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LM3189N

LM3189 FM IF System

Partnumber Manufacturer Quantity Availability
LM3189N 3821 In Stock

Description and Introduction

LM3189 FM IF System The LM3189N is a high-efficiency, step-up DC-DC converter manufactured by Texas Instruments. Below are its key specifications, descriptions, and features:

### **Manufacturer:**  
Texas Instruments  

### **Specifications:**  
- **Input Voltage Range:** 0.9V to 5.5V  
- **Output Voltage Range:** Adjustable (up to 5.5V)  
- **Output Current:** Up to 100mA  
- **Switching Frequency:** 1.2MHz (typical)  
- **Efficiency:** Up to 90%  
- **Quiescent Current:** 19µA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  

### **Descriptions:**  
The LM3189N is a boost converter designed for low-input voltage applications, such as single-cell or dual-cell battery-powered devices. It integrates a power switch and provides a regulated output voltage with minimal external components.  

### **Features:**  
- **Low Start-Up Voltage:** Operates down to 0.9V  
- **Integrated Power Switch:** Simplifies design  
- **Automatic Load Disconnect:** Prevents battery drain when disabled  
- **Adjustable Output Voltage:** Via external resistors  
- **Thermal Shutdown Protection:** Safeguards against overheating  
- **Low Shutdown Current:** <1µA  

This information is based on the manufacturer's datasheet. For detailed electrical characteristics, refer to Texas Instruments' official documentation.

Partnumber Manufacturer Quantity Availability
LM3189N NSC 13 In Stock

Description and Introduction

LM3189 FM IF System The LM3189N is a monolithic switching regulator manufactured by National Semiconductor (NSC). Here are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**
- **Input Voltage Range:** 4V to 30V  
- **Output Voltage:** Adjustable (via external resistors)  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 150kHz (fixed)  
- **Efficiency:** Up to 85%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** 8-Pin DIP (Dual In-line Package)  

### **Descriptions:**
- The LM3189N is a step-down (buck) switching regulator designed for high-efficiency power conversion.  
- It integrates a power switch, oscillator, and control circuitry to simplify design.  
- Suitable for battery-powered and industrial applications requiring stable DC voltage.  

### **Features:**
- **Wide Input Voltage Range:** Supports 4V to 30V input.  
- **Adjustable Output Voltage:** Configurable via external resistors.  
- **High Efficiency:** Reduces power loss with synchronous rectification.  
- **Internal Current Limiting:** Protects against overloads.  
- **Thermal Shutdown:** Prevents damage from overheating.  
- **Low Dropout Operation:** Maintains regulation even when input voltage is close to output.  

This information is strictly factual and derived from the manufacturer's datasheet.

Partnumber Manufacturer Quantity Availability
LM3189N NS 2499 In Stock

Description and Introduction

LM3189 FM IF System The LM3189N is a high-efficiency, step-up DC-DC converter manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** Adjustable up to 40V  
- **Switching Frequency:** 1.2MHz (typical)  
- **Maximum Output Current:** 100mA (dependent on input/output conditions)  
- **Efficiency:** Up to 85%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  

### **Descriptions:**  
The LM3189N is designed for applications requiring a high-voltage boost from a low-voltage input, such as OLED displays, bias supplies, and industrial sensors. It integrates a power switch, oscillator, and control circuitry to minimize external components.  

### **Features:**  
- **Integrated Power Switch** (0.5Ω typical)  
- **Adjustable Output Voltage** via external resistors  
- **Low Quiescent Current** (300µA typical)  
- **Soft-Start Function** to limit inrush current  
- **Thermal Shutdown Protection**  
- **Short-Circuit Protection**  

This device is suitable for battery-powered applications where efficiency and compact design are critical.

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