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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - LinearLT3050EMSE#TRPBF
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LT3050EMSE#TRPBF - Analog Devices Inc.

Manufacturer Part Number
LT3050EMSE#TRPBF
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-LT3050EMSE#TRPBF
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
15,405 pcs available, New & Original
Parts Description
IC REG LIN POS ADJ 100MA 12MSOP
Package
12-MSOP-EP
Data sheet
LT3050EMSE#TRPB.pdf

Datasheets

LT3050.pdf

Environmental Information

Material Declaration LT3050EMSE#TRPBF.pdf

PCN Design/Specification

Mult Dev Mark Chg 4/Feb/2020.pdf

Other Related Documents

Tape and Reel Packaging.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 15405
  • Unit Price: $1.203
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $1.203 $1.20
10+ $1.04 $10.40
30+ $0.937 $28.11
100+ $0.832 $83.20
500+ $0.784 $392.00
1000+ $0.764 $764.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

LT3050EMSE#TRPBF Tech Specifications
Analog Devices Inc. - LT3050EMSE#TRPBF technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - LT3050EMSE#TRPBF

Product Attribute Attribute Value
Manufacturer Analog Devices, Inc.
Voltage Dropout (Max) 0.55V @ 100mA
Voltage - Output (Min/Fixed) 0.6V
Voltage - Output (Max) 44.5V
Voltage - Input (Max) 45V
Supplier Device Package 12-MSOP-EP
Series -
Protection Features Over Current, Over Temperature, Reverse Polarity
Package / Case 12-TSSOP (0.118", 3.00mm Width) Exposed Pad
Package Tape & Reel (TR)
PSRR 85dB (120Hz)
Product Attribute Attribute Value
Output Type Adjustable
Output Configuration Positive
Operating Temperature -40°C ~ 125°C
Number of Regulators 1
Mounting Type Surface Mount
Current - Supply (Max) 5.2 mA
Current - Quiescent (Iq) 90 µA
Current - Output 100mA
Control Features Current Limit, Enable, Soft Start
Base Product Number LT3050

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

Parts Introduction

LT3050EMSE#TRPBF Image
LT3050EMSE#TRPBF (1)

Manufacturer Part Number

LT3050EMSE#TRPBF

Manufacturer

Analog Devices

Introduction

The LT3050 is a cutting-edge low dropout (LDO) linear regulator specifically designed for power-sensitive applications. Offering precision, reliability, and flexibility, it is ideal for delivering stable voltage supply.

Product Features and Performance

Adjustable output voltage from 0.6V to 44.5V

Input voltage capability up to 45V

Low dropout voltage: 0.55V @ 100mA

Output current capability of 100mA

Low quiescent current: 90 µA

High power supply rejection ratio (PSRR): 85dB (120Hz)

Features current limit, enable, and soft start control

Overcurrent and over-temperature protection

Reverse polarity protection

Operates across a -40°C to 125°C temperature range

Product Advantages

High flexibility in output voltage settings

Ideal for high-input voltage applications

Minimizes power loss due to low dropout

Supports battery-powered and energy-efficient designs with low Iq

High PSRR ensures stable output despite variations in input voltage

Comprehensive protection features enhance reliability and longevity

Key Technical Parameters

Voltage - Input (Max): 45V

Voltage - Output (Min/Fixed): 0.6V

Voltage - Output (Max): 44.5V

Voltage Dropout (Max): 0.55V @ 100mA

Current - Output: 100mA

Current - Quiescent (Iq): 90 µA

PSRR: 85dB (120Hz)

Package: 12-TSSOP (0.118", 3.00mm Width) Exposed Pad

Quality and Safety Features

Protected against over-current and over-temperature conditions

Reverse polarity protection ensures safety in case of wrong polarity connections

Compatibility

Surface mount, compatible with automated PCB assembly processes

12-TSSOP exposed pad package for enhanced thermal dissipation

Application Areas

Power supply for battery-operated devices

Portable and handheld electronics

Automotive electronics

Industrial control systems

Telecommunications equipment

Product Lifecycle

Status: Active

This product is currently active with no immediate discontinuation notice, ensuring long-term availability for designs and projects. Upgrades or replacement products can be evaluated as Analog Devices continuously develops new technologies.

Several Key Reasons to Choose This Product

Versatile input and adjustable output voltage range for diverse applications

Low dropout and quiescent current for efficient power management

Robust protection features ensure reliability under various conditions

High PSRR enhances performance in noise-sensitive applications

Broad operating temperature range suitable for harsh environments

Long product lifecycle and support from Analog Devices

Ideal for designs requiring minimal power loss and high voltage flexibility

Frequently Asked Questions(FAQ)

How does the LT3050EMSE#TRPBF compare to the LT3042 in terms of dropout voltage and quiescent current when powering a 3.3V system from a 3.8V Li-ion battery at 50mA load?
At 50mA output, the LT3050EMSE#TRPBF exhibits a maximum dropout voltage of 0.55V under 100mA conditions, resulting in an effective minimum input voltage of approximately 3.85V for stable 3.3V regulation—making it marginally suitable for a 3.8V battery source but operating near its edge. In contrast, the LT3042 maintains a significantly lower dropout of 270mV at 50mA, allowing reliable operation down to 3.57V input, which provides a much larger headroom from a 3.8V battery. Additionally, the LT3050EMSE#TRPBF consumes 90µA of quiescent current, while the LT3042 draws only 20µA, offering superior efficiency in low-power standby scenarios. This makes the LT3042 more appropriate for energy-sensitive battery-powered applications.
What are the implications of the LT3050EMSE#TRPBF’s reverse polarity protection and thermal shutdown features during automotive transient events like load dump?
The LT3050EMSE#TRPBF includes internal reverse polarity protection that clamps or disables the regulator if the input voltage is inverted, preventing damage to downstream circuitry. However, this protection is limited to reverse voltage conditions and does not address high-energy transients such as ISO 7637-2 load dumps, which can exceed 45V. While the device supports an input voltage up to 45V, sustained exposure to such surges without external TVS diodes may stress internal components. Thermal shutdown activates at approximately 165°C junction temperature, providing over-temperature protection during prolonged overloads. For automotive use, designers should implement external transient suppressors alongside the LT3050EMSE#TRPBF to ensure robustness beyond what the IC alone guarantees.
Can the LT3050EMSE#TRPBF be used in a dual-output configuration with two independent adjustable outputs using only passive components?
No, the LT3050EMSE#TRPBF is a single-channel linear regulator with one adjustable output. It cannot generate two independent regulated voltages from a single device without additional circuitry. To achieve dual outputs, two separate LT3050EMSE#TRPBF regulators or a different multi-output regulator must be employed. Attempting to split the output using resistors or dividers would compromise regulation accuracy and feedback stability due to loading effects. Therefore, for systems requiring multiple rails, the architecture must accommodate discrete regulators per channel to maintain performance and reliability.
How does the PSRR of the LT3050EMSE#TRPBF perform at higher frequencies relevant to switching power supplies, and what impact does this have on noise-sensitive analog circuits?
The LT3050EMSE#TRPBF offers a PSRR of 85dB at 120Hz, which degrades at higher frequencies typical of modern switching regulators. At 1kHz, PSRR typically falls to around 60–65dB, and by 100kHz, it may drop below 40dB depending on layout and bypassing. This attenuation means that switching noise from adjacent DC-DC converters can couple through to the LT3050EMSE#TRPBF’s output unless adequate filtering is applied. For precision analog subsystems such as data converters or sensor interfaces, this necessitates careful PCB planning—including low-ESL capacitors close to the input and output pins—to preserve signal integrity and minimize supply-induced distortion.
What are the key differences between the LT3050EMSE#TRPBF and the fixed-output version (e.g., LT3050) when designing a variable voltage reference for a motor control application?
The LT3050EMSE#TRPBF is an adjustable variant with a 0.6V minimum output, enabling flexible voltage setting via an external resistor divider. In contrast, the fixed-output LT3050 provides predefined voltages such as 3.3V or 5V without external programming. For motor control applications requiring dynamic adjustment of gate drive levels or adaptive biasing, the adjustable LT3050EMSE#TRPBF offers greater design flexibility. However, the fixed version eliminates divider-related noise and improves transient response due to reduced component count. When selecting between them, engineers must weigh programmability needs against simplicity and stability requirements in high-noise environments common in motor drives.
Is it feasible to parallel two LT3050EMSE#TRPBF regulators to increase total output current beyond 100mA?
Parallel operation of LT3050EMSE#TRPBF devices is theoretically possible but requires careful implementation due to inherent current imbalance risks. Without active current sharing circuitry, slight variations in threshold voltage or temperature coefficients cause uneven load distribution, potentially leading to thermal runaway in one unit. While some designs use series resistors for passive balancing, these introduce voltage drops and reduce overall efficiency. For currents exceeding 100mA, Analog Devices recommends using dedicated multiphase or paralleling-capable regulators instead. If parallel use is unavoidable, external current-sharing resistors and thermal monitoring should be incorporated to mitigate failure modes.
What considerations apply to layout and grounding when using the exposed pad of the LT3050EMSE#TRPBF in a compact industrial sensor node powered by a 12V supply?
The 12-MSOP-EP package of the LT3050EMSE#TRPBF includes an exposed thermal pad that must be soldered directly to a solid ground plane to ensure efficient heat dissipation and maintain junction temperatures within safe limits—especially important when dropping 12V to a lower rail under full load. Poor thermal management increases dropout-related power dissipation and raises the risk of thermal shutdown during continuous operation. A low-impedance connection between the exposed pad and the system GND also minimizes ground bounce and improves PSRR. In compact sensor nodes, designers should allocate sufficient copper area, avoid stitching vias under the pad, and place input/output capacitors as close as possible to minimize loop inductance and EMI susceptibility.
How does the soft-start feature of the LT3050EMSE#TRPBF influence inrush current when powering capacitive loads in telecom equipment?
The LT3050EMSE#TRPBF includes integrated soft-start functionality that gradually ramps up the output voltage upon enable, limiting inrush current into large bulk capacitors commonly found in telecom backplanes. This reduces stress on upstream components and prevents tripping of input fuses or brownout detectors. Typical soft-start times range from tens to hundreds of milliseconds, depending on capacitor value and ESR. Compared to regulators without soft-start, this feature enables safer hot-plug operations and improves system-level reliability by avoiding sudden current spikes. Designers should verify that soft-start duration aligns with their application’s power sequencing requirements to prevent timing conflicts with other subsystems.
What trade-offs exist between using the LT3050EMSE#TRPBF versus a switching regulator in a space-constrained medical device drawing 100mA from a 5V USB source?
The LT3050EMSE#TRPBF offers simplicity, low noise, and excellent transient response ideal for analog sections in medical devices, but suffers from lower efficiency (~80% at 5Vin→3.3Vout) compared to switching regulators (>90%). However, switching converters introduce electromagnetic interference (EMI) that may interfere with sensitive measurements unless heavily filtered—a concern mitigated by the LT3050EMSE#TRPBF’s linear nature. Size-wise, both can fit in small packages, but switching solutions often require inductors and multiple capacitors, increasing BOM complexity. For applications where noise floor and isolation matter more than efficiency, the LT3050EMSE#TRPBF remains preferable despite its higher power loss.
Does the LT3050EMSE#TRPBF support operation with negative input voltages relative to its own ground reference?
No, the LT3050EMSE#TRPBF is designed for positive input-to-output configurations only. Applying a negative input voltage with respect to its ground pin violates absolute maximum ratings and risks damaging internal ESD structures or triggering undefined behavior. While some LDOs support bidirectional operation with specific configurations, the LT3050EMSE#TRPBF lacks this capability. In systems where negative supply rails are present, alternative regulators with true bipolar input support or charge pumps must be considered. Misuse of the LT3050EMSE#TRPBF in such contexts compromises reliability and void warranty coverage.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. LT3050EMSE#TRPBF

Product Attribute LT3050EMSE-3.3#TRPBF LT3050EMSE-5#TRPBF LT3050EMSE#PBF LT3050EMSE-5#PBF
Part Number LT3050EMSE-3.3#TRPBF LT3050EMSE-5#TRPBF LT3050EMSE#PBF LT3050EMSE-5#PBF
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Voltage - Input (Max) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Output Type - Current - Unbuffered Voltage - Buffered -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Current - Output - - - -
Current - Supply (Max) - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -
Number of Regulators - - - -
Current - Quiescent (Iq) - - - -
Voltage Dropout (Max) - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
PSRR - - - -
Control Features - - - -
Voltage - Output (Min/Fixed) - - - -
Protection Features - - - -
Output Configuration - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Output (Max) - - - -

LT3050EMSE#TRPBF Datasheet PDF

Download LT3050EMSE#TRPBF pdf datasheets and Analog Devices Inc. documentation for LT3050EMSE#TRPBF - Analog Devices Inc..

Datasheets
LT3050.pdf
Environmental Information
Material Declaration LT3050EMSE#TRPBF.pdf
PCN Design/Specification
Mult Dev Mark Chg 4/Feb/2020.pdf
Other Related Documents
Tape and Reel Packaging.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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LT3050EMSE#TRPBF Image

LT3050EMSE#TRPBF

Analog Devices Inc.
32D-LT3050EMSE#TRPBF

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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