Choose your country or region.

EnglishFrançaispolskiSlovenija한국의DeutschSvenskaSlovenskáMagyarországItaliaहिंदीрусскийTiếng ViệtSuomiespañolKongeriketPortuguêsภาษาไทยБългарски езикromânescČeštinaGaeilgeעִבְרִיתالعربيةPilipinoDanskMelayuIndonesiaHrvatskaفارسیNederlandTürk diliΕλλάδαRepublika e ShqipërisëአማርኛAzərbaycanEesti VabariikEuskeraБеларусьíslenskaBosnaAfrikaansIsiXhosaisiZuluCambodiaსაქართველოҚазақшаAyitiHausaКыргыз тилиGalegoCatalàCorsaKurdîLatviešuພາສາລາວlietuviųLëtzebuergeschmalaɡasʲМакедонскиMaoriМонголулсবাংলা ভাষারမြန်မာनेपालीپښتوChicheŵaCрпскиSesothoසිංහලKiswahiliТоҷикӣاردوУкраїнаO'zbekગુજરાતીಕನ್ನಡkannaḍaதமிழ் மொழி繁体中文
Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) - Voltage Regulators - Linear, Low Drop Out (LDO) Regulators > L7908CV
STMicroelectronics
497~TO220-3TO220AB~~3.jpg ImageView larger image
Image may be representation.
See specs for product details.

L7908CV

In Stock 88791 pcs Reference Price(In US Dollars)
1+
$0.1968
Manufacturer Part Number:
L7908CV
Manufacturer / Brand
STMicroelectronics
Part of Description:
IC REG LINEAR -8V 1.5A TO220AB
Datasheets:
L7908CV(1).pdfL7908CV(2).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 88791 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

Inquiry Online

Please complete all required fields with your contact information.Click "SUBMIT REQUEST" we will contact you shortly by email. Or Email us: Info@IC-Components.com
Part Number
Manufacturer
Require Quantity
Target Price(USD)
Company Name
Contact Name
E-mail
Phone
Message
Please enter Verify Code and click "Submit"
Part Number L7908CV
Manufacturer / Brand STMicroelectronics
Stock Quantity 88791 pcs Stock
Category Integrated Circuits (ICs) > Power Management (PMIC) - Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Description IC REG LINEAR -8V 1.5A TO220AB
Lead Free Status / RoHS Status: ROHS3 Compliant
RFQ L7908CV Datasheets L7908CV Details PDF
L7908CV Details PDF for KR.pdf
L7908CV Details PDF for IT.pdf
L7908CV Details PDF for DE.pdf
L7908CV Details PDF for FR.pdf
L7908CV Details PDF for ES.pdf
Voltage Dropout (Max) 1.1V @ 1A (Typ)
Voltage - Output (Min/Fixed) -8V
Voltage - Output (Max) -
Voltage - Input (Max) -35V
Supplier Device Package TO-220
Series -
Protection Features Over Temperature, Short Circuit
Package / Case TO-220-3
Package Tube
PSRR 60dB (120Hz)
Output Type Fixed
Output Configuration Negative
Operating Temperature 0°C ~ 125°C
Number of Regulators 1
Mounting Type Through Hole
Current - Quiescent (Iq) 3 mA
Current - Output 1.5A
Control Features -
Base Product Number L7908

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

PayPal:

PayPal Bank Information:
Company Name : IC COMPONENTS LTD
Paypal ID: PayPal@IC-Components.com

BANK TRANSFAR (Telegraphic Transfer)

Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


L7908CV Product Details:

The STMicroelectronics L7908CV is a high-performance linear voltage regulator designed for precise and stable negative voltage regulation in electronic systems. This integrated circuit is part of the renowned 78xx series of voltage regulators, specifically engineered to provide a fixed -8V output with robust performance characteristics.

As a negative linear voltage regulator, the L7908CV is capable of delivering a consistent -8V output with a maximum current output of 1.5A, making it suitable for a wide range of electronic applications requiring stable negative voltage supply. The device is designed with advanced protection features, including over-temperature and short-circuit protection, ensuring reliable operation under various conditions.

The regulator is housed in a through-hole TO-220AB package, which facilitates easy mounting and heat dissipation in electronic circuits. It operates efficiently across a temperature range of 0°C to 125°C, providing versatility for different environmental conditions. With a low quiescent current of 3mA and an impressive power supply rejection ratio (PSRR) of 60dB, the L7908CV offers excellent performance and noise reduction.

Key advantages of this voltage regulator include its lead-free and RoHS-compliant design, a voltage dropout of just 1.1V at 1A, and compatibility with input voltages up to -35V. These characteristics make it ideal for applications in consumer electronics, automotive systems, industrial control equipment, and precision instrumentation where stable negative voltage regulation is critical.

Equivalent or alternative models in the same product family include other members of the 78xx series voltage regulators, such as the L7905CV (-5V), L7912CV (-12V), and L7915CV (-15V), which offer similar design principles with different fixed output voltages.

This versatile linear voltage regulator provides engineers and designers with a reliable, efficient, and protected solution for generating stable negative voltage supplies in a compact and easy-to-implement package.

L7908CV Image
L7908CV (1)

L7908CV Key Technical Attributes

Manufacturer Part Number: L7908CV

Manufacturer: STMicroelectronics

Package / Case: TO-220-3

L7908CV Packing Size

Type: Tube

Material: Plastic encapsulation

Size: TO-220AB

Pin Configuration: 3-pin

Thermal Characteristics: High thermal performance

Electrical Properties: Voltage Dropout (Max): 1.1V @ 1A (Typ)

L7908CV Application

Designed for use in various electronic applications requiring a stable -8V output, including but not limited to power supplies, instrumentation, and automation systems.

L7908CV Features

The L7908CV from STMicroelectronics is a Linear Voltage Regulator IC, specifically providing a negative fixed output of -8V with an output current capability of 1.5A. It operates efficiently with an input voltage maximum of -35V. With a quiescent current of 3mA and a power supply rejection ratio (PSRR) of 60dB at 120Hz, this component ensures reduced noise and improved performance stability. The device's voltage regulator stabilizes to offer consistent performance under varying conditions, accommodating an operating temperature range from 0°C to 125°C.

L7908CV Quality and Safety Features

The L7908CV is designed with safety in mind, featuring protection against over-temperature and short circuits. It comes in a RoHS-compliant TO-220AB package, ensuring that it meets current environmental standards regarding hazardous substances.

L7908CV Compatibility

This IC is primarily geared towards systems needing stable negative voltage regulation, capable of driving up to 1.5A of current. Its through-hole mounting design allows for robust and secure installation on various types of circuit boards.

L7908CV Datasheet PDF

For the most accurate and detailed information regarding the L7908CV Linear Voltage Regulator, customers are encouraged to download the official datasheet available on our website. It contains all necessary specifications and guidelines for effective application.

Quality Distributor

IC-Components stands out as a premium distributor for STMicroelectronics, ensuring that you receive authentic and high-quality components every time. For the L7908CV and other electronics components needs, obtain a quote directly on our website and experience top-tier customer service and support.

Frequently Asked Questions

I'm designing a negative rail power supply for a sensor interface requiring a stable -8V output at 1A. Can the STMicroelectronics L7908CV handle this current requirement reliably within its specified operating temperature range of 0°C to 125°C, considering potential thermal dissipation issues in a compact enclosure?
Yes, the L7908CV is designed for an output current of up to 1.5A, so a 1A continuous load is well within its operational limits. However, proper thermal management is crucial. At 1A output and an input voltage close to the maximum of -35V, the voltage dropout of approximately 1.1V will result in significant power dissipation (P = Vdropout * Iout ≈ 1.1V * 1A = 1.1W). To ensure reliable operation within the 0°C to 125°C ambient temperature range and prevent exceeding the junction temperature limits, a heatsink for the TO-220AB package of the L7908CV is highly recommended, especially in a confined space.
My existing design uses a legacy negative voltage regulator that is no longer readily available. I need to find a direct, pin-compatible replacement for -8V and 1.5A capability. Is the STMicroelectronics L7908CV a suitable drop-in replacement for older parts like the [mention a hypothetical older part number if you have one, e.g., LM7908CT], and what are the key differences in terms of dropout voltage and thermal performance?
The L7908CV is a standard TO-220-3 package with a fixed -8V output and a 1.5A capability, making it a strong candidate for replacing older -8V linear regulators. While it is pin-compatible with many common TO-220 negative regulators, always verify the pinout of your existing part against the L7908CV datasheet. The typical dropout voltage for the L7908CV is around 1.1V at 1A, which is competitive. Key considerations when migrating to the L7908CV would include confirming input voltage range (up to -35V for L7908CV) and ensuring your existing thermal design can accommodate its dissipation characteristics.
I'm integrating the STMicroelectronics L7908CV into a system where the input voltage can fluctuate but will not exceed -35V. What is the minimum input voltage required for the L7908CV to maintain a stable -8V output under a 1A load, and how does this affect the power dissipation of the regulator?
To maintain a stable -8V output with the L7908CV, the input voltage must be at least the output voltage plus the maximum dropout voltage. At a 1A load, the L7908CV has a typical dropout voltage of 1.1V. Therefore, the minimum stable input voltage would be approximately -8V + 1.1V = -9.1V. It's prudent to maintain a buffer, so an input of at least -9.5V or -10V is advisable. The power dissipation is directly proportional to the dropout voltage, so a lower input voltage (closer to -9.1V) will result in lower power dissipation and less heat generated by the L7908CV.
In a high-reliability industrial application with continuous operation, I need to understand the long-term reliability of the STMicroelectronics L7908CV, particularly concerning its over-temperature and short-circuit protection features. How robust are these protection mechanisms, and what are the typical recovery behaviors after an fault condition is cleared?
The L7908CV features built-in over-temperature and short-circuit protection, which are designed to enhance reliability in demanding industrial applications. The over-temperature protection will shut down the regulator if the junction temperature exceeds a safe limit, preventing permanent damage. Short-circuit protection limits the output current to a safe level. Both protections are typically self-resetting; once the fault condition (over-temperature or short circuit) is removed and the device cools down, the L7908CV will resume normal operation without manual intervention. However, repeated thermal cycling or prolonged exposure to fault conditions can still degrade the device over time.
I'm looking at different -8V linear regulators for a new design. Besides the STMicroelectronics L7908CV, there are parts like the [mention a hypothetical competitor part number if you have one, e.g., LM7908 from Texas Instruments]. What are the key trade-offs in terms of quiescent current, PSRR, and voltage dropout when comparing the L7908CV to alternatives like the LM7908, and which might be better suited for a battery-powered application with limited noise sensitivity?
When comparing the L7908CV to alternatives like the LM7908, consider the quiescent current (Iq) and Power Supply Rejection Ratio (PSRR). The L7908CV has a quiescent current of 3mA, which is a factor in battery-powered devices. The LM7908 typically has a similar quiescent current. The L7908CV offers a PSRR of 60dB at 120Hz, which is moderate. If very low quiescent current is critical for battery life, you might explore ultra-low Iq regulators, though they often have lower current capabilities or higher dropout voltages. For applications where noise is not a primary concern and a straightforward, robust -8V output is needed, the L7908CV is a solid choice. The choice between these parts will often come down to specific price points, availability, and minor performance differences in dropout or PSRR.
I need to supply a stable -8V to a sensitive analog front-end where input voltage ripple can be significant. How effective is the STMicroelectronics L7908CV in rejecting AC noise from the input supply, and would I need additional filtering components when using the L7908CV?
The L7908CV has a Power Supply Rejection Ratio (PSRR) of 60dB at 120Hz. This indicates a good level of rejection for low-frequency ripple. However, for higher frequency noise or very significant input ripple, additional filtering is often beneficial. A common practice when using linear regulators like the L7908CV in noisy environments is to place an input capacitor (e.g., 0.1µF to 1µF ceramic) close to the input pin to bypass high frequencies, and an output capacitor (e.g., 1µF to 10µF tantalum or ceramic) to improve transient response and stability. Consult the L7908CV datasheet for recommended capacitor values to ensure optimal performance and stability.
I'm designing a system that operates from a single supply and requires both a positive and a negative rail. Can the STMicroelectronics L7908CV be used in conjunction with a positive voltage regulator (e.g., a 78xx series) to create a split rail power supply, and are there any specific design considerations for the input voltage range and grounding when using the L7908CV for the negative rail?
Yes, the STMicroelectronics L7908CV is commonly used in conjunction with positive voltage regulators to create split rail power supplies. For instance, you might pair it with a 7808 to generate +8V and -8V rails. When designing, ensure the input voltage to the L7908CV is sufficiently negative (at least ~ -9.1V minimum, and ideally -10V or more for buffer) relative to ground, and that the input to the positive regulator is appropriately positive. The key consideration is the separation of these voltage domains and ensuring the ground reference for both regulators is common or properly defined. The L7908CV has a maximum input voltage of -35V.

Recent Reviews

Leave Comment
Hello, you have not logged in, please log in
User Login

Forgot password?

No account yet? Register now

Tips
Please speak legally
Your email will be hidden
Please complete all required fields ( denoted with* )
Mark
5.0

You May Also Be Interested In:


L7908CV

L7908CV

STMicroelectronics

IC REG LINEAR -8V 1.5A TO220AB

In Stock: 88791

SUBMIT RFQ