Overview
The L78L12CD13TR is a three-terminal positive voltage regulator from STMicroelectronics, part of the L78L series. These regulators are designed to be robust, featuring internal current limiting and thermal shutdown, making them essentially indestructible. With adequate heat-sinking, they can deliver up to 100 mA of output current. The L78L series is intended for fixed voltage regulation in various applications, including local or on-card regulation to eliminate noise and distribution problems associated with single-point regulation. They can also be used with power pass elements to create high-current voltage regulators and as a replacement for Zener diode/resistor combinations, offering improvements in quiescent current and noise reduction.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | Up to 100 mA | mA |
| Output Voltage | 12 V | V |
| Input Voltage Range | 14.5 to 27 V | V |
| Line Regulation | 200 mV (VI = 14.5 to 27 V, TJ = 25 °C) | mV |
| Load Regulation | 100 mV (IO = 1 to 100 mA, TJ = 25 °C) | mV |
| Quiescent Current | 6.5 mA (TJ = 25 °C) | mA |
| Dropout Voltage | 1.7 V | V |
| Operating Temperature Range | 0 to 125 °C | °C |
| Package Type | SO-8 |
Key Features
- Output current up to 100 mA
- Output voltage of 12 V with options for other voltages in the series (3.3, 5, 6, 8, 9, 10, 12, 15, 18, 24 V)
- Internal current limiting and thermal shutdown for robust operation
- Short-circuit protection
- No external components required
- Available in either ± 4% (A) or ± 8% (C) selection
- Low quiescent current and low noise
Applications
- Local or on-card voltage regulation to eliminate noise and distribution problems
- Replacement for Zener diode/resistor combinations
- Use with power pass elements to create high-current voltage regulators
- Industrial applications requiring stable and reliable voltage regulation
Q & A
- What is the maximum output current of the L78L12CD13TR?
The maximum output current is up to 100 mA.
- What is the output voltage of the L78L12CD13TR?
The output voltage is 12 V.
- What are the key protection features of the L78L series?
The key protection features include internal current limiting and thermal shutdown, as well as short-circuit protection.
- Do I need external components to use the L78L12CD13TR?
No, external components are not required.
- What is the operating temperature range of the L78L12CD13TR?
The operating temperature range is from 0 to 125 °C.
- What package type is the L78L12CD13TR available in?
The L78L12CD13TR is available in an SO-8 package.
- Can the L78L series be used to replace Zener diode/resistor combinations?
- What are some common applications for the L78L series?
- What is the quiescent current of the L78L12CD13TR at 25 °C?
The quiescent current is 6.5 mA at 25 °C.
- What is the dropout voltage of the L78L12CD13TR?
The dropout voltage is 1.7 V.
