Linear Technology LTC1551LCMS8-4.1 Low Noise, Regulated Charge Pump Voltage Inverter

The LTC1551LCMS8-4.1 from Linear Technology is a high performance, low noise, regulated charge pump voltage inverter designed to provide a reliable and efficient power solution for applications requiring a negative voltage from a positive input. This compact component offers a precise -4.1V output from a 2.7V to 5.5V input voltage, making it ideal for portable battery-powered devices where space and power are at a premium.

With its advanced design, the LTC1551LCMS8-4.1 features a low operating current of only 1mA and an incredibly low shutdown current of less than 5µA, ensuring energy efficiency and extended battery life. The device operates at a high switching frequency of 20kHz, which allows for the use of small, low-cost capacitors while still maintaining a low output ripple, typically less than 15mV.

The LTC1551LCMS8-4.1 is housed in an MSOP-8 package, which is compact and suitable for automated assembly processes. Its small footprint makes it an excellent choice for space-constrained applications such as handheld medical devices, portable instrumentation, and mobile communications equipment.

This voltage inverter also features built-in over-temperature protection and low voltage lockout, providing additional reliability and safety for your designs. The device does not require any inductors, thereby simplifying the design and reducing noise typically associated with inductor-based switching regulators.

Key features of the LTC1551LCMS8-4.1 include:

• Regulated -4.1V Output from a 2.7V to 5.5V Input
• Low Noise Operation with Small External Capacitors
• High Switching Frequency of 20kHz
• Low Operating Current: 1mA
• Ultra-Low Shutdown Current:
• Over-Temperature Protection
• No Inductors Required for Minimal Noise
• MSOP-8 Package for Compact Design

The LTC1551LCMS8-4.1 is an optimal solution for designers looking to incorporate a negative voltage rail with minimal noise and high efficiency, ensuring stable operation for sensitive analog circuits and preserving the integrity of the power supply in a variety of electronic systems.