LTC3103EMSE
Compact synchronous buck DC-DC converters for voltage step-down applications
Manufacturer： linear-technology
series introduction
# LTC3103EMSE Product Series Introduction
## 1. Overview
The LTC3103EMSE is a highly innovative and versatile product series developed by Linear Technology (now part of Analog Devices). This series is specifically designed to address the challenges of energy harvesting and power management in a wide range of applications. With its advanced features and high - performance capabilities, the LTC3103EMSE offers a reliable solution for systems that require a stable and efficient power supply from low - power energy sources.
## 2. Key Features
### 2.1 Energy Harvesting Capabilities
- **Wide Input Voltage Range**: The LTC3103EMSE can operate with input voltages as low as 200mV, making it suitable for harvesting energy from various low - voltage sources such as thermoelectric generators (TEGs), piezoelectric transducers, and small solar cells. This wide input range allows the device to extract energy even from weak or intermittent sources, maximizing the overall energy harvesting efficiency.
- **High - Efficiency Conversion**: It employs a high - efficiency step - up converter topology that can convert the low - level input voltage to a higher, usable output voltage. The conversion efficiency is optimized over a wide range of input and output conditions, ensuring that a large portion of the harvested energy is effectively transferred to the load.
### 2.2 Power Management
- **Integrated Battery Charger**: The series includes an integrated battery charger that can charge a variety of rechargeable batteries, such as lithium - ion (Li - Ion), lithium - polymer (Li - Po), and supercapacitors. This feature enables the storage of the harvested energy for later use, providing a stable power supply to the system even when the energy source is not available.
- **Power Path Management**: The LTC3103EMSE incorporates power path management functionality, which allows the system to seamlessly switch between the energy harvesting source, the battery, and the load. This ensures that the load always receives power from the most appropriate source, optimizing the power consumption and extending the battery life.
### 2.3 Low - Power Operation
- **Quiescent Current**: The device has a very low quiescent current, which minimizes the power consumption when the system is in standby or low - power mode. This is crucial for energy - harvesting applications where the available power is limited, as it helps to conserve the harvested energy and increase the overall system efficiency.
- **Automatic Shutdown**: The LTC3103EMSE is equipped with an automatic shutdown feature that activates when the input voltage drops below a certain threshold. This helps to prevent the battery from over - discharging and protects the device from damage.
### 2.4 Protection Features
- **Over - Voltage Protection (OVP)**: The series includes over - voltage protection to safeguard the battery and the load from excessive voltage. If the output voltage exceeds a predefined limit, the OVP circuit will automatically shut down the charger or regulate the output voltage to a safe level.
- **Over - Current Protection (OCP)**: Over - current protection is implemented to prevent the device from being damaged by excessive current. The OCP circuit monitors the current flowing through the device and limits it to a safe value if necessary.
## 3. Applications
### 3.1 Industrial Monitoring
- In industrial environments, the LTC3103EMSE can be used to power wireless sensor nodes for monitoring temperature, pressure, vibration, and other parameters. These sensors can be placed in remote or hard - to - reach locations where it is difficult to replace batteries frequently. By harvesting energy from ambient sources such as heat or mechanical vibrations, the LTC3103EMSE enables the sensors to operate continuously without the need for external power supplies.
### 3.2 Wearable Devices
- Wearable devices
Images for reference
10-MSOP-EP
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