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

STMicroelectronics L7806ACD2T-TR

Name: L7806ACD2T-TR
Brand: STMicroelectronics
SKU: L7806ACD2T-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L7806ACD2T-TR

Manufacturer:: STMicroelectronics

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

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: L7806ACD2T-TR.pdf

Description:: IC REG LINEAR 6V 1.5A D2PAK

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Inventory:1,952

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Product details

Overview

L7806ACD2T-TR from STMicroelectronics is a three-terminal positive linear voltage regulator delivering a fixed 6 V output with ±2 % tolerance at 25 °C, 1.5 A maximum output current, thermal overload and short-circuit protection, and operation across 0 to 125 °C junction temperature - used for local regulation in industrial power supplies and embedded control boards.

For engineers reviewing the L7806ACD2T-TR datasheet, L7806ACD2T-TR pinout, L7806ACD2T-TR application, or L7806ACD2T-TR equivalent, key selection criteria include dropout voltage (2 V @ 1 A), load regulation (≤100 mV over 5 mA–1.5 A), supply voltage rejection (65 dB @ 120 Hz), quiescent current (4.3–6 mA), and D²PAK package thermal resistance (R_thJC = 3 °C/W).

Technical Context

This IC 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 fixed-output topology eliminates need for feedback resistor networks.

Designed for DC input voltages up to 35 V (for 6 V output), it maintains regulation under varying line (VI = 8.6–25 V) and load (IO = 5 mA–1.5 A) conditions while sustaining stable 6 V output with ≤6.24 V max deviation across full temperature and load range.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	6 V ±2 % at 25 °C; ensures precise rail generation for 5 V-tolerant logic or 6 V analog subsystems
Max Output Current	1.5 A continuous; supports mid-power microcontroller systems and sensor interfaces without derating
Dropout Voltage	2 V @ 1 A, 25 °C; requires minimum 8 V input to sustain 6 V output under full load
Supply Rejection	65 dB @ 120 Hz, 500 mA; suppresses ripple from unregulated AC/DC adapters or switching pre-regulators
Thermal Resistance	R_thJC = 3 °C/W (D²PAK); enables >1 A operation with minimal heatsink when case-to-ambient path is managed
Operating Temp	0 to 125 °C junction; qualified for industrial ambient environments without derating
Protection	Integrated thermal shutdown, short-circuit current limit (0.2 A steady-state), and SOA protection - no external foldback required

Pinout & Package

D²PAK (TO-263) surface-mount package with exposed thermal pad; thermally optimized for PCB copper pour attachment and high-current DC operation.

Pin/Terminal	Circuit Role	Design Meaning
1 (Input)	Voltage input terminal	Accepts 8.6–25 V DC; must be bypassed with ≥0.33 µF ceramic capacitor close to pin
2 (Ground)	Common reference node	Low-impedance return path for load and regulator bias; connects to PCB ground plane
3 (Output)	Regulated 6 V output	Delivers stable 6 V to load; requires ≥0.1 µF ceramic output capacitor for stability

Key Features

Feature	Design Value
Fixed 6 V output	Eliminates external resistor network and associated drift/tolerance errors in feedback path
±2 % output tolerance (A version)	Meets tight regulation requirements for analog front-ends and precision reference subsystems
Extended temperature range (0–125 °C)	Supports deployment in enclosed industrial enclosures without forced air or thermal derating
Internal SOA protection	Prevents destruction during transient overloads or capacitive load turn-on without external current-sense circuitry
Thermal shutdown with auto-recovery	Halts regulation above ~160 °C junction and resumes once cooled - avoids latch-up failure mode

Applications

Industrial PLC I/O Modules

Automotive Body Control Units

Use Scenario: Powering isolated digital I/O drivers and analog sensor signal conditioning circuits on modular backplanes.

IC Role / Device Role / Timing Role: Local point-of-load regulator providing clean 6 V rail independent of main 24 V bus fluctuations.

Use Value: Maintains 6 V ±6.24 mV accuracy across -25 °C to 70 °C ambient with <100 mV load regulation - ensuring ADC reference stability and optocoupler LED drive consistency.

Use Scenario: Supplying 6 V to LIN transceiver ICs and low-power microcontrollers in door module ECUs.

IC Role / Device Role / Timing Role: Primary post-regulator after automotive-grade DC/DC converter, rejecting battery ripple and load dump transients.

Use Value: 65 dB SVR at 120 Hz rejects alternator ripple; thermal shutdown prevents latch-up during hot-cranking events (–40 °C to 105 °C ambient).

Medical Patient Monitor Front-Ends

Point-of-Sale Terminal Power Management

Use Scenario: Generating auxiliary 6 V rail for op-amp-based biopotential amplifiers and isolation barrier drivers.

IC Role / Device Role / Timing Role: Low-noise linear regulator supplying analog signal chain, decoupled from noisy digital domains.

Use Value: 10 µV/√Hz output noise density and 17 mΩ output impedance preserve SNR in sub-mV bio-signal acquisition paths.

Use Scenario: Regulating 6 V for thermal print head drivers and smart card interface ICs in compact retail terminals.

IC Role / Device Role / Timing Role: Compact D²PAK regulator enabling high-current pulse delivery (up to 1.5 A) during print activation.

Use Value: R_thJC = 3 °C/W allows sustained 1 A pulses without external heatsink; short-circuit peak current (2.2 A) handles print head stall events.

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 % tolerance, same 6 V output, but only rated for 0–125 °C (no extended temp grade); R_thJC = 5 °C/W (D²PAK)	Lacks guaranteed performance at cold start extremes; higher thermal resistance limits continuous 1.5 A use	Select when cost sensitivity outweighs thermal margin and extended temperature assurance
MC7806CD2TG	±4 % tolerance (C grade), 0–125 °C, R_thJC = 4.5 °C/W; lower SVR (59 dB)	Higher output variation reduces suitability for precision analog rails; lower rejection impacts noise-sensitive loads	Choose only for non-critical digital logic rails where 6 V ±0.24 V is acceptable

Compared with LM7806CD2T and MC7806CD2TG, L7806ACD2T-TR provides tighter initial tolerance, superior thermal performance, and higher ripple rejection - making it the preferred choice for industrial and medical applications requiring long-term regulation stability and robust fault handling.

Availability

L7806ACD2T-TR is available at Aetrix Electronics and suitable for industrial PLCs, automotive body controllers, medical monitoring devices, and POS terminals requiring stable component supply with consistent parametric performance across production lots.

Supply support for L7806ACD2T-TR 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 analog ICs for industrial, automotive, and consumer markets.

L7806ACD2T-TR belongs to the L78 positive voltage regulator family - designed specifically for rugged, cost-effective local regulation in space-constrained industrial and automotive systems where reliability under thermal and electrical stress is critical.

FAQ

What is the minimum input voltage required for regulation?

The L7806ACD2T-TR requires a minimum input voltage of 8.6 V to maintain 6 V output under full 1 A load at 25 °C, based on its 2 V dropout specification. At elevated temperatures or higher currents, VI(min) increases slightly due to thermal effects on dropout; design margin of ≥9.5 V is recommended for robust operation across temperature.

Can this regulator be used with ceramic output capacitors?

Yes - the L7806ACD2T-TR is stable with ceramic output capacitors ≥0.1 µF, as confirmed in ST's DS0422 datasheet. Unlike older 78xx variants, it does not require ESR-based damping; low-ESR ceramics improve transient response and reduce board area versus tantalum alternatives.

How does thermal shutdown behave during overload?

When junction temperature exceeds ~160 °C, the device disables the pass transistor and enters thermal shutdown. It remains latched off until TJ drops by ~20 °C, then automatically resumes regulation - no external reset or power cycle is needed, enabling self-recovering operation in intermittent overload scenarios.

Is an input bypass capacitor mandatory?

Yes - a minimum 0.33 µF ceramic capacitor must be placed within 10 mm of the input pin to prevent oscillation and ensure stability under fast load transients. This capacitor also filters high-frequency noise from upstream converters and reduces effective source impedance seen by the regulator.

L7806ACD2T-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

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:: 0°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

L7806ACD2T-TR FAQ

1.How can I place an order for L7806ACD2T-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L7806ACD2T-TR 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 L7806ACD2T-TR reliable?

The price and inventory of L7806ACD2T-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L7806ACD2T-TR is usually 5 days.

3.What payment methods are accepted for L7806ACD2T-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L7806ACD2T-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L7806ACD2T-TR?

L7806ACD2T-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L7806ACD2T-TR 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 L7806ACD2T-TR?

For technical support, including L7806ACD2T-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L7806ACD2T-TR requirements.

6.How does Aetrix verify that L7806ACD2T-TR is sourced from the original manufacturer or authorized distributors?

All L7806ACD2T-TR 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 L7806ACD2T-TR meets industry standards.

7.What is the process for return or replacement of L7806ACD2T-TR?

All L7806ACD2T-TR units undergo pre-shipment inspection (PSI). If there is an issue with L7806ACD2T-TR, 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 L7806ACD2T-TR part is unused and in its original packaging.

Return procedure for L7806ACD2T-TR:

1.Submit a request within 90 days.

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

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