Overview
The L78L24ACUTR is a linear voltage regulator IC produced by STMicroelectronics. It belongs to the L78L series, which is known for its reliability and robustness. This regulator is designed to provide a fixed output voltage of 24V and is capable of delivering up to 100 mA of output current. The L78L24ACUTR features internal current limiting and thermal shutdown, making it essentially indestructible when adequate heat-sinking is provided. It is suitable for a wide range of applications, including local or on-card regulation, and can be used to eliminate noise and distribution problems associated with single-point regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 23 - 25 | V |
| Output Current | Up to 100 | mA |
| Input Voltage Range | 27 - 38 | V |
| Operating Temperature Range | 0 to 125 | °C |
| Quiescent Current | 6 (at 25°C), 5.5 (at 125°C) | mA |
| Line Regulation | 320 mV (max) | mV |
| Load Regulation | 170 mV (max) | mV |
| Dropout Voltage | 1.7 | V |
| Supply Voltage Rejection | 30 - 37 dB | dB |
| Output Noise Voltage | 120 µV | µV |
| Package Type | SOT-89-3 |
Key Features
- Internal Current Limiting and Thermal Shutdown: Ensures the regulator is essentially indestructible when adequate heat-sinking is provided.
- No External Components Required: Simplifies the design and reduces the need for additional components.
- High Accuracy Output Voltage: Available in ±4% (A) or ±8% (C) selection.
- Low Quiescent Current: Reduces power consumption and noise.
- Short-Circuit Protection: Protects the regulator from short-circuit conditions.
- Wide Range of Applications: Suitable for local or on-card regulation, and can be used with power pass elements to make high-current voltage regulators.
Applications
- Local or On-Card Regulation: Eliminates noise and distribution problems associated with single-point regulation.
- High-Current Voltage Regulators: Can be used with power pass elements to create high-current voltage regulators.
- Zener Diode/Resistor Combination Replacement: Offers improvements in terms of lower quiescent current and lower noise.
- General Power Supply Applications: Suitable for various power supply designs requiring a fixed output voltage.
Q & A
- What is the output voltage of the L78L24ACUTR?
The output voltage of the L78L24ACUTR is 24V, with a tolerance of ±4% (A) or ±8% (C).
- What is the maximum output current of the L78L24ACUTR?
The maximum output current is up to 100 mA.
- What is the input voltage range for the L78L24ACUTR?
The input voltage range is 27 to 38 V.
- What are the operating temperature ranges for the L78L24ACUTR?
The operating temperature range is 0 to 125°C.
- Does the L78L24ACUTR require external components?
No, the L78L24ACUTR does not require external components.
- What kind of protection does the L78L24ACUTR have?
The L78L24ACUTR has internal current limiting, thermal shutdown, and short-circuit protection.
- What is the quiescent current of the L78L24ACUTR?
The quiescent current is 6 mA at 25°C and 5.5 mA at 125°C.
- What is the dropout voltage of the L78L24ACUTR?
The dropout voltage is 1.7 V.
- What is the supply voltage rejection of the L78L24ACUTR?
The supply voltage rejection is 30 to 37 dB.
- What is the output noise voltage of the L78L24ACUTR?
The output noise voltage is 120 µV.
