The **ADP1754ACPZ-2.5-R7** is a high-performance, low dropout (LDO) linear regulator manufactured by Analog Devices. It is designed to provide a stable, low-noise power supply for high-speed digital circuits. --- ### ## Technical Specifications Below are the primary electrical characteristics of the ADP1754ACPZ-2.5-R7: | Parameter | Value / Specification | | :--- | :--- | | **Output Voltage** | 2.5V (Fixed) | | **Input Voltage Range** | 1.6V to 3.6V | | **Maximum Output Current** | 1.2 A | | **Dropout Voltage** | 105 mV (at 1.2A Load) | | **Accuracy** | ±2% over line, load, and temperature | | **PSRR** | 56 dB at 1 kHz | | **Operating Temperature** | -40°C to +125°C | | **Package Type** | 16-Lead LFCSP (3mm x 3mm) | --- ### ### Key Features and Internal Parts 1. **Low Dropout (LDO) Architecture:** The device uses a specialized PMOS pass element. This allows it to maintain a stable 2.5V output even when the input voltage is very close to the output (as low as 2.605V). 2. **Soft Start (SS) Pin:** Includes internal circuitry to control the output voltage ramp-up time. By connecting a capacitor to the SS pin, you can reduce inrush current during startup. 3. **Power Good (PG) Logic:** An open-drain output that signals when the output voltage has reached 90% of its nominal value. This is critical for sequencing multiple power rails in FPGAs or DSPs. 4. **Enable (EN) Input:** A digital input that allows the regulator to be turned on or off, reducing current consumption to less than 1.5 µA in shutdown mode. --- ### ### Pin Configuration The 16-lead LFCSP package is designed for high thermal efficiency. Key pins include: * **VIN:** Input supply pins (multiple pins to reduce resistance). * **VOUT:** Regulated 2.5V output. * **GND:** Ground reference. * **SS:** Soft start capacitor connection. * **PG:** Power Good indicator. * **EP (Exposed Pad):** Must be soldered to the PCB ground plane for heat dissipation. --- ### ### Common Applications * **FPGA and DSP Power:** Providing core or I/O rails for high-speed processors. * **Networking Equipment:** Switches and routers requiring stable 2.5V logic levels. * **Medical Imaging:** Used where low-noise power is required for signal integrity.