TC7662ACPA

Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Converter
• Characteristics: Low-power, voltage doubling/inverting, high efficiency
• Package: 8-pin PDIP (Plastic Dual In-line Package)
• Essence: Charge Pump Voltage Converter
• Packaging/Quantity: Tube packaging, 25 pieces per tube

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)

Pin Configuration

The TC7662ACPA has the following pin configuration:

```

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| | --| V+ GND |-- Pin 1: Ground (GND) --| VIN VOUT|-- Pin 2: Output Voltage (VOUT) --| OSC C1 |-- Pin 3: Oscillator (OSC) --| C2 C3 |-- Pin 4: Capacitor (C2/C3) --| C4 C5 |-- Pin 5: Capacitor (C4/C5) --| C6 C7 |-- Pin 6: Capacitor (C6/C7) --| C8 C9 |-- Pin 7: Capacitor (C8/C9) --| V- |-- Pin 8: Negative Voltage (V-) |___________| ```

Functional Features

• Voltage doubling and inverting capabilities
• Low-power consumption
• High efficiency conversion
• Wide input voltage range
• Stable output voltage

Advantages

• Compact size and lightweight
• Simple to use and integrate into circuits
• Low quiescent current
• High output current capability
• Wide operating temperature range

Disadvantages

• Limited output current capacity (up to 20mA)
• Requires external capacitors for proper operation
• Not suitable for high-power applications

Working Principles

The TC7662ACPA is a charge pump voltage converter that utilizes switched capacitor techniques to generate a negative voltage from a positive input voltage. It employs an internal oscillator to control the charge transfer between capacitors, resulting in voltage doubling or inversion.

When an input voltage (VIN) is applied, the internal oscillator generates clock signals that drive the charge pump circuitry. The capacitors connected to the appropriate pins are charged and discharged alternately, creating a voltage higher or lower than the input voltage at the output pin (VOUT).

Detailed Application Field Plans

The TC7662ACPA finds applications in various fields, including:

1. Battery-powered devices: Provides a negative voltage supply for LCD displays, sensors, and other components.
2. Audio equipment: Used for biasing audio amplifiers and generating negative supply rails.
3. Industrial automation: Enables voltage conversion for control systems, sensors, and actuators.
4. Telecommunications: Utilized in telecommunication equipment for voltage level shifting and signal conditioning.
5. Automotive electronics: Supports voltage conversion in automotive systems, such as infotainment and lighting.

Alternative Models

1. ICL7660CPA: Similar functionality and pin configuration, but with different specifications.
2. MAX660CPA: Voltage converter IC with similar features and package type.
3. LT1054CP: Integrated circuit offering voltage conversion capabilities with enhanced performance.

Note: This is not an exhaustive list, and there may be other alternative models available in the market.

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