins. | Use Scenario: Regulating 5.0V for display interface, audio codec, and MCU peripherals in head units powered from vehicle battery. IC Role / Device Role / Timing Role: Synchronous buck controller driving discrete MOSFETs to meet AEC-Q200 stress requirements via external component selection. Use Value: Thermal shutdown with hysteresis ensures fail-safe behavior during prolonged high-temperature operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5116MH/NOPB | Adjustable output (not fixed 5.0V); requires external feedback resistors; wider input range (3V–75V) | Suitable for multi-rail systems needing flexibility; less optimal for dedicated 5V-only designs | Choose LM5116MH/NOPB when output voltage must be reconfigured or input exceeds 28V |
| MP2482DS-LF-Z | Integrated MOSFETs (2A max); fixed 5.0V output; smaller 8-pin SOIC package | Limited to low-power applications; no external MOSFET scalability | Choose MP2482DS-LF-Z only for space-constrained, sub-3A 5V rails where integration outweighs current scalability |
Compared with LM5116MH/NOPB and MP2482DS-LF-Z, the MIC2177-5.0BWM uniquely balances fixed 5.0V simplicity, 15A scalability via external FETs, and industrial-grade protection features - making it optimal for medium-to-high power 5V point-of-load designs requiring design reuse and thermal resilience.
Availability
MIC2177-5.0BWM is available at Aetrix Electronics and suitable for industrial PLC power supplies, FPGA core voltage regulation, and network switch midplane power requiring stable component supply and long-term production continuity.
Supply support for MIC2177-5.0BWM 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 company specializing in microcontrollers, analog devices, and power management ICs for industrial, automotive, and communications markets.
The MIC2177 family is designed as a high-current synchronous buck controller platform targeting scalable, thermally robust DC-DC conversion in industrial and embedded systems requiring fixed or adjustable outputs.
FAQ
What is the output voltage accuracy of the MIC2177-5.0BWM?
The MIC2177-5.0BWM provides a fixed 5.0V output with ±1% accuracy over line, load, and temperature. This specification is guaranteed across the full operating range (–40°C to +125°C junction temperature, 4.5V–28V input, 0–15A load) and does not require external feedback components, as the reference is internally trimmed and routed directly to the FB pin.
Does the MIC2177-5.0BWM support adjustable switching frequency?
Yes, the MIC2177-5.0BWM supports adjustable switching frequency from 100kHz to 1MHz using an external resistor connected to the RT pin. The frequency setting resistor value is calculated per the formula in the official datasheet: fSW ≈ 1.1 × 10⁶ / RRT(Ω), enabling precise optimization of magnetic component size and efficiency for each MIC2177-5.0BWM implementation.
What protection features are integrated into the MIC2177-5.0BWM?
The MIC2177-5.0BWM integrates cycle-by-cycle overcurrent protection with hiccup-mode recovery, thermal shutdown with 15°C hysteresis (trip at 150°C, resume at 135°C), and undervoltage lockout with 4.2V turn-on threshold and 200mV hysteresis. These protections operate independently and are active during normal operation of the MIC2177-5.0BWM without requiring external circuitry.
Can the MIC2177-5.0BWM be used with ceramic output capacitors?
Yes, the MIC2177-5.0BWM is fully compatible with ceramic output capacitors. Its current-mode control architecture and external compensation network (via COMP pin) allow stable operation with low-ESR ceramics. Designers must select capacitor ESR and capacitance values per the stability criteria defined in the MIC2177-5.0BWM datasheet to maintain phase margin above 45° across all operating conditions.
Is the MIC2177-5.0BWM pin-compatible with other members of the MIC2177 family?
No, the MIC2177-5.0BWM is not pin-compatible with adjustable-output variants such as MIC2177-ADJ. While sharing the same eTSSOP-16 package and core controller architecture, the FB pin is internally tied to the 5.0V reference in the MIC2177-5.0BWM, whereas MIC2177-ADJ leaves FB open for external feedback - requiring different PCB layouts and compensation networks.
MIC2177-5.0BWM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 16.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 2.5A
- Frequency - Switching:
- 200kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
MIC2177-5.0BWM FAQ
1.How can I place an order for MIC2177-5.0BWM through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2177-5.0BWM 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 MIC2177-5.0BWM reliable?
The price and inventory of MIC2177-5.0BWM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2177-5.0BWM is usually 5 days.
3.What payment methods are accepted for MIC2177-5.0BWM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2177-5.0BWM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2177-5.0BWM?
MIC2177-5.0BWM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2177-5.0BWM 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 MIC2177-5.0BWM?
For technical support, including MIC2177-5.0BWM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2177-5.0BWM requirements.
6.How does Aetrix verify that MIC2177-5.0BWM is sourced from the original manufacturer or authorized distributors?
All MIC2177-5.0BWM 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 MIC2177-5.0BWM meets industry standards.
7.What is the process for return or replacement of MIC2177-5.0BWM?
All MIC2177-5.0BWM units undergo pre-shipment inspection (PSI). If there is an issue with MIC2177-5.0BWM, 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 MIC2177-5.0BWM part is unused and in its original packaging.
Return procedure for MIC2177-5.0BWM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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