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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - LinearLT3061EDCB-3.3#TRPBF
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LT3061EDCB-3.3#TRPBF - Analog Devices Inc.

Manufacturer Part Number
LT3061EDCB-3.3#TRPBF
Manufacturer
Analog Devices, Inc.
Allelco Part Number
98D-LT3061EDCB-3.3#TRPBF
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
47,629 pcs available, New & Original
Parts Description
IC REG LINEAR 3.3V 100MA 8DFN
Package
8-DFN (2x3)
Data sheet
LT3061EDCB-3.3#.pdf

Datasheets

LT3061 Series.pdf

Other Related Documents

Tape and Reel Packaging.pdf
RoHs Status
ROHS3 Compliant
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Specifications

LT3061EDCB-3.3#TRPBF Tech Specifications
Analog Devices Inc. - LT3061EDCB-3.3#TRPBF technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - LT3061EDCB-3.3#TRPBF

Product Attribute Attribute Value
Manufacturer Analog Devices, Inc.
Voltage Dropout (Max) 0.43V @ 100mA
Voltage - Output (Min/Fixed) 3.3V
Voltage - Output (Max) -
Voltage - Input (Max) 45V
Supplier Device Package 8-DFN (2x3)
Series -
Protection Features Over Current, Over Temperature, Reverse Polarity
Package / Case 8-WFDFN Exposed Pad
Package Tape & Reel (TR)
PSRR 73dB (120Hz)
Product Attribute Attribute Value
Output Type Fixed
Output Configuration Positive
Operating Temperature -40°C ~ 125°C
Number of Regulators 1
Mounting Type Surface Mount
Current - Supply (Max) 4 mA
Current - Quiescent (Iq) 90 µA
Current - Output 100mA
Control Features Enable, Soft Start
Base Product Number LT3061

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

What are the key performance characteristics of the LT3061EDCB-3.3#TRPBF that make it suitable for high-voltage industrial applications?
The LT3061EDCB-3.3#TRPBF supports an input voltage up to 45V, which enables reliable operation in harsh environments where transient spikes or supply variations are common. Its low dropout voltage of 0.43V at 100mA ensures stable 3.3V output even under moderate load conditions, minimizing power dissipation and thermal stress. With a quiescent current of only 90 µA, the regulator maintains high efficiency during light-load scenarios typical in battery-powered or always-on systems. These combined features make it ideal for industrial automation, automotive sensor modules, and remote monitoring devices requiring robust voltage regulation.
How does the LT3061EDCB-3.3#TRPBF compare to other members of the LT3060/3061 family in terms of package options and pin compatibility?
The LT3061EDCB-3.3#TRPBF uses an 8-DFN (2x3) exposed pad package with dual configuration pins, providing a compact footprint suitable for space-constrained designs. It is electrically equivalent to the LT3061IDCB-3.3#TRMPBF but differs in marking code and packaging orientation. While the base part LT3061 supports multiple fixed output variants, the DCB suffix indicates a specific lead finish and assembly variant optimized for automated pick-and-place processes. Substitutes such as LT3060EDC-3.3 variants offer similar functionality but may have slightly different dropout or Iq specifications, so careful comparison against full datasheet parameters is necessary before substitution.
Can the LT3061EDCB-3.3#TRPBF be used in battery-powered systems, and what factors should be considered regarding its power consumption?
Yes, the LT3061EDCB-3.3#TRPBF is well-suited for battery-powered applications due to its ultra-low quiescent current of 90 µA. This minimizes standby power loss over time, extending battery life in devices like IoT sensors or portable instrumentation. However, designers must consider the maximum input voltage of 45V—while useful for handling line transients, it implies caution when operating from batteries that can spike above 16V (e.g., Li-ion packs). Additionally, the 100mA output limit restricts use to low-current loads unless parallel regulators are employed. Thermal management remains critical if the input-to-output differential exceeds 1–2V under continuous loading.
What protection mechanisms does the LT3061EDCB-3.3#TRPBF include, and how do they enhance system reliability?
The LT3061EDCB-3.3#TRPBF incorporates over-current, over-temperature, and reverse polarity protection features, which significantly improve robustness in real-world deployments. Over-current protection prevents damage during shorted outputs or excessive load conditions by limiting internal drive circuitry. Over-temperature shutdown activates when junction temperature exceeds safe thresholds (~165°C typical), preventing catastrophic failure. Reverse polarity protection guards against accidental battery reversal, a common failure mode in field-deployed equipment. Together, these safeguards reduce design complexity around external fuses or diodes, simplifying PCB layout and lowering component count.
Is the LT3061EDCB-3.3#TRPBF suitable for automotive applications, and what environmental qualifications does it meet?
While not explicitly AEC-Q100 qualified, the LT3061EDCB-3.3#TRPBF operates over a wide temperature range of -40°C to +125°C, meeting many functional safety requirements for non-critical automotive subsystems such as infotainment or body electronics. Its high-voltage tolerance allows it to interface safely with unregulated 12V or 24V networks without additional bulk protection. However, for mission-critical functions requiring formal automotive certification, verification with Analog Devices for potential QML-V or AEC compliance status is recommended. The device is RoHS3 compliant and REACH unaffected, aligning with global regulatory standards.
How does the PSRR performance of the LT3061EDCB-3.3#TRPBF impact noise-sensitive analog circuits?
With a Power Supply Rejection Ratio (PSRR) of 73dB at 120Hz, the LT3061EDCB-3.3#TRPBF provides adequate rejection of low-frequency supply ripple commonly found in switch-mode power supplies. This makes it suitable for powering precision analog front-ends, ADCs, or RF sections where clean 3.3V rails are essential. However, at higher frequencies (e.g., >1kHz), PSRR degrades, so additional filtering may be needed if driven by noisy sources. For ultra-low-noise applications, post-regulation using LDOs in cascade or dedicated quiet regulators might be preferable, though this increases board area and cost.
What are the implications of the 0.43V maximum dropout voltage for thermal design in the LT3061EDCB-3.3#TRPBF?
The 0.43V dropout at 100mA means that when Vin drops below 3.73V, the regulator can no longer maintain a stable 3.3V output. In such cases, power dissipation rises sharply since P = (Vin - Vout) × Iload. For example, at 5V input and 100mA load, dissipation reaches 170mW—requiring a small heatsink or careful PCB copper pour to keep junction temperature within limits. In high-efficiency designs where Vin >> Vout, heat generation is minimal, but close-to-dropout operation demands thermal planning to avoid long-term reliability issues.
Can the LT3061EDCB-3.3#TRPBF be substituted with LT3060-based parts, and what differences should engineers verify?
Substitution between LT3061EDCB-3.3#TRPBF and LT3060EDC-3.3 variants is possible in some designs, but differences exist. The LT3060 typically has a lower minimum operating voltage (e.g., 1.8V vs. 2.5V) and slightly altered dropout characteristics, which may affect startup behavior in low-input systems. Both share similar protection features and package options, but the LT3061 offers improved PSRR and tighter output accuracy (±2% vs. ±3% typical). Engineers must confirm voltage margin, transient response, and thermal performance under their specific load profiles before substituting across product families.
How does the enable feature on the LT3061EDCB-3.3#TRPBF contribute to system-level power management?
The active-high enable pin allows dynamic control of the regulator’s output, enabling software-based power sequencing in microcontrollers or FPGA designs. By pulling EN low, the IC enters a low-leakage shutdown state, reducing quiescent current to near-zero levels. Combined with soft-start functionality, this prevents inrush surges during wake-up cycles, protecting upstream components and improving EMI profile. This is particularly valuable in multi-rail systems where staggered power-up reduces peak current draw from the main supply.
What is the significance of the MSL rating and tape & reel packaging for the LT3061EDCB-3.3#TRPBF in manufacturing?
The Moisture Sensitivity Level (MSL) of 1 indicates the LT3061EDCB-3.3#TRPBF is not sensitive to moisture absorption and can withstand unlimited storage time without baking prior to reflow. This simplifies inventory handling and reduces assembly costs. Tape & reel packaging facilitates automated assembly via pick-and-place machines, enhancing throughput and minimizing handling errors. The TR suffix confirms compatibility with standard SMT lines, making the device ideal for high-volume production environments focused on reliability and scalability.
How does the exposed pad on the 8-DFN package benefit thermal performance of the LT3061EDCB-3.3#TRPBF?
The exposed thermal pad on the bottom of the 8-DFN (2x3) package acts as a heat-spreading surface, directly connecting the die to a ground plane or thermal layer beneath. This reduces junction-to-board thermal resistance, improving heat dissipation and allowing higher sustained output currents without exceeding temperature limits. Proper soldering of the pad to a solid copper area (ideally with vias to inner layers) is essential for optimal thermal conductivity—especially in applications with moderate load or elevated ambient temperatures.
What design considerations arise when cascading multiple LT3061EDCB-3.3#TRPBF regulators for higher output currents?
Cascading two LT3061EDCB-3.3#TRPBF units (e.g., first stage at 5V→3.3V, second at 3.3V→2.5V) increases total efficiency compared to a single high-dropout regulator but introduces stability challenges. Each stage adds phase lag, potentially causing oscillations if compensation networks aren't carefully matched. Additionally, feedback resistors must account for loading effects, and output capacitance should comply with each stage’s ESR requirements to maintain loop stability. Only feasible in niche applications where simplicity outweighs the need for monolithic integration; otherwise, discrete solutions or switching regulators are preferred.
How does the LT3061EDCB-3.3#TRPBF handle load transients, and what output capacitance is recommended?
The LT3061EDCB-3.3#TRPBF maintains stability with ceramic output capacitors down to very low ESR values, enabling fast transient response to step changes in load current (e.g., from 10mA to 100mA). However, excessively low ESR capacitors (e.g., <10mΩ) can destabilize the feedback loop. Analog Devices recommends using a combination of bulk tantalum or aluminum electrolytic and ceramic caps (typically 10µF + 1µF) to dampen ringing and ensure phase margin. Always verify transient recovery with actual load profiles rather than relying solely on simulation models.
Why might someone choose the LT3061EDCB-3.3#TRPBF over a switching regulator for a 3.3V rail?
The LT3061EDCB-3.3#TRPBF offers superior noise immunity, predictable transient behavior, and simple PCB layout compared to most switching regulators. In noise-sensitive analog or RF subsystems, its linear nature avoids switching harmonics that can couple into sensitive nodes. Although less efficient than buck converters at large input-to-output differentials, the trade-off is acceptable in low-power, quiet-rail applications where simplicity, cost, and electromagnetic compatibility outweigh efficiency concerns. The 90 µA IQ also favors always-on designs with intermittent activity.
Are there any known limitations in using the LT3061EDCB-3.3#TRPBF with wide-input-voltage systems?
Yes. While capable of 45V inputs, the LT3061EDCB-3.3#TRPBF lacks integrated input clamping beyond basic ESD protection. Therefore, in systems with inductive loads or long cable runs, transient voltages above 45V could damage the device. External TVS diodes or transient suppressors rated for the expected surge energy are strongly advised. Additionally, at very high input voltages (e.g., 40V), even light loads generate significant power dissipation ((40V - 3.3V) × 0.01A = 367mW), necessitating thermal derating and adequate heatsinking.
How does the LT3061EDCB-3.3#TRPBF support system diagnostics through its fault protection features?
The built-in over-current and over-temperature protections provide passive diagnostic capability by limiting fault propagation. During an overcurrent event, current foldback occurs silently, preventing catastrophic failure and allowing downstream logic to detect sustained anomalies via monitoring circuits. Over-temperature shutdown indicates thermal stress, prompting corrective action during maintenance. While the IC itself doesn’t signal faults externally, these behaviors can be leveraged in system design to trigger alerts or enter safe modes, enhancing overall mean time between failures (MTBF).
What precautions should be taken when replacing the LT3061EDCB-3.3#TRPBF in existing designs?
When substituting the LT3061EDCB-3.3#TRPBF, verify all electrical parameters including dropout, IQ, PSRR, and transient response under worst-case conditions. Check that the replacement’s package (8-WFDFN) matches footprint and solderability requirements. Ensure enable logic levels align with control signals, and confirm that output capacitor choices remain compatible. Also validate thermal performance using worst-case power calculations, especially if ambient temperature or input differential has changed in the revised design. Substitutes like LT3061IDCB-3.3 differ only in marking and packaging, not function—but always cross-reference latest datasheets.
How does the soft-start feature in the LT3061EDCB-3.3#TRPBF help prevent system-wide disturbances?
Soft-start gradually ramps up the output voltage upon power-up or after exiting shutdown, limiting inrush current into capacitive loads. This prevents tripping of upstream overcurrent protection circuits and reduces mechanical stress in motors or relays powered from the same source. It also improves EMI characteristics by avoiding sharp current transients. Designers can adjust soft-start timing indirectly via the enable pin sequencing or select external capacitor values if finer control is needed, though internal implementation is fixed per device version.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. LT3061EDCB-3.3#TRPBF

Product Attribute LT3061EDCB-3.3#TRMPBF LT3061EDCB-5#TRMPBF LT3061EDCB-5#TRPBF LT3061EDCB#TRMPBF
Part Number LT3061EDCB-3.3#TRMPBF LT3061EDCB-5#TRMPBF LT3061EDCB-5#TRPBF LT3061EDCB#TRMPBF
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Series - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
PSRR - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Current - Quiescent (Iq) - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Voltage - Input (Max) - - - -
Voltage - Output (Max) - - - -
Number of Regulators - - - -
Control Features - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Output (Min/Fixed) - - - -
Output Configuration - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Current - Output - - - -
Current - Supply (Max) - - - -
Protection Features - - - -
Voltage Dropout (Max) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad

LT3061EDCB-3.3#TRPBF Datasheet PDF

Download LT3061EDCB-3.3#TRPBF pdf datasheets and Analog Devices Inc. documentation for LT3061EDCB-3.3#TRPBF - Analog Devices Inc..

Datasheets
LT3061 Series.pdf
Environmental Information
Material Declaration LT3061EDCB-3.3#TRPBF.pdf
Other Related Documents
Tape and Reel Packaging.pdf

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LT3061EDCB-3.3#TRPBF Image

LT3061EDCB-3.3#TRPBF

Analog Devices Inc.
98D-LT3061EDCB-3.3#TRPBF

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