LT3094EMSE#TRPBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LT3094EMSE#TRPBF is a -20 V, 500 mA adjustable ultralow-noise negative LDO linear regulator from Analog Devices with a typical dropout voltage of only 235 mV and exceptional power-supply rejection ratio. It operates over a 2.3 V to 20 V input-output differential range in a 12-pin MSOP package. The device targets noise-sensitive analog and RF circuits, high-performance audio systems, and precision measurement instruments requiring a clean negative supply rail.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 12
- Lifecycle
- ACTIVE
- Datasheet
- LT3094EMSE#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.8800(MOQ 10)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT3094EMSE#TRPBF?
- Ultralow output noise and industry-leading PSRR deliver clean negative rails for sensitive analog circuits
- 500 mA output current at 235 mV typical dropout minimizes power dissipation in battery-powered designs
- -20 V maximum input-output differential supports a wide range of negative rail configurations
- Adjustable output voltage via external resistor network provides design flexibility across applications
- 12-pin MSOP package offers compact footprint with exposed thermal pad for efficient heat dissipation
What is LT3094EMSE#TRPBF used for?
The LT3094EMSE#TRPBF is the preferred negative rail regulator for noise-sensitive analog front ends in precision instrumentation, laboratory test equipment, and high-resolution data acquisition systems where output noise below 1 µV RMS is required. High-performance audio amplifier circuits and RF signal chain components such as VCOs and PLL synthesizers benefit from its ultralow noise and high PSRR, which suppress switching regulator ripple on the negative supply rail. Medical imaging equipment and optical detector bias circuits also use this LDO to provide stable, clean negative voltages up to -20 V at currents up to 500 mA.
What are the specifications of LT3094EMSE#TRPBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1666 |
| Date Of Intro | 2018-09-05 |
| YTEOL | 10 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Max | 0.41V |
| Dropout Voltage1-Nom | 0.235V |
| Input-Output Voltage Differential-Max | 20V |
| Input-Output Voltage Differential-Min | 2.3V |
| JESD-30 Code | R-PDSO-G12 |
| JESD-609 Code | e3 |
| Load Regulation-Max(%) | 0.01% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.5A |
| Output Voltage1-Max | 19.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP12,.19 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Regulator Type | ADJUSTABLE NEGATIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LT3094EMSE#TRPBF datasheet?
LT3094EMSE#TRPBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3094EMSE#TRPBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the typical dropout voltage of the LT3094EMSE#TRPBF at 500 mA, and how does this affect minimum input voltage selection?
The LT3094EMSE#TRPBF specifies a typical dropout voltage of 235 mV at 500 mA output current, with a maximum of 410 mV over temperature. For a regulated -5 V output at full 500 mA load, the input rail must be at least -5.41 V (worst-case dropout) to maintain regulation. This low dropout compared to older PNP-based negative LDOs—which often require 1 V to 2 V of headroom—allows a -6 V supply to efficiently power a -5 V rail without wasting 1 V across the regulator, reducing heat dissipation by roughly 530 mW at full load.
How does the LT3094's output noise performance compare to a standard negative LDO when used in a precision ADC reference supply?
The LT3094EMSE#TRPBF achieves output noise typically below 2 µV RMS in the 10 Hz to 100 kHz band, which is 5 to 10 times lower than a standard negative LDO such as the LM337 that may produce 20 µV to 50 µV RMS in the same bandwidth. For a 16-bit or 18-bit ADC with a -2.5 V reference rail, noise above 10 µV RMS on the supply can degrade SNR by several decibels. The LT3094's sub-2 µV noise floor keeps the reference rail contribution negligible relative to the ADC's intrinsic noise floor, preserving the full dynamic range of the converter.
Can multiple LT3094 regulators be paralleled to deliver more than 500 mA, and what is the recommended method?
Yes, the LT3094EMSE#TRPBF is designed to be paralleled with other LT3094 units to multiply output current in 500 mA increments. The recommended method uses a single small resistor (typically 10 mΩ to 50 mΩ) in series with each device's output pin before joining at a common output node, which balances current sharing by forcing equal IR drops across each parallel branch. Two paralleled LT3094s can deliver up to 1 A at the same ultralow noise specification, and four units in parallel support up to 2 A for demanding analog power rails in large instrumentation racks or RF test systems.
For an RF PLL synthesizer requiring a -3.3 V supply with high PSRR up to 1 MHz, does the LT3094EMSE#TRPBF meet the requirement?
The LT3094EMSE#TRPBF delivers greater than 70 dB PSRR at 1 MHz, which means it attenuates a 100 mV ripple on the input supply down to below 32 µV at the output. Most RF PLL synthesizers specify a minimum PSRR requirement of 40 dB to 60 dB on the VCO supply at frequencies up to 1 MHz to prevent reference spurs. The LT3094 exceeds this margin by 10 dB or more, making it a strong candidate for -3.3 V PLL supply rails where switching regulator ripple at hundreds of kilohertz would otherwise modulate the VCO frequency and raise phase noise floor above acceptable limits.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $7.7790 | $77.79 |
| 19+ | $5.1400 | $97.66 |
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| 500+ | $4.2125 | $2106.25 |
| 1000+ | $3.8800 | $3880.00 |
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