Overview
The LM723CN is a high-precision voltage regulator integrated circuit produced by STMicroelectronics. It is designed primarily for series regulator applications and offers a versatile range of features that make it suitable for various electronic systems. The LM723CN is capable of regulating output voltages from 2V to 37V and can supply output currents up to 150 mA without external transistors, although external transistors can be added to increase the load current up to 10A. This regulator is available in a 14-lead dual in-line plastic (DIP) package and is known for its low standby current drain and provision for either linear or foldback current limiting.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | STMicroelectronics | |
| Type of Integrated Circuit | Voltage Regulator | |
| Kind of Voltage Regulator | Linear, Fixed | |
| Output Voltage | 2V to 37V | V |
| Output Current | 150 mA (without external transistors) | A |
| Input Voltage | Up to 40V | V |
| Case | DIP14 | |
| Mounting | Through-Hole Technology (THT) | |
| Number of Channels | 1 | |
| Operating Temperature Range | −55°C to +150°C (LM723), 0°C to +70°C (LM723C) | °C |
Key Features
- Adjustable Output Voltage: The LM723CN allows for output voltage adjustment from 2V to 37V.
- High Output Current: It can supply up to 150 mA without external transistors and up to 10A with external transistors.
- Low Standby Current Drain: The regulator features extremely low standby current, making it energy-efficient.
- Current Limiting: Provision for either linear or foldback current limiting to protect the device from overcurrent conditions.
- Versatile Applications: Useful in a wide range of applications including shunt regulators, current regulators, and temperature controllers.
- ESD Protection: The device has limited built-in ESD protection, requiring careful handling to prevent electrostatic damage.
Applications
- Series Regulator Applications: Primarily designed for series regulator applications.
- Shunt Regulators: Can be used as a shunt regulator to regulate voltage in parallel with the load.
- Current Regulators: Suitable for applications requiring precise current regulation.
- Temperature Controllers: Can be used in temperature control circuits due to its stable output voltage.
- Switching Regulators: Can be configured to operate as a switching regulator.
Q & A
- What is the output voltage range of the LM723CN?
The output voltage of the LM723CN is adjustable from 2V to 37V.
- What is the maximum output current of the LM723CN without external transistors?
The LM723CN can supply up to 150 mA without external transistors.
- What is the maximum input voltage for the LM723CN?
The maximum input voltage for the LM723CN is 40V.
- What type of package is the LM723CN available in?
The LM723CN is available in a 14-lead dual in-line plastic (DIP) package.
- What are the operating temperature ranges for the LM723 and LM723C?
The LM723 operates from −55°C to +150°C, while the LM723C operates from 0°C to +70°C.
- Can the LM723CN be used as a switching regulator?
Yes, the LM723CN can be configured to operate as either a linear or a switching regulator.
- What is the purpose of the current limiting feature in the LM723CN?
The current limiting feature protects the device from overcurrent conditions and can be set for either linear or foldback current limiting.
- How can the output current of the LM723CN be increased beyond 150 mA?
External transistors can be added to increase the load current up to 10A.
- What are some common applications of the LM723CN?
Common applications include series regulator applications, shunt regulators, current regulators, and temperature controllers.
- Does the LM723CN have built-in ESD protection?
The LM723CN has limited built-in ESD protection, so it requires careful handling to prevent electrostatic damage.
