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Product Detailed Parameters
- Description：IC REG LINEAR 15V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Bulk
- 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：0°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The L78L15ACZ is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, housed in a TO-92 package. It provides a fixed output voltage of 15 V with an output current capability up to 100 mA. The device features internal current limiting and thermal shutdown protection. Electrical characteristics include a maximum input voltage of 35 V, a quiescent current of 6.5 mA at 25 °C, and a dropout voltage of 1.7 V. Line regulation is specified at 300 mV (VI = 17.5 to 30 V) and load regulation at 150 mV (IO = 1 to 100 mA).
Feature Summary
- Integrated thermal overload protection prevents damage during excessive temperature conditions.
- Built-in short-circuit protection limits output current to safeguard the component and external circuitry.
- Internal current limiting ensures stable operation without requiring external protective components.
Applications
- Local or on-card voltage regulation for electronic circuits.
- Replacement for Zener diode and resistor combinations to reduce noise.
- Power pass element integration for constructing high-current voltage regulators.
Procurement Notes
Verify that the ordering suffix 'Z' corresponds to the TO-92 through-hole package configuration. Confirm the 'AC' designation matches the required ±4% output voltage tolerance specification. Ensure the procurement documentation explicitly references the L78L15 model to distinguish it from other fixed voltage variants within the L78L family.
Selection Notes
Select this component when a fixed 15 V output is required with a maximum load current of 100 mA. The TO-92 package is suitable for applications where space constraints allow for through-hole mounting. Consider the thermal resistance characteristics if operating near the maximum junction temperature limit of 125 °C under continuous load conditions.
Part Context
This part belongs to the L78Lxx series of three-terminal positive regulators designed for low-power applications. The series offers various fixed output voltages ranging from 3.3 V to 24 V. The L78L15ACZ specifically targets designs needing a 15 V rail with moderate current requirements and integrated safety features.
Replacement Considerations
- LM78L15ACZ
FAQ
What is the maximum DC input voltage allowed for the L78L15ACZ?
The absolute maximum DC input voltage is 35 V.
Does the L78L15ACZ require external capacitors for stability?
No external components are strictly required for basic operation, though typical application circuits often include input and output capacitors for improved transient response and ripple rejection.
