Linear Technology's LTC1682IMS8: High Power Charge Pump DC/DC Converter

The LTC1682IMS8 is a high-efficiency, micropower charge pump DC/DC converter designed by Linear Technology, now part of Analog Devices, that provides a versatile solution for applications requiring high voltage outputs. Enclosed in an MSOP-8 package, this device is engineered to convert a positive input voltage to a doubled positive output voltage or an inverted negative output voltage, making it suitable for a variety of portable electronic devices, such as mobile phones, PDAs, and digital cameras.

One of the most notable features of the LTC1682IMS8 is its ability to deliver a high output current up to 25mA with no inductors, which simplifies the design and reduces the overall component count. This characteristic, coupled with its high switching frequency of up to 1MHz, allows for the use of small, low-cost capacitors while still maintaining low output ripple and noise.

The device is highly efficient, with a typical operating current of just 120µA and a low shutdown current of 10µA, which is essential for extending battery life in portable applications. Furthermore, the LTC1682IMS8 offers a low voltage operation, starting from as low as 2.2V, making it compatible with a range of low voltage power sources.

Additional features of the LTC1682IMS8 include low external parts count, which is a boon for space-constrained designs, and a thermal shutdown mechanism that protects the device from overheating. It also has a 'Low-Battery Detector' that signals when the input voltage falls below a preset threshold, ensuring reliable operation even as the battery voltage declines.

Designed for ease of use, the LTC1682IMS8 can be readily implemented into a circuit with minimal external components. The MSOP-8 package is suitable for surface mount technology, aiding in the miniaturization of the overall design. With its combination of high efficiency, versatility, and compact form factor, the LTC1682IMS8 is an excellent choice for designers looking to create high-voltage power supplies in space and power-sensitive applications.

Overall, the LTC1682IMS8 from Linear Technology is a robust and reliable charge pump DC/DC converter that offers an optimal balance of performance, efficiency, and ease of integration for a wide array of high-voltage applications.