Overview
The LM340T-15/NOPB is a fixed voltage regulator produced by Texas Instruments. It is part of the LM340 and LM78XX family, which are known for their reliability and versatility in power supply applications. This specific model provides a regulated output voltage of 15V and can handle up to 1.5A of current. The device is packaged in a 3-pin TO-220 package, making it suitable for a variety of power supply designs.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (VO) | TJ = 25°C, 5 mA ≤ IO ≤ 1 A | 14.4 | 15 | 15.6 | V |
| Line Regulation (ΔVO) | IO = 500 mA, TJ = 25°C, 17.5 V ≤ VIN ≤ 30 V | 4 | - | 150 | mV |
| Load Regulation (ΔVO) | TJ = 25°C, 5 mA ≤ IO ≤ 1.5 A | 10 | - | 25 | mV |
| Quiescent Current (IQ) | TJ = 25°C | - | 6 | 6.5 | mA |
| Dropout Voltage (RO) | TJ = 25°C, IO = 1 A | - | - | 2 | V |
| Short-Circuit Current | TJ = 25°C | - | - | 2.1 | A |
| Peak Output Current | TJ = 25°C | - | - | 2.4 | A |
| Input Voltage (VIN) | Required to maintain line regulation, TJ = 25°C, IO ≤ 1 A | 7.5 | - | - | V |
Key Features
- Fixed Output Voltage: The LM340T-15/NOPB provides a stable output voltage of 15V.
- High Current Capability: It can handle up to 1.5A of output current.
- Low Dropout Voltage: The device has a dropout voltage of 2V at 1A output current.
- Thermal Stability: The regulator is designed to operate over a wide temperature range, ensuring stable performance.
- Compact Packaging: Available in a 3-pin TO-220 package, making it suitable for various applications.
Applications
The LM340T-15/NOPB is widely used in various power supply applications, including:
- Power Supplies: For providing regulated DC voltage in power supply units.
- Industrial Control Systems: In control circuits and power distribution systems.
- Consumer Electronics: In devices requiring stable DC voltage, such as audio equipment and other electronic appliances.
- Automotive Systems: For powering automotive electronics that require a stable voltage supply.
Q & A
- What is the output voltage of the LM340T-15/NOPB?
The output voltage of the LM340T-15/NOPB is 15V. - What is the maximum output current of the LM340T-15/NOPB?
The maximum output current is 1.5A. - What is the dropout voltage of the LM340T-15/NOPB at 1A output current?
The dropout voltage is 2V at 1A output current. - What is the typical quiescent current of the LM340T-15/NOPB?
The typical quiescent current is 6mA. - What is the short-circuit current of the LM340T-15/NOPB?
The short-circuit current is 2.1A. - What is the peak output current of the LM340T-15/NOPB?
The peak output current is 2.4A. - What is the minimum input voltage required to maintain line regulation?
The minimum input voltage required is 7.5V. - In what package is the LM340T-15/NOPB available?
The LM340T-15/NOPB is available in a 3-pin TO-220 package. - What are some common applications of the LM340T-15/NOPB?
Common applications include power supplies, industrial control systems, consumer electronics, and automotive systems. - What is the operating temperature range of the LM340T-15/NOPB?
The operating temperature range is 0°C to 125°C.
