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

STMicroelectronics L78M06ABDT-TR

Name: L78M06ABDT-TR
Brand: STMicroelectronics
SKU: L78M06ABDT-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L78M06ABDT-TR

Manufacturer:: STMicroelectronics

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

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: L78M06ABDT-TR.pdf

Description:: IC REG LINEAR 6V 500MA DPAK

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Product details

Overview

L78M06ABDT-TR from STMicroelectronics is a three-terminal positive linear voltage regulator delivering a precise 6 V output at up to 500 mA, featuring ±2 % output voltage tolerance over −40 °C to +125 °C, thermal overload protection, and short-circuit current limiting. It serves as a local on-card power supply in industrial control modules, sensor signal conditioning circuits, and embedded microcontroller power rails where stable low-noise DC is critical.

For engineers reviewing the L78M06ABDT-TR datasheet, L78M06ABDT-TR pinout, L78M06ABDT-TR application, or L78M06ABDT-TR equivalent, key selection criteria include dropout voltage (2 V), load regulation (60 mV max over 5–200 mA), supply voltage rejection (59 dB at 120 Hz), quiescent current (6 mA), and DPAK package thermal resistance (R_thJA = 100 °C/W).

Technical Context

This device implements a monolithic series pass transistor with internal current limiting, thermal shutdown, and safe-area protection-ensuring robust operation under fault conditions without external components. Its fixed 6 V output is trimmed during manufacturing to ±2 % accuracy at 25 °C and maintains stability across input voltages from 8 V to 21 V.

The regulator operates within an extended junction temperature range of −40 °C to +125 °C (AB grade), supports output capacitance down to 0.1 µF, and requires only a 0.33 µF input bypass capacitor for stability under high-frequency transients and long PCB trace conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output voltage	6 V ±2 % (5.75–6.3 V over full load and temp range); enables stable MCU core/sensor biasing without external feedback.
Max output current	500 mA continuous; sufficient for powering multiple low-power ICs or analog front-ends from a single rail.
Dropout voltage	2 V at 25 °C; dictates minimum input–output differential needed to sustain regulation (e.g., 8 V min input for 6 V out).
Supply voltage rejection	59 dB at 120 Hz; attenuates ripple from unregulated DC supplies, reducing need for upstream filtering.
Quiescent current	6 mA typical; contributes <12 mW static loss at 2 V dropout, supporting energy-efficient standby modes.
Load regulation	60 mV max (5–200 mA); ensures <1 % output deviation during dynamic load steps in real-time control loops.
Thermal shutdown threshold	Junction temperature >150 °C triggers automatic shutdown; protects against sustained overload or inadequate heatsinking.

Pinout & Package

The L78M06ABDT-TR is housed in a surface-mount DPAK (TO-252) package with exposed thermal pad, optimized for PCB heat dissipation without a heatsink in moderate-power applications.

Pin/Terminal	Circuit Role	Design Meaning
1 (Input)	Voltage input terminal	Accepts 8–21 V DC; must be bypassed with ≥0.33 µF capacitor near pin to suppress HF noise and ensure stability.
2 (Ground)	Reference and return path	Common ground for input and output; shortest possible PCB trace required to minimize voltage drop and oscillation risk.
3 (Output)	Regulated 6 V source	Delivers filtered, stable 6 V to load; output capacitor ≥0.1 µF required for transient response and ESR-based stability.

Key Features

Feature	Design Value
Fixed output voltage	6 V trimmed to ±2 % at 25 °C and maintained across −40 °C to +125 °C, eliminating external resistor networks.
Internal protection	Thermal shutdown, short-circuit current limit (270 mA typical), and safe-area compensation prevent damage during faults.
Low noise performance	45 µV RMS output noise (10 Hz–100 kHz) supports precision analog circuits like ADC references and op-amp biasing.
DPAK thermal efficiency	R_thJA = 100 °C/W enables 500 mA operation at ambient ≤65 °C without external heatsink in standard FR-4 layouts.
Input voltage range	Supports 8–21 V input, compatible with common 9 V/12 V wall adapters and intermediate DC bus rails in multi-rail systems.

Applications

Industrial PLC I/O Module

Automotive Body Control Unit

Use Scenario: Powering isolated digital input buffers and analog sensor interfaces in modular PLC backplanes.

IC Role / Device Role / Timing Role: Local 6 V regulator supplying logic-level translators and op-amps adjacent to field-side isolation barriers.

Use Value: Eliminates distribution losses and noise coupling from centralized 24 V supply; ±2 % tolerance ensures consistent ADC reference scaling across temperature.

Use Scenario: Providing clean 6 V rail to LIN transceivers and door module microcontrollers in non-safety-critical zones.

IC Role / Device Role / Timing Role: Primary low-noise supply for LIN physical layer ICs requiring stable V_CC independent of battery fluctuations.

Use Value: 59 dB SVR suppresses alternator ripple; thermal shutdown prevents latch-up during load-dump transients when used with proper input clamping.

Medical Patient Monitor Front-End

Smart Energy Meter Sensor Subsystem

Use Scenario: Biasing low-noise instrumentation amplifiers and 24-bit sigma-delta ADCs in ECG/SpO₂ analog signal chains.

IC Role / Device Role / Timing Role: Precision analog supply decoupled from digital processor rails to minimize crosstalk-induced offset drift.

Use Value: 45 µV output noise and <60 mV load regulation preserve SNR and linearity in sub-µV biomedical measurements.

Use Scenario: Powering metrology ADCs, current shunt amplifiers, and RTC backup circuits in Class 0.5 electricity meters.

IC Role / Device Role / Timing Role: Stable 6 V reference source for anti-aliasing filters and precision voltage dividers feeding metering SoCs.

Use Value: −0.5 mV/°C output drift minimizes calibration drift over −25 °C to +70 °C operating range; DPAK footprint simplifies automated assembly.

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
LM78M06CDT-TR	±4 % output tolerance (vs. ±2 %), wider temp range (0 to +125 °C only), higher quiescent current (8 mA)	Suitable for cost-sensitive consumer applications where tighter regulation is not required	Select if budget constraints outweigh precision needs and ambient temperature stays above 0 °C
MC78M06BDTG	Same ±2 % tolerance but TO-220 package (R_thJA = 50 °C/W), higher peak short-circuit current (300 mA)	Better thermal performance in high-ambient or forced-air environments; through-hole assembly	Choose for legacy designs requiring through-hole mounting or improved thermal headroom at 500 mA

Compared with LM78M06CDT-TR, L78M06ABDT-TR delivers tighter regulation and lower quiescent current for precision analog use; versus MC78M06BDTG, it offers smaller footprint and automated assembly compatibility at the expense of thermal margin in high-power scenarios.

Availability

L78M06ABDT-TR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, medical patient monitor front-ends, and smart energy meter sensor subsystems requiring stable component supply with guaranteed long-term continuity.

Supply support for L78M06ABDT-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, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The L78MxxA series was developed to provide rugged, pin-compatible fixed-voltage regulators for space-constrained embedded systems needing local regulation with integrated fault protection and extended temperature operation.

FAQ

What is the minimum input voltage required for stable 6 V output?

The L78M06ABDT-TR requires a minimum input voltage of 8 V to maintain regulation across its full 5–500 mA load range and −40 °C to +125 °C temperature span. This accounts for its 2 V dropout voltage and worst-case line/load regulation, ensuring output remains within 5.75–6.3 V specifications even under transient conditions.

Can this regulator be used without input and output capacitors?

No-ST specifies a minimum 0.33 µF input capacitor (tantalum, ceramic, or film) placed directly across pins 1 and 2, and a 0.1 µF output capacitor (ceramic preferred) across pins 2 and 3. Omitting either risks instability, overshoot, or oscillation, especially with long PCB traces or capacitive loads exceeding 10 µF.

How does thermal performance compare between DPAK and TO-220 packages?

In the DPAK package, R_thJA is 100 °C/W versus 50 °C/W for TO-220. At 500 mA and 2 V dropout (1 W dissipation), DPAK junction temperature rises ~100 °C above ambient-limiting continuous operation to ≤65 °C ambient without heatsinking. TO-220 allows ~125 °C ambient under identical conditions.

Is the L78M06ABDT-TR suitable for automotive applications?

Yes, when used within its specified −40 °C to +125 °C operating junction temperature range and with appropriate input protection (e.g., TVS diode for load dump). It is not AEC-Q100 qualified, so it is intended for non-safety-critical automotive subsystems such as infotainment peripherals or cabin sensors-not airbag or braking systems.

L78M06ABDT-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Active

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):: -

Current - Output:: 500mA

Current - Quiescent (Iq):: 6 mA

Current - Supply (Max):: -

PSRR:: 59dB (120Hz)

Control Features:: -

Protection Features:: Over Current, Over Temperature, Short Circuit

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

L78M06ABDT-TR FAQ

1.How can I place an order for L78M06ABDT-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L78M06ABDT-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 L78M06ABDT-TR reliable?

The price and inventory of L78M06ABDT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L78M06ABDT-TR is usually 5 days.

3.What payment methods are accepted for L78M06ABDT-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L78M06ABDT-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L78M06ABDT-TR?

L78M06ABDT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L78M06ABDT-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 L78M06ABDT-TR?

For technical support, including L78M06ABDT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L78M06ABDT-TR requirements.

6.How does Aetrix verify that L78M06ABDT-TR is sourced from the original manufacturer or authorized distributors?

All L78M06ABDT-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 L78M06ABDT-TR meets industry standards.

7.What is the process for return or replacement of L78M06ABDT-TR?

All L78M06ABDT-TR units undergo pre-shipment inspection (PSI). If there is an issue with L78M06ABDT-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 L78M06ABDT-TR part is unused and in its original packaging.

Return procedure for L78M06ABDT-TR:

1.Submit a request within 90 days.

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

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