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Product Detailed Parameters
- Description：IC REG LINEAR -8V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Bulk
- Output Configuration：Negative
- 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 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 L79L08ACZ is a three-terminal negative voltage regulator from the L79L series by STMicroelectronics, housed in a TO-92 package. It provides a fixed output voltage of -8 V with an output current capability up to 100 mA. The device features internal current limiting and thermal shutdown protection. Electrical characteristics include a maximum input voltage of -30 V, a quiescent current of 6 mA at 25°C, and a dropout voltage of 1.7 V. Operating temperature range is 0 to 125 °C.
Feature Summary
- Internal current limiting and thermal shutdown for robust operation
- Fixed -8 V output without requiring external components
- Low noise and low quiescent current performance
Applications
- Local or on-card regulation for elimination of noise
- Replacement for Zener diode/resistor combinations
- Distribution systems avoiding single-point regulation issues
Procurement Notes
Verify the specific suffix 'AC' indicates ±5% output voltage tolerance compared to standard variants. Confirm the TO-92 package type matches the design requirements. Ensure the negative polarity aligns with the circuit topology. Check for RoHS compliance status if required by the manufacturing process.
Selection Notes
Select this component when a stable negative rail is needed for low-current applications. The AC grade offers tighter voltage tolerance than the C grade. Consider the thermal resistance of the TO-92 package for heat dissipation needs. Ensure the input voltage does not exceed the absolute maximum rating of -30 V.
Part Context
Part of the L79L00 series of negative regulators designed for general-purpose use. The series includes various fixed output voltages such as -5, -6, -8, -9, -12, and -15 V. These regulators are intended to replace discrete Zener-based solutions with improved impedance and stability.
Replacement Considerations
Direct substitutes within the same family include L79L08C (±10% tolerance) and L79L08AB (-40 to 125 °C operating range). Other packages like SO-8 or SOT-89 offer different thermal profiles but require pinout verification.
