LMC7660IMX

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LMC7660IMX

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IC REG CHARGE PUMP INV 8SOIC

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Thông số kỹ thuật

thuộc tính Giá trị
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Not For New Designs
Function Ratiometric
OutputConfiguration Negative
Topology Charge Pump
OutputType Fixed
NumberofOutputs 1
Voltage-Input(Min) 1.5V
Voltage-Input(Max) 10V
Voltage-Output(Min/Fixed) -Vin
Frequency-Switching 10kHz
SynchronousRectifier No
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

Tổng quan

Description

The LMC7660IMX is a CMOS voltage converter integrated circuit designed to invert input voltages. Manufactured by Texas Instruments, it is part of the LMC7660 series and is commonly used in applications requiring voltage inversion from a positive to a negative supply. The device operates over a wide input voltage range, typically from 1.5V to 10V, making it versatile for various battery-powered and low-power applications.
The LMC7660IMX is efficient, requiring only two external capacitors for operation, and boasts a low quiescent current, enhancing its suitability for portable devices. It features a typical power conversion efficiency of up to 98% and can deliver output currents up to 20mA. The device also includes a frequency boost feature to minimize output voltage ripple and improve performance.
Packaged in an 8-lead SOIC (Small Outline Integrated Circuit) package, the LMC7660IMX is designed for ease of use and integration within electronic circuits, providing a reliable solution for generating negative supply voltages.

Equivalent

The LMC7660IMX is a CMOS voltage converter, often used as a charge pump to invert voltages. Equivalent products include the ICL7660, MAX1044, LT1044, TC7660, and MC7660. These components are generally pin-compatible and provide similar functionality, such as voltage inversion and doubling. However, it's essential to check the specific datasheets for any differences in electrical characteristics or package options to ensure they meet the requirements of your application.

Features

The LMC7660IMX is a CMOS voltage converter designed to efficiently generate a negative voltage from a positive input. Key features include:
1. Voltage Conversion: It converts a positive input voltage to a negative output voltage, effectively doubling the voltage range available for applications.

2. Efficiency: The device operates with high efficiency, often exceeding 95%, making it suitable for battery-powered systems.
3. Low Operating Current: The typical current consumption is around 100 µA, conserving power in low-power applications.
4. Wide Input Voltage Range: It supports input voltages from 1.5V to 10V, offering flexibility for various power supply scenarios.
5. Output Current Capability: It can source up to 20 mA of output current, fitting small to medium power demands.
6. Low Voltage Drop: The device features a low voltage drop of typically 0.1V, enhancing performance in low voltage applications.
7. Compact Package: Available in small MSOP-8 and other package options, it is suitable for space-constrained designs.
8. External Component Count: Minimal external components are required, simplifying the overall design process.
These features make the LMC7660IMX a versatile choice for applications requiring a simple, efficient, and compact voltage inverter.

Pinout

The LMC7660IMX is a CMOS voltage converter, typically used for voltage inversion, doubling, or splitting. It is available in an 8-pin configuration. Here is a concise description of its pin count and functions:
1. Pin 1 (CAP+): Connect to the positive terminal of the charge pump capacitor.
2. Pin 2 (GND): Ground pin.
3. Pin 3 (LV): Low voltage pin, used to improve performance at lower voltages.
4. Pin 4 (CAP-): Connect to the negative terminal of the charge pump capacitor.
5. Pin 5 (VOUT): Output voltage pin, provides the inverted voltage.
6. Pin 6 (OSC): Oscillator control pin, used to adjust the frequency with an external capacitor if needed.
7. Pin 7 (NC): No connection, typically not used.
8. Pin 8 (VIN): Input voltage pin, where the supply voltage is connected.
The LMC7660IMX is designed to work with input voltages from 1.5V to 10V and can provide an output that is the negative of the input voltage with a maximum output current of around 20 mA.

Manufacturer

The LMC7660IMX is manufactured by Texas Instruments (TI). Texas Instruments is a multinational technology company that designs and manufactures semiconductors and various integrated circuits. It is known for its focus on analog technology, embedded processors, and digital light processing (DLP) technology. The company serves a broad range of industries, including automotive, industrial, consumer electronics, and communications equipment. TI is a leading player in the semiconductor industry, providing products that enable customers to create innovative solutions for a wide array of technological applications.

Application

The LMC7660IMX is a charge pump voltage converter primarily used for generating negative supply voltages. It finds application in:
1. Analog and Mixed-Signal Systems: Provides negative voltage for operational amplifiers and data converters.
2. Battery-Powered Devices: Efficiently generates negative voltages with minimal power consumption.
3. LCD Biasing: Supplies the necessary negative voltage for LCD contrast adjustment.
4. Portable Instruments: Offers compact and efficient power solutions.
5. Sensor Interfaces: Powers sensors requiring dual supply voltages.
6. Communication Devices: Used in circuits where negative voltage is needed for biasing or signal processing.
Its versatility makes it suitable for a variety of low-power and portable electronic applications.

Package

The LMC7660IMX is a charge pump voltage converter IC that typically comes in a SOIC-8 (Small Outline Integrated Circuit) package. This package type is compact and suitable for surface-mount technology.

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