ICL7660ISA+ - 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 - High efficiency - Wide operating voltage range

Package: SOIC (Small Outline Integrated Circuit)

Essence: The ICL7660ISA+ is a voltage converter IC that generates a negative voltage from a positive input voltage.

Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 1.5V to 12V
• Output Voltage Range: -1.5V to -12V
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Rejection Ratio: 70dB
• Switching Frequency: 10kHz

Detailed Pin Configuration

The ICL7660ISA+ has eight pins arranged as follows:

```

---

| | | U1 | |___________|

Pin Configuration:

1. GND (Ground)
2. VOUT (Negative Output Voltage)
3. VIN- (Negative Input Voltage)
4. VIN+ (Positive Input Voltage)
5. OSC (Oscillator Frequency Control)
6. C1- (External Capacitor Connection)
7. C1+ (External Capacitor Connection)
8. V+ (Positive Power Supply) ```

Functional Features

• Voltage conversion from positive to negative
• Low quiescent current
• Over-temperature protection
• Short-circuit protection
• Built-in oscillator for frequency control

Advantages and Disadvantages

Advantages: - Efficient voltage conversion - Wide operating voltage range - Low power consumption - Compact SOIC package

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

Working Principles

The ICL7660ISA+ utilizes charge pumps to convert a positive input voltage into a negative output voltage. It employs an internal oscillator to control the switching frequency, which drives the charge pump circuitry. The converted negative voltage is then available at the VOUT pin.

Detailed Application Field Plans

The ICL7660ISA+ finds applications in various fields, including:

1. Portable Electronics:

   • Powering LCD displays
   • Generating negative bias voltages for audio amplifiers

2. Industrial Automation:

   • Providing negative supply voltage for analog sensors and transducers

3. Automotive Electronics:

   • Generating negative bias voltages for automotive audio systems

4. Telecommunications:

   • Voltage conversion for telecommunication equipment

5. Medical Devices:

   • Negative voltage generation for medical imaging devices

Detailed and Complete Alternative Models

1. MAX660CPA+: Similar voltage converter IC with a DIP (Dual Inline Package) package.
2. LTC1044CN8: Voltage converter IC with improved specifications and higher output current capability.
3. ICL7660CBAZ-T: Surface mount voltage converter IC with extended temperature range.

Note: This is not an exhaustive list of alternative models, but provides a few examples.

---

Word Count: 413 words