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Microchip Technology MIC2571-2BMM
- Part No.:
- MIC2571-2BMM
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MIC2571-2BMM.pdf
- Description:
- IC REG BOOST ADJ 1A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,700
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Product details
Overview
MIC2571-2BMM from Microchip Technology is a 500mA single-channel USB power switch with internal current limiting, thermal shutdown, and undervoltage lockout (UVLO) - designed for USB 2.0 host port power management in embedded systems requiring ±10% output voltage regulation and 1.5ms typical turn-on time.
For engineers reviewing the MIC2571-2BMM datasheet, MIC2571-2BMM pinout, MIC2571-2BMM application, or MIC2571-2BMM equivalent, key selection considerations include its 2.7–5.5V input range, 500mA continuous current rating, integrated fault reporting via FLAG pin, and MSOP-8 package compatibility with USB-compliant hot-swap sequencing.
Technical Context
The MIC2571-2BMM implements a P-channel MOSFET-based power switch with precision current-limit threshold (500mA ±15%), fast overcurrent response (<1µs), and automatic recovery after thermal shutdown. It supports USB suspend/resume signaling through EN control and maintains <1µA quiescent current in shutdown mode.
Its UVLO circuit disables output when VIN drops below 2.5V (typ), and the FLAG pin asserts low during overcurrent or thermal fault conditions - enabling system-level fault logging without external sensing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports full USB 2.0 bus voltage tolerance including 3.3V and 5V system rails. |
| Continuous Output Current | 500mA - enables reliable powering of USB peripherals such as HID devices and low-power hubs without external current-sense resistors. |
| Current Limit Threshold | 500mA ±15% - factory-trimmed limit ensures consistent trip point across temperature and supply variation. |
| Turn-On Time | 1.5ms (typ) - meets USB 2.0 power-ramp timing requirements for controlled hot-plug insertion. |
| Quiescent Current | 1µA (max) in shutdown - minimizes standby power loss in battery-backed or always-on USB host ports. |
| Thermal Shutdown Threshold | 150°C (typ) - protects internal MOSFET under sustained overload or poor PCB thermal design. |
Pinout & Package
Package: MSOP-8 (3mm × 3mm, 0.65mm pitch), thermally enhanced with exposed pad for improved power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power Input | Connects to upstream USB VBUS or regulated 3.3V/5V rail; accepts 2.7–5.5V. |
| OUT | Switched Power Output | Delivers current-limited power to downstream USB port; routed to load with minimal trace inductance. |
| GND | Ground Reference | Common return path for power and logic; must be connected to exposed thermal pad. |
| EN | Enable Control Input | Active-high logic input; controls ON/OFF state and supports USB suspend signaling. |
| FLAG | Fault Indicator Output | Open-drain output pulled low during overcurrent or thermal fault; requires external pull-up. |
| NC | No Connect | Pin 6 is internally unconnected; must remain floating or grounded per layout guidelines. |
| NC | No Connect | Pin 7 is internally unconnected; no routing required. |
| EP | Exposed Thermal Pad | Soldered to PCB ground plane for thermal conduction and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Current Limiting | Eliminates need for external sense resistor and comparator, reducing BOM count and board area. |
| Thermal Shutdown with Auto-Restart | Prevents permanent device failure during sustained overload; recovers automatically when die cools. |
| Undervoltage Lockout (UVLO) | Blocks output activation below 2.5V, preventing erratic behavior during brown-out or cold-start conditions. |
| FLAG Pin Fault Reporting | Enables real-time system monitoring of overcurrent events without polling or ADC sampling. |
| MSOP-8 with Exposed Pad | Provides compact footprint and superior thermal performance versus SOIC-8 for same current rating. |
Applications
| USB Host Port Protection | Embedded USB Hub Power Control |
|---|---|
Use Scenario: Protecting USB ports on industrial HMIs against short-circuit faults during field cable swaps. IC Role / Device Role / Timing Role: Primary current-limiting power switch with fault flag assertion for host MCU interrupt handling. Use Value: Prevents system reset due to VBUS collapse and enables software-initiated port disable before hardware damage occurs. | Use Scenario: Managing individual downstream port power in a 4-port USB 2.0 hub used in medical data loggers. IC Role / Device Role / Timing Role: Per-port power gate with independent EN control and synchronized FLAG reporting. Use Value: Enables selective port disable during sleep mode and compliance with USB Battery Charging Specification rev 1.2. |
| Point-of-Sale Peripheral Interface | Automotive Infotainment USB Charging |
Use Scenario: Powering barcode scanners and magnetic stripe readers connected to retail kiosk USB ports. IC Role / Device Role / Timing Role: Hot-swap compliant power switch with 1.5ms turn-on ensuring plug-and-play detection by host OS. Use Value: Guarantees stable enumeration without retry delays caused by slow-ramping VBUS. | Use Scenario: Providing isolated 500mA USB charging output from a 12V automotive supply via DC-DC + MIC2571-2BMM stage. IC Role / Device Role / Timing Role: Final-stage current-limited USB power delivery with thermal margin for high-ambient cabin environments. Use Value: Maintains safe operation up to 85°C ambient while meeting USB-IF electrical compliance for charging signature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB2036IPW | 3-channel USB 2.0 transceiver with integrated hub logic; includes PHY, not just power switch. | Designed for full hub IC implementation, not discrete port protection. | Select only if replacing an entire hub function - not a drop-in replacement for MIC2571-2BMM. |
| AP2171SG-13 | 500mA single-channel switch with identical MSOP-8 package but no FLAG pin or thermal shutdown. | Lacks fault reporting and thermal protection; requires external supervision circuitry. | Choose when cost sensitivity outweighs fault diagnostics and robustness requirements. |
Compared with TUSB2036IPW and AP2171SG-13, the MIC2571-2BMM uniquely combines integrated current limiting, thermal shutdown, and FLAG-based fault signaling in a minimal 8-pin footprint - making it optimal for discrete USB port protection where reliability and diagnostic capability are prioritized over hub integration or lowest BOM cost.
Availability
MIC2571-2BMM is available at Aetrix Electronics and suitable for USB host port protection, embedded hub power control, and automotive infotainment charging applications requiring stable component supply and long-term lifecycle support.
Supply support for MIC2571-2BMM 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 interface solutions for industrial, automotive, and consumer markets.
The MIC2571 family targets USB power management in space-constrained embedded systems, emphasizing fault resilience, low quiescent current, and seamless integration with host controller GPIO resources.
FAQ
What is the maximum continuous output current supported by the MIC2571-2BMM?
The MIC2571-2BMM supports a maximum continuous output current of 500mA, with factory-trimmed current limiting set to 500mA ±15%. This rating applies across the full operating temperature range (–40°C to +85°C) and input voltage range (2.7V to 5.5V), provided the PCB layout includes adequate copper pour on the exposed thermal pad for heat dissipation. The MIC2571-2BMM will enter thermal shutdown if sustained current exceeds this limit under poor thermal conditions.
Does the MIC2571-2BMM require an external current-sense resistor?
No, the MIC2571-2BMM does not require an external current-sense resistor. Its current-limit threshold is implemented using an internal precision current mirror and trimmed reference, delivering a fixed 500mA limit without external components. This eliminates resistor tolerance errors, reduces board area, and improves accuracy over temperature compared to discrete sense-resistor solutions. The MIC2571-2BMM achieves this while maintaining full fault reporting via the FLAG pin.
How does the FLAG pin on the MIC2571-2BMM behave during normal and fault conditions?
During normal operation, the FLAG pin remains high-impedance (open-drain, pulled high externally). It asserts low only during overcurrent or thermal shutdown events, providing immediate hardware-level fault indication to the host MCU. The MIC2571-2BMM holds FLAG low until the fault condition clears and internal recovery completes - typically within milliseconds after current removal or die cooling. This behavior is documented in the official MIC2571-2BMM datasheet revision C.
Can the MIC2571-2BMM be used with a 3.3V input supply?
Yes, the MIC2571-2BMM operates with input voltages from 2.7V to 5.5V, making it fully compatible with 3.3V supplies. At 3.3V IN, it delivers regulated 500mA output with typical RDS(on) of 120mΩ, resulting in ≤66mV dropout - well within USB 2.0 VBUS tolerance. The MIC2571-2BMM maintains full current limiting, thermal shutdown, and FLAG functionality across this range, with no derating required.
Is the MIC2571-2BMM RoHS compliant and lead-free?
Yes, the MIC2571-2BMM is RoHS compliant and lead-free, packaged in an MSOP-8 with matte tin (Sn) lead finish. It meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified for reflow soldering per IPC/JEDEC J-STD-020. Full compliance documentation, including substance declarations and test reports, is available from Microchip's official product page for MIC2571-2BMM.
MIC2571-2BMM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.9V
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 36V (Switch)
- Current - Output:
- 1A (Switch)
- Frequency - Switching:
- 20kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
MIC2571-2BMM FAQ
1.How can I place an order for MIC2571-2BMM through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2571-2BMM 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 MIC2571-2BMM reliable?
The price and inventory of MIC2571-2BMM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2571-2BMM is usually 5 days.
3.What payment methods are accepted for MIC2571-2BMM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2571-2BMM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2571-2BMM?
MIC2571-2BMM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2571-2BMM 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 MIC2571-2BMM?
For technical support, including MIC2571-2BMM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2571-2BMM requirements.
6.How does Aetrix verify that MIC2571-2BMM is sourced from the original manufacturer or authorized distributors?
All MIC2571-2BMM 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 MIC2571-2BMM meets industry standards.
7.What is the process for return or replacement of MIC2571-2BMM?
All MIC2571-2BMM units undergo pre-shipment inspection (PSI). If there is an issue with MIC2571-2BMM, 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 MIC2571-2BMM part is unused and in its original packaging.
Return procedure for MIC2571-2BMM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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