L7818CV

$0.59

Description：IC REG LINEAR 18V 1.5A TO220
Series：-
Mfr：STMicroelectronics
Package：Tube

SKU:364eb12a305b Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 18V 1.5A TO220
Series：-
Mfr：STMicroelectronics
Package：Tube
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：35V
Voltage - Output (Min/Fixed)：18V
Voltage - Output (Max)：-
Voltage Dropout (Max)：2V @ 1A (Typ)
Current - Output：1.5A
Current - Quiescent (Iq)：8 mA
Current - Supply (Max)：-
PSRR：53dB (120Hz)
Control Features：-
Protection Features：Over Temperature, Short Circuit
Operating Temperature：0°C ~ 125°C
Mounting Type：Through Hole
Package / Case：TO-220-3
Supplier Device Package：TO-220
Grade：-
Qualification：-

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L7818CV

Overview

The L7818CV is a three-terminal positive linear voltage regulator manufactured by STMicroelectronics, delivering a fixed 18V output. It supports up to 1.5A output current with a maximum input voltage of 35V and minimum input of 14V. The device features an 8mA static current and a typical dropout voltage of 2V at 1A. Operating within a temperature range of 0°C to 125°C, it utilizes a TO-220-3 through-hole package.

Feature Summary

Integrated internal current limiting, thermal shutdown, and safe area protection for robust operation.

Applications

Local on-card regulation
Power supplies
Fan cooling

Procurement Notes

Verify component authenticity against official datasheets due to the prevalence of counterfeit parts in the market. Confirm RoHS compliance status and specific manufacturing lot dates if required for environmental regulations. Ensure adequate heat sinking is provided during installation to maintain performance within the specified operating temperature range.

Selection Notes

Select this component when a fixed 18V DC supply is required from a higher voltage source. Verify that the input voltage remains between 14V and 35V to ensure proper regulation. Consider the thermal dissipation requirements based on the load current and ambient temperature to prevent triggering internal thermal shutdown mechanisms.

Part Context

This part belongs to the L78xx series of three-terminal positive regulators. The series offers various fixed output voltages and packages including TO-220, TO-220FP, D2PAK, and DPAK. These regulators are designed to eliminate distribution problems associated with single-point regulation by providing local power conditioning.