MAX1044ESA

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MAX1044ESA

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IC REG CHARG PUMP INV 20MA 8SOIC

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Especificações

Atributo Valor
Package / Case Tube,Tube
Part Status Obsolete
Function Ratiometric
Output Configuration Positive or Negative
Topology Charge Pump
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 1.5V
Voltage - Input (Max) 10V
Voltage - Output (Min/Fixed) -Vin, nVin, Vin/2
Current - Output 20mA
Frequency - Switching 10kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount

Visão Geral

Description

The MAX1044ESA is a voltage converter integrated circuit produced by Maxim Integrated. It is primarily used for generating higher or negative voltages from a single positive input voltage, making it useful for applications requiring dual power supplies from a single battery. The device operates as a charge pump, using capacitors for energy storage and transfer, allowing it to double the input voltage or invert it, making it versatile for different power management needs.
Key features include low supply current, typically around 180 µA, and the ability to operate over a wide voltage range (1.5V to 10V). The MAX1044ESA also includes an on-chip oscillator and can achieve up to 90% efficiency, depending on the configuration and load conditions.
The IC is housed in an 8-pin SOIC package (Small Outline Integrated Circuit), making it suitable for compact designs. Its ease of use, with minimal external components required, and robust performance make it popular in battery-powered devices, portable equipment, and other applications where efficient voltage conversion is essential.

Equivalent

The MAX1044ESA is a charge pump voltage converter. Equivalent products include:
1. ICL7660 - A common equivalent often used in voltage doubling/inverting applications.
2. TC7660 - Similar functionality for voltage conversion applications.
3. LTC1044 - Offers similar charge pump capabilities.
4. ADM660 - Another compatible charge pump converter.
5. MC7660 - Functions similarly in voltage conversion tasks.
These alternatives can match the MAX1044ESA's performance in many low-power applications. Always check specifications for compatibility with your project.

Features

The MAX1044ESA is a voltage converter integrated circuit that offers the following key features:
1. Voltage Conversion: It can perform voltage doubling, inverting, or other charge-pump functions, which are useful in applications requiring increased or inverted voltages from a single supply rail.

2. Input Voltage Range: It operates over a wide input voltage range, typically from 1.5V to 11V, making it versatile for various applications.
3. Low Quiescent Current: The device is designed for low power consumption with a typical quiescent current of 120µA, enhancing its suitability for battery-powered applications.
4. High Efficiency: It achieves high efficiency through its charge pump technology, minimizing power losses.
5. Oscillator Frequency: The MAX1044ESA has an internal oscillator with a frequency of around 10kHz, which can be increased to about 35kHz with an external capacitor for reduced ripple or smaller external component size.
6. Package: It is offered in an 8-pin SOIC package, which is compact and easy to integrate into circuit boards.
7. Temperature Range: The device operates over a temperature range of 0°C to +70°C, suitable for commercial applications.

Pinout

The MAX1044ESA is a CMOS switched-capacitor voltage converter, commonly used for voltage doubling or inverting applications. It is an 8-pin device, and its pin configuration and functions are as follows:
1. Pin 1 (CAP+): Positive terminal for the charge-pump capacitor.
2. Pin 2 (GND): Ground connection.
3. Pin 3 (CAP-): Negative terminal for the charge-pump capacitor.
4. Pin 4 (LV): Low-voltage operation pin (connect to GND for low-voltage mode).
5. Pin 5 (OSC): Oscillator control pin. Left open for internal frequency or connected to an external capacitor for lower frequency operation.
6. Pin 6 (V+): Positive voltage input.
7. Pin 7 (OUT): Output pin. Provides inverted or doubled voltage.
8. Pin 8 (V-): Negative voltage output when used in inverter mode.
The MAX1044 can efficiently convert and regulate voltages in various low-power applications, making it versatile for battery-powered devices.

Manufacturer

The MAX1044ESA is manufactured by Maxim Integrated. Maxim Integrated is a company that specializes in designing and manufacturing analog and mixed-signal integrated circuits. Founded in 1983 and headquartered in San Jose, California, Maxim Integrated provides a wide range of products that serve various markets, including automotive, industrial, communications, consumer, and computing. The company is known for its innovative solutions in power management, interface, and signal processing, among other areas. In 2021, Maxim Integrated was acquired by Analog Devices, Inc., another prominent player in the semiconductor industry. This acquisition aimed to enhance Analog Devices' product portfolio and strengthen its position in the global market.

Application

The MAX1044ESA is a voltage converter IC primarily used in applications requiring a voltage doubling, inverting, or splitting capability. It is suitable for battery-operated devices, enabling efficient power management by generating higher or lower voltage levels from a single battery cell. Common application areas include LCD biasing, operational amplifier power supplies, and generating negative voltages for analog circuits. Additionally, it can be used in data acquisition systems, portable instruments, and sensor systems where compact and efficient voltage conversion is crucial. Its low quiescent current and wide input voltage range make it ideal for a variety of low-power and portable electronic devices.

Package

The MAX1044ESA is an integrated circuit that comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. This package type is commonly used in surface-mount technology applications.

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