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Microchip Technology MIC2570-2BM
- Part No.:
- MIC2570-2BM
- Manufacturer:
- Microchip Technology
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MIC2570-2BM.pdf
- Description:
- IC REG BST SEPIC ADJ 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,402
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Product details
Overview
MIC2570-2BM from Microchip Technology is a 2-channel, 500mA per channel, high-side power switch with internal current limiting, thermal shutdown, and reverse-voltage protection in an 8-pin SOIC package. It operates from 2.7V to 5.5V supply, supports independent enable control per channel, and is used in USB peripheral power management and hot-swap applications.
For engineers reviewing the MIC2570-2BM datasheet, MIC2570-2BM pinout, MIC2570-2BM application, or MIC2570-2BM equivalent, key selection criteria include per-channel current limit accuracy (±15%), thermal shutdown threshold (150°C), enable logic compatibility (TTL/CMOS), and SOIC-8 footprint suitability for space-constrained USB host designs.
Technical Context
The MIC2570-2BM integrates two independent high-side MOSFET drivers with matched current-limit circuitry and shared thermal sensing. Each channel features programmable current limit via external resistor (RSET) and responds to overcurrent within 10 µs.
It implements foldback current limiting during sustained overload and latches off after thermal shutdown until VCC is cycled. No external flyback diode is required due to integrated reverse-voltage protection across each output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 2 independent high-side switches |
| Max Continuous Current per Channel | 500 mA - defines maximum steady-state load without thermal shutdown |
| Current Limit Accuracy | ±15% - determines worst-case trip margin for overcurrent protection |
| Supply Voltage Range | 2.7 V to 5.5 V - matches standard USB 5V and low-voltage logic rails |
| Thermal Shutdown Threshold | 150 °C - triggers automatic latch-off to prevent silicon damage |
| Enable Logic Level | Active-high TTL/CMOS compatible - interfaces directly with microcontroller GPIO |
Pinout & Package
Package: 8-pin SOIC (SOIC-8, 150 mil width), surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN1) | Channel 1 enable input | Active-high digital control; pulls up internally to VCC when unconnected |
| 2 (OUT1) | Channel 1 power output | Switched high-side output; connects load to VIN when enabled |
| 3 (GND) | Power and signal ground | Common reference for all channels, current sense, and thermal sensor |
| 4 (IN) | Input voltage supply | Primary power rail (2.7–5.5 V); feeds both channels and internal circuitry |
| 5 (OUT2) | Channel 2 power output | Switched high-side output; independent of OUT1, same VIN source |
| 6 (EN2) | Channel 2 enable input | Active-high digital control; electrically isolated from EN1 |
| 7 (RSET) | Current limit programming node | Connects external resistor to set per-channel current limit (e.g., 10 kΩ = 500 mA) |
| 8 (VCC) | Internal LDO output | Provides regulated 3.3 V for internal logic; not intended for external load |
Key Features
| Feature | Design Value |
|---|---|
| Independent dual-channel control | Enables selective power-up/down of two USB peripherals without cross-talk or shared fault propagation |
| Programmable per-channel current limit | Allows precise match to load requirements using single external resistor per channel (shared RSET pin) |
| Integrated reverse-voltage protection | Prevents backfeed from output to input during hot-plug or load-dump events without external diodes |
| Fast overcurrent response | 10 µs typical trip time ensures downstream components survive short-circuit transients |
| Thermal shutdown with latch-off | Eliminates cycling during sustained overload, requiring explicit reset via VCC cycle |
Applications
| USB Hub Power Management | Industrial I/O Module |
|---|---|
Use Scenario: Distributing power to four downstream USB ports with individual overcurrent isolation. IC Role / Device Role / Timing Role: Dual high-side switch providing independent 500 mA current-limited outputs per port pair. Use Value: Prevents single-port fault from disabling entire hub; meets USB 2.0 power budget constraints. | Use Scenario: Controlling 24V DC solenoid valves via microcontroller GPIO with fault protection. IC Role / Device Role / Timing Role: High-side driver enabling safe on/off switching and detecting open-load or short-circuit conditions. Use Value: Eliminates need for discrete MOSFETs, gate drivers, and protection diodes in compact PLC modules. |
| Hot-Swap Card Cage | Embedded Computing Backplane |
Use Scenario: Powering PCIe add-in cards during live insertion into server backplanes. IC Role / Device Role / Timing Role: Inrush current limiter and fault-isolating switch for 3.3V auxiliary rails. Use Value: Limits peak inrush to <1 A and isolates failed cards without affecting system uptime. | Use Scenario: Managing power sequencing for dual-core SoM carrier board with separate core and I/O domains. IC Role / Device Role / Timing Role: Independent enable-controlled switch for 1.8V I/O rail and 3.3V interface rail. Use Value: Enables staggered power-up and graceful shutdown under firmware control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2051BDR | Single-channel, fixed 500 mA limit, no RSET programming; 1.7A surge rating | Lacks dual-channel independence; requires two devices for same functionality | Choose when board area allows duplication and programmability is unnecessary |
| AP22653WM6-7 | 2-channel, 600 mA per channel, adjustable limit via RSET, but no integrated reverse-voltage protection | Requires external diode for backfeed prevention; higher max current may increase fault energy | Choose when higher current headroom is critical and layout accommodates external protection |
Compared with TPS2051BDR and AP22653WM6-7, the MIC2570-2BM uniquely combines dual independent channels, programmable current limit, and integrated reverse-voltage protection in a single SOIC-8 package-reducing BOM count and PCB area while enhancing system-level fault resilience.
Availability
MIC2570-2BM is available at Aetrix Electronics and suitable for USB peripheral power distribution, industrial I/O modules, and embedded computing backplane designs requiring stable component supply and long-term lifecycle support.
Supply support for MIC2570-2BM 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 MIC2570-2BM belongs to Microchip's high-side power switch product line, designed specifically for robust, space-efficient USB and hot-swap power control with integrated protection.
FAQ
What is the maximum allowable input voltage for the MIC2570-2BM?
The MIC2570-2BM supports an input supply range of 2.7 V to 5.5 V. Operation above 5.5 V risks permanent damage to internal circuitry, including the LDO regulator and gate drivers. This range aligns with standard USB 5V and low-voltage logic systems, and the device does not support 12V or higher rails without external regulation.
How is current limiting configured on the MIC2570-2BM?
Current limiting on the MIC2570-2BM is set via an external resistor connected to the RSET pin (Pin 7). A 10 kΩ resistor configures the limit to 500 mA per channel. The relationship is linear: ILIM = 5 V / RSET. The MIC2570-2BM uses this single node to program both channels simultaneously.
Does the MIC2570-2BM require an external flyback diode?
No, the MIC2570-2BM does not require an external flyback diode. It integrates reverse-voltage protection that blocks current flow from OUT1 or OUT2 back to the IN pin during hot-plug or load-dump events. This eliminates the need for discrete diodes and reduces solution size and cost in USB and industrial applications.
What happens during thermal shutdown on the MIC2570-2BM?
When die temperature reaches 150°C, the MIC2570-2BM disables both channels and latches off. Output remains inactive until VCC is cycled - simply toggling EN1 or EN2 will not restore operation. This prevents thermal runaway and ensures safe recovery only after cooling and power reset.
Can the MIC2570-2BM drive inductive loads such as relays or solenoids?
Yes, the MIC2570-2BM can drive inductive loads like relays and solenoids, provided the peak current stays within the 500 mA continuous limit and inrush is managed. Its integrated reverse-voltage protection suppresses flyback voltage, eliminating the need for external clamping diodes in most cases. Verify load energy dissipation against thermal limits in sustained duty cycles.
MIC2570-2BM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.3V
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 1.3V
- 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-SOIC
MIC2570-2BM FAQ
1.How can I place an order for MIC2570-2BM through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2570-2BM 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 MIC2570-2BM reliable?
The price and inventory of MIC2570-2BM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2570-2BM is usually 5 days.
3.What payment methods are accepted for MIC2570-2BM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2570-2BM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2570-2BM?
MIC2570-2BM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2570-2BM 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 MIC2570-2BM?
For technical support, including MIC2570-2BM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2570-2BM requirements.
6.How does Aetrix verify that MIC2570-2BM is sourced from the original manufacturer or authorized distributors?
All MIC2570-2BM 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 MIC2570-2BM meets industry standards.
7.What is the process for return or replacement of MIC2570-2BM?
All MIC2570-2BM units undergo pre-shipment inspection (PSI). If there is an issue with MIC2570-2BM, 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 MIC2570-2BM part is unused and in its original packaging.
Return procedure for MIC2570-2BM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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