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LM723CH
Product Overview
Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: - Adjustable voltage regulator - High precision and stability - Wide input voltage range - Current limiting and thermal shutdown protection - Suitable for both linear and switching applications
Package: TO-220
Essence: The LM723CH is a versatile voltage regulator IC that provides precise and stable output voltage control. It is commonly used in various electronic circuits to regulate voltage levels and ensure reliable power supply.
Packaging/Quantity: The LM723CH is typically sold in packs of 10 or more.
Specifications
- Input Voltage Range: 3V to 40V
- Output Voltage Range: 2V to 37V
- Output Current: Up to 150mA
- Reference Voltage: 7.15V
- Temperature Range: -55°C to +125°C
Pin Configuration
The LM723CH IC has the following pin configuration:
- Vref: Reference voltage output
- Inverting Input (-): Feedback input for regulating voltage
- Non-Inverting Input (+): Reference voltage adjustment input
- Ground (GND): Common ground reference
- Output: Regulated output voltage
- Collector: Collector terminal for external pass transistor
- Base: Base terminal for external pass transistor
- Emitter: Emitter terminal for external pass transistor
Functional Features
- Adjustable Output: The LM723CH allows precise adjustment of the output voltage using external resistors.
- Current Limiting: It incorporates current limiting circuitry to protect the load and the regulator from excessive current.
- Thermal Shutdown: The IC includes a built-in thermal shutdown feature that protects it from overheating.
- Short Circuit Protection: It offers short circuit protection to prevent damage to the IC and connected components.
Advantages and Disadvantages
Advantages: - High precision and stability - Wide input voltage range - Current limiting and thermal shutdown protection ensure safety - Suitable for both linear and switching applications
Disadvantages: - Limited output current capacity (up to 150mA) - Requires external pass transistor for higher current applications
Working Principles
The LM723CH operates as a voltage regulator by comparing the reference voltage (Vref) with the feedback voltage (Vfb). It adjusts the output voltage by controlling the conduction of an external pass transistor. The IC continuously monitors the output voltage and adjusts the pass transistor's conduction to maintain a stable output voltage.
Detailed Application Field Plans
The LM723CH finds applications in various fields, including: 1. Power supply circuits 2. Battery charging systems 3. Voltage regulators for audio amplifiers 4. Adjustable power sources for electronic projects 5. Industrial control systems 6. Automotive electronics
Detailed and Complete Alternative Models
Some alternative models to the LM723CH include: - LM317: Adjustable positive voltage regulator - LM350: Adjustable positive voltage regulator with higher current capacity - LT1083: Adjustable positive voltage regulator with low dropout voltage - LM7805: Fixed 5V voltage regulator - LM7812: Fixed 12V voltage regulator
These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.
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Énumérez 10 questions et réponses courantes liées à l'application de LM723CH dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of LM723CH in technical solutions:
Q: What is LM723CH? A: LM723CH is a voltage regulator IC that can be used to regulate and control the output voltage in various electronic circuits.
Q: What is the maximum input voltage for LM723CH? A: The maximum input voltage for LM723CH is typically around 40 volts.
Q: How does LM723CH regulate the output voltage? A: LM723CH uses feedback control to compare the output voltage with a reference voltage and adjusts the output accordingly.
Q: Can LM723CH handle high current loads? A: Yes, LM723CH can handle high current loads up to a certain limit, typically around 150 mA.
Q: What are the typical applications of LM723CH? A: LM723CH is commonly used in power supply circuits, battery chargers, voltage regulators, and adjustable voltage sources.
Q: How do I set the desired output voltage using LM723CH? A: The output voltage can be set by adjusting the value of external resistors connected to the feedback pins of LM723CH.
Q: Can LM723CH be used as a current regulator? A: Yes, LM723CH can be configured as a current regulator by using an external transistor in conjunction with the IC.
Q: Is LM723CH suitable for both AC and DC input voltages? A: Yes, LM723CH can be used with both AC and DC input voltages, as long as the maximum input voltage limit is not exceeded.
Q: Can LM723CH operate in a wide temperature range? A: Yes, LM723CH is designed to operate in a wide temperature range, typically from -55°C to +125°C.
Q: Are there any specific precautions to consider when using LM723CH? A: It is important to ensure proper heat dissipation and avoid exceeding the maximum input voltage and current limits specified in the datasheet of LM723CH.