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Product Detailed Parameters
- Description：IC REG LINEAR -5V 100MA 8-SOIC
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Negative
- 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 Temperature, Short Circuit
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The L79L05ACD13TR is a three-terminal negative linear voltage regulator from the L79L series, manufactured by STMicroelectronics. It provides a fixed output voltage of -5V with a maximum output current capability of 100 mA. The device operates within an input voltage range up to -30 V and features internal thermal overload protection and short-circuit protection. It is housed in an 8-pin SOIC surface-mount package (SO-8) with dimensions of approximately 5 mm x 6 mm. The component supports an operating junction temperature range of 0°C to 125°C for the AC grade.
Feature Summary
- Internal current limiting and thermal shutdown mechanisms ensure robust operation under fault conditions.
- Designed as a fixed voltage regulator requiring no external components for basic functionality.
- Offers improved effective output impedance compared to Zener diode/resistor combinations.
Applications
- Local or on-card regulation for eliminating noise associated with single-point regulation.
- Replacement for Zener diode and resistor combinations in low-noise applications.
- Use with power pass elements to construct high-current voltage regulators.
Procurement Notes
Verify the specific suffix 'AC' indicates ±5% output voltage tolerance and confirm the 'D13TR' designation corresponds to the SO-8 tape and reel packaging format. Ensure compatibility with the required -5V negative rail specification and check that the 0°C to 125°C commercial temperature range meets the application's environmental constraints before finalizing procurement.
Selection Notes
Select this component when a fixed -5V negative supply is required with moderate current demands up to 100 mA. The SO-8 package is suitable for surface-mount assembly where space efficiency is prioritized over the higher thermal dissipation capabilities of through-hole packages like TO-92. Consider the AC grade tolerance if tighter voltage accuracy than the standard C grade is necessary.
Part Context
This part belongs to the L79L series of three-terminal negative regulators, which are designed for general-purpose voltage regulation tasks. The series includes variants for different output voltages (-5V, -8V, -12V, -15V) and packages (TO-92, SOT-89, SO-8). The L79L05ACD13TR specifically represents the -5V output version in the SO-8 surface-mount configuration.
Replacement Considerations
Publicly confirmed substitute part numbers include MC79L05ABDR2G from onsemi and LM79L05ACMX/NOPB from Texas Instruments. Verify pinout compatibility and thermal performance characteristics when substituting.
