MCP9844T-BE/MNY Microchip Integrated Circuit (Small Outline No-lead) In Stock
The Microchip MCP9844T-BE/MNY is a digital temperature sensor in a compact 3x2 mm TDFN-8 SMT package with ±1°C maximum accuracy. It communicates via I2C/SMBus and supports programmable alert thresholds, making it ideal for thermal management in space-constrained embedded designs.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP9844T-BE/MNY Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7790(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ±1°C maximum accuracy over the full operating temperature range for precise thermal monitoring
- I2C/SMBus compatible interface with programmable alert and critical temperature thresholds
- Compact 3 mm x 2 mm x 0.75 mm TDFN-8 package enables dense PCB layouts with minimal board area
- Supports event and interrupt outputs for autonomous over-temperature shutdown without MCU polling
Applications
The MCP9844T-BE/MNY is ideal for thermal protection and management in portable consumer electronics, server motherboards, and battery management systems where accurate ±1°C temperature sensing is required in a minimal footprint. Its I2C interface allows daisy-chaining multiple sensors on a shared bus for multi-zone temperature monitoring in data center rack equipment. The programmable alert thresholds enable autonomous shutdown or fan control responses at defined limits such as 85°C, reducing software overhead.
Specifications
| Manufacturer Package Code | TDFN-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 13 |
| Accuracy-Max (Cel) | 1Cel |
| Body Breadth | 2mm |
| Body Height | 0.75mm |
| Body Length or Diameter | 3mm |
| Housing | PLASTIC |
| JESD-609 Code | e4 |
| Mounting Feature | SURFACE MOUNT |
| Operating Current-Max | 0.5mA |
| Output Interface Type | 2-WIRE INTERFACE |
| Package Body Material | PLASTIC |
| Package Shape/Style | RECTANGULAR |
| Sensors/Transducers Type | TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 1.7V |
| Surface Mount | YES |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Termination Type | SOLDER |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What temperature accuracy does the MCP9844T-BE/MNY offer and over what range?
The MCP9844T-BE/MNY achieves a maximum accuracy of ±1°C, making it suitable for precision thermal monitoring without external calibration. This accuracy is maintained across a typical operating temperature range of -40°C to +125°C, covering industrial and consumer application conditions where reliable thermal protection is critical.
How does the MCP9844T-BE/MNY connect to a host microcontroller?
The MCP9844T-BE/MNY uses a 2-wire I2C/SMBus interface operating at standard 100 kHz or fast-mode 400 kHz clock speeds. Up to 8 devices can share a single I2C bus using different address configurations, enabling multi-zone thermal monitoring across a PCB without adding additional bus lines.
What are the physical dimensions of the MCP9844T-BE/MNY package?
The MCP9844T-BE/MNY is housed in a TDFN-8 package measuring 3 mm x 2 mm with a maximum body height of 0.75 mm. This small surface-mount footprint makes it suitable for portable devices and densely packed PCBs where traditional SOT or SOIC packages would occupy too much board area.
Can the MCP9844T-BE/MNY trigger an alert without continuous MCU intervention?
Yes. The MCP9844T-BE/MNY includes programmable upper, lower, and critical temperature registers. When the sensed temperature crosses any of these thresholds — for example, exceeding a user-set limit of 85°C — the ALERT output pin asserts autonomously, allowing the host system to respond with fan control or shutdown sequences without constant polling over the I2C bus.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1800 | $1.18 |
| 100+ | $0.8800 | $88.00 |
| 1000+ | $0.8500 | $850.00 |
| 5000+ | $0.8400 | $4200.00 |
| 9900+ | $0.7800 | $7722.00 |
| 13200+ | $0.7790 | $10282.80 |
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