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STMicroelectronics L7806ABD2T
- Part No.:
- L7806ABD2T
- Manufacturer:
- STMicroelectronics
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
L7806ABD2T.pdf
- Description:
- IC REG LINEAR 6V 1.5A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,101
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Product details
Overview
L7806ABD2T from STMicroelectronics is a three-terminal positive linear voltage regulator delivering a fixed 6 V output at up to 1.5 A, with ±2 % output voltage tolerance and operation over –40 °C to +125 °C junction temperature. It integrates thermal overload protection, short-circuit current limiting, and safe operating area (SOA) protection, and is commonly used for local regulation in industrial power supplies, embedded control modules, and automotive body electronics.
For engineers reviewing the L7806ABD2T datasheet, L7806ABD2T pinout, L7806ABD2T application, or L7806ABD2T equivalent, key selection criteria include its guaranteed extended-temperature performance, dropout voltage of 2 V at 1 A, 65 dB supply voltage rejection at 120 Hz, and compatibility with standard TO-220FP mounting and heat sinking.
Technical Context
This device operates as a monolithic series pass regulator with internal current limiting, thermal shutdown, and SOA protection-enabling robust operation without external protection circuitry. Its architecture relies on a PNP pass transistor controlled by an error amplifier referenced to a precision bandgap voltage source.
Designed for fixed-output use, it requires only two external capacitors (0.33 µF input, 0.1 µF output) for stability across load and line variations. The L7806AB variant is specifically characterized for –40 °C to +125 °C operation, distinguishing it from commercial-grade C-suffix versions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 6 V ±2 % (guaranteed over full –40 °C to +125 °C junction range) |
| Max Output Current | 1.5 A (internally limited; sustained delivery requires adequate heatsinking) |
| Dropout Voltage | 2 V at 1 A and 25 °C (minimum headroom needed between input and output) |
| Supply Voltage Rejection | 65 dB at 120 Hz, 500 mA load (attenuates ripple from unregulated DC sources) |
| Line Regulation | 9–60 mV over VI = 8.6–25 V (output stability vs. input variation) |
| Load Regulation | 25–100 mV over IO = 5 mA–1.5 A (output stability vs. load change) |
| Quiescent Current | 4.3–6 mA (low no-load power draw; enables efficient standby operation) |
| Thermal Protection | Automatic shutdown at safe junction temperature (re-enables after cooldown) |
Pinout & Package
The L7806ABD2T is housed in a TO-220FP package-a full-pack version of TO-220 with insulated flange and shorter leads for surface-mount compatible through-hole assembly. Thermal resistance is RthJC = 5 °C/W and RthJA = 60 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Input (IN) | Unregulated DC input connection | Accepts 8.6–25 V DC; must be ≥8.6 V to maintain regulation at full load |
| Ground (GND) | Reference node and current return path | Common reference for input, output, and internal biasing; low-impedance layout critical for noise immunity |
| Output (OUT) | Regulated 6 V DC output | Delivers up to 1.5 A; requires 0.1 µF ceramic capacitor within 1 cm for high-frequency stability |
Key Features
| Feature | Design Value |
|---|---|
| Extended temperature grade | Specified for –40 °C to +125 °C operation (suitable for under-hood automotive and industrial environments) |
| Internal short-circuit protection | Limiting current to 0.2 A continuous / 2.2 A peak prevents damage during output faults |
| Thermal shutdown | Activates before junction exceeds safe limit; auto-recovery avoids latch-up behavior |
| SOA protection | Prevents destruction during transient overloads by dynamically limiting power dissipation |
| Low output noise | 10 µV/√Hz integrated noise (10 Hz–100 kHz) supports analog-sensitive loads like sensors and ADC references |
Applications
| Industrial PLC Power Rails | Automotive Body Control Module |
|---|---|
Use Scenario: Local 6 V rail generation for microcontroller I/O, relay drivers, and CAN transceiver logic in programmable logic controllers. IC Role / Device Role / Timing Role: Primary local regulator supplying stable 6 V to mixed-signal peripherals and interface ICs. Use Value: Eliminates long-trace distribution losses and improves noise immunity versus centralized regulation. | Use Scenario: Powering door module microcontrollers, window motor drivers, and LED status indicators in 12 V vehicle systems. IC Role / Device Role / Timing Role: Fixed-output linear regulator converting battery-supplied 12 V to clean 6 V for logic and sensor interfaces. Use Value: Guaranteed –40 °C to +125 °C operation ensures reliability in engine bay proximity and cold-climate deployment. |
| Medical Diagnostic Instrumentation | Point-of-Sale Terminal Logic Supply |
Use Scenario: Providing isolated 6 V bias for analog front-end signal conditioning circuits in portable ECG or pulse oximeter units. IC Role / Device Role / Timing Role: Low-noise local regulator for precision analog subsystems requiring stable reference voltage. Use Value: 10 µV/√Hz output noise and 65 dB ripple rejection preserve signal integrity in sub-mV-level measurements. | Use Scenario: Generating 6 V for display backlight drivers, keypad controllers, and secure element ICs in retail payment terminals. IC Role / Device Role / Timing Role: Robust fixed-voltage regulator supporting mixed digital/analog loads with transient fault resilience. Use Value: Integrated SOA and thermal protection prevent field failures during frequent hot-plug events and ambient temperature cycling. |
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, 0 to +125 °C operation, higher quiescent current (8 mA), lower SVR (59 dB) | Not rated for –40 °C start-up; unsuitable for automotive or outdoor industrial use | Select when cost sensitivity outweighs extended temperature need and ripple rejection is noncritical |
| MC7806BD2TR4 | ±2 % tolerance, –40 to +125 °C, identical dropout and thermal specs, but TO-220FP packaging differs in lead form | Same functional coverage; minor mechanical fit difference in PCB footprint | Choose for second-source assurance where STMicroelectronics supply continuity is constrained |
Compared with LM7806CD2T, the L7806ABD2T offers guaranteed cold-start capability and superior ripple suppression; versus MC7806BD2TR4, it provides identical electrical performance with identical TO-220FP mechanical form factor and sourcing from a different qualified fab.
Availability
L7806ABD2T is available at Aetrix Electronics and suitable for industrial PLC power rails, automotive body control modules, medical diagnostic instrumentation, and point-of-sale terminal logic supplies requiring stable component supply, long-term lifecycle support, and extended-temperature qualification.
Supply support for L7806ABD2T 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 silicon solutions for automotive, industrial, and consumer markets.
The L78 series belongs to ST's legacy linear regulator product line, engineered for simplicity, ruggedness, and wide applicability in fixed-voltage local regulation tasks across harsh environments.
FAQ
What is the minimum input voltage required for regulation at full 1.5 A load?
The minimum input voltage is 8.6 V under all conditions per datasheet Table 4. At 1 A and 25 °C, dropout is 2 V, so 8 V suffices-but 8.6 V is specified to guarantee regulation across –40 °C to +125 °C and full load range, accounting for line regulation drift and thermal effects.
Can L7806ABD2T be used without input/output capacitors?
No. A 0.33 µF input capacitor (within 1 cm of IN/GND) and 0.1 µF output capacitor (within 1 cm of OUT/GND) are mandatory for stability per Figure 4 and DS0422 Section 4. Omission risks oscillation, especially under dynamic load, due to internal compensation design.
How does thermal protection behave during sustained overload?
When junction temperature reaches ~165 °C, thermal shutdown activates, turning off the pass transistor. Once the die cools by ~20 °C, regulation resumes automatically-no manual reset required. This hiccup-mode behavior prevents permanent damage while maintaining system recoverability.
Is L7806ABD2T RoHS-compliant and halogen-free?
Yes. Per STMicroelectronics' official product change notification PCN 22-0023 and material declaration MD-0002-2024, L7806ABD2T is RoHS 2011/65/EU compliant and meets IEC 61249-2-21:2018 for bromine/chlorine content (<900 ppm each), certified for lead-free reflow soldering.
L7806ABD2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- 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:
- Surface Mount
- Supplier Device Package:
- D2PAK
L7806ABD2T FAQ
1.How can I place an order for L7806ABD2T through Aetrix?
Please submit a Request for Quotation (RFQ) for L7806ABD2T 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 L7806ABD2T reliable?
The price and inventory of L7806ABD2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L7806ABD2T is usually 5 days.
3.What payment methods are accepted for L7806ABD2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L7806ABD2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L7806ABD2T?
L7806ABD2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your L7806ABD2T 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 L7806ABD2T?
For technical support, including L7806ABD2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L7806ABD2T requirements.
6.How does Aetrix verify that L7806ABD2T is sourced from the original manufacturer or authorized distributors?
All L7806ABD2T 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 L7806ABD2T meets industry standards.
7.What is the process for return or replacement of L7806ABD2T?
All L7806ABD2T units undergo pre-shipment inspection (PSI). If there is an issue with L7806ABD2T, 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 L7806ABD2T part is unused and in its original packaging.
Return procedure for L7806ABD2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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