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LM3420AM5X-4.2 from NSC,National Semiconductor

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LM3420AM5X-4.2

Manufacturer: NSC

Lithium-Ion Battery Charge Controller

Partnumber Manufacturer Quantity Availability
LM3420AM5X-4.2,LM3420AM5X42 NSC 2412 In Stock

Description and Introduction

Lithium-Ion Battery Charge Controller The LM3420AM5X-4.2 is a battery charge controller manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Function:** Lithium-Ion (Li-Ion) Battery Charge Controller  
- **Output Voltage:** 4.2V (fixed)  
- **Package:** SOT-23-5  
- **Input Voltage Range:** 4.5V to 20V  
- **Charge Termination Method:** Constant Voltage (CV) with Current Monitoring  
- **Operating Temperature Range:** -40°C to +125°C  
- **Quiescent Current:** Typically 85µA  
- **Charge Current:** Adjustable via external resistor  

### **Descriptions:**  
The LM3420AM5X-4.2 is designed for single-cell Li-Ion battery charging applications. It provides a constant-voltage charging method with an accurate 4.2V regulation. The device includes thermal shutdown and under-voltage lockout (UVLO) protection for safe operation.  

### **Features:**  
- Precision 4.2V Output Regulation (±1%)  
- Adjustable Charge Current  
- Thermal Shutdown Protection  
- Under-Voltage Lockout (UVLO)  
- Low Quiescent Current (85µA typical)  
- Small SOT-23-5 Package  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

Lithium-Ion Battery Charge Controller

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