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Product Detailed Parameters
- Description：IC REG LINEAR -15V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Negative
- 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 Temperature, Short Circuit
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
Download product information
Overview
The L79L15ACZ-TR is a three-terminal negative voltage regulator from the STMicroelectronics L79L series, providing a fixed output of -15 V with an output current capability up to 100 mA. It operates within a maximum input voltage range of -35 V and features a dropout voltage of 1.7 V. The device incorporates internal thermal overload protection and short-circuit protection. It is available in TO-92 packaging and offers an output tolerance of ±5%.
Feature Summary
- Internal current limiting and thermal shutdown mechanisms ensure robust operation under fault conditions.
- Designed as a direct replacement for Zener diode/resistor combinations, offering significantly improved output impedance and lower noise.
- Requires no external components for basic fixed voltage regulation functionality.
Applications
- Local or on-card regulation to eliminate distribution problems associated with single-point regulation.
- Power supply circuits requiring stable negative voltage rails.
- Noise-sensitive applications where low quiescent current and low noise are required.
Procurement Notes
Verify that the ordering suffix matches the required package type and tape-and-reel configuration. Confirm the AC selection variant corresponds to the specified ±5% output voltage tolerance. Ensure the component meets the required operating temperature range for the specific application environment before procurement.
Selection Notes
Select this component when a fixed -15 V negative rail is needed with currents up to 100 mA. Consider the TO-92 package for through-hole mounting. Evaluate thermal dissipation requirements based on the input-output voltage differential and load current to determine if adequate heat sinking is necessary for continuous operation.
Part Context
This part belongs to the L79Lxx series of three-terminal negative regulators. The series includes various fixed output voltages such as -5 V, -6 V, -8 V, -9 V, -12 V, and -15 V. These regulators are designed for general-purpose power management tasks in electronic equipment requiring reliable negative voltage sources.
Replacement Considerations
L79L15CZ
FAQ
What is the output voltage tolerance for the L79L15ACZ-TR?
The L79L15ACZ-TR has an output voltage tolerance of ±5%.
Does the L79L15ACZ-TR require external components for regulation?
No external components are required for basic fixed voltage regulation, although capacitors may be added for stability depending on the application.
