TC7662BCPA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Converter
• Characteristics: Low-power, voltage doubling/inverting, charge pump
• Package: DIP-8, SOIC-8
• Essence: Converts input voltage to a higher or lower output voltage using charge pump technology
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

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

Detailed Pin Configuration

The TC7662BCPA has 8 pins arranged as follows:

___________ | | 1 | | 8 |___________|

1. Pin 1: VOUT- (Negative Output)
2. Pin 2: GND (Ground)
3. Pin 3: VIN+ (Positive Input)
4. Pin 4: VIN- (Negative Input)
5. Pin 5: OSC (Oscillator)
6. Pin 6: VOUT+ (Positive Output)
7. Pin 7: VDD (Positive Supply Voltage)
8. Pin 8: SHDN (Shutdown)

Functional Features

• Voltage doubling: Converts a low input voltage to a higher output voltage.
• Voltage inverting: Converts a positive input voltage to a negative output voltage.
• Charge pump technology: Uses capacitors to store and transfer charge, eliminating the need for external inductors.
• Low-power consumption: Operates with a low supply current, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Simple and compact design - Wide input voltage range - High output current capability - Low-power consumption - No external inductors required

Disadvantages: - Limited output voltage range - Output voltage ripple may be present - Sensitivity to load variations

Working Principles

The TC7662BCPA utilizes charge pump technology to convert the input voltage to a higher or lower output voltage. It consists of an oscillator, capacitors, and switches. The oscillator generates a clock signal that controls the switching of the internal switches. During each clock cycle, the capacitors are charged and discharged, transferring charge from the input to the output. This process effectively doubles or inverts the input voltage.

Detailed Application Field Plans

The TC7662BCPA is commonly used in various applications, including:

1. Portable Electronics: Powering LCD displays, backlighting, and audio amplifiers.
2. Industrial Control Systems: Generating negative supply voltages for analog circuitry.
3. Automotive Electronics: Providing voltage conversion for sensors, actuators, and lighting systems.
4. Telecommunications: Voltage conversion for communication modules and network equipment.
5. Medical Devices: Powering medical instruments and diagnostic equipment.

Detailed and Complete Alternative Models

1. ICL7660CPA: Similar voltage converter IC with comparable specifications.
2. MAX660CPA: Voltage converter IC with additional features such as shutdown control and adjustable output voltage.
3. LT1054CP: High-performance voltage converter IC with extended temperature range and higher output current capability.

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

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