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LM3420M5X-12.6 from NATIONAL,National Semiconductor

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LM3420M5X-12.6

Manufacturer: NATIONAL

Lithium-Ion Battery Charge Controller

Partnumber Manufacturer Quantity Availability
LM3420M5X-12.6,LM3420M5X126 NATIONAL 4210 In Stock

Description and Introduction

Lithium-Ion Battery Charge Controller The LM3420M5X-12.6 is a voltage regulator manufactured by **National Semiconductor** (now part of Texas Instruments).  

### **Specifications:**  
- **Output Voltage:** 12.6V (fixed)  
- **Input Voltage Range:** Up to 75V  
- **Output Current:** Adjustable (depends on external components)  
- **Package:** SOT-23-5 (M5X)  
- **Topology:** Switching regulator (buck/boost capable)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Features:**  
  - High input voltage capability  
  - Adjustable output current limit  
  - Thermal shutdown protection  
  - Under-voltage lockout (UVLO)  
  - Designed for LED driver applications  

### **Description:**  
The LM3420M5X-12.6 is a high-voltage switching regulator designed primarily for driving LEDs. It supports buck, boost, and buck-boost configurations, making it versatile for various LED applications.  

### **Features:**  
- **Wide Input Voltage Range:** Suitable for automotive and industrial applications.  
- **Constant Current/Voltage Control:** Ensures stable LED operation.  
- **Thermal Protection:** Prevents overheating.  
- **Small Form Factor:** SOT-23-5 package for space-constrained designs.  

This device is optimized for LED driver circuits but can also be used in other high-voltage regulation applications.

Application Scenarios & Design Considerations

Lithium-Ion Battery Charge Controller
Partnumber Manufacturer Quantity Availability
LM3420M5X-12.6,LM3420M5X126 NAS 69500 In Stock

Description and Introduction

Lithium-Ion Battery Charge Controller The LM3420M5X-12.6 is a precision adjustable shunt regulator manufactured by Texas Instruments (formerly National Semiconductor, NAS).  

### **Specifications:**  
- **Output Voltage:** 12.6V (fixed)  
- **Package:** SOT-23-5 (M5X)  
- **Reference Voltage:** 1.24V (typical)  
- **Operating Current:** 85µA (typical)  
- **Accuracy:** ±1.5% (over temperature)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Shunt Current Capability:** Up to 20mA  

### **Descriptions and Features:**  
- Designed for precision voltage regulation in low-power applications.  
- Adjustable output voltage using external resistors.  
- Low operating current makes it suitable for battery-powered systems.  
- Stable with low-ESR capacitors.  
- Features thermal shutdown protection.  
- Used in power management, voltage references, and battery charging circuits.  

The device is commonly used in applications requiring a stable voltage reference or regulation, such as power supplies, LED drivers, and portable electronics.

Application Scenarios & Design Considerations

Lithium-Ion Battery Charge Controller
Partnumber Manufacturer Quantity Availability
LM3420M5X-12.6,LM3420M5X126 NS 4965 In Stock

Description and Introduction

Lithium-Ion Battery Charge Controller The LM3420M5X-12.6 is a lithium-ion battery charger controller from Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Manufacturer:** Texas Instruments (formerly National Semiconductor)  
- **Part Number:** LM3420M5X-12.6  
- **Package:** SOT-23-5  
- **Input Voltage Range:** 4.5V to 75V  
- **Output Voltage:** 12.6V (adjustable for 3-cell Li-ion batteries)  
- **Charging Current:** Adjustable via external resistor  
- **Operating Temperature Range:** -40°C to +125°C  
- **Features:**  
  - Constant-current/constant-voltage charging  
  - Programmable charge termination  
  - Thermal regulation  
  - Low shutdown current (<1µA)  
  - Under-voltage lockout (UVLO)  
  - Reverse-battery protection  

### **Descriptions:**  
The LM3420M5X-12.6 is a high-voltage battery charger controller designed for 3-cell lithium-ion (Li-ion) battery packs. It provides precise charging control with constant-current and constant-voltage regulation. The device is suitable for applications requiring wide input voltage ranges, such as automotive and industrial systems.  

### **Features:**  
- **Wide Input Voltage Range (4.5V–75V):** Supports high-voltage applications.  
- **Adjustable Charging Current:** Set via an external resistor.  
- **Thermal Regulation:** Prevents overheating during charging.  
- **Low Quiescent Current:** Enhances efficiency in standby mode.  
- **Integrated Protection:** Includes UVLO and reverse-battery protection.  
- **Compact Package:** SOT-23-5 for space-constrained designs.  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Lithium-Ion Battery Charge Controller

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