**ADM8829ARTZ-REEL7: A High-Efficiency Switched Capacitor Voltage Inverter**
In the realm of modern electronics, the efficient generation of negative supply rails from a single positive input is a critical requirement for numerous applications, from operational amplifiers and sensors to data converters and display drivers. The **ADM8829ARTZ-REEL7** from Analog Devices stands out as a premier solution, engineered to deliver high-performance voltage inversion with exceptional efficiency and minimal footprint.
This integrated circuit is a **switched capacitor voltage inverter**, a topology chosen for its simplicity and component count reduction compared to inductive-based solutions. The device operates by charging an external flying capacitor during one clock phase and then reconfigured to discharge into an output reservoir capacitor during the next phase, effectively inverting the input voltage. The ADM8829ARTZ-REEL7 accepts a positive input voltage ranging from **+1.5V to +5.5V** and generates a corresponding negative output, typically at -VIN, with a guaranteed output current capability of **up to 50mA**.
A defining characteristic of this device is its **high power conversion efficiency, typically exceeding 90%**. This is a crucial advantage, as it minimizes power loss and heat generation, which is vital for battery-powered and thermally constrained portable equipment. This high efficiency is sustained across a wide range of load currents, thanks to the chip's internal low-on-resistance CMOS switches and an optimized switching frequency.
Furthermore, the ADM8829 requires only two small external capacitors—a flying capacitor and an output capacitor—to perform its function, enabling a remarkably compact and low-cost total solution. It features a **low quiescent current of just 90µA**, which directly contributes to prolonged battery life in portable devices. The inclusion of an integrated **shutdown mode** reduces the current consumption to a mere 1µA, effectively disconnecting the load from the input source and further conserving power when the negative rail is not required.
Housed in a space-saving **SOT-23-5 package**, the ADM8829ARTZ-REEL7 is ideally suited for applications where board real estate is at a premium. Its robustness and simplicity make it a go-to component for generating low-noise, negative supply rails in a diverse set of applications, including precision analog circuits, medical instruments, portable audio players, and battery management systems.
**ICGOOODFIND:** The ADM8829ARTZ-REEL7 is a highly efficient, compact, and simple-to-use switched capacitor voltage inverter. It excels in generating negative supplies from a single positive source with minimal external components, making it an **indispensable component for space-constrained and power-sensitive portable designs**.
**Keywords:** Switched Capacitor, Voltage Inverter, High Efficiency, Low Quiescent Current, SOT-23 Package.
