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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

STMicroelectronics L7806CV-DG

Name: L7806CV-DG
Brand: STMicroelectronics
SKU: L7806CV-DG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L7806CV-DG

Manufacturer:: STMicroelectronics

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-220-3

Datasheet:: L7806CV-DG.pdf

Description:: IC REG LINEAR 6V 1.5A TO220

Quantity:: RFQ Add To RFQ list

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Inventory:1,090

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Product details

Overview

L7806CV-DG from STMicroelectronics is a three-terminal positive linear voltage regulator delivering a fixed 6 V output at up to 1.5 A, featuring thermal overload protection, short-circuit protection, and safe operating area (SOA) protection. It operates with input voltages up to 35 V (for 6 V output), maintains ±2 % output tolerance over temperature, and is housed in a TO-220FP package for industrial power rail regulation in embedded control modules.

For engineers reviewing the L7806CV-DG datasheet, L7806CV-DG pinout, L7806CV-DG application, or L7806CV-DG equivalent, key selection criteria include dropout voltage (2 V @ 1 A), load regulation (≤120 mV), quiescent current (8 mA), supply voltage rejection (59 dB @ 120 Hz), and junction temperature range (0 to 125 °C).

Technical Context

This device implements a monolithic series pass transistor architecture with internal current limiting, thermal shutdown, and SOA protection-enabling robust local regulation without external compensation. Its fixed-output topology eliminates feedback network design but requires minimum 5 mA load current for stable operation.

The regulator's performance is defined by its DC characteristics: output voltage drift of −0.8 mV/°C, output resistance of 19 mΩ at 1 kHz, and noise voltage of 45 µV/VO (10 Hz–100 kHz). Input-to-output differential must remain ≥2 V under full load to sustain regulation.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	6 V ±4 % (5.75–6.25 V) at 25 °C; guaranteed regulation across 0–125 °C junction range
Max Output Current	1.5 A continuous; limited by thermal dissipation and heatsink capability (R_thJA = 60 °C/W for TO-220FP)
Dropout Voltage	2 V at 1 A load and 25 °C; defines minimum VI–VO margin needed to maintain regulation
Line Regulation	≤120 mV over VI = 8–25 V; ensures stable output despite input ripple or supply variation
Load Regulation	≤120 mV over IO = 5 mA–1.5 A; maintains voltage accuracy across dynamic load steps
Supply Rejection	59 dB at 120 Hz; attenuates low-frequency input ripple (e.g., rectified AC) before regulation
Quiescent Current	8 mA typical; contributes directly to no-load power loss in always-on systems

Pinout & Package

Supplied in TO-220FP package: insulated case, vertical mounting, 3-pin through-hole configuration with integrated heat sink tab. Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Input)	Unregulated DC input connection	Accepts 8–25 V DC; must exceed output by ≥2 V under worst-case load/temperature
Pin 2 (Ground)	Common reference node	Return path for input capacitor (0.33 µF), output capacitor (0.1 µF), and load current
Pin 3 (Output)	Regulated 6 V DC source	Delivers up to 1.5 A; requires low-ESR output capacitor for transient stability

Key Features

Feature	Design Value
Thermal overload protection	Automatic shutdown at T_J > ~150 °C; resumes operation after cooldown-prevents permanent damage during sustained overload
Short-circuit current limit	0.55 A typical short-circuit current (VI = 35 V); enables safe fault containment without external fusing
Fixed output with no external components	6 V output set internally; eliminates resistor divider errors, layout sensitivity, and BOM count for basic regulation
SOA-protected pass element	Internal safe operating area logic prevents secondary breakdown during transient overloads or capacitive loads
Extended temperature grade	Rated for 0 to 125 °C junction operation (C version); suitable for non-automotive industrial environments

Applications

Industrial PLC I/O Module Power

Automotive Body Control Unit (BCU)

Use Scenario: Local 6 V rail generation for microcontroller peripherals (ADC references, sensor interfaces, GPIO buffers) in DIN-rail mounted PLC modules.

IC Role / Device Role / Timing Role: Primary local regulator supplying clean, stable 6 V to mixed-signal subsystems; replaces centralized DC/DC conversion.

Use Value: Eliminates distribution losses and noise coupling from shared 24 V bus; thermal protection ensures reliability during field wiring faults.

Use Scenario: Powering LIN transceivers, door lock actuators, and interior lighting drivers in non-safety-critical automotive zones.

IC Role / Device Role / Timing Role: Secondary voltage regulator deriving 6 V from vehicle battery (12 V nominal) for legacy analog subsystems.

Use Value: Withstands load dump transients up to 35 V input; short-circuit protection prevents fuse blowing during actuator stall events.

Medical Infusion Pump Motor Driver

Point-of-Sale Terminal Logic Supply

Use Scenario: Providing isolated 6 V bias to H-bridge gate drivers controlling stepper motors in Class II medical devices.

IC Role / Device Role / Timing Role: Local regulation stage decoupled from main SMPS; ensures precise motor current control unaffected by digital noise.

Use Value: Low output noise (45 µV/VO) minimizes current sense error; SOA protection guards against motor stall-induced current surges.

Use Scenario: Generating 6 V for display backlight drivers and secure element ICs in retail kiosks operating 24/7 in ambient temperatures up to 50 °C.

IC Role / Device Role / Timing Role: Fixed-output linear regulator powering low-noise analog circuitry adjacent to high-speed digital processors.

Use Value: Stable 6 V output with ≤120 mV load regulation ensures consistent LED brightness and cryptographic module timing integrity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output linear regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM7806CDT/NOPB	TI part in TO-220 package; same 6 V output, but higher quiescent current (6.5 mA typ.) and lower SVR (55 dB)	Compatible in PCB footprint; requires derating for same thermal margin due to higher R_thJA (65 °C/W)	Select when TI qualification or dual-sourcing is required; verify thermal design with reduced margin.
MC7806BD2TR4G	ON Semiconductor part in DPAK; identical electrical specs but different package thermal profile (R_thJA = 100 °C/W)	Suitable for surface-mount assembly; needs larger copper pour or forced air for 1.5 A operation	Choose for SMT production; confirm board-level thermal management meets 125 °C max junction limit.

Compared with LM7806CDT/NOPB and MC7806BD2TR4G, the L7806CV-DG offers superior supply rejection (59 dB vs. ≤55 dB) and lower thermal resistance in TO-220FP (60 °C/W vs. 65–100 °C/W), making it preferable for thermally constrained or noise-sensitive 6 V rail designs.

Availability

L7806CV-DG is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, medical infusion pump motor drivers, and point-of-sale terminal logic supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for L7806CV-DG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The L78 series is ST's flagship family of three-terminal positive linear regulators, engineered for rugged local regulation in cost-sensitive, high-reliability applications where simplicity, fault resilience, and wide input range are critical.

FAQ

What is the minimum input voltage required for L7806CV-DG to regulate at full 1.5 A load?

The minimum input voltage is 8 V, based on the specified dropout voltage of 2 V at 1 A and confirmed test conditions (VI = 8–19 V for IO = 5 mA–1 A). At 1.5 A, marginally higher headroom may be needed; 8.5 V is recommended for reliable operation across temperature and line variation.

Can L7806CV-DG be used without an input capacitor?

No-STMicroelectronics specifies a 0.33 µF ceramic or tantalum input capacitor placed within 1 cm of the input pin to prevent oscillation and improve transient response. Omitting it risks instability, especially with long input traces or high-impedance sources like unregulated wall adapters.

Does L7806CV-DG require a heat sink for 1 A continuous operation?

Yes-using the TO-220FP package with R_thJA = 60 °C/W and maximum ambient temperature of 50 °C, power dissipation at 1 A with 12 V input yields ~6 W, raising junction temperature beyond 125 °C without heatsinking. A 10 °C/W heatsink is recommended for full-load operation at 50 °C ambient.

Is L7806CV-DG compatible with ceramic output capacitors?

Yes-ST's datasheet explicitly permits ceramic output capacitors (minimum 0.1 µF) and confirms stability with ESR as low as 0.1 Ω. Unlike older 78xx variants, the L78 series includes internal compensation optimized for modern low-ESR ceramics, eliminating need for series resistance.

L7806CV-DG Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 35V

Voltage - Output (Min/Fixed):: 6V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 2V @ 1A (Typ)

Current - Output:: 1.5A

Current - Quiescent (Iq):: 8 mA

Current - Supply (Max):: -

PSRR:: 59dB (120Hz)

Control Features:: -

Protection Features:: Over Temperature, Short Circuit

Operating Temperature:: 0°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

L7806CV-DG FAQ

1.How can I place an order for L7806CV-DG through Aetrix?

Please submit a Request for Quotation (RFQ) for L7806CV-DG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for L7806CV-DG reliable?

The price and inventory of L7806CV-DG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L7806CV-DG is usually 5 days.

3.What payment methods are accepted for L7806CV-DG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L7806CV-DG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L7806CV-DG?

L7806CV-DG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L7806CV-DG order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for L7806CV-DG?

For technical support, including L7806CV-DG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L7806CV-DG requirements.

6.How does Aetrix verify that L7806CV-DG is sourced from the original manufacturer or authorized distributors?

All L7806CV-DG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that L7806CV-DG meets industry standards.

7.What is the process for return or replacement of L7806CV-DG?

All L7806CV-DG units undergo pre-shipment inspection (PSI). If there is an issue with L7806CV-DG, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The L7806CV-DG part is unused and in its original packaging.

Return procedure for L7806CV-DG:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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