L7918CV

L7918CV - Linear Voltage Regulators
7,080 Effective Inventory

L7918CV

Effective Inventory7,080

L7918CV - Linear Voltage Regulators

  • Manufacturer Part # : L7918CV

  • Package/Case: TO-220

  • Brand: STMicroelectronics

  • Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

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Service & Packaging

Service & Packaging

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L7918CV DataSheet
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Please submit RFQ for L7918CV or email to us: Email: [email protected], we will contact you in 12 hours.

Details

The L7918CV is a reliable and versatile fixed voltage regulator IC from STMicroelectronics, perfect for a wide range of electronic applications. With its ability to regulate input voltages up to 35V down to a fixed output voltage of -18V and an output current capability of 1.5A, this IC is a dependable choice for various industrial, automotive, and consumer electronic designs

Key Features

  • Positive voltage regulator
  • Output current up to 1.5A
  • Fixed output voltage of -18V
  • Thermal protection
  • Internal current limiting
  • Output voltage accuracy of ±2%

Application

  • Industrial power supplies
  • DC/DC converters
  • Regulated power supplies
  • Automotive applications
  • Telecommunication equipment
  • Portable devices
  • Consumer electronics
  • Medical equipment
  • Computer peripherals

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Rohs Code No Part Life Cycle Code Obsolete
Part Package Code SFM Pin Count ! 3
Reach Compliance Code ECCN Code EAR99
HTS Code ! 8542.39.00.01 Adjustability FIXED
Dropout Voltage1-Nom 1.1 V Input Voltage Absolute-Max 35 V
Input Voltage-Max 33 V Input Voltage-Min 21 V
JESD-30 Code R-XSFM-T3 JESD-609 Code e0
Line Regulation-Max 0.36% Load Regulation-Max 0.36%
Number of Functions 1 Number of Outputs 1
Number of Terminals 3 Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min Output Current1-Max 1.5 A
Output Voltage1-Max 18.9 V Output Voltage1-Min 17.1 V
Output Voltage1-Nom 18 V Package Body Material UNSPECIFIED
Package Code TO-220 Package Equivalence Code SIP3,.1TB
Package Shape RECTANGULAR Package Style FLANGE MOUNT
Qualification Status ! Not Qualified Regulator Type FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR
Surface Mount ! NO Technology BIPOLAR
Terminal Finish Tin/Lead (Sn/Pb) Terminal Form ! THROUGH-HOLE
Terminal Pitch ! 2.54 mm Terminal Position SINGLE
Voltage Tolerance-Max 5%

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification L7918CV PDF Download

FAQs

What is L7918CV?

The L7918CV is a three-terminal negative voltage regulator designed by STMicroelectronics. It is part of the L79 series of voltage regulators and is capable of providing a fixed output voltage of -18V with a maximum output current of 1.5A. The L7918CV is commonly used in applications where a stable negative voltage supply is required, such as in analog circuits, test and measurement equipment, and industrial control systems.

How Does L7918CV Work?

The L7918CV operates as a linear voltage regulator by maintaining a fixed output voltage of -18V regardless of changes in input voltage or load conditions. It uses an internal voltage reference and feedback control loop to achieve regulation, ensuring that the output voltage remains constant within specified tolerances. The regulator also includes overcurrent and thermal protection features to safeguard the connected circuitry.

How Many Pins does L7918CV have and What are the Functions of the Pinout Configuration?

The L7918CV is housed in a TO-220 through-hole package. The pinout configuration includes:

  • Input (VIN): The input voltage pin.
  • Common (COM): Common ground pin.
  • Output (VOUT): The regulated output voltage pin (-18V).

What are the Pros and Cons of L7918CV?

Pros:

  • Fixed Output Voltage: Provides a stable -18V output voltage, suitable for applications requiring a negative voltage rail.
  • High Output Current: Capable of delivering up to 1.5A of output current for moderately demanding loads.
  • Thermal Protection: Includes built-in thermal shutdown protection to prevent overheating.
  • Simple to Use: Requires minimal external components for operation, contributing to ease of design and implementation.

Cons:

  • Power Dissipation: May require a heatsink for higher load currents to dissipate heat effectively.
  • Fixed Voltage: The output voltage is fixed at -18V and cannot be adjusted externally.

Are There Any Equivalents/Alternatives to L7918CV for Recommendation?

Alternatives to the L7918CV include the LM7918 from Texas Instruments and the UA7918 from Fairchild Semiconductor, which are also three-terminal negative voltage regulators with similar specifications.

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