Overview
The UA78L12ACLPRE3 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 12 volts and is suitable for a wide range of applications. It features a robust design with built-in short-circuit current limiting and thermal protection, ensuring reliable operation under various conditions.
The device is available in several package options, including the TO-92 package, which is compact and suitable for space-constrained designs. The UA78L12ACLPRE3 operates over a temperature range of 0°C to 125°C, making it versatile for different 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 | 11.4 | 12 | 12.6 | V |
| Output Current (IO) | - | - | - | 100 | mA |
| Quiescent Current (IQ) | TJ = 25°C | - | 4.3 | 6.5 | mA |
| Dropout Voltage | TJ = 25°C | - | - | 1.7 | V |
| Temperature Range | - | 0 | - | 125 | °C |
| Package Type | - | - | - | TO-92 | - |
Key Features
- Input voltage range: 4.75 V to 35 V
- Output voltage range: 12 V with ±5% tolerance
- Output current up to 100 mA
- Quiescent current of 4.3 mA to 6.5 mA at TJ = 25°C
- Built-in short-circuit current limiting and thermal protection
- Stable operation without any external components
- High ripple rejection: up to 42 dB at 120 Hz
- Low output noise voltage: 70 µV to 290 µV
- Available in TO-92, SOIC, and SOT-89 packages
Applications
- Motor drives
- Appliances
- Building automation
- Flow transmitters
- Factory automation and control
Q & A
- What is the output voltage of the UA78L12ACLPRE3?
The output voltage of the UA78L12ACLPRE3 is 12 volts with a ±5% tolerance.
- What is the input voltage range for the UA78L12ACLPRE3?
The input voltage range for the UA78L12ACLPRE3 is from 4.75 V to 35 V.
- What is the maximum output current of the UA78L12ACLPRE3?
The maximum output current of the UA78L12ACLPRE3 is up to 100 mA.
- Does the UA78L12ACLPRE3 have built-in protection features?
Yes, the UA78L12ACLPRE3 has built-in short-circuit current limiting and thermal protection.
- What are the available package types for the UA78L12ACLPRE3?
The UA78L12ACLPRE3 is available in TO-92, SOIC, and SOT-89 packages.
- What is the operating temperature range for the UA78L12ACLPRE3?
The operating temperature range for the UA78L12ACLPRE3 is from 0°C to 125°C.
- What is the quiescent current of the UA78L12ACLPRE3 at 25°C?
The quiescent current of the UA78L12ACLPRE3 at 25°C is between 4.3 mA and 6.5 mA.
- Does the UA78L12ACLPRE3 require external components for stable operation?
No, the UA78L12ACLPRE3 is stable without any external components.
- What is the ripple rejection of the UA78L12ACLPRE3?
The ripple rejection of the UA78L12ACLPRE3 is up to 42 dB at 120 Hz.
- What are some typical applications of the UA78L12ACLPRE3?
Typical applications include motor drives, appliances, building automation, flow transmitters, and factory automation and control.
