## Overview: ADP165ACBZ-1.8-R7 The **ADP165ACBZ-1.8-R7** is a high-performance, low quiescent current, low dropout (LDO) linear regulator manufactured by **Analog Devices**. It is designed specifically for portable and battery-powered applications where space and power efficiency are critical. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Manufacturer** | Analog Devices Inc. | | **Output Voltage** | 1.8V (Fixed) | | **Output Current** | 150 mA (Maximum) | | **Input Voltage Range** | 2.2V to 5.5V | | **Dropout Voltage** | 120 mV @ 150 mA load | | **Quiescent Current** | 31 µA (Typical) | | **Shutdown Current** | < 1 µA | | **Package / Case** | 4-Ball WLCSP (Wafer Level Chip Scale Package) | --- ### 2. Physical and Packaging Characteristics This component uses a **WLCSP** package, which is essentially the size of the silicon die itself. This makes it one of the smallest footprints available for power management. * **Size:** Approximately 0.97 mm x 0.97 mm. * **Mounting:** Surface Mount (SMD). * **Tape & Reel:** The suffix "-R7" indicates it is supplied on a 7-inch reel for automated pick-and-place assembly. --- ### 3. Core Features The ADP165 series is optimized for high stability and low noise. Key features include: * **Stability with Tiny Capacitors:** It is stable with small 1 µF ceramic input and output capacitors. * **Low Noise:** Provides a clean power rail for sensitive analog circuits. * **Safety Protections:** * **Overcurrent Protection:** Limits output current to prevent damage during a short circuit. * **Thermal Overload Protection:** Shuts down the device if the internal temperature exceeds safe limits. * **Enable Pin:** Allows the system to turn the regulator on or off to save power. --- ### 4. Typical Application Circuit A standard implementation requires very few external components: ```text [Input 2.2V-5.5V] ----+----[ VIN ] [ VOUT ]----+---- [Output 1.8V] | | [Cin 1uF] [Cout 1uF] | [ EN ] | [GND] | [GND] +--- (Logic High/Low) ``` --- ### 5. Common Applications Due to its ultra-small size and low power consumption, it is commonly found in: * Mobile phones and tablets. * Digital cameras and audio players. * Wearable electronics (smartwatches, fitness trackers). * Portable medical devices.