Overview
The UA78L09ACPK is a fixed-voltage linear regulator from Texas Instruments, part of the UA78L series. This regulator is designed for a wide range of applications, offering stable and reliable voltage regulation. It is particularly useful for on-card regulation, helping to eliminate noise and distribution problems associated with single-point regulation. The UA78L09ACPK does not require external capacitors for stability, making it a convenient choice for various electronic systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range (VI) | 4.75 V to 35 V | V |
| Output Voltage (VO) | 8.6 V to 9.4 V | V |
| Output Current (IO) | Up to 100 mA | mA |
| Quiescent Current (IQ) | 3.8 mA (typical at 25°C) | mA |
| Operating Junction Temperature | –40°C to +125°C | °C |
| Package | 3-pin SOT-89 | |
| Dropout Voltage | 1.7 V | V |
| Ripple Rejection | 36 dB to 45 dB at 120 Hz | dB |
| Output Noise Voltage | 58 µV (typical at 10 Hz to 100 kHz) | µV |
Key Features
- Input voltage range: 4.75 V to 35 V
- Output voltage: 8.6 V to 9.4 V
- Output current up to 100 mA
- Quiescent current of 3.8 mA (typical at 25°C)
- Built-in short-circuit current limiting and thermal protection
- No external capacitor required for stability
- Operating junction temperature range: –40°C to +125°C
- Available in 3-pin SOT-89 package
Applications
- Motor drives
- Appliances
- Building automation
- Flow transmitters
- Factory automation and control
Q & A
- What is the input voltage range of the UA78L09ACPK?
The input voltage range is from 4.75 V to 35 V.
- What is the output voltage of the UA78L09ACPK?
The output voltage is between 8.6 V and 9.4 V.
- What is the maximum output current of the UA78L09ACPK?
The maximum output current is up to 100 mA.
- Does the UA78L09ACPK require external capacitors for stability?
No, it does not require external capacitors for stability.
- What are the built-in protection features of the UA78L09ACPK?
The UA78L09ACPK has built-in short-circuit current limiting and thermal protection.
- What is the operating junction temperature range of the UA78L09ACPK?
The operating junction temperature range is from –40°C to +125°C.
- In what package is the UA78L09ACPK available?
The UA78L09ACPK is available in a 3-pin SOT-89 package.
- What is the dropout voltage of the UA78L09ACPK?
The dropout voltage is 1.7 V.
- What is the ripple rejection of the UA78L09ACPK?
The ripple rejection is between 36 dB and 45 dB at 120 Hz.
- What is the output noise voltage of the UA78L09ACPK?
The output noise voltage is typically 58 µV at 10 Hz to 100 kHz.
