MCP73213-A6SI/MF
Dual-cell lithium-ion/polymer battery charger ICs in compact DFN packages
Manufacturer： microchip
series introduction
# Introduction to the MCP73213 - A6SI/MF Product Series
## 1. Overview
The MCP73213 - A6SI/MF is a highly advanced and versatile product series designed for battery charging applications. Manufactured by Microchip Technology, a leading name in the semiconductor industry, this series offers a comprehensive solution for efficiently charging single - cell lithium - ion (Li - Ion) and lithium - polymer (Li - Po) batteries. With its compact design, high performance, and a range of integrated features, it has become a popular choice for various portable electronic devices.
## 2. Key Features
### 2.1 Charging Algorithm
- **Constant - Current/Constant - Voltage (CC/CV) Charging**: The MCP73213 - A6SI/MF employs a well - established CC/CV charging algorithm. In the initial stage of charging, it supplies a constant current to the battery, which allows for a rapid charge up to a certain voltage level. Once the battery voltage reaches the preset value, the charger switches to the constant - voltage mode, gradually reducing the charging current as the battery approaches full charge. This ensures a safe and efficient charging process, preventing over - charging and extending the battery's lifespan.
- **Programmable Charge Current**: The charge current can be easily programmed using an external resistor. This flexibility allows designers to tailor the charging speed according to the specific requirements of the battery and the application. For example, in applications where fast charging is crucial, a higher charge current can be set, while in scenarios where battery longevity is a priority, a lower charge current can be selected.
### 2.2 Safety Features
- **Thermal Regulation**: To prevent overheating during the charging process, the MCP73213 - A6SI/MF is equipped with thermal regulation. It monitors its own temperature and adjusts the charge current accordingly. If the temperature exceeds a safe operating limit, the charge current is reduced to prevent damage to the charger and the battery.
- **Over - Voltage Protection**: The series provides over - voltage protection for the battery. It continuously monitors the battery voltage and stops the charging process if the voltage exceeds the predefined safe level. This protects the battery from potential damage caused by over - voltage, which can lead to reduced battery capacity and even safety hazards.
- **Under - Voltage Lockout (UVLO)**: UVLO ensures that the charger only operates when the input voltage is within a specified range. If the input voltage drops below the UVLO threshold, the charger shuts down to prevent improper charging and potential damage to the battery.
### 2.3 Integration and Compactness
- **Single - Chip Solution**: The MCP73213 - A6SI/MF is a single - chip charger, which means that it integrates all the necessary charging functions into a single integrated circuit. This reduces the need for external components, simplifies the circuit design, and saves board space. It is particularly beneficial for portable devices where size and weight are critical factors.
- **Small Form Factor**: The device comes in a small and space - efficient package, such as the SOT - 23 - 6 package. This makes it suitable for use in compact electronic devices, including smartphones, tablets, wearables, and other portable consumer electronics.
## 3. Electrical Specifications
### 3.1 Input Voltage Range
The MCP73213 - A6SI/MF can operate with an input voltage range typically from 4.35V to 6.0V. This wide input voltage range allows it to be powered by a variety of sources, such as USB ports, wall adapters, or other power supplies commonly used in portable devices.
### 3.2 Charge Voltage
The charge voltage is set at 4.2V
Images for reference
10-DFN PKG
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