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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series
Packaging Bulk |
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 30V
Voltage - Output (Min/Fixed) 5V
Voltage - Output (Max) -
Voltage Dropout (Max) -
Current - Output 100mA
Current - Quiescent (Iq) 5.5 mA
Current - Supply (Max) 6 mA
PSRR 49dB (120Hz)
Control Features -
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C
Grade -
Qualification -
Mounting Type Through Hole
Package / Case TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package TO-92-3
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The L78L05ABZ is a fixed 5V linear regulator from STMicroelectronics, capable of 100mA output. With a quiescent current of 5.5 mA and 49dB PSRR at 120Hz, it delivers clean, stable power for digital and analog circuits. The TO-92-3 package is ideal for through-hole designs, offering simplicity and reliability.

  • Universal 5V Supply: Standard voltage for countless digital applications.
  • Proven Reliability: ST's L78L series trusted for decades.
  • Easy to Use: TO-92-3 package with minimal external components.
  • Noise Filtering: 49dB PSRR at 120Hz reduces hum in audio and measurement.

5V Logic Systems

Powers TTL/CMOS logic ICs in hobbyist and educational projects, providing stable 5V from higher supplies.

Sensor Modules

Supplies 5V to temperature, humidity, and pressure sensors in weather stations and automation.

Relay Driver Circuits

Provides logic-level 5V for relay coils and transistor drivers in control panels.

Arduino and Maker Boards

Regulates 5V for microcontroller boards in prototyping and DIY electronics.

LED Display Drivers

Powers 5V logic for 7-segment and matrix displays in clocks and counters.

Automotive Aftermarket

Stable 5V for dashcams and GPS modules, with 49dB PSRR filtering alternator noise.

Q: What is the output voltage?
A: Fixed 5V output.
Q: What is the maximum output current?
A: 100mA.
Q: What is the input voltage range?
A: Not specified in provided data; refer to ST datasheet.
Q: What is the quiescent current?
A: 5.5 mA.
Q: What is the PSRR?
A: 49dB at 120Hz.
Q: What package is available?
A: TO-92-3.
Base Product Number : L78L05ABZ
100mA 5V 5V Regulator LDO Linear Regulator STMicroelectronics TO-92-3
Q: What is the output voltage?
A: Fixed 5V output.
Q: What is the maximum output current?
A: 100mA.
Q: What is the input voltage range?
A: Not specified in provided data; refer to ST datasheet.
Q: What is the quiescent current?
A: 5.5 mA.
Q: What is the PSRR?
A: 49dB at 120Hz.
Q: What package is available?
A: TO-92-3.