LM2660MX

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LM2660MX

IC REG CHARGE PUMP INV 8SOIC

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Obsolete
Function Ratiometric
OutputConfiguration Positive or Negative
Topology Charge Pump
OutputType Fixed
NumberofOutputs 1
Voltage-Input(Min) 1.5V
Voltage-Input(Max) 5.5V
Voltage-Output(Min/Fixed) -Vin, 2Vin, Vin/2
Current-Output 100mA
Frequency-Switching 5kHz, 40kHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 85°C (TJ)
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

概述

Description

The LM2660MX is a charge-pump voltage converter IC designed by Texas Instruments. It is primarily used to invert or double the input voltage, making it useful in applications requiring a negative supply voltage or higher voltage levels without inductors. The IC operates over an input voltage range of 1.5V to 5.5V and can deliver output currents up to 100 mA, depending on the configuration. The charge-pump principle allows it to efficiently convert voltage by alternating between charging and discharging capacitors.
The LM2660 features a simple design with minimal external components, typically requiring just two capacitors for operation. It also includes an on-chip oscillator and can function at switching frequencies of 10 kHz or 80 kHz, based on the configuration. Key features include low quiescent current, low noise, and high efficiency. The SOIC-8 (Small Outline Integrated Circuit) package makes it suitable for compact designs. This IC is commonly used in battery-powered applications, portable devices, and any circuits needing dual supply voltages from a single battery source. Its versatility and ease of use make it a popular choice for designers seeking efficient voltage conversion solutions.

Features

The LM2660MX is a charge pump voltage converter that offers efficient voltage inversion and regulation capabilities. Key features include:
1. Voltage Conversion: It can invert input voltages ranging from 1.5V to 5.5V, making it suitable for battery-powered applications.
2. Output Current: Capable of delivering up to 100mA of output current, which suffices for low-power applications.
3. Efficiency: Typical power conversion efficiency is around 90%, which helps in minimizing power loss and heat generation.
4. Low Operating Current: The device consumes a low quiescent current, contributing to extended battery life in portable applications.
5. Compact Package: Available in a small 8-pin SOIC package, aiding space-constrained designs.
6. Low Noise Operation: Designed to minimize output voltage ripple and switching noise.
7. Operating Temperature Range: Functions effectively within a temperature range of -40°C to +85°C.
8. Protection Features: Includes short-circuit protection to safeguard against potential faults.
Overall, the LM2660MX is well-suited for applications requiring negative voltage generation in compact, energy-efficient designs.

Package

The LM2660MX is a charge pump voltage converter integrated circuit typically available in a SOIC-8 (Small Outline Integrated Circuit) package. This package type is compact and suitable for surface mounting on printed circuit boards.

Pinout

The LM2660MX is a switched capacitor voltage converter IC, often used for applications requiring voltage inversion or voltage doubling. It is typically housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here's a brief overview of its pin functions:
1. V+ (Pin 1): Positive supply voltage input.
2. CAP+ (Pin 2): Positive terminal for the charge pump capacitor.
3. GND (Pin 3): Ground pin.
4. CAP- (Pin 4): Negative terminal for the charge pump capacitor.
5. OUT (Pin 5): Output voltage pin.
6. LV (Pin 6): Logic input for low-voltage operation.
7. OSC (Pin 7): Optional external oscillator input.
8. V- (Pin 8): Negative supply voltage pin, typically connected to GND for inverter applications.
The LM2660MX can be used for generating a negative voltage from a positive input (voltage inverter) or doubling the input voltage (voltage doubler). It is frequently used in portable electronics due to its compact size and efficiency.

Manufacturer

The LM2660MX is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic products. They are known for their development of integrated circuits and other components used in electronics, such as analog chips, digital signal processors, and microcontrollers. TI's products serve various industries, including consumer electronics, automotive, industrial, and communications. The company is recognized for its innovation and extensive contribution to advancing technology in the semiconductor industry.

Application

The LM2660MX is a charge-pump voltage converter used primarily in applications requiring efficient voltage inversion or doubling. Its primary application areas include powering LCD displays, medical instrumentation, battery-powered devices, and portable electronics. It is favored in scenarios where low noise and compact design are essential, offering benefits like minimal external components and low quiescent current. The LM2660MX is suitable for both consumer electronics and industrial applications where space and power efficiency are critical.

Equivalent

The LM2660MX is a switched-capacitor voltage converter typically used to invert or double voltage. Equivalent products include the MAX660, LTC1044, ICL7660, and TC7660. These chips also serve similar functions, offering voltage inversion or doubling capabilities in various electronic applications. Always check the datasheet for specific electrical characteristics and pin compatibility when considering direct replacements.

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