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Product Detailed Parameters
- Description：IC REG LINEAR 9V 500MA DPAK
- 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)：9V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：500mA
- Current - Quiescent (Iq)：6 mA
- Current - Supply (Max)：-
- PSRR：56dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
Download product information
Overview
The L78M09ABDT-TR is a three-terminal positive linear voltage regulator from the L78MxxA series by STMicroelectronics. It provides a fixed output voltage of 9 V with an output current capability up to 0.5 A. The device operates within a DC input voltage range of 11.5 V to 24 V and supports an operating junction temperature range of -40 °C to 125 °C. It features ±2% output voltage tolerance, internal thermal overload protection, short-circuit protection, and safe area protection.
Feature Summary
- Integrates internal current limiting, thermal shutdown, and safe area protection for robust operation.
- Provides local on-card regulation to eliminate distribution problems associated with single-point regulation.
- Capable of delivering up to 0.5 A output current with high precision.
Applications
- Local on-card voltage regulation
- General-purpose power supply circuits
- Battery-powered systems
Procurement Notes
Verify that the component matches the specific L78MxxA series specifications, particularly the 9 V output and DPAK package. Confirm the suffix 'TR' indicates tape and reel packaging if required for automated assembly. Ensure the AB grade is selected for the guaranteed extended temperature range of -40 °C to 125 °C. Cross-reference the datasheet revision to ensure compatibility with design requirements.
Selection Notes
Select this regulator when a fixed 9 V output at up to 0.5 A is required in a surface-mount DPAK package. The AB variant is suitable for applications requiring operation down to -40 °C. Consider the dropout voltage of approximately 2 V when determining the minimum input voltage. This device is appropriate for designs needing built-in thermal and short-circuit protection without external components.
Part Context
This component belongs to the L78MxxA series of three-terminal positive regulators. The series is available in TO-220 and DPAK packages with various fixed output voltages including 5, 6, 8, 9, 10, 12, 15, and 24 V. The L78MxxA series is designed for applications requiring reliable local regulation with integrated protection features.
Replacement Considerations
L78M09ACDT-TR (AC grade, 0°C to 125°C), L78M09CDT-TR (Standard C grade)
FAQ
What is the maximum output current for the L78M09ABDT-TR?
The maximum output current is 0.5 A.
Does the L78M09ABDT-TR include protection features?
Yes, it includes internal current limiting, thermal shutdown, and output transistor safe-area compensation.
