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MIC2549A-2YTS-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)
- Grade：-
- Qualification：-
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Overview
The MIC2549A-2YTS-TR is a high-side power switch IC from Microchip Technology, designed for USB power distribution applications. It features a single N-channel output capable of handling up to 3A with an on-state resistance of 35mΩ. The device operates within a supply voltage range of 2.7V to 5.5V and includes programmable current limiting and over-temperature protection with latch functionality. Packaged in a 14-TSSOP format, it supports active-high logic control and provides a status flag for system monitoring.
Feature Summary
- Programmable current limit with over-temperature latch protection
- Slew rate controlled output for reduced EMI
- Integrated status flag for fault indication
Applications
- USB power distribution hubs
- Peripheral power switching
- Over-current protection circuits
Procurement Notes
Verify the specific suffix '2YTS' corresponds to the 14-TSSOP tape and reel packaging configuration. Confirm that the 'A' variant meets your thermal and electrical requirements compared to non-A versions. Ensure compatibility with your PCB footprint for the TSSOP-14 package. Cross-reference the manufacturer datasheet for exact pinout and recommended operating conditions before finalizing procurement.
Selection Notes
Select this component when a single high-side switch with precise current limiting and thermal shutdown is required. It is suitable for applications needing slew rate control to minimize electromagnetic interference during switching events. The integrated status flag simplifies fault detection logic. Consider the 3A continuous current capability and low on-resistance for efficient power delivery in compact designs.
Part Context
This part belongs to the MIC2549A family of USB power switches. It shares functional similarities with other high-side switches but offers specific programmability and protection features tailored for modern USB peripherals. The device integrates control logic and power MOSFETs into a single compact package, reducing board space and component count compared to discrete solutions.
Replacement Considerations
Check for direct substitutes like the MIC2546 series if dual channels are needed, though pinouts may differ. Verify equivalent current ratings and package dimensions for any cross-references. Ensure replacement parts support the same 2.7V to 5.5V operating range and offer comparable thermal protection mechanisms.
