Product Overview
The MIC284 is a versatile digital thermal supervisor designed for CPU thermal supervision in computing applications. It measures both local and remote temperatures using a Sigma-Delta ADC for 8-bit results. Key features include a 2-wire SMBus-compatible interface, programmable thermostat settings, open-drain interrupt and overtemperature output pins for fan control or hardware shutdown, interrupt masking, low power shutdown mode, and failsafe response to diode faults. It operates from a 2.7V to 5.5V supply and is available in 8-lead SOIC and MSOP packages. Applications include desktop, server, and notebook computers, power supplies, test and measurement equipment, wireless systems, and networking/datacom hardware.
Product Attributes
- Brand: Microchip Technology Inc.
- Origin: Not specified
- Material: Not specified
- Color: Not specified
- Certifications: Not specified
Technical Specifications
| Parameter | Symbol | Min. | Typ. | Max. | Units | Conditions |
| Power Supply Voltage | VDD | 2.7 | 5.5 | V | Operating | |
| Power Supply Current (Normal Mode) | IDD | 350 | 750 | A | /INT, open, A0 = VDD or GND, CLK = DATA = high | |
| Power Supply Current (Shutdown Mode) | IDD | 3 | A | /INT, /CRIT open, A0 = VDD or GND, CLK = 100 kHz | ||
| Power-on Reset Time | tPOR | 200 | s | VDD > VPOR | ||
| Power-on Reset Voltage | VPOR | 2.0 | 2.7 | V | All registers reset to default values; A/D conversions initiated | |
| Local Temperature Accuracy | 1 | 2 | C | 0C TA +100C, /INT and /CRIT open, 3V VDD 3.6V | ||
| Remote Temperature Accuracy | 1 | 3 | C | 0C TD +100C, /INT and /CRIT open, 3V VDD 3.6V, 0C TA +85C | ||
| Local Zone Conversion Time | tCONV0 | 50 | 80 | ms | Note 2 | |
| Remote Zone Conversion Time | tCONV1 | 100 | 160 | ms | Note 2 | |
| Storage Temperature | TS | 65 | +150 | C | ||
| Ambient Temperature Range | TA | 55 | +125 | C | ||
| Package Thermal Resistance (SOIC-8) | JA | 152 | C/W | |||
| Package Thermal Resistance (MSOP-8) | JA | 206 | C/W |
2410311238_MICROCHIP-MIC284-0BM-TR_C19576633.pdf
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