ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LINEAR 12V 500MA TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：35V
- Voltage - Output (Min/Fixed)：12V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：500mA
- Current - Quiescent (Iq)：6 mA
- Current - Supply (Max)：-
- PSRR：55dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
Download product information
Overview
The L78M12ABV is a three-terminal positive linear voltage regulator from the L78MxxA series by STMicroelectronics. It provides a fixed output voltage of 12 V with a maximum output current of 0.5 A. The device operates within an input voltage range of 14.5 V to 30 V and supports junction temperatures from -40 °C to +125 °C. Electrical characteristics include a line regulation of 30 mV (VI = 16 to 30 V, IO = 200 mA) and load regulation of 120 mV (IO = 5 to 200 mA). Quiescent current is typically 6 mA at 25 °C.
Feature Summary
- Provides local on-card regulation to eliminate distribution problems associated with single-point regulation.
- Features internal thermal overload protection that shuts down the circuit during excessive power conditions.
- Includes short-circuit protection to limit maximum output current.
- Incorporates output transistor safe-area compensation to reduce output short-circuit current as voltage across the pass transistor increases.
Applications
- Local on-card voltage regulation
- Current regulator circuits using external components
- Adjustable output regulator configurations
Procurement Notes
Verify the specific suffix 'V' against official documentation to confirm package type and environmental compliance grade. Ensure the ordering code matches the required temperature range (-40 °C to +125 °C) for the AB variant. Confirm RoHS status and ECOPACK specifications directly from the manufacturer's datasheet before procurement.
Selection Notes
Select this component for applications requiring a fixed 12 V output with up to 0.5 A current capability. The extended temperature range (-40 °C to +125 °C) makes it suitable for industrial environments. Consider the TO-220 package thermal resistance if heat sinking is not provided, as the device relies on internal protection for overload conditions.
Part Context
This part belongs to the L78MxxA precision regulator family, which offers ±2% output voltage tolerance. The series includes various fixed output voltages such as 5 V, 6 V, 8 V, 9 V, 10 V, 12 V, 15 V, and 24 V. These regulators are designed to be essentially indestructible due to their comprehensive internal protection features.
Replacement Considerations
L78M12AC
FAQ
What is the quiescent current of the L78M12ABV?
The typical quiescent current is 6 mA at a junction temperature of 25 °C.
How does the device handle short-circuit conditions?
The regulator employs internal short-circuit protection that limits the maximum current the circuit will pass, preventing damage to the device.
