MAX1044CSA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Converter
• Characteristics: High efficiency, low power consumption
• Package: Surface Mount Technology (SMT)
• Essence: Charge Pump Voltage Inverter
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 1.5V to 10V
• Output Voltage Range: -1.5V to -10V
• Output Current: Up to 20mA
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage: 2.5V to 12V
• Quiescent Current: 120µA (typical)

Pin Configuration

The MAX1044CSA+T has a total of 8 pins:

1. GND: Ground pin
2. VOUT: Negative voltage output
3. VIN: Positive voltage input
4. OSC: Oscillator frequency control
5. C1-: Negative charge pump flying capacitor connection
6. C1+: Positive charge pump flying capacitor connection
7. C2+: Positive charge pump storage capacitor connection
8. C2-: Negative charge pump storage capacitor connection

Functional Features

• Voltage conversion from positive to negative
• High efficiency charge pump operation
• Low power consumption
• Wide input voltage range
• Compact surface mount package

Advantages

• Eliminates the need for additional negative power supply
• Saves board space due to small package size
• High efficiency results in less power dissipation
• Suitable for battery-powered applications

Disadvantages

• Limited output current capacity
• Requires external capacitors for proper operation
• Not suitable for high-power applications

Working Principles

The MAX1044CSA+T is a charge pump voltage inverter that converts a positive input voltage into a negative output voltage. It utilizes a switched-capacitor technique to generate the negative voltage, eliminating the need for a separate negative power supply. The charge pump circuitry efficiently transfers charge from the input capacitor to the output capacitor, resulting in a negative voltage at the output pin.

Detailed Application Field Plans

The MAX1044CSA+T finds applications in various fields, including:

1. Portable electronic devices: Used to generate a negative voltage for LCD displays, audio amplifiers, and other components.
2. Industrial automation: Provides a negative voltage source for control circuits and sensors.
3. Automotive electronics: Used in automotive systems requiring negative voltage, such as lighting controls and motor drivers.
4. Telecommunications: Enables the generation of negative voltages for telecommunication equipment, such as modems and routers.

Detailed Alternative Models

1. ICL7660CPA: Similar charge pump voltage inverter with comparable specifications.
2. LTC1044: Low-power voltage converter with integrated charge pump.
3. MAX660CPA: Voltage converter with higher output current capability.

Note: This is not an exhaustive list, and there are several other alternative models available in the market.

In conclusion, the MAX1044CSA+T is a versatile voltage converter IC that efficiently generates a negative voltage from a positive input. Its compact package, high efficiency, and wide range of applications make it a popular choice in various industries. However, its limited output current capacity and external capacitor requirement should be considered when selecting this device for specific applications.