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LM2577MX-ADJ from NS,National Semiconductor

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LM2577MX-ADJ

Manufacturer: NS

SIMPLE SWITCHER Step-Up Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2577MX-ADJ,LM2577MXADJ NS 7422 In Stock

Description and Introduction

SIMPLE SWITCHER Step-Up Voltage Regulator The LM2577MX-ADJ is a switching regulator IC manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** National Semiconductor (NS)  
- **Type:** Step-Up (Boost), Flyback, and Forward Converter Switching Regulator  
- **Output Voltage:** Adjustable (1.23V to 40V)  
- **Output Current:** Up to 3A (switch current limit)  
- **Input Voltage Range:** 3.5V to 40V  
- **Switching Frequency:** 52 kHz (fixed)  
- **Efficiency:** Up to 80%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-16 (MX suffix)  

### **Descriptions:**
The LM2577MX-ADJ is a monolithic integrated circuit designed for step-up (boost), flyback, and forward converter applications. It includes a fixed-frequency oscillator, a high-current switch, and voltage feedback control circuitry. The adjustable output version allows flexibility in setting the desired output voltage using external resistors.

### **Features:**
- Adjustable output voltage (1.23V to 40V)  
- 3A switch current limit  
- Wide input voltage range (3.5V to 40V)  
- Fixed-frequency oscillator (52 kHz)  
- Low standby current (50 µA typical in shutdown mode)  
- Thermal shutdown and current limit protection  
- Requires minimal external components  
- Available in SOIC-16 package  

This information is strictly based on the manufacturer's datasheet and specifications.

Application Scenarios & Design Considerations

SIMPLE SWITCHER Step-Up Voltage Regulator

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