Microchip Technology
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TC7660SEJA
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TC7660SEJA

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Converter
  • Characteristics: High efficiency, low power consumption
  • Package: SOIC-8
  • Essence: Charge Pump Voltage Converter
  • 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
  • Switching Frequency: 10kHz to 50kHz
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TC7660SEJA has a total of 8 pins:

  1. VOUT: Negative output voltage
  2. GND: Ground
  3. VIN: Positive input voltage
  4. OSC: Oscillator frequency control
  5. C1-: External capacitor connection for oscillator frequency control
  6. C1+: External capacitor connection for oscillator frequency control
  7. C2+: External capacitor connection for voltage conversion
  8. C2-: External capacitor connection for voltage conversion

Functional Features

  • Converts positive input voltage to negative output voltage
  • Uses charge pump technology for efficient voltage conversion
  • Low power consumption
  • Wide input voltage range allows for versatile applications
  • Adjustable switching frequency for optimization

Advantages

  • High efficiency conversion
  • Compact and easy-to-use package
  • Wide operating temperature range
  • Low power consumption extends battery life
  • Versatile input and output voltage ranges

Disadvantages

  • Limited output current capacity
  • Requires external capacitors for proper operation
  • Not suitable for high-power applications

Working Principles

The TC7660SEJA is a charge pump voltage converter that utilizes switched capacitor techniques to generate a negative output voltage from a positive input voltage. It employs an internal oscillator to control the charge and discharge cycles of external capacitors, resulting in efficient voltage conversion.

Detailed Application Field Plans

The TC7660SEJA is commonly used in various applications, including:

  1. Portable electronic devices: Provides negative voltage for LCD displays, backlighting, and audio amplifiers.
  2. Industrial automation: Used in control systems, sensors, and actuators that require negative voltage.
  3. Automotive electronics: Enables negative voltage generation for automotive lighting, sensors, and communication modules.
  4. Telecommunications: Utilized in networking equipment, routers, and switches for negative voltage requirements.

Detailed and Complete Alternative Models

  1. ICL7660S: Similar functionality and pin configuration, available in different package options.
  2. MAX660: Offers additional features such as shutdown mode and adjustable oscillator frequency.
  3. LT1054: Higher output current capability and wider input voltage range.

(Note: This is not an exhaustive list; there are several alternative models available in the market.)

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van TC7660SEJA in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of TC7660SEJA in technical solutions:

  1. Q: What is TC7660SEJA? A: TC7660SEJA is a voltage converter IC that can generate a negative voltage from a positive input voltage.

  2. Q: What is the input voltage range for TC7660SEJA? A: The input voltage range for TC7660SEJA is typically between 1.5V and 12V.

  3. Q: What is the output voltage range of TC7660SEJA? A: TC7660SEJA can generate a negative output voltage ranging from -1.5V to -12V.

  4. Q: Can TC7660SEJA be used to generate positive voltages as well? A: No, TC7660SEJA is specifically designed to generate negative voltages only.

  5. Q: What is the maximum output current of TC7660SEJA? A: The maximum output current of TC7660SEJA is typically around 20mA.

  6. Q: Is TC7660SEJA suitable for low-power applications? A: Yes, TC7660SEJA is commonly used in low-power applications due to its low quiescent current and low power consumption.

  7. Q: Can TC7660SEJA be used in battery-powered devices? A: Yes, TC7660SEJA's low power consumption makes it suitable for battery-powered devices where efficient power usage is crucial.

  8. Q: What are some typical applications of TC7660SEJA? A: TC7660SEJA is often used in applications such as LCD biasing, sensor interfaces, audio amplifiers, and charge pumps.

  9. Q: Does TC7660SEJA require external components for operation? A: Yes, TC7660SEJA requires a few external capacitors to set the output voltage and stabilize its operation.

  10. Q: Is TC7660SEJA available in different package options? A: Yes, TC7660SEJA is available in various package options, including DIP, SOIC, and MSOP, making it suitable for different PCB layouts and space constraints.

Please note that the answers provided here are general and may vary depending on the specific datasheet and application requirements of TC7660SEJA.