**ADP1740ACPZ-75R7: A 750mA, High-PSRR, Low-Noise Linear Regulator for Precision Power Management**

In the realm of modern electronics, achieving clean and stable power is paramount, especially for noise-sensitive applications such as RF transceivers, medical instrumentation, high-fidelity audio, and precision data converters. The **ADP1740ACPZ-75R7** stands out as a superior solution, engineered to meet the stringent demands of these systems. This 750mA low-dropout (LDO) linear regulator combines **exceptional power supply rejection ratio (PSRR)** with **ultra-low output noise**, establishing itself as a cornerstone for precision power management.

The core strength of the ADP1740 lies in its ability to **reject upstream noise** with remarkable efficiency. It delivers a high PSRR of 70 dB at 10 kHz, effectively filtering out ripple and noise originating from switching power supplies or other noisy circuit elements. This ensures that even the most sensitive load circuits are powered by a pristine voltage rail, free from disturbances that could degrade performance.

Complementing its high PSRR is the regulator's **inherently low-noise architecture**. The ADP1740 features an ultra-low output noise of just 9 μV rms (integrated from 10 Hz to 100 kHz), which is critical for applications where signal integrity is non-negotiable. This minimal introduced noise preserves the fidelity of analog signals and clock sources, enabling higher accuracy and resolution in end systems.

Despite its high performance, the ADP1740 is designed for ease of use and integration. Its **low dropout voltage of 145 mV at 750 mA** maximizes efficiency and extends battery life in portable equipment. The device operates from an input voltage range of 2.3 V to 5.5 V, making it compatible with common power rails like 3.3 V and 5 V. The fixed 0.757 V output version (ACPZ-75R7) simplifies design by eliminating the need for external feedback resistors. Housed in a compact, thermally enhanced 8-lead LFCSP package, it offers excellent heat dissipation in a minimal footprint.

Additional features like **current limit and thermal overload protection** safeguard both the regulator and the load under fault conditions, enhancing system reliability.

**ICGOODFIND**: The ADP1740ACPZ-75R7 is an exemplary LDO regulator that masterfully balances high current delivery, outstanding noise performance, and robust power supply rejection. It is an indispensable component for designers who cannot compromise on power quality in their precision analog and mixed-signal designs.

**Keywords**: High PSRR, Low-Noise LDO, Precision Power Management, 750mA Regulator, Low Dropout Voltage.