TC7660HEOA

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Converter
• Characteristics:
  • Converts a positive input voltage to a corresponding negative output voltage
  • Low power consumption
  • High efficiency
  • Small package size
• Package: SOIC-8
• Essence: Voltage conversion from positive to negative
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 1.5V to 10V
• Output Voltage Range: -1.5V to -10V
• Output Current: Up to 20mA
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage: 1.5V to 10V
• Quiescent Current: 120µA (typical)

Detailed Pin Configuration

The TC7660HEOA IC has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | GND | Ground | | 2 | VOUT | Negative Output Voltage | | 3 | VIN- | Negative Input Voltage | | 4 | VIN+ | Positive Input Voltage | | 5 | OSC | Oscillator Control | | 6 | C1- | Negative Terminal of Capacitor C1 | | 7 | C1+ | Positive Terminal of Capacitor C1 | | 8 | VDD | Positive Power Supply |

Functional Features

• Voltage Conversion: The TC7660HEOA converts a positive input voltage to a corresponding negative output voltage.
• Oscillator Control: The oscillator control pin (OSC) allows for frequency adjustment, enabling customization of the output waveform.
• Low Power Consumption: The IC operates with low quiescent current, making it suitable for battery-powered applications.
• High Efficiency: The TC7660HEOA exhibits high efficiency in voltage conversion, minimizing power losses.

Advantages and Disadvantages

Advantages: - Compact Size: The small package size of the TC7660HEOA makes it suitable for space-constrained applications. - Wide Input Voltage Range: The IC can accept input voltages ranging from 1.5V to 10V, providing flexibility in various scenarios. - Low Power Consumption: The low quiescent current ensures efficient power usage.

Disadvantages: - Limited Output Current: The maximum output current of 20mA may not be sufficient for high-power applications. - Single Functionality: The TC7660HEOA is designed specifically for voltage conversion and does not offer additional features.

Working Principles

The TC7660HEOA utilizes charge pumps to convert a positive input voltage to a corresponding negative output voltage. It employs an internal oscillator to control the switching frequency, which drives the charge pump circuitry. By regulating the timing and switching of the charge pump capacitors, the IC generates the desired negative output voltage.

Detailed Application Field Plans

The TC7660HEOA finds applications in various fields, including but not limited to: 1. Portable Electronics: Used in devices such as smartphones, tablets, and portable audio players to generate negative supply voltages required by certain components. 2. Industrial Automation: Employed in control systems and instrumentation where negative voltages are necessary for specific circuitry. 3. Automotive Electronics: Utilized in automotive applications to provide negative voltages for sensors, actuators, and other electronic components. 4. Telecommunications: Integrated into communication equipment to generate negative voltages for specific modules or subsystems.

Detailed and Complete Alternative Models

1. ICL7660SIPA: Similar to TC7660HEOA, this IC offers voltage conversion from positive to negative with a wide input voltage range and low power consumption. It comes in a DIP-8 package.
2. MAX660CPA: Another alternative, this IC provides voltage conversion capabilities along with an adjustable oscillator frequency. It is available in a DIP-8 package.

(Note: The above alternative models are provided for reference and may have different specifications and pin configurations. Please refer to the respective datasheets for detailed information.)

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