ICL7660SIBAT

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 conversion

Package: SOIC (Small Outline Integrated Circuit)

Essence: The ICL7660SIBAT 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 ICL7660SIBAT is available in a standard SOIC package and is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 1.5V to 12V
• Output Voltage Range: -1.5V to -12V
• Maximum Output Current: 10mA
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Rejection Ratio: 60dB
• Switching Frequency: 10kHz

Detailed Pin Configuration

The ICL7660SIBAT has 8 pins, which are assigned specific functions:

1. GND: Ground reference for the IC.
2. V+ (Pin 1): Positive supply voltage input.
3. OSC (Pin 2): Oscillator frequency control pin.
4. VOUT (Pin 3): Negative output voltage.
5. CAP+ (Pin 4): Positive terminal of the external flying capacitor.
6. CAP- (Pin 5): Negative terminal of the external flying capacitor.
7. C1- (Pin 6): Negative terminal of the charge pump capacitor.
8. C1+ (Pin 7): Positive terminal of the charge pump capacitor.

Functional Features

• Voltage Conversion: The ICL7660SIBAT efficiently converts a positive input voltage to a negative output voltage.
• Low Power Consumption: It operates with low power consumption, making it suitable for battery-powered applications.
• Wide Operating Voltage Range: The IC can accept input voltages ranging from 1.5V to 12V, providing flexibility in various electronic circuits.
• Compact Package Size: The SOIC package ensures a compact footprint, saving space on the circuit board.
• High Efficiency Conversion: The ICL7660SIBAT offers high conversion efficiency, minimizing power losses during voltage conversion.

Advantages and Disadvantages

Advantages: - Provides a negative voltage source without the need for additional components. - Low power consumption extends battery life in portable devices. - Wide operating voltage range allows compatibility with different power sources. - Compact package size saves space in electronic designs. - High efficiency conversion reduces power dissipation.

Disadvantages: - Limited maximum output current of 10mA may not be sufficient for certain applications. - Requires external capacitors for proper operation. - May introduce some noise or ripple in the output voltage.

Working Principles

The ICL7660SIBAT utilizes a charge pump voltage converter circuit to generate a negative output voltage. It employs an internal oscillator to control the switching of capacitors, which results in the desired voltage conversion. By using a combination of capacitors and switches, the IC effectively doubles the input voltage magnitude and inverts its polarity to produce a negative output voltage.

Detailed Application Field Plans

The ICL7660SIBAT finds application in various electronic systems, including:

1. Audio Amplifiers: It can provide a negative supply voltage required by audio amplifier circuits.
2. LCD Displays: LCD modules often require a negative voltage source for biasing purposes.
3. Sensor Interfaces: Some sensors operate with a negative supply voltage, which can be generated using this IC.
4. Data Converters: Certain analog-to-digital converters and digital-to-analog converters require a negative reference voltage.

Detailed and Complete Alternative Models

1. MAX660CPA: A similar voltage converter IC with comparable specifications and pin configuration.
2. LTC1044: Another alternative offering voltage conversion capabilities with different package options.
3. ICL7660CPA: An alternative model from the same manufacturer, offering similar functionality in a different package.

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

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