**ADP160ACBZ-2-R7: A Comprehensive Technical Overview of the Ultra-Low Quiescent Current 200 mA CMOS LDO Linear Regulator**
In the realm of power management, efficiency is paramount, especially for battery-powered and always-on applications. The **ADP160ACBZ-2-R7** from Analog Devices stands out as a pinnacle of ultra-low power design, offering a robust solution for systems where every microamp counts. This article delves into the technical specifications, key features, and primary applications of this advanced CMOS LDO linear regulator.
At its core, the ADP160ACBZ-2-R7 is a **200 mA low-dropout (LDO) linear regulator** fabricated with advanced CMOS process technology. Its most defining characteristic is its **ultra-low quiescent current**, which is a mere **320 nA** under load. This minuscule current draw remains exceptionally stable, increasing by only 20 nA when the device is disabled, making it a champion for power conservation. This feature is critical for extending battery life in portable devices, a key design goal for modern electronics.
The regulator accepts a wide input voltage range from **2.2 V to 5.5 V**, providing significant flexibility for various power sources, including multi-cell alkaline batteries, single-cell lithium-ion/Lithium Polymer batteries, and regulated 3.3 V or 5 V rails. It delivers a fixed, preset output voltage of **2.2 V** with an accuracy of ±1.5% over line, load, and temperature variations, ensuring a stable and reliable supply for sensitive downstream components.
A significant advantage of the ADP160ACBZ-2-R7 is its **low dropout voltage**, typically **110 mV at a 200 mA load**. This low dropout allows the regulator to continue regulating its output even when the input voltage dips very close to the output level, maximizing utilization of the available power source and preventing premature shutdowns.
The device incorporates a host of features that enhance system reliability. It offers **excellent power supply rejection ratio (PSRR)**, typically 70 dB at 1 kHz, which effectively attenuates noise and ripple from the input supply, ensuring a clean output. Furthermore, it includes built-in protection mechanisms such as **current limiting and thermal shutdown**, safeguarding both the regulator and the load under fault conditions. The inclusion of an active-high **enable (EN) pin** provides designers with digital control to put the device into a near-zero-power shutdown state, reducing the total system standby current to almost nothing.
Housed in a compact, 5-bump **0.65 mm pitch WLCSP (Wafer-Level Chip-Scale Package)**, the ADP160ACBZ-2-R7 is engineered for space-constrained applications. Its minimal external component requirement—typically just input and output capacitors—further reduces the overall solution size.
**ICGOOODFIND**: The ADP160ACBZ-2-R7 is an exceptional ultra-low quiescent current LDO, engineered to maximize battery life and reliability in power-sensitive applications. Its combination of **320 nA quiescent current**, high PSRR, and robust protection features makes it an ideal choice for portable medical devices, wireless sensors, IoT nodes, and always-on communication modules.
**Keywords**: Ultra-Low Quiescent Current, CMOS LDO Regulator, 200 mA Output, Low Dropout Voltage, Power Supply Rejection Ratio (PSRR).
