## Technical Overview: ADP165ACBZ-2.3-R7 The **ADP165ACBZ-2.3-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 wireless devices where battery life and space-saving are critical factors. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Output Voltage (Fixed)** | 2.3V | | **Input Voltage Range** | 2.2V to 5.5V | | **Maximum Output Current** | 150 mA | | **Quiescent Current ($I_Q$)** | 0.6 µA (Typ) at no load | | **Shutdown Current** | < 50 nA | | **Dropout Voltage** | 120 mV (at 150 mA load) | | **Package Type** | 4-ball WLCSP (Wafer Level Chip Scale Package) | --- ### 2. Core Features * **Ultra-Low Power Consumption:** With a quiescent current of only 0.6 µA, it significantly extends the standby time of battery-operated systems. * **Stability:** Optimized for use with small, low-ESR ceramic capacitors (1 µF), reducing the overall PCB footprint. * **Protection Circuitry:** * **Current-Limit Protection:** Prevents damage during overcurrent conditions. * **Thermal Overload Protection:** Automatically shuts down the device if the junction temperature exceeds safety limits. * **Enable Pin:** Includes an active-high enable input ($EN$), allowing the regulator to be turned off to further conserve power. --- ### 3. Pin Configuration (WLCSP) | Pin No. | Name | Function | | :--- | :--- | :--- | | **A1** | **VIN** | Regulator Input Supply. | | **A2** | **VOUT** | Regulated Output Voltage (2.3V). | | **B1** | **EN** | Enable Input. High = On; Low = Off. | | **B2** | **GND** | Ground. | --- ### 4. Typical Applications * **Mobile Phones:** Used for powering internal sub-circuits or sensors. * **IoT Devices:** Ideal for wireless sensor nodes that spend most of their time in sleep mode. * **Wearables:** Digital watches and fitness trackers requiring minimal space and low power. * **Digital Cameras:** Stable voltage supply for image processing or memory modules. --- ### 5. Part Numbering Breakdown * **ADP165:** Product Family (Ultra-low $I_Q$ LDO). * **ACBZ:** Package Code (WLCSP). * **2.3:** Fixed Output Voltage (2.3 Volts). * **R7:** Tape and Reel packaging (7-inch reel). ---