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

STMicroelectronics L7806CP

Name: L7806CP
Brand: STMicroelectronics
SKU: L7806CP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L7806CP

Manufacturer:: STMicroelectronics

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

Package:: TO-220-3 Full Pack

Datasheet:: L7806CP.pdf

Description:: IC REG LINEAR 6V 1.5A TO220FP

Quantity:: RFQ Add To RFQ list

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Inventory:4,756

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Product details

Overview

L7806CP from STMicroelectronics is a three-terminal positive linear voltage regulator delivering a fixed 6 V output with up to 1.5 A load current, ±2 % output voltage tolerance (A-grade), thermal overload and short-circuit protection, and 2 V dropout voltage at 1 A - used for local on-card regulation in industrial power supplies and embedded control modules.

For engineers reviewing the L7806CP datasheet, L7806CP pinout, L7806CP application, or L7806CP equivalent, key selection criteria include guaranteed 6 V output stability across -40 °C to 125 °C (AB grade), junction-to-ambient thermal resistance of 50 °C/W in TO-220 package, and compatibility with standard 0.33 µF input / 0.1 µF output capacitor configuration.

Technical Context

The L7806CP implements a monolithic series pass transistor architecture with internal current limiting, safe operating area (SOA) protection, and thermal shutdown circuitry - enabling robust operation without external protection components. Its feedback loop maintains regulation under line variations from 8.6 V to 25 V input and load changes from 5 mA to 1.5 A.

Designed for fixed-output use, it supports adjustable configurations via external resistive dividers but requires minimum 5 mA load current for stable regulation. Output noise is specified at 45 µV/√Hz (10 Hz–100 kHz), and supply voltage rejection reaches 59 dB at 120 Hz with 500 mA load.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	6 V ±2 % (min 5.75 V, max 6.25 V at 25 °C); ensures precise rail generation for 5 V logic interfaces with margin.
Max Output Current	1.5 A continuous; supports motor drivers, sensor signal chains, and microcontroller power domains.
Dropout Voltage	2 V at 1 A and 25 °C; requires ≥8 V input for regulated 6 V output under full load.
Line Regulation	≤120 mV over 8–25 V input range; limits output shift due to unregulated supply ripple or sag.
Load Regulation	≤120 mV from 5 mA to 1.5 A; maintains voltage stability across dynamic load transients.
Quiescent Current	8 mA typical; contributes <50 mW standby loss at 6 V output, suitable for always-on subsystems.
Thermal Resistance	50 °C/W (junction-to-ambient, TO-220); mandates heatsink for >500 mA continuous operation at 70 °C ambient.
Short-Circuit Current	0.55 A typical; limits fault energy during output shorts while preserving device integrity.

Pinout & Package

Supplied in TO-220 package (3-pin, vertical mounting, metal tab connected to ground), featuring standardized pinout for drop-in replacement across L78xx family regulators.

Pin/Terminal	Circuit Role	Design Meaning
1 (Input)	Unregulated DC input	Accepts 8.6–25 V DC; must be decoupled with ≥0.33 µF ceramic capacitor near pin.
2 (Ground)	Common reference node	Connects to system ground plane; metal tab is electrically tied to this pin for thermal conduction.
3 (Output)	Regulated 6 V output	Delivers stable 6 V to load; requires ≥0.1 µF ceramic capacitor at pin for high-frequency stability.

Key Features

Feature	Design Value
Internal thermal shutdown	Activates at ~150 °C junction temperature, halting output until safe cooldown - eliminates need for external thermal sensors.
SOA-protected pass element	Prevents second breakdown during transient overloads or capacitive loads - enables reliable start-up into 1000 µF output capacitance.
Fixed 6 V output with 2 % tolerance	Meets tight analog supply requirements for op-amps and ADC references without trimming components.
Extended temperature grade (AB)	Rated for -40 °C to +125 °C operation - validated for automotive body control modules and industrial PLC I/O stages.
Low output noise (45 µV/√Hz)	Minimizes interference in precision analog front-ends, such as strain gauge amplifiers or sensor signal conditioning.

Applications

Industrial Power Supply

Automotive Body Control Module

Use Scenario: Local 6 V rail generation for relay drivers and CAN transceiver biasing in DIN-rail mounted PLC power units.

IC Role / Device Role / Timing Role: Primary linear regulator providing isolated, low-noise 6 V supply independent of main 24 V bus fluctuations.

Use Value: Eliminates single-point regulation distribution losses and improves immunity to conducted EMI from adjacent switching converters.

Use Scenario: Powering window lift motor controllers and door lock actuators in vehicle body electronics.

IC Role / Device Role / Timing Role: Fixed-output voltage regulator supplying 6 V to H-bridge gate drivers and position feedback circuits.

Use Value: Internal short-circuit and thermal protection ensure fail-safe operation during motor stall or wiring faults without external fusing.

Embedded Sensor Hub

Legacy Industrial Instrumentation

Use Scenario: Powering multi-sensor nodes (temperature, humidity, pressure) with analog outputs in factory-floor monitoring systems.

IC Role / Device Role / Timing Role: Local regulation stage converting 12 V board supply to clean 6 V for precision op-amp signal conditioning.

Use Value: 45 µV/√Hz output noise and 59 dB supply rejection preserve sub-mV-level analog measurement accuracy.

Use Scenario: Replacing aging 7806 regulators in calibrated test equipment requiring long-term voltage stability.

IC Role / Device Role / Timing Role: Fixed-voltage reference source for analog meter movements and comparator thresholds.

Use Value: ±2 % output tolerance and -0.8 mV/°C drift enable recalibration intervals extended beyond 2 years in controlled environments.

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
LM7806CD2T	TO-263 package (D²PAK), R_thJA = 62.5 °C/W; 1.5 A rating same, but higher thermal resistance than TO-220.	Suitable for surface-mount PCBs with limited heatsink area; less effective at dissipating >1 W continuously.	Select when space-constrained SMT layout is required and peak load current remains ≤1 A.
MC7806BD2TR4	ON Semiconductor part, ±4 % output tolerance (B-grade), wider quiescent current range (4.3–8 mA), same TO-220 package.	Lower cost alternative where 6 V ±4 % is acceptable - e.g., non-critical digital I/O rails.	Choose for cost-sensitive industrial controls where tighter 2 % tolerance is not mandated by system specs.

Compared with LM7806CD2T and MC7806BD2TR4, the L7806CP offers superior output accuracy (±2 % vs ±4 %), lower thermal resistance (50 °C/W vs 62.5 °C/W), and tighter load regulation (120 mV vs 160 mV), making it preferred for precision analog and thermally demanding applications.

Availability

L7806CP is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, embedded sensor hubs, and legacy instrumentation requiring stable component supply and long-lifecycle support.

Supply support for L7806CP 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, specializing in power management, microcontrollers, and automotive ICs.

The L78 series belongs to ST's legacy linear regulator product line, engineered for ruggedness and simplicity in cost-sensitive, high-reliability applications across industrial and automotive sectors.

FAQ

What is the minimum input voltage required for stable 6 V output at 1 A load?

The L7806CP requires a minimum input voltage of 8.6 V under 1 A load at 25 °C, based on its 2 V dropout specification. At elevated temperatures or higher current, derating is necessary - for example, ≥9.5 V recommended at 125 °C junction temperature to maintain regulation margin.

Can L7806CP be used without an input capacitor?

No - STMicroelectronics specifies a minimum 0.33 µF ceramic capacitor at the input pin to prevent oscillation and ensure stability, especially with long input traces or high-impedance sources. Omitting it risks output overshoot, ringing, or thermal shutdown during load transients.

Is the metal tab on the TO-220 package electrically connected?

Yes - the metal tab is internally connected to Pin 2 (Ground). When mounted to a heatsink, electrical isolation (e.g., mica washer + shoulder washer) is mandatory unless the heatsink is grounded. Failure to isolate may cause short circuits or ground loops in floating systems.

How does L7806CP handle reverse voltage on the output pin?

The L7806CP lacks reverse-voltage protection. If output voltage exceeds input (e.g., during shutdown with large output capacitance), current flows backward through the internal pass transistor, potentially damaging the IC. A reverse-biased Schottky diode from output to input is recommended in such scenarios.

L7806CP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3 Full Pack

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-220FP

L7806CP FAQ

1.How can I place an order for L7806CP through Aetrix?

Please submit a Request for Quotation (RFQ) for L7806CP 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 L7806CP reliable?

The price and inventory of L7806CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L7806CP is usually 5 days.

3.What payment methods are accepted for L7806CP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L7806CP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L7806CP?

L7806CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L7806CP 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 L7806CP?

For technical support, including L7806CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L7806CP requirements.

6.How does Aetrix verify that L7806CP is sourced from the original manufacturer or authorized distributors?

All L7806CP 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 L7806CP meets industry standards.

7.What is the process for return or replacement of L7806CP?

All L7806CP units undergo pre-shipment inspection (PSI). If there is an issue with L7806CP, 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 L7806CP part is unused and in its original packaging.

Return procedure for L7806CP:

1.Submit a request within 90 days.

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

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