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LT3094EMSE#TRPBF

IC REG LIN NEG ADJ 500MA 12MSOP

Part Number: LT3094EMSE#TRPBF

Manufacturer: Analog Devices Inc.

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

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

Datasheet:: LT3094EMSE#TRPBF.pdf

Description: IC REG LIN NEG ADJ 500MA 12MSOP

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

LT3094EMSE#TRPBF −20V, 500mA, Ultralow Noise, Ultrahigh PSRR Negative Linear Regulator

A comprehensive technical overview of the LT3094EMSE#TRPBF, a high-performance negative low-dropout linear regulator from Analog Devices featuring 500mA output current, −1.8V to −20V wide input range, 0.8µVRMS ultralow output noise, and 74dB PSRR at 1MHz. Covers device function, core features, electrical specifications, 12-lead MSOP-EP package, pin configuration, typical applications, and replacement selection guidance.

Analog Devices 12-MSOP-EP −1.8V to −20V

Device Classification Ultralow Noise Negative LDO Voltage Regulator

Part Number: LT3094EMSE#TRPBF

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +125°C

PRODUCT OVERVIEW

What Is the LT3094EMSE#TRPBF?

LT3094EMSE#TRPBF is a high-performance negative low-dropout linear regulator from Analog Devices featuring Linear Technology's ultralow noise and ultrahigh PSRR architecture for powering noise-sensitive applications.[reference:0] Designed as a precision current reference followed by a high-performance voltage buffer, the LT3094 can be easily paralleled to further reduce noise, increase output current, and spread heat on the PCB.[reference:1][reference:2]

The LT3094EMSE#TRPBF operates with an input voltage range of −1.8V to −20V and delivers an adjustable output voltage from 0V to −19.5V.[reference:3][reference:4] It supplies 500mA at a typical 235mV dropout voltage.[reference:5] Operating quiescent current is nominally 2.35mA and drops to 3µA in shutdown.[reference:6][reference:7]

The device offers ultralow RMS noise of 0.8µVRMS (10Hz to 100kHz) and ultralow spot noise of 2.2nV/√Hz at 10kHz, with ultrahigh PSRR of 74dB at 1MHz.[reference:8] The LT3094's wide output voltage range (0V to −19.5V) error amplifier operates in unity-gain and provides virtually constant output noise, PSRR, bandwidth, and load regulation independent of the programmed output voltage.[reference:9] The regulator features programmable current limit, fast start-up capability, programmable power-good to indicate output voltage regulation, and a VIOC pin that controls an upstream regulator to minimize power dissipation and optimize PSRR.[reference:10] The LT3094 is stable with a minimum 10µF ceramic output capacitor.[reference:11] The LT3094EMSE#TRPBF is offered in a 12-lead MSOP-EP package with an exposed pad and is rated for operation from –40°C to +125°C. The device is recommended for new designs and is in active production.[reference:12][reference:13][reference:14]

Ultralow Noise Negative LDO 0.8µVRMS output noise (10Hz–100kHz) and 2.2nV/√Hz spot noise at 10kHz for noise-sensitive negative supply rails.[reference:15]

Wide VIN & Adjustable VOUT −1.8V to −20V input, 0V to −19.5V adjustable output with 500mA output current.[reference:16][reference:17]

Ultrahigh PSRR 74dB at 1MHz with virtually constant performance across the entire output voltage range.[reference:18]

DEVICE HIGHLIGHTS

Key Features and Benefits of LT3094EMSE#TRPBF

Ultralow Noise (0.8µVRMS)

0.8µVRMS output noise (10Hz–100kHz) and 2.2nV/√Hz spot noise at 10kHz make this LDO ideal for powering noise-sensitive negative supply rails such as PLLs, VCOs, and high-speed ADCs.[reference:19][reference:20]

Ultrahigh PSRR

74dB PSRR at 1MHz with virtually constant performance across the entire output voltage range, delivering excellent ripple rejection for demanding RF and instrumentation applications.[reference:21][reference:22]

Wide Input & Output Range

Operates from −1.8V to −20V input with an adjustable output from 0V to −19.5V, accommodating a broad spectrum of negative supply applications.[reference:23][reference:24]

500mA Output with Low Dropout

Delivers 500mA output current with a typical 235mV dropout voltage, providing high efficiency in low-headroom designs.[reference:25][reference:26]

Easy Paralleling for Higher Current

Designed as a precision current reference followed by a high-performance voltage buffer, the LT3094 can be easily paralleled to further reduce noise, increase output current, and spread heat on the PCB.[reference:27][reference:28]

Compact 12-Lead MSOP-EP Package

Available in a thermally enhanced 12-lead MSOP-EP package with exposed pad for optimal thermal performance, ideal for space-constrained designs.[reference:29]

REFERENCE DATA

Technical Specifications for LT3094EMSE#TRPBF

Part Number	LT3094EMSE#TRPBF	Manufacturer	Analog Devices
Device Type	Ultralow Noise Negative LDO Voltage Regulator	Output Current	500mA[reference:30][reference:31]
Input Voltage Range	−1.8V to −20V[reference:32]	Output Voltage Range	0V to −19.5V (Adjustable)[reference:33][reference:34]
Dropout Voltage (Typical)	235mV @ 500mA[reference:35][reference:36]	Dropout Voltage (Max)	0.41V @ 500mA[reference:37]
Output Noise (RMS)	0.8µVRMS (10Hz–100kHz)[reference:38]	Output Noise (Spot)	2.2nV/√Hz at 10kHz[reference:39]
PSRR (1MHz)	74dB[reference:40]	PSRR (120Hz–10MHz)	108dB ~ 28dB[reference:41][reference:42]
Quiescent Current (Iq)	2.35mA (Typical)[reference:43][reference:44]	Quiescent Current (Max)	23mA[reference:45]
Shutdown Current	3µA[reference:46]	SET Pin Current	100µA[reference:47]
Package / Case	12-TSSOP-EP (0.118", 3.00mm Width)[reference:48]	Supplier Device Package	12-MSOP-EP[reference:49]
Package Body Size	3.00mm × 3.00mm	Pin Count	12[reference:50]
Mounting Type	Surface Mount[reference:51]	Operating Temperature	-40°C to +125°C[reference:52][reference:53]
Protection Features	Over Current (Foldback), Over Temperature, Short Circuit, UVLO[reference:54][reference:55]	Control Features	Enable, Power Good, Soft Start, VIOC, Programmable Current Limit[reference:56][reference:57]
Minimum Output Capacitor	10µF Ceramic[reference:58][reference:59]	Moisture Sensitivity Level	MSL 1 - Unlimited[reference:60]
RoHS	ROHS3 Compliant[reference:61]	REACH Status	REACH Unaffected[reference:62]
Packaging	Tape & Reel (2,500 per Reel)[reference:63]	Product Status	Recommended for New Designs / Active[reference:64][reference:65]
ECCN	EAR99[reference:66]	SVHC	No SVHC

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use.

DESIGN REFERENCE

Circuit Considerations for LT3094EMSE#TRPBF

Output Voltage Programming & Key Features

The LT3094EMSE#TRPBF output voltage is set with a single resistor:

Output Voltage Programming: Single resistor programs the output voltage from 0V to −19.5V[reference:67]
SET Pin Current: 100µA with ±1% initial accuracy[reference:68]
Output Voltage Range: 0V to −19.5V, maintaining unity-gain operation for constant noise and PSRR performance[reference:69]
Programmable Current Limit: Allows setting of maximum output current[reference:70]
Fast Start-Up: Programmable soft-start capability[reference:71]
Power Good: Programmable power-good indicator for output voltage regulation[reference:72]
VIOC Pin: Controls upstream regulator to minimize power dissipation and optimize PSRR[reference:73][reference:74]

PCB and Power-Supply Guidance

LDO regulator performance depends on layout and component selection:

Output Capacitor: Stable with a minimum 10µF ceramic output capacitor[reference:75][reference:76]
Single Capacitor: A single capacitor improves both noise and PSRR performance[reference:77]
Paralleling: Can be easily paralleled to further reduce noise, increase output current, and spread heat on the PCB[reference:78]
Exposed Pad: The exposed pad on the MSOP-EP package must be soldered to the PCB for optimal thermal performance
PCB Layout: Keep the SET pin resistor trace short and close to the device for accurate voltage setting
Verify the recommended PCB footprint from the official datasheet prior to production

12-LEAD MSOP-EP (3mm × 3mm)

Pin Configuration Reference for LT3094EMSE#TRPBF

3094

MSOP-EP TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The MSOP-EP package has 12 pins with a 3.00mm × 3.00mm body size. The exposed pad must be soldered to the PCB for optimal thermal and electrical performance.[reference:79]

1 OUT Regulated Output - Connect to load

2 OUT Regulated Output - Connect to load

3 OUT Regulated Output - Connect to load

4 OUT Regulated Output - Connect to load

5 PG Power Good - Open-drain output indicates output voltage regulation[reference:80]

6 SS Soft-Start - Capacitor programs output ramp rate[reference:81]

7 ILIM Current Limit - Resistor programs current limit threshold[reference:82]

8 SET Output Voltage Set - Resistor to ground programs output voltage[reference:83]

9 IN Input Voltage - −1.8V to −20V[reference:84]

10 IN Input Voltage - −1.8V to −20V[reference:85]

11 EN/UVLO Enable / Undervoltage Lockout - Bipolar precision enable with programmable UVLO threshold[reference:86]

12 VIOC VIOC - Controls upstream regulator to minimize power dissipation and optimize PSRR[reference:87]

APPLICATION AREAS

Typical Applications for LT3094EMSE#TRPBF

RF & Precision Power Supplies

Ultralow noise and ultrahigh PSRR make this LDO ideal for powering sensitive RF circuits including VCOs, PLLs, and synthesizers.[reference:88]

High-Speed Data Converters

Provides clean negative power rails for high-resolution ADCs and DACs, maintaining signal integrity in precision measurement systems.[reference:89]

Medical Applications

Ultralow noise performance suitable for medical diagnostic and imaging equipment requiring clean analog supplies.[reference:90]

Very Low Noise Instrumentation

Test and measurement equipment, data acquisition systems, and analytical instruments benefit from the device's ultralow noise characteristics.[reference:91]

Post-Regulator for Switching Supplies

Provides clean, low-noise post-regulation for switching power supplies in noise-sensitive applications.[reference:92]

Industrial & Automotive

Wide input voltage range and robust protection features suit industrial sensors and automotive infotainment applications.

REPLACEMENT GUIDANCE

Selecting an Alternative for LT3094EMSE#TRPBF

A replacement for the LT3094EMSE#TRPBF should not be selected solely by product category. The electrical characteristics, package, and pin configuration must be evaluated against the specific circuit requirements. The following alternatives are documented in the official Analog Devices product pages and datasheets.

Output current: 500mA

Input voltage range: −1.8V to −20V

Output voltage range: 0V to −19.5V

Output noise: 0.8µVRMS

PSRR: 74dB at 1MHz

Package: 12-MSOP-EP

Temperature range: –40°C to 125°C

Protection: Overcurrent, thermal, UVLO, short-circuit

Family alternatives:

Part Number	Output Current	Package	Packaging	Carrier Quantity
LT3094EMSE#TRPBF	500mA	12-MSOP-EP	Tape & Reel	2,500[reference:93]
LT3094EMSE#PBF	500mA	12-MSOP-EP	Tube	-
LT3094EDD#TRPBF	500mA	10-DFN (3mm × 3mm)	Tape & Reel	2,500
LT3094IMSE#TRPBF	500mA	12-MSOP-EP	Tape & Reel	2,500

All alternative part numbers listed above are documented in the official Analog Devices product pages. The LT3094EMSE#TRPBF is the E-Grade (–40°C to 125°C) version in 12-MSOP-EP package with tape-and-reel packaging (2,500 units per reel).[reference:94][reference:95] For tube packaging, consider LT3094EMSE#PBF. For a smaller package option (DFN), consider the LT3094EDD#TRPBF versions. For I-Grade (–40°C to 125°C) extended temperature options, consider LT3094IMSE#TRPBF. Select based on package, packaging, and temperature grade requirements.

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MANUFACTURER INFORMATION

Analog Devices

The LT3094 (LT3094EMSE#TRPBF) belongs to the LT3094 family of ultralow noise, ultrahigh PSRR negative linear regulators from Analog Devices. The device features Linear Technology's ultralow noise and ultrahigh PSRR architecture for powering noise-sensitive applications.[reference:96] Designed as a precision current reference followed by a high-performance voltage buffer, the LT3094 can be easily paralleled to further reduce noise, increase output current, and spread heat on the PCB.[reference:97] The LT3094 family is recommended for new designs and is widely used in RF infrastructure, precision instrumentation, medical equipment, and high-end audio applications.[reference:98]

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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Specifications

Product Attribute: Attribute Value

Part Number: LT3094EMSE#TRPBF

Manufacturer: Analog Devices Inc.

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

Series: -

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

Packaging: Tape & Reel (TR)

Product Status: Active

Output Configuration: Negative

Output Type: Adjustable

Number of Regulators: 1

Voltage - Input (Max): -2.3V

Voltage - Output (Min/Fixed): -19.5V

Voltage - Output (Max): 0V

Voltage Dropout (Max): 0.41V @ 500mA

Current - Output: 500mA

Current - Quiescent (Iq): 2.35 mA

Current - Supply (Max): 23 mA

PSRR: 108dB ~ 28dB (120Hz ~ 10MHz)

Control Features: Enable, Power Good, Soft Start

Protection Features: Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)

Operating Temperature: -40°C ~ 125°C

Grade: -

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 12-MSOP-EP

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Part Number: LT3094EMSE#TRPBF

Manufacturer: Analog Devices Inc.

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

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

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