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MIC2545A-2BTS-TR
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Product Detailed Parameters
- Description：IC PWR SWITCH N-CHAN 1:1 14TSSOP
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Switch Type：USB Switch
- Number of Outputs：1
- Ratio - Input:Output：1:01
- Output Configuration：High Side
- Output Type：N-Channel
- Interface：On/Off
- Voltage - Load：2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd)：Not Required
- Current - Output (Max)：3A
- Rds On (Typ)：35mOhm
- Input Type：Non-Inverting
- Features：Slew Rate Controlled, Status Flag
- Fault Protection：Current Limiting (Adjustable), Over Temperature, Reverse Current
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：14-TSSOP
- Package / Case：14-TSSOP (0.173", 4.40mm Width)
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Overview
The MIC2545A-2BTS-TR is a single-channel, high-side power switch IC manufactured by Microchip Technology. It features an N-channel MOSFET with a maximum on-resistance of 50 mΩ and supports load voltages from 2.7 V to 5.5 V. The device provides programmable current limiting ranging from 0.5 A to 3 A, controlled via external resistors. Key protection mechanisms include adjustable current limit, thermal shutdown, and reverse current blocking. It operates within a temperature range of -40°C to +85°C and is housed in a 14-pin TSSOP package.
Feature Summary
- Programmable current limiting allows customization of fault protection thresholds using external resistors.
- Integrated thermal shutdown protects the device and load from overheating conditions.
- Reverse current blocking prevents backflow when the output voltage exceeds the input voltage.
- Controlled slew rate minimizes inrush current during turn-on to protect sensitive loads.
Applications
- USB port power distribution and overcurrent protection
- Peripheral card hot-swap applications
- Battery-powered equipment power management
- Industrial control system load switching
Procurement Notes
Verify that the suffix 'BTS' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm the specific current limit resistor values align with the datasheet calculations for the target application. Ensure the 14-TSSOP footprint matches the PCB design constraints. Check RoHS compliance status as indicated in official documentation.
Selection Notes
Select this component when a single high-side switch with adjustable current limits is required for 5V systems. Choose based on the need for integrated thermal and reverse current protection without external components. Consider the 50 mΩ on-resistance for efficiency requirements. Verify that the 2.7 V to 5.5 V operating range suits the system voltage profile.
Part Context
This part belongs to the MIC2545A family of USB power switches designed for high-side switching applications. It is functionally similar to the MIC2549A but offers different pin configurations or feature sets. The 'TR' suffix indicates it is supplied in a reel for surface-mount technology manufacturing.
Replacement Considerations
Direct substitutes include the MIC2545A-1YTS and MIC2545A-2YM. Verify pin compatibility and electrical specifications before substitution. Note that some variants may have different packaging or RoHS statuses.
