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Product Detailed Parameters
- Description：IC REG LINEAR -8V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Cut Tape (CT),Tape & Box (TB)
- 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) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The L79L08ACZ-AP is a three-terminal negative linear voltage regulator from the L79L series, manufactured by STMicroelectronics. It provides a fixed output voltage of -8 V with an output current capability up to 100 mA. The device operates within a DC input voltage range of -10.5 V to -23 V and supports junction temperatures from 0 °C to +125 °C. Key electrical parameters include a quiescent current of 6 mA at 25 °C, line regulation of 175 mV (VI = -10.5 to -23 V), load regulation of 80 mV (IO = 1 to 100 mA), and supply voltage rejection of 45 dB at 120 Hz. It utilizes a TO-92 package.
Feature Summary
- Integrated thermal overload protection and short-circuit protection for robust operation
- Requires no external components for basic fixed voltage regulation applications
- Offers improved output impedance compared to Zener diode/resistor combinations
Applications
- Local or on-card regulation for noise elimination
- Replacement for Zener diode/resistor combinations in power supplies
- Building high-current voltage regulators using power pass elements
Procurement Notes
Verify the specific suffix 'AP' against official ST documentation to confirm packaging details, as standard datasheets list 'ACZ' for bag packing and 'ABZ-AP' for tape and reel. Ensure the ordering code matches the required environmental compliance grade and package variant before finalizing procurement.
Selection Notes
Select this component for applications requiring a stable -8 V negative rail with currents up to 100 mA. The AC tolerance indicates ±5% output voltage accuracy. Consider the thermal resistance of the TO-92 package when designing heat dissipation strategies for continuous operation near maximum ratings.
Part Context
This part belongs to the L79Lxx family of three-terminal negative regulators. The series includes variants for -5 V, -8 V, -12 V, and -15 V outputs. The L79L series is designed for general-purpose regulation tasks where low component count and inherent protection features are prioritized over high-efficiency switching topologies.
Replacement Considerations
Compatible substitutes within the same family include L79L08ACZ and L79L08ACD13TR. Verify pinout compatibility and thermal characteristics when substituting between different package types such as TO-92 and SO-8.
