The **ADP151ACBZ-2.6-R7** is a high-performance, ultra-low noise, low dropout (LDO) linear regulator manufactured by Analog Devices. It is specifically designed for noise-sensitive applications where space is at a premium. --- ### ## Technical Specifications The following table summarizes the key electronic characteristics of the component: | Parameter | Specification | | :--- | :--- | | **Output Voltage** | 2.6V (Fixed) | | **Input Voltage Range** | 2.2V to 5.5V | | **Maximum Output Current** | 200 mA | | **Dropout Voltage** | 140 mV (at 200 mA load) | | **PSRR (Power Supply Rejection Ratio)** | 70 dB at 10 kHz | | **RMS Noise** | 9 µV (from 10 Hz to 100 kHz) | | **Quiescent Current (Low Load)** | 10 µA | | **Package Type** | 4-ball WLCSP (0.76 mm x 0.76 mm) | --- ### ### Key Electronic Features 1. **Ultra-Low Noise:** With an RMS noise of only 9 µV, it is ideal for powering RF circuits, VCOs (Voltage Controlled Oscillators), and sensitive analog front-ends without the need for additional bulky filters. 2. **Stability:** The device is stable with tiny 1 µF ceramic input and output capacitors. This contributes significantly to reducing the overall PCB footprint. 3. **Low Dropout (LDO):** The low dropout voltage (140 mV at full load) allows the regulator to maintain a 2.6V output even when the input battery voltage drops very close to that level, extending battery life in portable devices. 4. **Enable Pin:** Includes a dedicated precision enable pin to turn the device on or off, reducing current consumption to less than 1 µA in shutdown mode. --- ### ### Pin Configuration (WLCSP) The 4-ball Wafer Level Chip Scale Package is arranged as follows: | Ball | Symbol | Description | | :--- | :--- | :--- | | **A1** | VIN | Regulator Input Supply. | | **A2** | VOUT | Regulated Output Voltage. | | **B1** | EN | Enable Input (High = On, Low = Off). | | **B2** | GND | Ground. | --- ### ### Typical Application Circuit To use this part in a design, the following configuration is standard: ```text Input (2.2V - 5.5V) ----[ Cin: 1uF ]---- VIN [ADP151] VOUT ----[ Cout: 1uF ]---- Output (2.6V) | | EN GND | | Logic CTRL Ground ``` ---