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Product Detailed Parameters
- Description：IC REG LINEAR 15V 100MA 8-SOIC
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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)：5.5 mA
- Current - Supply (Max)：6 mA
- PSRR：39dB (120Hz)
- Control Features：-
- Protection Features：Over Current, 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 L78L15CD-TR is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, housed in an SO-8 surface-mount package. It provides a fixed output voltage of 15 V with a maximum output current capability of 100 mA. The device supports a maximum DC input voltage of 35 V and operates within a junction temperature range of 0 to 125 °C. It features internal current limiting and thermal shutdown protection.
Feature Summary
- Integrates internal current limiting and thermal shutdown mechanisms for robust operation.
- Designed as a fixed voltage regulator requiring no external components for basic functionality.
- Capable of local or on-card regulation to eliminate noise associated with single-point distribution.
Applications
- Local or on-card voltage regulation
- Replacement for Zener diode and resistor combinations
- Construction of high-current regulators using power pass elements
Procurement Notes
Verify that the component matches the specific L78L15CD-TR designation, confirming the 'C' suffix indicates ±8% output voltage tolerance and the '-TR' suffix denotes tape-and-reel packaging. Ensure the SO-8 package variant aligns with the required PCB footprint and thermal dissipation strategy for the target application environment.
Selection Notes
Select this component when a fixed 15 V output at up to 100 mA is required in a compact surface-mount form factor. Consider the SO-8 package's thermal resistance characteristics and ensure the input voltage remains within the 35 V absolute maximum rating while maintaining sufficient dropout voltage for stable regulation under expected load conditions.
Part Context
This part belongs to the L78L series of three-terminal positive regulators manufactured by STMicroelectronics. The series includes various fixed output voltages ranging from 3.3 V to 24 V and is available in TO-92, SO-8, and SOT-89 packages. The L78L family is designed for general-purpose linear regulation applications where moderate current and simple implementation are prioritized.
Replacement Considerations
Compatible substitutes include other manufacturers' L78L15 variants in SO-8 packages, such as UA78L15ACPK, provided they meet the same electrical specifications and pinout configuration.
FAQ
What is the output voltage tolerance for the L78L15CD-TR?
The 'C' suffix in the part number indicates an output voltage tolerance of ±8%.
Does the L78L15CD-TR require external capacitors for operation?
No external components are strictly required for basic regulation, though typical application circuits may include input and output capacitors for stability.
What is the maximum input voltage allowed for this regulator?
The maximum DC input voltage is 35 V for the 15 V output version.
