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LTC3421EUF from LT

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14.893ms

LTC3421EUF

Manufacturer: LT

3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect

Partnumber Manufacturer Quantity Availability
LTC3421EUF LT 172 In Stock

Description and Introduction

3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect The LTC3421EUF is a high efficiency, synchronous step-up DC/DC converter manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 0.5V to 5V  
- **Output Voltage Range:** Up to 5.25V (adjustable)  
- **Output Current:** Up to 300mA  
- **Switching Frequency:** 1MHz (typical)  
- **Efficiency:** Up to 95%  
- **Quiescent Current:** 20µA (typical)  
- **Shutdown Current:** <1µA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-Lead QFN (3mm x 3mm)  

### **Descriptions:**  
The LTC3421EUF is designed for low input voltage applications, making it suitable for single-cell or dual-cell alkaline/NiMH battery-powered systems. It features Burst Mode® operation for improved efficiency at light loads and includes internal synchronous rectification for higher power conversion efficiency.  

### **Features:**  
- **Wide Input Voltage Range:** Operates from 0.5V to 5V.  
- **High Efficiency:** Up to 95% due to synchronous rectification.  
- **Low Quiescent Current:** 20µA extends battery life.  
- **Burst Mode® Operation:** Enhances efficiency at light loads.  
- **Adjustable Output Voltage:** Set via an external resistor divider.  
- **Internal Soft-Start:** Reduces inrush current.  
- **Thermal Shutdown Protection:** Prevents overheating.  
- **Small Footprint:** 10-Lead QFN package (3mm x 3mm).  

The LTC3421EUF is commonly used in portable electronics, energy harvesting, and low-power wireless applications.

Partnumber Manufacturer Quantity Availability
LTC3421EUF LINEAR 48 In Stock

Description and Introduction

3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect The LTC3421EUF is a high efficiency, synchronous step-up DC/DC converter manufactured by Linear Technology (now part of Analog Devices).  

### **Key Specifications:**  
- **Input Voltage Range:** 0.5V to 5V  
- **Output Voltage Range:** Up to 5.25V  
- **Output Current:** Up to 300mA  
- **Switching Frequency:** 1MHz (typical)  
- **Efficiency:** Up to 95%  
- **Quiescent Current:** 20µA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-Lead QFN (4mm × 4mm)  

### **Descriptions and Features:**  
- **Synchronous Rectification:** Improves efficiency by eliminating the need for an external Schottky diode.  
- **Low Start-Up Voltage:** Operates down to 0.5V, making it suitable for single-cell battery applications.  
- **Automatic Burst Mode® Operation:** Reduces quiescent current to 20µA at light loads for improved efficiency.  
- **Internal Soft-Start:** Prevents inrush current during startup.  
- **Fixed Frequency Operation:** Minimizes noise and simplifies filtering.  
- **Shutdown Mode:** Reduces supply current to <1µA when disabled.  
- **Applications:** Energy harvesting, single-cell or two-cell battery-powered devices, portable electronics, and low-voltage power supplies.  

This device is designed for space-constrained and power-sensitive applications requiring high efficiency from very low input voltages.

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