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Product Detailed Parameters
- Description：IC REG LINEAR -5V 100MA 8-SOIC
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- 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：-40°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 L79L05ABD is a three-terminal negative voltage regulator from the L79L series by STMicroelectronics. It provides a fixed output voltage of -5 V with a maximum output current of 100 mA. The device features internal thermal overload protection and short circuit protection, making it robust for local or on-card regulation applications. It operates within an extended temperature range of -40°C to +125°C. The component is housed in an SO-8 surface-mount package.
Feature Summary
- Integrated thermal overload and short circuit protection mechanisms ensure operational reliability under fault conditions.
- Designed as a direct replacement for Zener diode/resistor combinations, offering significantly lower effective output impedance and reduced noise.
- Capable of delivering up to 100 mA output current when adequate heat sinking is provided.
Applications
- Local or on-card voltage regulation
- Elimination of noise associated with single-point regulation
- Replacement for Zener diode and resistor networks
Procurement Notes
Verify that the specific part number matches the required package type and accuracy grade. Confirm that the ordering suffix corresponds to the intended packaging format, such as tube or tape and reel, as these do not alter the electrical function but affect handling and assembly processes.
Selection Notes
Select this component for designs requiring a stable negative supply rail with moderate current demands. Ensure the input voltage remains within absolute maximum ratings to prevent damage. Consider the thermal resistance characteristics of the SO-8 package and implement appropriate copper area heat sinking if operating near the maximum current limit.
Part Context
This component belongs to the L79L00 series of three-terminal negative regulators manufactured by STMicroelectronics. The series includes various fixed output voltages and accuracy grades, such as AC (±5%) and AB (-40°C to 125°C). The L79L05ABD specifically denotes the -5 V output variant in the SO-8 package.
Replacement Considerations
LM79L05ACMX/NOPB
FAQ
What is the operating temperature range for the L79L05ABD?
The L79L05ABD operates within a junction temperature range of -40°C to +125°C.
Does the L79L05ABD require external components for basic operation?
No external components are required for basic regulation, although input and output capacitors are typically recommended for stability as per standard test circuits.
