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

STMicroelectronics L7806ABV

Name: L7806ABV
Brand: STMicroelectronics
SKU: L7806ABV
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L7806ABV

Manufacturer:: STMicroelectronics

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

Package:: TO-220-3

Datasheet:: L7806ABV.pdf

Description:: IC REG LINEAR 6V 1.5A TO220AB

Quantity:: RFQ Add To RFQ list

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Inventory:496

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Product details

Overview

L7806ABV from STMicroelectronics is a three-terminal positive linear voltage regulator delivering a fixed 6 V output with ±2 % tolerance (A-grade), 1.5 A maximum output current, thermal overload and short-circuit protection, and operation across –40 °C to +125 °C junction temperature. It serves as a local on-card power supply in industrial control modules, automotive body electronics, and embedded sensor interfaces requiring stable low-noise DC power.

For engineers reviewing the L7806ABV datasheet, L7806ABV pinout, L7806ABV application, or L7806ABV equivalent, key selection criteria include dropout voltage (2 V at 1 A), load regulation (≤100 mV over 5 mA–1.5 A), supply voltage rejection (65 dB at 120 Hz), output noise (10 µV/√Hz), and thermal resistance (R_thJC = 5 °C/W in TO-220FP).

Technical Context

The L7806ABV implements a monolithic bipolar linear regulator architecture with internal current limiting, safe-area protection, and thermal shutdown-enabling robust operation without external protection circuitry. Its fixed 6 V output is trimmed during manufacturing for ±2 % accuracy at 25 °C and maintained across full load (5 mA–1.5 A) and input voltage (8.6–21 V) ranges.

Designed for local regulation, it eliminates long-trace distribution losses and noise coupling by placing regulation close to the load. The device requires only two external capacitors (0.33 µF input, 0.1 µF output) for stability and exhibits 17 mΩ output resistance and –0.8 mV/°C output voltage drift over temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	6.0 V ±2 % (guaranteed over –40 °C to +125 °C, 5 mA–1 A load)
Max Output Current	1.5 A (internally limited; sustained 1 A requires adequate heatsinking)
Dropout Voltage	2.0 V at 1 A (minimum input = 8.6 V for stable 6 V output)
Line Regulation	≤30 mV (VI = 9–13 V, IO = 500 mA, TJ = 25 °C)
Load Regulation	≤100 mV (IO = 5 mA to 1.5 A, VI = 19 V)
Supply Rejection	65 dB at 120 Hz (rejects ripple from unregulated DC supplies)
Output Noise	10 µV/√Hz (10 Hz–100 kHz; critical for analog sensor & ADC reference stability)

Pinout & Package

Supplied in TO-220FP package (3-pin, vertical mounting, isolated tab), with pin 1 = Input, pin 2 = Ground, pin 3 = Output. The metal tab is electrically connected to ground and thermally coupled to the die for efficient heat transfer to an external heatsink.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Input)	Unregulated DC input supply	Accepts 8.6–21 V DC; must be decoupled with ≥0.33 µF ceramic capacitor near pin
Pin 2 (Ground)	Common reference and thermal path	Electrical ground reference; metal tab is internally bonded to this pin for heatsinking
Pin 3 (Output)	Regulated 6 V DC output	Delivers up to 1.5 A; requires ≥0.1 µF ceramic capacitor at pin for stability

Key Features

Feature	Design Value
Extended temperature grade	Rated for –40 °C to +125 °C operating junction temperature (AB suffix)
Thermal shutdown	Automatic cutoff above safe junction temperature; self-recovery on cooldown
Short-circuit current limit	2.2 A peak (non-destructive); sustains 0.2 A continuous under fault
Low output impedance	17 mΩ at 1 kHz-minimizes load-induced voltage sag during transients
High PSRR	65 dB at 120 Hz-preserves clean 6 V rail despite upstream rectifier ripple

Applications

Industrial PLC I/O Module

Automotive Body Control Unit

Use Scenario: Powering isolated 6 V logic and analog front-end circuits in DIN-rail mounted programmable logic controllers.

IC Role / Device Role / Timing Role: Local point-of-load regulator supplying microcontroller peripherals, optocoupler drivers, and precision ADC references.

Use Value: Eliminates long-trace IR drop and noise coupling; ±2 % output tolerance ensures reliable logic-level compatibility and sensor measurement accuracy.

Use Scenario: Providing regulated 6 V supply to door module ECUs controlling window lifts, mirror actuators, and interior lighting.

IC Role / Device Role / Timing Role: Primary low-voltage regulator downstream of vehicle battery (12 V nominal) and pre-regulator stage.

Use Value: Withstands cold-crank (–40 °C) and engine-bay thermal stress (125 °C); built-in short-circuit protection prevents latch-up during motor stall faults.

Medical Patient Monitor Sensor Interface

Test & Measurement Equipment Power Rail

Use Scenario: Biasing low-noise instrumentation amplifiers and thermistor signal chains in portable vital-sign monitors.

IC Role / Device Role / Timing Role: Ultra-low-noise 6 V reference source for analog signal conditioning stages.

Use Value: 10 µV/√Hz output noise and 65 dB ripple rejection preserve µV-level signal integrity-critical for ECG/SpO₂ accuracy.

Use Scenario: Generating stable 6 V auxiliary rail for FPGA configuration, DAC biasing, and calibration circuitry in benchtop multimeters.

IC Role / Device Role / Timing Role: Precision local regulator ensuring voltage stability during high-current digital switching events.

Use Value: 17 mΩ output resistance and ≤100 mV load regulation prevent rail collapse during FPGA configuration bursts, maintaining measurement repeatability.

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	±2 % output tolerance, but rated only to +125 °C (no extended low-temp support); R_thJA = 65 °C/W (TO-263)	Suitable for commercial-temperature industrial equipment; not qualified for automotive cold environments	Select when ambient temperature stays >0 °C and PCB space favors surface-mount (D2PAK)
MC7806BD2TR4	±4 % output tolerance (B-grade); higher dropout (2.5 V); lower PSRR (55 dB)	Acceptable for non-critical digital logic rails where cost is prioritized over precision/noise	Choose for cost-sensitive consumer applications where ±4 % output and reduced ripple rejection are acceptable

Compared with LM7806CD2T and MC7806BD2TR4, the L7806ABV uniquely combines automotive-grade temperature range (–40 °C to +125 °C), tight ±2 % output tolerance, and industry-leading 65 dB supply rejection-making it the preferred choice for safety-critical and high-precision analog systems.

Availability

L7806ABV is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for L7806ABV 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, specializing in power management, microcontrollers, and automotive ICs with ISO/TS 16949-certified manufacturing.

The L78 series belongs to ST's legacy linear regulator product line, engineered specifically for rugged, cost-effective, and maintenance-free local DC regulation in harsh environments-from factory floors to vehicle engine compartments.

FAQ

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

The L7806ABV requires a minimum input voltage of 8.6 V under full 1 A load and 25 °C junction temperature, based on its 2.0 V dropout specification. At higher temperatures or peak current, derating is advised-designers should maintain ≥9.5 V input to ensure regulation across the full –40 °C to +125 °C range.

Can L7806ABV be used without a heatsink?

Yes, for loads ≤500 mA at ambient temperatures ≤50 °C with adequate PCB copper area (≥25 cm² 2-oz copper pour connected to pin 2), the TO-220FP package can operate without an external heatsink. Above 500 mA or in enclosed/high-ambient environments, a heatsink reducing R_thJA to ≤35 °C/W is required to stay within the 125 °C max junction limit.

Does L7806ABV require input and output capacitors? If so, what values and types?

Yes: a minimum 0.33 µF ceramic capacitor must be placed within 10 mm of the input pin, and a minimum 0.1 µF ceramic capacitor within 10 mm of the output pin. These stabilize internal feedback and prevent oscillation. For improved transient response and ripple suppression, designers commonly add 10–100 µF low-ESR electrolytic/tantalum in parallel with the ceramic output capacitor.

How does the L7806ABV behave during short-circuit conditions?

Under short-circuit, the L7806ABV limits output current to 0.2 A continuously and 2.2 A peak while activating thermal shutdown if junction temperature exceeds ~165 °C. Once the fault clears and temperature drops below ~145 °C, it automatically resumes regulation-no manual reset needed. This behavior is fully characterized and guaranteed per DS0422 Rev 38.

L7806ABV 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):: 6 mA

Current - Supply (Max):: -

PSRR:: 65dB (120Hz)

Control Features:: -

Protection Features:: Over Temperature, Short Circuit

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

L7806ABV FAQ

1.How can I place an order for L7806ABV through Aetrix?

Please submit a Request for Quotation (RFQ) for L7806ABV 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 L7806ABV reliable?

The price and inventory of L7806ABV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L7806ABV is usually 5 days.

3.What payment methods are accepted for L7806ABV?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L7806ABV transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L7806ABV?

L7806ABV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L7806ABV 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 L7806ABV?

For technical support, including L7806ABV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L7806ABV requirements.

6.How does Aetrix verify that L7806ABV is sourced from the original manufacturer or authorized distributors?

All L7806ABV 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 L7806ABV meets industry standards.

7.What is the process for return or replacement of L7806ABV?

All L7806ABV units undergo pre-shipment inspection (PSI). If there is an issue with L7806ABV, 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 L7806ABV part is unused and in its original packaging.

Return procedure for L7806ABV:

1.Submit a request within 90 days.

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

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