LTC1261CS8-4

The LTC1261CS8-4 is a charge pump voltage inverter with a low dropout linear regulator, designed by Linear Technology (now part of Analog Devices). It converts a positive input voltage into a negative output voltage efficiently, suitable for applications requiring negative bias voltages. The device operates over a wide input voltage range and provides a fixed -4V output.
Key features include a low supply current, typically around 200 µA, and a low output ripple due to an internal LDO regulator. It offers a shutdown mode that reduces the supply current to less than 1 µA, making it useful for battery-powered applications. The LTC1261CS8-4 is commonly used in systems requiring dual power supplies, such as operational amplifiers and data converters.
Packaged in an 8-pin SOIC, it is easy to integrate into designs with limited space. The simplicity of external components, typically just capacitors, enhances its suitability for compact and efficient designs. Overall, the LTC1261CS8-4 provides a reliable solution for generating negative voltages with minimal noise and power consumption.

The LTC1261CS8-4 is a switched-capacitor voltage inverter. Equivalent products include:
1. MAX660 – A similar charge pump voltage inverter by Maxim Integrated.
2. ICL7660 – A widely used charge pump inverter from Intersil/Maxim Integrated.
3. TC7660 – A charge pump voltage converter from Microchip Technology.
4. LM2660 – A CMOS charge pump inverter by Texas Instruments.
These alternatives offer comparable voltage inversion capabilities with similar performance characteristics. However, always check specific datasheets for compatibility in terms of voltage, current, and pin configuration.

The LTC1261CS8-4 is a switched-capacitor voltage inverter designed to generate a regulated negative voltage from a positive supply. Key features include:
1. Input Voltage Range: It operates with an input voltage range of 4.5V to 5.5V.
2. Output Voltage: It provides a fixed negative output voltage of -4V.
3. Efficiency: The device is highly efficient, with an efficiency rate of up to 96%.
4. Low Quiescent Current: It has low quiescent current consumption, typically around 200µA, which helps in minimizing power usage during idle states.
5. Shutdown Feature: Includes a shutdown feature that reduces the supply current to 1µA, conserving power when not in use.
6. Compact Package: Offered in an 8-pin SOIC package, making it suitable for space-constrained applications.
7. Short-Circuit Protection: Provides internal short-circuit protection, enhancing the reliability of the device.
8. Ease of Use: Requires minimal external components, simplifying the design process.
These features make the LTC1261CS8-4 suitable for applications requiring efficient negative voltage conversion with minimal power consumption and space usage.

The LTC1261CS8-4 is a CMOS switched-capacitor voltage inverter with a regulated output. It comes in an 8-pin SOIC package. Here's a brief overview of its pin functions:
1. V+ (Pin 1): Positive supply voltage input. Usually connected to the system's positive voltage rail.
2. OSC (Pin 2): Oscillator control pin. This pin allows adjusting the switching frequency with an external capacitor.
3. CAP+ (Pin 3): Positive terminal of the external charge-pump capacitor.
4. CAP- (Pin 4): Negative terminal of the external charge-pump capacitor.
5. GND (Pin 5): Ground connection.
6. OUT (Pin 6): Regulated negative output voltage.
7. FB (Pin 7): Feedback pin for setting the output voltage and stability.
8. SHDN (Pin 8): Shutdown pin. When driven low, it disables the device to conserve power.
The LTC1261CS8-4 is designed for applications requiring negative output voltage regulation, such as LCD bias supplies and operational amplifier power supplies.

The LTC1261CS8-4 is manufactured by Linear Technology Corporation. Linear Technology was an American company that specialized in the design and manufacturing of analog integrated circuits. It was known for producing a wide range of analog products, including amplifiers, interface products, power management solutions, and other precision devices used in various applications such as telecommunications, automotive, industrial, and consumer electronics. In 2017, Linear Technology was acquired by Analog Devices, another major player in the semiconductor industry, known for its focus on analog, mixed-signal, and digital signal processing technologies. The merger was aimed at strengthening Analog Devices' position in the analog market and expanding its portfolio of products for various sectors.

The LTC1261CS8-4 is a charge pump voltage inverter designed for applications requiring a negative supply voltage from a positive input. Its primary application areas include powering operational amplifiers, data converters, and other analog signal processing circuits where a negative voltage rail is necessary. It can also be used in battery-powered systems, portable devices, and other low-power electronics that require efficient voltage inversion. Its compact size makes it suitable for space-constrained designs.

The LTC1261CS8-4 is a charge pump voltage inverter integrated circuit typically packaged in an 8-lead SOIC (Small Outline Integrated Circuit) package.