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Product Detailed Parameters
- Description：IC REG LINEAR 15V 100MA 8-SOIC
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：35V
- Voltage - Output (Min/Fixed)：15V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：100mA
- Current - Quiescent (Iq)：6 mA
- Current - Supply (Max)：6.5 mA
- PSRR：39dB (120Hz)
- Control Features：-
- Protection Features：Over Current, 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 L78L15ABD is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, designed for fixed voltage regulation. It provides a nominal output of 15 V with an accuracy of ±4% (indicated by the 'A' suffix). The device supports a maximum output current of 100 mA and operates within an extended junction temperature range of -40 °C to +125 °C. It accepts input voltages up to 35 V and features internal thermal overload protection and short-circuit limiting.
Feature Summary
- Incorporates internal current limiting and thermal shutdown mechanisms for robust operation under fault conditions.
- Provides fixed voltage regulation without requiring external components.
- Offers improved performance over Zener diode/resistor combinations with lower quiescent current and noise.
Applications
- Local or on-card voltage regulation
- Replacement for Zener diode and resistor combinations
- Building high-current regulators when used with power pass elements
Procurement Notes
Verify that the ordering suffix corresponds to the required package type and tolerance grade. Confirm the specific revision level matches design requirements. Ensure the component is sourced from authorized distributors to guarantee authenticity and traceability. Check datasheet specifications against application constraints before finalizing procurement.
Selection Notes
Select this variant for applications requiring a 15 V output with ±4% precision. The 'AB' designation indicates suitability for extended temperature ranges compared to standard 'AC' versions. Consider thermal management strategies as power dissipation increases with higher load currents or input-output voltage differentials.
Part Context
This component belongs to the L78Lxx family of low-current positive voltage regulators. It shares functional similarities with other members like L78L05 or L78L12 but differs in output voltage and tolerance. The 'D' suffix typically denotes surface-mount packaging, distinguishing it from through-hole variants.
Replacement Considerations
Direct replacements include other L78L15 variants such as L78L15AC or L78L15CT depending on package and tolerance needs. Verify pinout compatibility and thermal characteristics when substituting.
