LM723CD

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Adjustable, Precision, Linear
• Package: DIP (Dual In-line Package)
• Essence: Monolithic IC voltage regulator
• Packaging/Quantity: Tube packaging, typically 25 pieces per tube

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 LM723CD 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 Terminal for Error Amplifier
4. Non-inv: Non-Inverting Input Terminal for Error Amplifier
5. Out: Output Terminal
6. Vz: Zener Diode Connection
7. Vcc: Positive Supply Voltage
8. Gnd: Ground
9. Adj: Adjust Terminal for Voltage Setting
10. Iadj: Adjust Terminal for Current Setting
11. Sense: Sensing Terminal for Voltage Regulation
12. Vin: Input Voltage Terminal
13. Vout: Output Voltage Terminal
14. Temp: Temperature Sensing Terminal

Functional Features

• Adjustable Output Voltage: The LM723CD allows the user to adjust the output voltage within a specified range.
• Precision Regulation: It provides precise and stable output voltage regulation.
• Current Limiting: The IC incorporates current limiting functionality to protect the circuit from excessive current.
• Short Circuit Protection: It includes short circuit protection to prevent damage in case of a short circuit.
• Thermal Shutdown: The LM723CD has built-in thermal shutdown protection to prevent overheating.

Advantages and Disadvantages

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

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

Working Principles

The LM723CD is a monolithic integrated circuit designed as an adjustable voltage regulator. It operates by comparing the reference voltage (Vref) with the feedback voltage from the sensing terminal (Sense). The error amplifier amplifies the difference between these voltages and adjusts the output voltage accordingly. By adjusting the values of external resistors connected to the adjust terminal (Adj), the desired output voltage can be set.

Detailed Application Field Plans

The LM723CD finds applications in various fields, including: 1. Power Supply Design: It is commonly used in power supply circuits to regulate the output voltage. 2. Battery Charging Systems: The IC can be employed in battery charging systems to maintain a stable charging voltage. 3. Audio Amplifiers: It can be utilized in audio amplifier circuits to provide a regulated power supply for audio components. 4. Industrial Control Systems: The LM723CD is suitable for regulating voltages in industrial control systems, ensuring stable operation.

Detailed and Complete Alternative Models

Some alternative models to LM723CD that offer similar functionality include: - LM317: Adjustable Voltage Regulator with higher output current capacity. - LM350: Adjustable Voltage Regulator with higher output current capacity and improved thermal regulation. - LT1083: Adjustable Linear Regulator with low dropout voltage and high output current capability.

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