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Product Detailed Parameters
- Description：IC REG LINEAR 8V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：100mA
- Current - Quiescent (Iq)：5.5 mA
- Current - Supply (Max)：6 mA
- PSRR：45dB (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) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The L78L08ACZTR is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, housed in a TO-92 package. It provides a fixed output voltage of 8 V with a maximum output current of 100 mA. The device features internal thermal overload protection and short-circuit protection. Electrical characteristics include a line regulation of 175 mV (VI = 10.5 to 23 V) and load regulation of 80 mV (IO = 1 to 100 mA). The quiescent current is typically 6 mA at 25 °C. The maximum input voltage is 30 V for this output range, and the operating junction temperature range is 0 to 125 °C.
Feature Summary
- Internal current limiting and thermal shutdown mechanisms ensure robust operation under fault conditions.
- Designed as a fixed voltage regulator suitable for local or on-card regulation applications.
- Capable of replacing Zener diode/resistor combinations while offering lower quiescent current and noise.
Applications
- Local or on-card voltage regulation
- Elimination of noise and distribution problems associated with single-point regulation
- Replacement for Zener diode and resistor combinations
Procurement Notes
Verify that the ordering suffix 'ZTR' corresponds to the specific tape-and-reel packaging configuration required for automated assembly processes. Confirm that the 'AC' designation aligns with the required ±8% output voltage tolerance and the 0 to 125 °C operating temperature range specified for this variant. Ensure compatibility with the TO-92 through-hole mounting style.
Selection Notes
Select this component when a fixed 8 V output is required with up to 100 mA load capability. The AC grade provides an 8% voltage tolerance, which may differ from the tighter 4% tolerance offered by the AB grade. Consider the thermal resistance characteristics of the TO-92 package and the necessity of adequate heat sinking if power dissipation approaches limits within the 0 to 125 °C operating range.
Part Context
This part belongs to the L78L series of three-terminal positive regulators manufactured by STMicroelectronics. The series includes various fixed output voltages ranging from 3.3 V to 24 V. The L78L08ACZTR specifically denotes the 8 V output version with AC tolerance grading, packaged in TO-92 and supplied in tape-and-reel format.
Replacement Considerations
NJM78L08UA-TE1 is listed as a substitute part number.
FAQ
What is the maximum input voltage allowed for the L78L08ACZTR?
The maximum DC input voltage is 30 V for output voltages between 3.3 V and 9 V.
Does the L78L08ACZTR require external components for basic operation?
No external components are required for basic regulation, although capacitors are recommended for stability as per typical application circuits.
What protection features are integrated into the L78L08ACZTR?
The device includes internal current limiting and thermal shutdown protection.
