MIC2090-2YM5 Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
Microchip MIC2090-2YM5 is a single-channel current-limiting power distribution switch and load switch IC in a SOT-23-5 package, providing integrated overcurrent protection for USB and system power rails. It features a fixed current limit threshold and enables safe power sequencing with short-circuit protection. Stocked globally for portable electronics, USB power management, and single-board computer power distribution designs.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- MIC2090-2YM5 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single-channel load switch with integrated fixed current-limit threshold for automatic overcurrent protection
- SOT-23-5 compact package occupying minimal PCB area for space-constrained portable and handheld device designs
- Active-high enable input allowing microcontroller-controlled power sequencing and hot-swap switching
- Protects downstream circuits from short-circuit and inrush current events on 5 V USB and system power rails
Applications
The MIC2090-2YM5 is used as a USB port power switch and current-limiting load switch in portable devices, single-board computers, and embedded systems to protect downstream circuits from overcurrent and short-circuit faults. It enables controlled power sequencing of peripheral subsystems such as USB hubs, SD card slots, and sensor modules, disconnecting the load automatically when current exceeds the fixed threshold. The SOT-23-5 package allows it to be placed close to the power rail on compact PCBs in tablets, IoT gateways, and industrial handheld equipment.
Specifications
| Reach Compliance Code | Unknown |
| YTEOL | 0 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | LOAD SWITCH |
| JESD-30 Code | R-PDSO-G5 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.8V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What current limit and channel count does the MIC2090-2YM5 support, and how does it protect downstream circuits?
The MIC2090-2YM5 is a single-channel power distribution switch with a fixed current limit threshold that clamps output current to a preset level when a downstream short-circuit or overcurrent fault occurs. Once the fault is detected, the device throttles or disables the output to prevent damage to the load and the power source, automatically resuming normal operation once the fault clears — protecting USB peripherals and other 5 V loads without requiring external fuses.
How does the SOT-23-5 package of the MIC2090-2YM5 benefit PCB layout in space-constrained designs?
The MIC2090-2YM5 occupies the industry-standard SOT-23-5 footprint, measuring approximately 3.0 mm × 1.75 mm with 5 leads. This tiny outline requires minimal PCB real estate, making it suitable for dense layouts in portable handheld devices, USB power hubs, and IoT modules where board space is at a premium and a discrete fuse or PFET-plus-comparator solution would consume several times more area.
Can the MIC2090-2YM5 be used for power sequencing in multi-rail embedded systems?
Yes, the MIC2090-2YM5's active-high enable pin allows a microcontroller or sequencing logic to turn the load switch on and off at controlled intervals, enabling deliberate power-on sequencing of peripheral rails in embedded systems. By daisy-chaining enable signals from a supervisor IC, designers can bring up multiple 5 V subsystems — such as USB ports, wireless modules, and sensors — in a defined order to prevent latch-up or inrush current spikes that could destabilize the system power bus.
How does the MIC2090-2YM5 compare to using a discrete P-channel MOSFET plus current-sense comparator for USB load switching?
A discrete P-channel MOSFET plus current-sense resistor and comparator solution for USB load switching requires 3–5 components, careful gate-drive timing, and layout attention to minimize parasitic inductance. The MIC2090-2YM5 integrates all of this in a single SOT-23-5 chip, reducing component count to 1 device, shrinking PCB footprint by up to 80%, and eliminating design risk from gate-drive timing errors or sense-resistor tolerance that could cause nuisance tripping or delayed shutdown above the overcurrent threshold.
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