Texas Instruments
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LM723H
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LM723H

Basic Information Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage regulator
  • Characteristics: Adjustable, precision, linear voltage regulator
  • Package: TO-100 metal can package
  • Essence: Monolithic integrated circuit
  • Packaging/Quantity: Available in tubes or reels, quantity varies

Specifications

  • Input Voltage Range: 14V to 40V
  • Output Voltage Range: 2V to 37V
  • Output Current: Up to 150mA
  • Line Regulation: 0.01%/V
  • Load Regulation: 0.1%/mA
  • Temperature Range: -55°C to +125°C

Detailed Pin Configuration

The LM723H IC has a total of 14 pins. The pin configuration is as follows:

  1. Vref: Reference voltage output
  2. Comp: Compensation terminal for error amplifier
  3. Inv: Inverting input of the error amplifier
  4. Non-inv: Non-inverting input of the error amplifier
  5. Vout: Regulated output voltage
  6. Isense: Current sense input
  7. Gnd: Ground reference
  8. Vcc: Positive supply voltage
  9. Vz: Zener diode reference voltage
  10. Adj: Adjust pin for setting the output voltage
  11. Vo: Output voltage sensing terminal
  12. Iadj: Adjust current terminal
  13. Vref: Reference voltage input
  14. Vz: Zener diode reference voltage

Functional Features

  • Adjustable output voltage: The LM723H allows the user to set the desired output voltage within the specified range.
  • Precision regulation: It provides precise and stable output voltage regulation, ensuring accurate power supply for various applications.
  • Current limiting: The IC incorporates current limiting functionality to protect the connected load from excessive current.
  • Short-circuit protection: It includes built-in short-circuit protection to prevent damage in case of a short circuit.
  • Thermal shutdown: The LM723H has thermal shutdown capability, which protects the IC from overheating.

Advantages and Disadvantages

Advantages: - Wide input voltage range - Adjustable output voltage - High precision regulation - Current limiting and short-circuit protection - Thermal shutdown feature

Disadvantages: - Limited output current capacity (up to 150mA) - Requires external components for complete voltage regulation circuit

Working Principles

The LM723H is a linear voltage regulator that uses an error amplifier, reference voltage, and feedback mechanism to maintain a stable output voltage. The user can adjust the output voltage by setting the voltage at the Adj pin. The error amplifier compares the output voltage with the reference voltage and adjusts the control element to maintain the desired output voltage. The IC also incorporates various protection features to ensure safe operation.

Detailed Application Field Plans

The LM723H is widely used in various applications where precise and adjustable voltage regulation is required. Some common application fields include: - Power supply units - Battery chargers - Voltage stabilizers - Audio amplifiers - Industrial control systems - Test and measurement equipment

Detailed and Complete Alternative Models

  • LM317: Adjustable positive voltage regulator
  • LM350: Adjustable positive voltage regulator with higher current capacity
  • LM7805: Fixed 5V voltage regulator
  • LT1083: Adjustable positive voltage regulator with high current capacity
  • LM338: Adjustable positive voltage regulator with high current capacity and low dropout voltage

These alternative models offer similar functionality and can be used as substitutes for the LM723H in different applications.

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10 pirs û bersivên hevpar ên têkildarî sepana LM723H di çareseriyên teknîkî de navnîş bikin

Sure! Here are 10 common questions and answers related to the application of LM723H in technical solutions:

  1. Q: What is LM723H? A: LM723H is a voltage regulator IC that can be used to regulate and control the output voltage in various electronic circuits.

  2. Q: What is the maximum input voltage for LM723H? A: The maximum input voltage for LM723H is typically around 40 volts.

  3. Q: How does LM723H regulate the output voltage? A: LM723H uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts its internal circuitry to maintain a stable output voltage.

  4. Q: Can LM723H handle high current loads? A: Yes, LM723H can handle high current loads up to a certain limit. However, for higher currents, an external pass transistor may be required.

  5. Q: What are the typical applications of LM723H? A: LM723H is commonly used in power supply circuits, battery chargers, adjustable voltage regulators, and other applications where precise voltage regulation is required.

  6. Q: How do I set the desired output voltage using LM723H? A: The output voltage can be set by adjusting the values of two external resistors connected to the LM723H's voltage reference pins.

  7. Q: Can LM723H operate in both positive and negative voltage configurations? A: Yes, LM723H can be configured to operate in both positive and negative voltage configurations depending on the circuit requirements.

  8. Q: Is LM723H protected against overcurrent and overheating? A: No, LM723H does not have built-in protection against overcurrent or overheating. External protection measures like fuses and heat sinks may be required.

  9. Q: Can LM723H be used in high-frequency applications? A: LM723H is not specifically designed for high-frequency applications. It is more suitable for low to moderate frequency circuits.

  10. Q: Are there any recommended capacitors for stability with LM723H? A: Yes, it is recommended to use a small ceramic capacitor (around 0.1µF) and a larger electrolytic capacitor (typically 10µF or higher) for stability and noise filtering purposes.

Please note that these answers are general guidelines and may vary depending on the specific circuit design and application requirements.