Overview
The L78L09CD13TR is a linear voltage regulator produced by STMicroelectronics. It is part of the L78L series, which are three-terminal positive voltage regulators known for their reliability and robustness. These regulators are designed to provide a fixed output voltage and are suitable for a wide range of applications, including local or on-card regulation to eliminate noise and distribution problems associated with single-point regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 8.28 - 9.72 | V |
| Output Current | Up to 100 mA | mA |
| Input Voltage Range | 11.5 to 23 V | V |
| Line Regulation | 200 - 250 mV | mV |
| Load Regulation | 40 - 80 mV | mV |
| Quiescent Current | 6 mA (at 25°C), 5.5 mA (at 125°C) | mA |
| Output Noise Voltage | 70 µV (10 Hz to 100 kHz) | µV |
| Supply Voltage Rejection | 37 - 44 dB (at 120 Hz) | dB |
| Dropout Voltage | 1.7 V | V |
| Operating Junction Temperature Range | 0 to 125 °C | °C |
| Storage Temperature Range | -65 to 150 °C | °C |
Key Features
- Internal current limiting and thermal shutdown for enhanced reliability and protection.
- No external components required for operation.
- Available in ±4% (A) or ±8% (C) selection for output voltage tolerance.
- Low quiescent current and low noise output.
- Can be used as a replacement for Zener diode/resistor combinations.
- Compact packages including TO-92, SO-8, and SOT-89.
Applications
- Local or on-card voltage regulation to eliminate noise and distribution problems.
- Use with power pass elements to create high-current voltage regulators.
- Replacement for Zener diode/resistor combinations in various circuits.
- General-purpose voltage regulation in electronic devices.
- Industrial and consumer electronics where stable voltage is required.
Q & A
- What is the output voltage of the L78L09CD13TR?
The output voltage of the L78L09CD13TR is between 8.28 V and 9.72 V.
- What is the maximum output current of the L78L09CD13TR?
The maximum output current is up to 100 mA.
- What is the input voltage range for the L78L09CD13TR?
The input voltage range is from 11.5 V to 23 V.
- Does the L78L09CD13TR require external components for operation?
No, the L78L09CD13TR does not require external components for operation.
- What are the key protection features of the L78L09CD13TR?
The key protection features include internal current limiting and thermal shutdown.
- What are the typical applications of the L78L09CD13TR?
Typical applications include local or on-card voltage regulation, high-current voltage regulators, and replacement for Zener diode/resistor combinations.
- What is the quiescent current of the L78L09CD13TR at 25°C?
The quiescent current at 25°C is 6 mA.
- What is the dropout voltage of the L78L09CD13TR?
The dropout voltage is 1.7 V.
- What are the available packages for the L78L09CD13TR?
The available packages include TO-92, SO-8, and SOT-89.
- What is the operating junction temperature range for the L78L09CD13TR?
The operating junction temperature range is from 0 to 125 °C.
