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LM3420M5-8.2 from NATIONAL,National Semiconductor

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LM3420M5-8.2

Manufacturer: NATIONAL

Lithium-Ion Battery Charge Controller

Partnumber Manufacturer Quantity Availability
LM3420M5-8.2,LM3420M582 NATIONAL 3000 In Stock

Description and Introduction

Lithium-Ion Battery Charge Controller The LM3420M5-8.2 is a precision shunt regulator manufactured by **NATIONAL** (now part of Texas Instruments).  

### **Specifications:**  
- **Output Voltage:** 8.2V (fixed)  
- **Tolerance:** ±1%  
- **Operating Current Range:** 0.6mA to 10mA  
- **Package:** SOT-23-5 (M5)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Reference Voltage:** 1.24V (typical)  
- **Dynamic Impedance:** 0.2Ω (typical)  

### **Descriptions and Features:**  
- Designed for precision voltage regulation in shunt applications.  
- Low dynamic impedance ensures stable voltage regulation.  
- Suitable for voltage reference and error amplifier applications.  
- Fixed output voltage eliminates the need for external resistors.  
- Small SOT-23-5 package for space-constrained designs.  

For detailed electrical characteristics, refer to the official datasheet.

Application Scenarios & Design Considerations

Lithium-Ion Battery Charge Controller
Partnumber Manufacturer Quantity Availability
LM3420M5-8.2,LM3420M582 NS 992 In Stock

Description and Introduction

Lithium-Ion Battery Charge Controller The LM3420M5-8.2 is a linear charger controller manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Part Number:** LM3420M5-8.2  
- **Manufacturer:** National Semiconductor (NS)  
- **Package:** SOT-23-5  
- **Output Voltage:** 8.2V (fixed)  
- **Input Voltage Range:** 4.5V to 75V  
- **Charging Current:** Adjustable via external resistor  
- **Operating Temperature Range:** -40°C to +125°C  
- **Features:**  
  - Constant-current/constant-voltage charging  
  - Thermal regulation to prevent overheating  
  - Low shutdown current (<1µA)  
  - Adjustable charge termination  
  - Reverse battery protection  

### **Descriptions:**  
The LM3420M5-8.2 is designed for charging lithium-ion (Li-ion) or lithium-polymer (Li-Po) batteries. It provides a fixed 8.2V output, making it suitable for two-cell Li-ion battery packs. The device supports both constant-current and constant-voltage charging phases and includes thermal regulation for safe operation.  

### **Features:**  
- **Wide Input Voltage Range (4.5V to 75V):** Supports various power sources.  
- **Adjustable Charging Current:** Set using an external resistor.  
- **Thermal Regulation:** Prevents overheating during charging.  
- **Low Shutdown Current:** Minimizes power consumption when inactive.  
- **Reverse Battery Protection:** Safeguards against incorrect battery connections.  
- **Compact SOT-23-5 Package:** Suitable for space-constrained applications.  

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

Application Scenarios & Design Considerations

Lithium-Ion Battery Charge Controller

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