LTC1682IS8-3.3 - High Efficiency, Low Noise Doubler Charge Pump

The LTC1682IS8-3.3 is a high-performance, low noise, regulated charge pump voltage doubler produced by Linear Technology, now part of Analog Devices. This device is designed to provide a small, simple, and efficient solution for generating a regulated output voltage that is twice the input voltage. It is particularly suitable for applications that require a low-noise power supply, such as RF applications, portable communication devices, and various battery-powered equipment.

Key Features:

• Regulated Output Voltage: The LTC1682IS8-3.3 delivers a fixed output voltage of 3.3V, which is ideal for powering 3.3V logic in systems with a single-cell lithium-ion or multi-cell alkaline/NiCd/NiMH batteries.
• High Efficiency: This device operates with high efficiency, minimizing power loss and maximizing battery life. It is capable of delivering up to 100mA of output current with typical efficiencies of 90% or higher.
• Low Noise Operation: The LTC1682IS8-3.3 includes a low noise (1/f) charge pump that ensures a quiet power supply, making it particularly well-suited for noise-sensitive applications.
• Shutdown Mode: A shutdown mode is included to reduce power consumption when the device is not in use, providing a typical quiescent current of only 10µA.
• Compact Package: The device is available in an 8-lead SOIC package, which is compact and suitable for space-constrained applications.
• Wide Input Voltage Range: The LTC1682IS8-3.3 can operate from an input voltage range of 2.2V to 4.4V, accommodating a variety of power sources.
• No Inductor Required: As a charge pump, it does not require an inductor, simplifying the circuit design and reducing overall component count.

Applications:

• Portable Communication Devices
• Handheld Instruments
• Battery-Powered Equipment
• RF Power Supplies

In conclusion, the LTC1682IS8-3.3 from Linear Technology is a versatile and efficient solution for doubling the voltage in a wide range of applications. Its low noise characteristics, high efficiency, and small package make it an excellent choice for designers looking to optimize their power supply design.