The **ADP162ACBZ-1.2-R7** is a high-performance, ultra-low quiescent current, low dropout (LDO) linear regulator manufactured by Analog Devices. It is specifically designed for portable and battery-operated applications where power efficiency and space are critical. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Input Voltage Range** | 2.2V to 5.5V | | **Fixed Output Voltage** | 1.2V | | **Output Current** | Up to 150 mA | | **Dropout Voltage** | 72 mV @ 150 mA load | | **Quiescent Current ($I_q$)** | 560 nA (No load) | | **Shutdown Current** | < 50 nA | | **Package Type** | 4-ball WLCSP (Wafer Level Chip Scale Package) | --- ### 2. Core Features * **Ultra-Low Quiescent Current:** The device consumes extremely low power (nano-ampere range) when idle, significantly extending battery life in "always-on" systems. * **Stability:** It is stable with small 1 $\mu$F ceramic input and output capacitors, allowing for a reduced PCB footprint. * **Safety Protections:** * **Thermal Overload Protection:** Prevents damage from overheating. * **Short-Circuit Protection:** Protects the device during current faults. * **Enable Input:** Includes an active-high enable pin to turn the regulator on or off. --- ### 3. Pin Configuration (4-Ball WLCSP) | Ball | Name | Function | | :--- | :--- | :--- | | **A1** | VIN | Regulator Input Supply. | | **A2** | VOUT | Regulated Output Voltage (1.2V). | | **B1** | EN | Enable Input. High = On, Low = Off. | | **B2** | GND | Ground Reference. | --- ### 4. Typical Applications Due to its tiny size and high efficiency, this part is commonly found in: 1. **Wearables:** Smartwatches and fitness trackers. 2. **IoT Nodes:** Remote sensors that must operate for years on a single battery. 3. **Mobile Handsets:** Powering low-voltage digital cores or I/O rails. 4. **Medical Imaging:** Portable diagnostic equipment. --- ### 5. Part Number Breakdown * **ADP162:** Device Family (Ultralow $I_q$ LDO). * **ACBZ:** Package Designator (WLCSP). * **1.2:** Fixed Output Voltage (1.2 Volts). * **R7:** Tape and Reel packaging (7-inch reel).