Overview
The UA78L12ACLPR is a fixed-voltage linear regulator from Texas Instruments, part of the UA78L series. This regulator is designed to provide a stable output voltage of 12V and is suitable for a wide range of applications. It is characterized by its ability to deliver up to 100 mA of output current and its built-in protection features such as short-circuit current limiting and thermal protection.
The UA78L12ACLPR is available in a TO-92 (LP) package with 3 pins, making it compact and easy to integrate into various electronic designs. The device operates over a temperature range of –40°C to +125°C, ensuring reliability in diverse environmental conditions.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Input Voltage Range (VI) | - | 4.75 | - | 35 | V |
| Output Voltage (VO) | VI = 14 V to 27 V, IO = 1 mA to 40 mA, TJ = 25°C | 11.83 | 12 | 12.31 | V |
| Output Current (IO) | - | - | - | 100 | mA |
| Dropout Voltage | TJ = 25°C | - | - | 1.7 | V |
| Bias Current (IQ) | TJ = 25°C | 3.84 | 4.35 | 4.35 | mA |
| Ripple Rejection | VI = 15 V to 25 V, f = 120 Hz, TJ = 25°C | 40 | - | 50 | dB |
| Operating Temperature Range | - | -40 | - | 125 | °C |
| Package | - | - | - | TO-92 (LP), 3 pins | - |
Key Features
- Input voltage range: 4.75 V to 35 V
- Output voltage: 12 V with tight voltage regulation
- Output current: Up to 100 mA
- Quiescent current (IQ): 3.8 mA typical
- Built-in short-circuit current limiting and thermal protection
- Stable operation without external components
- Compact TO-92 (LP) package with 3 pins
- Operating temperature range: –40°C to +125°C
Applications
- On-card regulation to eliminate noise and distribution problems associated with single-point regulation
- Use with power-pass elements to create high-current voltage regulators
- General-purpose voltage regulation in electronic devices
- Industrial control systems
- Consumer electronics
- Automotive systems
Q & A
- What is the output voltage of the UA78L12ACLPR?
The output voltage of the UA78L12ACLPR is 12 V.
- What is the maximum output current of the UA78L12ACLPR?
The maximum output current is up to 100 mA.
- What is the input voltage range for the UA78L12ACLPR?
The input voltage range is from 4.75 V to 35 V.
- Does the UA78L12ACLPR require external components for stable operation?
No, the UA78L12ACLPR is stable without any external components.
- What are the built-in protection features of the UA78L12ACLPR?
The device has built-in short-circuit current limiting and thermal protection.
- What is the operating temperature range of the UA78L12ACLPR?
The operating temperature range is –40°C to +125°C.
- What package type is the UA78L12ACLPR available in?
The UA78L12ACLPR is available in a TO-92 (LP) package with 3 pins.
- What is the dropout voltage of the UA78L12ACLPR?
The dropout voltage is 1.7 V at TJ = 25°C.
- What is the ripple rejection of the UA78L12ACLPR?
The ripple rejection is 40 dB to 50 dB at VI = 15 V to 25 V and f = 120 Hz.
- What are some common applications of the UA78L12ACLPR?
Common applications include on-card regulation, high-current voltage regulators, general-purpose voltage regulation, industrial control systems, consumer electronics, and automotive systems.
