LTC1682CS8#PBF - High Efficiency, Low Noise Doubler Charge Pump

The LTC1682CS8#PBF is a high-performance, low noise, switched-capacitor voltage doubler produced by Linear Technology, now part of Analog Devices. This device is designed to provide a compact and efficient solution for generating a regulated output voltage that is twice the input voltage, which is particularly useful in applications where a higher voltage level is required but only a lower voltage power supply is available.

Encased in an 8-lead SOIC package, the LTC1682CS8#PBF operates over a wide input voltage range from 2.7V to 4.5V, making it suitable for a variety of battery-powered devices, including portable electronics, where extending battery life is crucial. The device integrates low-noise charge pump technology, which minimizes the output voltage ripple, ensuring a stable and clean supply that is essential for sensitive analog circuits and high-precision applications.

One of the key features of the LTC1682CS8#PBF is its high conversion efficiency, which can reach up to 99% under certain conditions. This efficiency is achieved through the use of low on-resistance internal switches that reduce voltage losses during the charge transfer process. Additionally, the device includes a PowerGood (PG) output that signals when the output voltage is within specifications, providing a reliable indicator for system monitoring and control.

The LTC1682CS8#PBF also offers a soft-start feature that gradually ramps up the output voltage, minimizing inrush current and potential for noise generation at startup. This feature is particularly useful in preventing glitches in sensitive electronic systems upon power-up.

For designers concerned with power consumption, the device includes a shutdown mode that reduces the supply current to less than 1µA, significantly extending battery life when the voltage doubler is not in use.

In summary, the LTC1682CS8#PBF from Linear Technology is a versatile, high-efficiency voltage doubler that is ideal for portable devices, medical equipment, and any application where a compact, noise-sensitive power solution is required. Its low-noise operation, high efficiency, and robust feature set make it a preferred choice for engineers and designers looking to enhance their power management solutions.