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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series
Packaging Tape & Box (TB) | Cut Tape (CT)
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 0°C ~ 125°C
Grade -
Qualification -
Mounting Type Through Hole
Package / Case TO-226-3, TO-92-3 (TO-226AA) Formed Leads
Supplier Device Package TO-92-3
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The L78L05ACZ-AP from STMicroelectronics is a fixed 5V linear regulator delivering up to 100mA. With a quiescent current of 5.5mA and PSRR of 49dB at 120Hz, it provides reliable regulation for a wide range of applications. The TO-92-3 package is easy to integrate into through-hole designs, making it a versatile choice for industrial and consumer electronics.

  • Proven Reliability: ST's L78L series has decades of field-proven performance in industrial applications.
  • Thermal Protection: Internal current limiting and thermal shutdown safeguard the regulator and load.
  • Simple Integration: TO-92 package with standard pinout simplifies PCB layout and replacement.
  • Low Noise: 49dB PSRR at 120Hz effectively filters full-wave rectified AC ripple.

Microcontroller Power Supply

Provides a stable 5V rail for 8-bit and 16-bit MCUs in industrial control panels, with 100mA sufficient for logic and small peripherals.

Analog Reference Supply

The 49dB PSRR at 120Hz reduces rectifier ripple in linear power supplies, making it suitable for op-amp circuits in audio mixers.

Home Appliance Control Boards

TO-92 package with through-hole leads simplifies assembly in washing machines and microwaves, where reliability is key.

Battery Charger Circuits

Regulates 5V for charging logic in NiMH/NiCd chargers, with thermal shutdown protection preventing damage.

Sensor Signal Conditioning

Powers bridge sensors and instrumentation amplifiers in weigh scales, providing a low-noise 5V supply.

Legacy 5V Logic Systems

Direct replacement for older 7805 regulators in TTL logic circuits, offering lower dropout and better regulation.

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; typical range is 7V to 20V (refer to datasheet).
Q: What is the quiescent current?
A: 5.5mA.
Q: What is the PSRR?
A: 49dB at 120Hz.
Q: What package is available?
A: TO-92-3.
Base Product Number : L78L05
100mA 5V Industrial LDO Linear Regulator STMicroelectronics Through-Hole 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; typical range is 7V to 20V (refer to datasheet).
Q: What is the quiescent current?
A: 5.5mA.
Q: What is the PSRR?
A: 49dB at 120Hz.
Q: What package is available?
A: TO-92-3.