The **ADP160ACBZ-2.1-R7** is a high-performance, ultra-low quiescent current, low dropout (LDO) linear regulator manufactured by Analog Devices. It is specifically designed for battery-powered portable devices where space and power efficiency are critical. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Analog Devices Inc. | | **Output Voltage** | 2.1V (Fixed) | | **Input Voltage Range** | 2.2V to 5.5V | | **Output Current** | 150 mA | | **Quiescent Current ($I_Q$)** | 560 nA (No load) | | **Dropout Voltage** | 60 mV (at 150 mA load) | | **PSRR** | 70 dB at 1 kHz | | **Package** | 4-ball WLCSP (Wafer Level Chip Scale Package) | --- ### 2. Physical Characteristics and Packaging * **WLCSP Package:** The "CBZ" in the part number indicates a 4-ball WLCSP package. This is an extremely small footprint (approx. 0.97 mm × 0.97 mm), making it ideal for mobile phones and wearables. * **Tape and Reel:** The "R7" suffix indicates that the part is supplied on a 7-inch tape and reel for automated SMT (Surface Mount Technology) assembly. --- ### 3. Core Functional Features * **Ultra-Low Quiescent Current:** One of its standout features is the incredibly low ground current (560 nA). This significantly extends battery life in "always-on" or standby modes. * **Stability with Tiny Capacitors:** It is stable with small 1 µF ceramic input and output capacitors, further reducing the total PCB area required. * **Protection Circuitry:** * **Overcurrent Protection:** Prevents damage during short-circuit conditions. * **Thermal Overload Protection:** Shuts down the device if the junction temperature exceeds safety limits. * **Logic Controlled Enable:** Allows the system microcontroller to turn the regulator on or off to save power. --- ### 4. Typical Applications * Mobile phones and smartphones. * Digital cameras and audio devices. * Portable Medical Equipment. * IoT Sensors and Wearables (Smartwatches). --- ### 5. Part Number Breakdown `ADP160` `ACBZ` `-2.1` `-R7` 1. **ADP160:** Series Name (LDO Linear Regulator). 2. **ACBZ:** Package code (WLCSP). 3. **2.1:** Fixed Output Voltage (2.1 Volts). 4. **R7:** Packaging type (7" Tape and Reel).