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LM99-1CIMM from NS,National Semiconductor

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LM99-1CIMM

Manufacturer: NS

±1°C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface

Partnumber Manufacturer Quantity Availability
LM99-1CIMM,LM991CIMM NS 2000 In Stock

Description and Introduction

±1°C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface The LM99-1CIMM is a digital temperature sensor and fan controller manufactured by National Semiconductor (NS).  

**Specifications:**  
- **Supply Voltage:** 3.0V to 3.6V  
- **Temperature Measurement Range:** -40°C to +125°C  
- **Accuracy:** ±1°C (typical) from +60°C to +100°C  
- **Resolution:** 1°C  
- **Interface:** SMBus (System Management Bus) compatible  
- **Package:** 8-pin MSOP (Mini Small Outline Package)  

**Descriptions and Features:**  
- Monitors the temperature of a remote diode-connected transistor (e.g., CPU diode) and its own internal temperature.  
- Provides programmable fan speed control based on temperature readings.  
- Supports automatic fan speed adjustment to reduce acoustic noise.  
- Includes programmable temperature limits with alert functionality.  
- Features a resistance error correction circuit for improved accuracy.  
- Designed for thermal management in PCs, servers, and other electronic systems.  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

±1°C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface
Partnumber Manufacturer Quantity Availability
LM99-1CIMM,LM991CIMM NSC 60000 In Stock

Description and Introduction

±1°C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface The part **LM99-1CIMM** is manufactured by **NSC (National Semiconductor Corporation)**.  

### **Specifications:**  
- **Manufacturer:** National Semiconductor Corporation (NSC)  
- **Package:** CIMM (Chip-Scale Miniature Module)  
- **Type:** Digital Temperature Sensor with Integrated Fan Control  
- **Operating Voltage Range:** 3.0V to 3.6V  
- **Temperature Sensing Range:** -40°C to +125°C  
- **Accuracy:** ±1°C (typical)  
- **Interface:** SMBus/I²C compatible  
- **Features:** Programmable temperature thresholds, fan speed control, and alarm functions  

### **Descriptions and Features:**  
- **Integrated Fan Control:** Allows dynamic adjustment of fan speed based on temperature readings.  
- **High Accuracy:** Provides precise temperature monitoring for system thermal management.  
- **Low Power Consumption:** Optimized for energy-efficient applications.  
- **Programmable Alerts:** Configurable temperature thresholds for system warnings or shutdowns.  
- **Compact Form Factor:** CIMM package enables space-saving designs in compact electronics.  

This part is commonly used in **PCs, servers, and embedded systems** for thermal management.  

(Note: Always verify with the latest datasheet for updated specifications.)

Application Scenarios & Design Considerations

±1°C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface

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