TC7660EPA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Converter
• Characteristics: Low-power, voltage doubling/inverting, charge pump
• Package: 8-pin PDIP (Plastic Dual In-line Package)
• Essence: Converts input voltage to a higher or lower output voltage
• Packaging/Quantity: Available in tubes of 25 units

Specifications

• Input Voltage Range: 1.5V to 10V
• Output Voltage Range: -1.5V to -10V (inverting mode), 3V to 20V (doubling mode)
• Output Current: Up to 20mA
• Operating Temperature Range: -40°C to +85°C
• Supply Current: 120µA typical
• Switching Frequency: 12kHz typical

Pin Configuration

The TC7660EPA has the following pin configuration:

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| | --| V+ GND |-- Pin 1: Positive Supply Voltage (V+) --| VIN VOUT|-- Pin 2: Input Voltage (VIN) / Output Voltage (VOUT) --| OSC C1 |-- Pin 3: Oscillator (OSC) / External Capacitor (C1) --| C2 C3 |-- Pin 4: External Capacitor (C2) / External Capacitor (C3) --| C4 C5 |-- Pin 5: External Capacitor (C4) / External Capacitor (C5) --| C6 C7 |-- Pin 6: External Capacitor (C6) / External Capacitor (C7) --| C8 GND |-- Pin 7: External Capacitor (C8) / Ground (GND) --| V- GND |-- Pin 8: Negative Supply Voltage (V-) / Ground (GND) |___________| ```

Functional Features

The TC7660EPA is a voltage converter IC that can operate in two modes: voltage doubling and voltage inverting. It utilizes a charge pump architecture to convert the input voltage to a higher or lower output voltage, depending on the mode selected.

In voltage doubling mode, the input voltage is doubled, allowing for a positive output voltage range of 3V to 20V. In voltage inverting mode, the input voltage is inverted, resulting in a negative output voltage range of -1.5V to -10V.

The IC features low-power consumption, making it suitable for battery-powered applications. It also has a wide input voltage range and can deliver an output current of up to 20mA.

Advantages and Disadvantages

Advantages: - Low-power consumption - Wide input voltage range - Compact 8-pin package - Can operate in voltage doubling or inverting mode - Suitable for battery-powered applications

Disadvantages: - Limited output current capacity (up to 20mA) - Requires external capacitors for operation

Working Principles

The TC7660EPA operates based on the principle of charge pumping. It uses a combination of switches and capacitors to transfer charge from the input to the output, effectively increasing or decreasing the voltage level.

In voltage doubling mode, the input voltage charges a series of capacitors, which are then switched to double the voltage across the output capacitor. In voltage inverting mode, the input voltage charges a capacitor, which is then switched to reverse the polarity and generate a negative output voltage.

Detailed Application Field Plans

The TC7660EPA finds applications in various fields where voltage conversion is required. Some of the common application areas include:

1. Portable Electronics: The IC can be used in battery-powered devices, such as smartphones, tablets, and portable audio players, to convert the battery voltage to a suitable level for different components.

2. Industrial Automation: It can be employed in industrial automation systems to convert voltages for sensors, actuators, and control circuits.

3. Automotive Electronics: The IC can be utilized in automotive applications to convert voltages for various subsystems, such as lighting, displays, and sensors.

4. Telecommunications: It finds use in telecommunications equipment, such as routers, switches, and modems, for voltage conversion purposes.

Detailed and Complete Alternative Models

• MAX660: Voltage Converter IC with similar specifications and pin configuration.
• LT1054: Another voltage converter IC offering higher output current capability.
• MC34063: Integrated Switching Regulator IC that can perform voltage conversion tasks.

These alternative models provide similar functionality and can be considered as alternatives to the TC7660EPA based on specific requirements and application needs.

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