The LM84 is a remote diode temperature sensor, Delta-Sigma analog-to-digital converter, and digital over-temperature detector with an SMBus™ interface. The LM84 senses its own temperature as well as the temperature of a target IC with a diode junction, such as a Pentium® II processor or a diode connected 2N3904. A diode junction (semiconductor junction) is required on the target IC's die. A host can query the LM84 at any time to read the temperature of this diode as well as the temperature state of the LM84 itself. A T_CRIT_A# interrupt output becomes active when the temperature is greater than a programmable comparator limit, T_CRIT.

The host can program as well as read back the state of the T_CRIT register. Three state logic inputs allow two pins (ADD0, ADD1) to select up to 9 SMBus address locations for the LM84. The sensor powers up with default thresholds of 127°C for T_CRIT.

---

• Directly senses die temperature of remote ICs
• Senses temperature of remote diodes
• SMBus compatible interface, supports SMBus Timeout
• Register readback capability
• 7 bit plus sign temperature data format
• 2 address select lines enable 9 LM84s to be connected to a single bus

Key Specifications Supply Voltage 3.0V - 3.6V Supply Current 1 mA (max) Local Temperature Accuracy ±1.0°C (typ) Remote Diode Temperature Accuracy +60°C to +100°C ±3°C (max) 0°C to +125°C ±5°C (max)

• Local sensor accuracy (Max) (+/- C)
• 1
• Type
• Remote
• Operating temperature range (C)
• 0 to 125
• Supply voltage (Min) (V)
• 3
• Interface type
• I2C, SMBus
• Supply voltage (Max) (V)
• 3.6
• Supply current (Max) (uA)
• 1000
• Temp resolution (Max) (bits)
• 8
• Features
• ALERT
• Remote channels (#)
• 1
• Addresses
• 9
• Rating
• Catalog

LM84的完整型号有：LM84BIMQA/NOPB、LM84BIMQAX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM84BIMQA/NOPB，工作温度：0 to 125，封装：SSOP (DBQ)-16，包装数量MPQ：95个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM84BIMQA/NOPB的批量USD价格：2.035（1000+）

LM84BIMQAX/NOPB，工作温度：0 to 125，封装：SSOP (DBQ)-16，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM84BIMQAX/NOPB的批量USD价格：1.709（1000+）