## ADP5062ACPZ-1-R7 Electronic Components Overview The **ADP5062ACPZ-1-R7** is a highly integrated linear battery charger management IC designed for single-cell Li-Ion or Li-Polymer batteries. It is manufactured by Analog Devices and is widely used in portable devices due to its high efficiency and small footprint. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Input Voltage Range** | 4.0 V to 6.7 V | | **Charge Current** | Up to 1300 mA (Programmable) | | **Battery Voltage** | 4.2 V (Standard for this variant) | | **Interface** | I²C Compatible | | **Package** | 20-lead LFCSP (Lead Frame Chip Scale Package) | | **Operating Temp** | -40°C to +125°C | --- ### 2. Core Functional Blocks The internal architecture consists of several critical electronic sections: 1. **Linear Charger Controller:** Manages the three stages of battery charging: * **Trickle Charge:** For deeply discharged batteries. * **Constant Current (CC):** Fast charging phase. * **Constant Voltage (CV):** Final saturation phase to reach full capacity. 2. **Internal Power FET:** Includes an integrated power MOSFET that passes current from the VIN to the battery (VISO/VBAT). This eliminates the need for an external sensing resistor or blocking diode. 3. **I²C Interface:** Allows a microcontroller to program parameters such as: * Fast charge current. * Termination voltage. * Thermal limits and safety timers. 4. **Protection Circuitry:** * **Thermal Management:** Reduces charge current if the die temperature exceeds a specific threshold. * **NTC Input:** Monitors external battery temperature via a thermistor. * **JEITA Compliance:** Adjusts charging based on battery temperature for safety. --- ### 3. Application Circuit Example In a typical circuit, the ADP5062 requires minimal external components. ```c // Typical Pin Configuration Logic VIN -> Input Power (USB or Wall Adapter) VBAT -> Connected to Single-cell Li-Ion Battery SCL/SDA-> Connected to Host Processor I2C Bus THR -> Connected to 10k NTC Thermistor (for Temp sensing) CHG_OK -> Status LED indicator ``` --- ### 4. Significant Features * **Dead Battery Recovery:** Can start charging even if the battery voltage is near zero. * **USB Support:** Includes current limiting features to comply with USB 2.0/3.0 power specifications. * **Power Path Management:** Allows the system to be powered directly from the input source while the battery is charging or disconnected.