Overview
The LM380N/NOPB is a 2.5W audio power amplifier designed by Texas Instruments, suitable for various consumer and industrial applications. This device is part of the LM380 series, known for its simplicity and cost-effectiveness. The LM380N/NOPB features a fixed voltage gain of 50, making it easy to integrate into systems without the need for external gain-setting components. It operates over a wide supply voltage range of 10V to 22V, which enhances its versatility in different power supply scenarios.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage (VS) | 10 | - | 22 | V |
| Output Power (POUT) | - | 2.5 | - | W |
| Voltage Gain (AV) | 40 | 50 | 60 | V/V |
| Output Voltage Swing (VOUT) | - | - | 14 | Vp-p |
| Input Resistance (ZIN) | 150k | - | - | Ω |
| Total Harmonic Distortion (THD) | - | - | 0.2 | % |
| Power Supply Rejection Ratio (PSRR) | - | - | 38 | dB |
| Quiescent Supply Current (IQ) | 7 | - | 25 | mA |
| Quiescent Output Voltage (VOUTQ) | 8 | - | 10 | V |
| Short Circuit Current (ISC) | - | - | 1.3 | A |
| Operating Temperature | 0 | - | 70 | °C |
| Junction Temperature | - | - | 150 | °C |
Key Features
- Wide Supply Voltage Range: Operates from 10V to 22V, making it versatile for various power supply scenarios.
- Fixed Voltage Gain: Internally fixed gain of 50 dB simplifies system design.
- Low Quiescent Power Drain: Consumes only 0.13W at 18V supply voltage, reducing power consumption.
- High Peak Current Capability: Can handle peak currents up to 1.3A.
- Input Referenced to Ground: Allows for ground-referenced input signals, enhancing ease of use.
- High Input Impedance: Features an input resistance of 150kΩ.
- Low Distortion: Offers low total harmonic distortion (THD) of 0.2%.
- Short Circuit Proof and Thermal Limiting: Protected against short circuits and overheating.
- Standard Dual-In-Line Package: Available in 8-pin and 14-pin PDIP packages, facilitating easy integration into standard PC layouts.
Applications
- Phonograph Amplifiers: Suitable for simple phonograph amplifier designs.
- Intercoms: Used in intercom systems due to its high fidelity and reliability.
- Line Drivers: Effective as line drivers in various audio systems.
- Teaching Machine Outputs: Utilized in educational equipment for clear audio output.
- Alarms and Ultrasonic Drivers: Employed in alarm systems and ultrasonic applications.
- TV Sound Systems and AM-FM Radios: Used in television sound systems and radio equipment.
- Small Servo Drivers and Power Converters: Suitable for small servo motor control and power conversion applications.
Q & A
- What is the supply voltage range of the LM380N/NOPB?
The LM380N/NOPB operates over a supply voltage range of 10V to 22V.
- What is the fixed voltage gain of the LM380N/NOPB?
The voltage gain is internally fixed at 50 dB.
- What is the maximum output power of the LM380N/NOPB?
The maximum output power is 2.5W.
- What is the input resistance of the LM380N/NOPB?
The input resistance is 150kΩ.
- Is the LM380N/NOPB protected against short circuits?
Yes, it is short circuit proof with internal thermal limiting.
- What are the typical applications of the LM380N/NOPB?
It is used in phonograph amplifiers, intercoms, line drivers, teaching machine outputs, alarms, ultrasonic drivers, TV sound systems, AM-FM radios, small servo drivers, and power converters.
- What is the quiescent power drain of the LM380N/NOPB at 18V supply voltage?
The quiescent power drain is 0.13W at 18V supply voltage.
- What is the maximum junction temperature of the LM380N/NOPB?
The maximum junction temperature is 150°C.
- What are the package options available for the LM380N/NOPB?
It is available in 8-pin and 14-pin PDIP packages.
- Is the LM380N/NOPB RoHS compliant?
Yes, the LM380N/NOPB is RoHS compliant.
