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Product Detailed Parameters
- Description：IC REG LINEAR 5V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：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：0°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The L78L05CZ is a three-terminal positive linear voltage regulator from the STMicroelectronics L78Lxx series, housed in a TO-92 package. It provides a fixed output voltage of 5 V with a maximum output current of 100 mA. The device features internal current limiting and thermal shutdown protection. Electrical characteristics include a line regulation of 200 mV (VI = 8.5 to 20 V) and load regulation of 60 mV (IO = 1 to 100 mA). The quiescent current is typically 6 mA at 25 °C. The maximum DC input voltage is 30 V, and the operating junction temperature range is 0 to 125 °C.
Feature Summary
- Internal current limiting and thermal shutdown for robust operation
- No external components required for basic regulation
- Designed as a replacement for Zener diode/resistor combinations
Applications
- Local or on-card voltage regulation
- Elimination of noise associated with single-point regulation
- Current regulator circuits
Procurement Notes
Verify the specific suffix 'C' indicates an accuracy selection of ±8% for the output voltage. Confirm that the TO-92 package matches the intended PCB footprint and thermal requirements. Ensure the application input voltage does not exceed the absolute maximum rating of 30 V. Check datasheet specifications for dropout voltage under expected load conditions.
Selection Notes
Select this component when a fixed 5 V output is required with up to 100 mA capability. The ±8% tolerance suits applications where tighter precision is unnecessary. Consider the thermal resistance of the TO-92 package for heat dissipation. Use with power pass elements if higher current output is needed beyond the integrated limit.
Part Context
This part belongs to the L78Lxx series of three-terminal positive regulators. The series includes various fixed output voltages ranging from 3.3 V to 24 V. The 'C' suffix denotes a standard accuracy grade compared to the 'A' variant. The family is designed for general-purpose regulation tasks requiring simple implementation and inherent protection features.
Replacement Considerations
NCV78L05ABPRMG
FAQ
What is the output voltage tolerance for the L78L05CZ?
The 'C' suffix indicates an output voltage accuracy selection of ±8%.
Can the L78L05CZ be used as a current regulator?
Yes, the datasheet lists typical application circuits for using the device as a current regulator.
