MAX1044EPA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Converter
• Characteristics: Low-power, voltage-inverting charge pump
• Package: 8-pin PDIP (Plastic Dual In-line Package)
• Essence: Converts positive voltage to negative voltage
• Packaging/Quantity: Tube packaging, 25 units per tube

Specifications

• Input Voltage Range: +1.5V to +10V
• Output Voltage Range: -1.5V to -10V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 80µA (typical)
• Switching Frequency: 10kHz (typical)

Detailed Pin Configuration

The MAX1044EPA has the following pin configuration:

1. GND: Ground reference
2. V+ (IN): Positive input voltage
3. C1-: Negative terminal of flying capacitor 1
4. C1+: Positive terminal of flying capacitor 1
5. C2+: Positive terminal of flying capacitor 2
6. C2-: Negative terminal of flying capacitor 2
7. V- (OUT): Negative output voltage
8. SHDN: Shutdown control input

Functional Features

• Provides a simple and efficient way to generate a negative voltage from a positive input voltage
• Requires only two external capacitors for operation
• Low quiescent current makes it suitable for battery-powered applications
• Can be used as a voltage doubler or inverter

Advantages and Disadvantages

Advantages: - Compact and easy-to-use IC package - Low power consumption - Wide input and output voltage range - Simple external component requirements

Disadvantages: - Limited output current capability - Requires external capacitors for operation

Working Principles

The MAX1044EPA is a voltage converter based on the charge pump principle. It uses two external capacitors to store and transfer charge, allowing it to generate a negative voltage from a positive input voltage. The internal circuitry of the IC switches the charge between the capacitors, effectively inverting the polarity of the output voltage.

Detailed Application Field Plans

The MAX1044EPA can be used in various applications, including:

1. Portable electronic devices: Provides a negative voltage supply for LCD displays, audio amplifiers, or other components.
2. Industrial control systems: Generates a negative voltage for powering analog sensors or signal conditioning circuits.
3. Automotive electronics: Used in automotive systems where a negative voltage is required, such as in audio systems or sensor interfaces.

Detailed and Complete Alternative Models

1. ICL7660CPA: Similar voltage converter IC with comparable specifications and pin configuration.
2. LTC1044CN8: Another alternative with extended temperature range and higher output current capability.
3. MAX660CPA: Offers additional features like overvoltage protection and adjustable output voltage.

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