Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tube,Tube |
| ProductStatus | Obsolete |
| Function | Ratiometric |
| OutputConfiguration | Positive or Negative |
| Topology | Charge Pump |
| OutputType | Fixed |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 1.5V |
| Voltage-Input(Max) | 10V |
| Voltage-Output(Min/Fixed) | -Vin, nVin, Vin/2 |
| Current-Output | 20mA |
| Frequency-Switching | 10kHz |
| SynchronousRectifier | No |
| OperatingTemperature | 0°C ~ 70°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Tổng quan
Description
The ICL7660CSA is a switched-capacitor voltage converter integrated circuit designed to invert input voltages, effectively producing a negative output voltage from a positive input voltage. It is particularly useful in applications where a negative supply rail is needed, but only a positive supply is available. The device operates with a wide range of input voltages, typically from 1.5V to 10V, and can deliver an output current up to 20mA. Its design includes features such as low quiescent current, high efficiency, and low output impedance, making it suitable for battery-operated devices.
The ICL7660CSA includes essential components like a voltage regulator, switching elements, and capacitors for charge storage. It operates without the need for external inductors, simplifying the design and reducing component count. Additionally, the IC has a built-in oscillator for driving the conversion process. Its small footprint and ability to function with minimal external components make it an attractive option for compact electronic designs requiring a negative voltage rail.
The ICL7660CSA includes essential components like a voltage regulator, switching elements, and capacitors for charge storage. It operates without the need for external inductors, simplifying the design and reducing component count. Additionally, the IC has a built-in oscillator for driving the conversion process. Its small footprint and ability to function with minimal external components make it an attractive option for compact electronic designs requiring a negative voltage rail.
Equivalent
The ICL7660CSA is a charge pump voltage converter primarily used to invert input voltages. Equivalent products to the ICL7660CSA include:
1. MAX1044: An Intersil/Maxim charge pump voltage inverter.
2. LTC1044: A Linear Technology charge pump voltage converter.
3. TC7660: A Microchip charge pump voltage inverter.
4. LM2660: A Texas Instruments charge pump voltage inverter.
These alternatives share similar functionalities, including voltage inversion and some offer extended temperature ranges or slight variations in voltage handling capabilities. Always check specific datasheets for compatibility.
1. MAX1044: An Intersil/Maxim charge pump voltage inverter.
2. LTC1044: A Linear Technology charge pump voltage converter.
3. TC7660: A Microchip charge pump voltage inverter.
4. LM2660: A Texas Instruments charge pump voltage inverter.
These alternatives share similar functionalities, including voltage inversion and some offer extended temperature ranges or slight variations in voltage handling capabilities. Always check specific datasheets for compatibility.
Features
The ICL7660CSA is a charge-pump voltage converter IC designed to invert, double, or split voltages with high efficiency. Some key features include:
1. Voltage Conversion: It can convert a positive input voltage to a negative output, effectively inverting the supply voltage.
2. Input Voltage Range: Operates with an input voltage range of 1.5V to 10V.
3. Low Operating Current: Features a low operating current of approximately 200µA, making it suitable for battery-powered applications.
4. High Efficiency: Offers high power efficiency, often greater than 95%, by minimizing power losses.
5. Output Current: Provides an output current capability of up to 10mA.
6. Low Voltage Drop: Has a low output voltage drop, enhancing performance in low-voltage applications.
7. Easy Implementation: Requires only two external capacitors for operation, simplifying circuit design.
8. Temperature Range: Typically operates over a temperature range of -40°C to +85°C, making it suitable for various environmental conditions.
9. Package Type: Available in a compact SOIC-8 package, facilitating space-saving designs.
These features make the ICL7660CSA ideal for applications requiring efficient voltage inversion or doubling in small form factors.
1. Voltage Conversion: It can convert a positive input voltage to a negative output, effectively inverting the supply voltage.
2. Input Voltage Range: Operates with an input voltage range of 1.5V to 10V.
3. Low Operating Current: Features a low operating current of approximately 200µA, making it suitable for battery-powered applications.
4. High Efficiency: Offers high power efficiency, often greater than 95%, by minimizing power losses.
5. Output Current: Provides an output current capability of up to 10mA.
6. Low Voltage Drop: Has a low output voltage drop, enhancing performance in low-voltage applications.
7. Easy Implementation: Requires only two external capacitors for operation, simplifying circuit design.
8. Temperature Range: Typically operates over a temperature range of -40°C to +85°C, making it suitable for various environmental conditions.
9. Package Type: Available in a compact SOIC-8 package, facilitating space-saving designs.
These features make the ICL7660CSA ideal for applications requiring efficient voltage inversion or doubling in small form factors.
Pinout
The ICL7660CSA is a charge pump voltage converter integrated circuit designed primarily for DC-DC voltage conversion. It is commonly used to generate a negative supply voltage from a positive supply. The ICL7660CSA typically comes in an 8-pin package.
Here is a brief description of the pin functions:
1. Pin 1 (V+): Positive supply voltage input.
2. Pin 2 (CAP+): Positive side of the charge pump capacitor.
3. Pin 3 (GND): Ground.
4. Pin 4 (CAP-): Negative side of the charge pump capacitor.
5. Pin 5 (VOUT): Negative voltage output.
6. Pin 6 (LV): Low voltage pin, used to increase efficiency at low input voltages.
7. Pin 7 (OSC): Oscillator control input, can be used to adjust the frequency.
8. Pin 8 (NC): No connection or not used in standard configurations.
This IC is popular for its simplicity and effectiveness in creating negative voltages from a positive supply, useful in operational amplifier circuits and other dual-supply applications.
Here is a brief description of the pin functions:
1. Pin 1 (V+): Positive supply voltage input.
2. Pin 2 (CAP+): Positive side of the charge pump capacitor.
3. Pin 3 (GND): Ground.
4. Pin 4 (CAP-): Negative side of the charge pump capacitor.
5. Pin 5 (VOUT): Negative voltage output.
6. Pin 6 (LV): Low voltage pin, used to increase efficiency at low input voltages.
7. Pin 7 (OSC): Oscillator control input, can be used to adjust the frequency.
8. Pin 8 (NC): No connection or not used in standard configurations.
This IC is popular for its simplicity and effectiveness in creating negative voltages from a positive supply, useful in operational amplifier circuits and other dual-supply applications.
Manufacturer
The ICL7660CSA is a voltage converter integrated circuit originally manufactured by Intersil Corporation. Intersil is a company that specializes in the design and manufacture of high-performance analog semiconductors. It provides solutions for power management and precision analog components across a variety of markets, including industrial, infrastructure, automotive, and aerospace.
In 2017, Intersil was acquired by Renesas Electronics Corporation, a Japanese semiconductor manufacturer. Renesas is a major player in the global semiconductor industry, focusing on microcontrollers, system-on-chip (SoC) solutions, and a wide range of analog and power devices. The acquisition aimed to strengthen Renesas's position in the automotive and industrial sectors by integrating Intersil's expertise in power management and precision analog technology. Thus, the ICL7660CSA may also be associated with Renesas following the acquisition.
In 2017, Intersil was acquired by Renesas Electronics Corporation, a Japanese semiconductor manufacturer. Renesas is a major player in the global semiconductor industry, focusing on microcontrollers, system-on-chip (SoC) solutions, and a wide range of analog and power devices. The acquisition aimed to strengthen Renesas's position in the automotive and industrial sectors by integrating Intersil's expertise in power management and precision analog technology. Thus, the ICL7660CSA may also be associated with Renesas following the acquisition.
Application
The ICL7660CSA is a charge pump voltage converter commonly used in applications requiring a negative supply voltage from a positive input. It is often utilized in digital and analog circuits for generating negative voltage rails. Key application areas include operational amplifier biasing, data acquisition systems, instrumentation, battery-powered devices, and LCD contrast adjustment. Its ability to efficiently produce a negative voltage output makes it suitable for low-power and portable designs. Additionally, it finds use in interfacing with sensors and other components that need dual power supplies.
Package
The ICL7660CSA is typically available in an 8-pin small outline integrated circuit (SOIC) package. This package is commonly used for surface mounting on printed circuit boards (PCBs) and is compact, making it suitable for applications where space is limited.
