ICL7660CUA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Converter

Characteristics: - Converts input voltage to a negative output voltage - Low power consumption - Wide operating voltage range - Compact package size - High efficiency

Package: 8-pin SOIC (Small Outline Integrated Circuit)

Essence: The ICL7660CUA+ is a voltage converter IC that generates a negative output voltage from a positive input voltage. It is commonly used in electronic circuits where a negative voltage source is required.

Packaging/Quantity: The ICL7660CUA+ is available in tape and reel packaging, with 250 units per reel.

Specifications

• Input Voltage Range: 1.5V to 10V
• Output Voltage Range: -1.5V to -10V
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +85°C
• Supply Current: 160µA (typical)
• Switching Frequency: 10kHz (typical)

Detailed Pin Configuration

The ICL7660CUA+ has the following pin configuration:

1. GND (Ground)
2. V+ (Positive Power Supply)
3. OSC (Oscillator Frequency Control)
4. VOUT (Negative Output Voltage)
5. CAP- (Negative Charge Pump Capacitor)
6. CAP+ (Positive Charge Pump Capacitor)
7. VIN (Positive Input Voltage)
8. SHDN (Shutdown Control)

Functional Features

• Voltage Conversion: The ICL7660CUA+ efficiently converts a positive input voltage into a negative output voltage.
• Oscillator Frequency Control: The OSC pin allows the user to adjust the switching frequency of the IC.
• Shutdown Control: The SHDN pin can be used to disable the IC, reducing power consumption.

Advantages and Disadvantages

Advantages: - Low power consumption - Wide operating voltage range - Compact package size - High efficiency

Disadvantages: - Limited output current capacity (up to 100mA) - Requires external capacitors for proper operation

Working Principles

The ICL7660CUA+ utilizes a charge pump voltage converter circuit to generate a negative output voltage. It uses an internal oscillator to control the switching of capacitors, which results in the conversion of the input voltage into a negative output voltage.

Detailed Application Field Plans

The ICL7660CUA+ finds applications in various electronic circuits, including: 1. Audio Amplifiers: Provides a negative supply voltage for audio amplifiers, allowing them to operate with both positive and negative signals. 2. LCD Displays: Generates a negative voltage required for driving LCD displays. 3. Sensor Interfaces: Converts positive sensor outputs to negative voltages for compatibility with certain interface circuits. 4. Data Converters: Enables the use of bipolar power supplies in data converter circuits.

Detailed and Complete Alternative Models

1. MAX660CPA+: Similar voltage converter IC with slightly different specifications.
2. LTC1044CN8: Voltage converter IC with higher output current capacity.
3. ICL7660SCPAZ: Surface-mount version of the ICL7660CUA+ with similar characteristics.

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