ICL7660ESA+T

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 - Small package size - High efficiency

Package: SOIC-8

Essence: The ICL7660ESA+T 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 ICL7660ESA+T is available in a standard SOIC-8 package. It is typically sold in reels containing 2500 units.

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 Current: 120µA (typical)
• Switching Frequency: 10kHz (typical)

Detailed Pin Configuration

The ICL7660ESA+T has eight pins arranged as follows:

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| | --| Vout GND |-- Pin 1: Ground (GND) --| Vin C1 |-- Pin 2: Input Voltage (Vin) --| OSC1 C2 |-- Pin 3: Oscillator Timing Capacitor (C1) --| OSC2 C3 |-- Pin 4: Oscillator Timing Capacitor (C2) --| C- C4 |-- Pin 5: Flying Capacitor Negative Terminal (C-) --| C+ Vout|-- Pin 6: Flying Capacitor Positive Terminal (C+) --| V- V+ |-- Pin 7: Negative Output Voltage (V-) --| GND V+ |-- Pin 8: Positive Input Voltage (V+) |___________| ```

Functional Features

1. Voltage Conversion: The ICL7660ESA+T efficiently converts a positive input voltage to a negative output voltage, allowing for the creation of a negative voltage source in electronic circuits.

2. Low Power Consumption: This IC consumes minimal power, making it suitable for battery-powered applications and energy-efficient designs.

3. Wide Operating Voltage Range: It can operate with input voltages ranging from 1.5V to 12V, providing flexibility in various electronic systems.

4. Small Package Size: The SOIC-8 package offers a compact form factor, enabling space-saving integration into circuit boards with limited real estate.

Advantages and Disadvantages

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

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

Working Principles

The ICL7660ESA+T utilizes charge pumps to generate the negative output voltage. It employs an internal oscillator to control the switching of capacitors, which results in the desired voltage conversion. By regulating the timing and charging/discharging of capacitors, the IC produces a stable negative voltage output.

Detailed Application Field Plans

The ICL7660ESA+T finds applications in various fields, including:

1. Portable Electronics: It is used in devices such as smartphones, tablets, and portable media players to provide a negative voltage supply for LCD displays, audio amplifiers, and other components.

2. Industrial Automation: The IC is employed in industrial control systems to generate negative voltages required for analog signal conditioning, motor control, and sensor interfaces.

3. Automotive Electronics: It is utilized in automotive applications to create negative voltage rails for powering sensors, actuators, and communication modules.

4. Telecommunications: The ICL7660ESA+T is used in telecommunication equipment to generate negative voltages for audio amplification, signal processing, and power management circuits.

Detailed and Complete Alternative Models

1. MAX660CPA+: This IC offers similar functionality to the ICL7660ESA+T and is available in a DIP-8 package.

2. LTC1044CN8: It is another alternative with comparable specifications and comes in an 8-pin PDIP package.

3. MC34063AP1G: This IC provides voltage conversion capabilities and is available in a TO-220 package.

4. TPS60403DBVR: It is a compact alternative with a small SOT-23 package and offers efficient voltage conversion.

These alternative models can be considered based on specific application requirements and availability.

In conclusion, the ICL7660ESA+T is a versatile voltage converter IC that efficiently generates negative output voltages from positive input voltages