L78S18CV
- Mfr.Part #
- L78S18CV
- Manufacturer
- STMicroelectronics
- Package / Case
- TO-220-3
- Datasheet
- Download
- Description
- IC REG LINEAR 18V 2A TO220AB
- Stock
- 50
- In Stock :
- 50
Request A Quote(RFQ)
- * Fullname:
- * Company:
- * E-Mail:
- Phone:
- Comment:
- * Quantity:
- Manufacturer :
- STMicroelectronics
- Product Category :
- Voltage Regulators - Linear
- Mounting Type :
- Through Hole
- Min Output Voltage :
- 18V
- Package / Case :
- TO-220-3
- Voltage - Input (Max) :
- 35V
- PSRR :
- 43dB (120Hz)
- Lifecycle Status :
- ACTIVE (Last Updated: 7 months ago)
- Nominal Output Voltage :
- 18V
- Factory Lead Time :
- 24 Weeks
- Terminal Pitch :
- 2.54mm
- Power Supply Rejection Ratio (PSRR) :
- 49dB
- Number of Functions :
- 1
- Radiation Hardening :
- No
- Pin Count :
- 3
- RoHS Status :
- ROHS3 Compliant
- REACH SVHC :
- No SVHC
- Tolerance :
- 5%
- Output Voltage :
- 18V
- Min Input Voltage :
- 21V
- Packaging :
- Tube
- Quiescent Current :
- 8mA
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Number of Regulators :
- 1
- Output Configuration :
- Positive
- Mount :
- Through Hole
- Number of Outputs :
- 1
- JESD-609 Code :
- e3
- Lead Free :
- Lead Free
- Dropout Voltage :
- 3V
- Output Type :
- FIXED
- Base Part Number :
- L78S18
- Number of Pins :
- 3
- Terminal Position :
- Single
- Number of Terminations :
- 3
- Dropout Voltage1-Nom :
- 2.5V
- Operating Temperature :
- 0°C~150°C
- Protection Features :
- Over Current, Over Temperature, Short Circuit
- Height :
- 15.75mm
- Output Voltage 1 :
- 18V
- Max Output Current :
- 2A
- ECCN Code :
- EAR99
- Length :
- 10.4mm
- Terminal Finish :
- Matte Tin (Sn)
- Width :
- 4.6mm
- Datasheets
- L78S18CV

[Voltage Regulators - Linear] STMicroelectronics L78S18CV Overview
The STMicroelectronics L78S18CV is a reliable and efficient linear voltage regulator integrated circuit designed to deliver a steady output voltage of 18V with a maximum current of 2A. With its TO220AB package, this regulator offers easy integration into various electronic circuits, making it an ideal choice for power supply applications in industrial, automotive, and consumer electronics.
Featuring advanced technology and robust design, the L78S18CV ensures stable performance and precise voltage regulation, meeting the stringent requirements of professional electronic systems. Its high efficiency and low dropout voltage make it suitable for both linear and switching power supply designs.
L78S18CV Features
- Stable Output Voltage: Provides a constant output voltage of 18V, ensuring reliable performance in diverse applications.
- High Current Capability: Capable of delivering up to 2A of current, suitable for powering various electronic devices and circuits.
- Low Dropout Voltage: Ensures efficient power conversion with minimal voltage loss, enhancing overall system efficiency.
- Wide Operating Temperature Range: Performs reliably across a temperature range of -40°C to 125°C, making it suitable for harsh environmental conditions.
- Short Circuit and Thermal Protection: Offers protection against short circuits and thermal overload, ensuring safe operation and longevity of connected devices.
L78S18CV Applications
- Industrial Equipment: The L78S18CV is commonly used in industrial automation systems, PLCs (Programmable Logic Controllers), and motor control circuits to provide stable power supply voltage, ensuring smooth operation and reliability.
- Automotive Electronics: This voltage regulator is employed in automotive electronic systems, including engine control units (ECUs), infotainment systems, and lighting modules, to maintain a constant voltage level for sensitive components, ensuring optimal performance and longevity.
- Consumer Electronics: From televisions and audio amplifiers to home appliances and portable devices, the L78S18CV finds its place in a wide range of consumer electronics applications, providing a stable power source for integrated circuits, displays, and peripherals.
In industrial equipment such as automated manufacturing machinery, the L78S18CV regulates the voltage supplied to control circuits, sensors, and actuators, enabling precise control and synchronization of production processes.
In automotive applications, the L78S18CV powers microcontrollers, sensors, and communication modules, supporting various vehicle functions such as engine management, safety systems, and entertainment features.
In consumer electronics, the L78S18CV regulates the voltage supplied to microcontrollers, sensors, and communication interfaces, ensuring reliable operation and optimal performance of electronic devices in diverse usage scenarios.
You may place an order without registering to Chip IC. We strongly recommend that you log in before purchasing as you can track your order at any time.
RFQ (Request for Quotations)It is recommended to send RFQ to get the latest prices and stock availability about the part.Our sales will reply to your inquiry within 24 hours.
Payment MethodFor your convenience, we accept multiple payment methods in USD, Such as:PayPal, Credit Card, and wire transfer.
IMPORTANT NOTICEYou may place an order without registering to 1. You'll receive an order confirmations by e-mail soon . (Please remember to check the spam box if you didn't hear from us). 2. Since stock availability and prices may change at any time, the sales will reconfirm the order details and update you at soonest time.
Most of our products are shipped via FEDEX,DHL,UPS and SF EXPRESS...
Shipping CostShipping Cost starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).If customer have shipping account, we can make shipment under customer’s shipping account with freight collect directly.
The basic freight (for package ≤0.5 KG ) depends on the time zones and countries
Once the goods are shipped, estimated delivery time depends on the shipping methods you chose. You can track it by the tracking no.
















