ICL7660ACBA

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: Ceramic Dual-In-Line Package (DIP)

Essence: The ICL7660ACBA 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 ICL7660ACBA is available in a DIP package and is typically sold in reels or tubes containing multiple 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
• Quiescent Current: 120µA

Pin Configuration

The ICL7660ACBA has eight pins arranged as follows:

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| | --| Vout Vin |-- Pin 1: Input Voltage (Vin) --| Gnd C1 |-- Pin 2: Ground (Gnd) --| C2 C3 |-- Pin 3: Capacitor 3 (C3) --| C4 C5 |-- Pin 4: Capacitor 5 (C5) --| C6 C7 |-- Pin 5: Capacitor 7 (C7) --| C8 C9 |-- Pin 6: Capacitor 9 (C9) --| V- V+ |-- Pin 7: Negative Output Voltage (V-) --| Osc N/C |-- Pin 8: Oscillator (Osc) / No Connection (N/C) |___________| ```

Functional Features

• Voltage conversion from positive to negative
• Low power consumption for efficient operation
• Wide operating voltage range allows flexibility in various applications
• Compact package size enables space-saving designs
• High efficiency ensures minimal power loss during conversion

Advantages and Disadvantages

Advantages: - Provides a negative voltage source without the need for additional components - Low quiescent current minimizes power consumption - Suitable for battery-powered devices due to wide input voltage range - Compact size makes it ideal for small electronic devices

Disadvantages: - Limited output current capacity (10mA) - Requires external capacitors for proper operation - Not suitable for high-power applications

Working Principles

The ICL7660ACBA utilizes charge pumps to convert the input voltage into a negative output voltage. It employs an internal oscillator to control the charge and discharge cycles of the capacitors connected to its pins. By switching the capacitors' states, the IC generates a negative voltage that is proportional to the input voltage.

Detailed Application Field Plans

The ICL7660ACBA finds application in various fields, including:

1. Audio Equipment: Used to generate a negative voltage supply for audio amplifiers and mixers.
2. LCD Displays: Provides a negative bias voltage required for driving liquid crystal displays.
3. Sensor Circuits: Utilized in circuits where sensors require a negative voltage reference.
4. Battery-Powered Devices: Enables the use of negative voltage without draining excessive power from batteries.
5. Industrial Control Systems: Used in control circuits that require a negative voltage source.

Detailed and Complete Alternative Models

1. MAX660: Similar voltage converter IC with higher output current capacity (50mA).
2. LT1054: Voltage converter IC with adjustable output voltage and higher efficiency.
3. TC7660: Low-power voltage converter IC with a wide input voltage range.

These alternative models offer similar functionality to the ICL7660ACBA but may have different specifications or additional features.

In conclusion, the ICL7660ACBA is an integrated circuit that serves as a voltage converter, generating a negative output voltage from a positive input voltage. Its compact size, low power consumption, and wide operating voltage range make it suitable for various applications in audio equipment, LCD displays, sensor circuits, battery-powered devices, and industrial control systems. While it has limitations in terms of output current capacity and external capacitor requirements, alternative models such as MAX660, LT1054, and TC7660 provide options with different specifications and features.