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LT3042EMSE#TRPBF

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IC REG LIN POS ADJ 200MA 10MSOP

Part Number: LT3042EMSE#TRPBF

Manufacturer: Analog Devices Inc.

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

Package: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad

Datasheet:: LT3042EMSE#TRPBF.pdf

Description: IC REG LIN POS ADJ 200MA 10MSOP

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

LT3042EMSE#TRPBF 20V, 200mA, Ultralow Noise, Ultrahigh PSRR RF Linear Regulator

A comprehensive technical overview of the LT3042EMSE#TRPBF, a high performance low dropout linear regulator from Analog Devices featuring ultralow noise and ultrahigh PSRR architecture for powering noise sensitive RF applications. Covers device function, core features, electrical specifications, 10-lead MSOP package, pin configuration, typical applications, and replacement selection guidance.

Analog Devices / Linear Technology 10-Lead MSOP with Exposed Pad 1.8V to 20V Input

Device Classification Ultralow Noise LDO Voltage Regulator

Part Number: LT3042EMSE#TRPBF

Mounting Type: Surface Mount

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

PRODUCT OVERVIEW

What Is the LT3042EMSE#TRPBF?

LT3042EMSE#TRPBF is a high performance low dropout linear regulator from Analog Devices (formerly Linear Technology), featuring ultralow noise and ultrahigh PSRR architecture for powering noise sensitive RF applications. The device is designed as a precision current reference followed by a high performance voltage buffer, and can be easily paralleled to further reduce noise, increase output current and spread heat on the PCB.[reference:0][reference:1]

The LT3042EMSE#TRPBF supplies 200mA at a typical 350mV dropout voltage. Operating quiescent current is nominally 2mA and drops to <<1µA in shutdown.[reference:2][reference:3] The device features a wide output voltage range (0V to 15V) while maintaining unity-gain operation, providing virtually constant output noise, PSRR, bandwidth and load regulation, independent of the programmed output voltage.[reference:4][reference:5]

The LT3042EMSE#TRPBF is stable with a minimum 4.7µF ceramic output capacitor. Built-in protection includes reverse battery protection, reverse current protection, internal current limit with foldback and thermal limit with hysteresis.[reference:6][reference:7] The device is available in a thermally enhanced 10-lead MSOP package and is Recommended for New Designs with AEC-Q100 qualification for automotive applications.[reference:8][reference:9]

Ultralow Noise 0.8µVRMS output noise (10Hz–100kHz) and 2nV/√Hz spot noise at 10kHz for noise-sensitive RF applications.[reference:10][reference:11]

Ultrahigh PSRR 79dB at 1MHz provides excellent rejection of power-supply ripple and switching converter noise.[reference:12][reference:13]

Wide Input & Output Range 1.8V to 20V input voltage range with 0V to 15V adjustable output.[reference:14][reference:15]

DEVICE HIGHLIGHTS

Key Features and Benefits of LT3042EMSE#TRPBF

Ultralow Output Noise

0.8µVRMS output noise (10Hz–100kHz) and 2nV/√Hz spot noise at 10kHz ensure clean power rails for noise-sensitive RF and precision analog applications.[reference:16][reference:17]

Ultrahigh PSRR

79dB PSRR at 1MHz provides excellent rejection of power-supply ripple and switching converter noise, making it ideal for post-regulator applications.[reference:18][reference:19]

Single Resistor Output Setting

100µA SET pin current with ±1% initial accuracy allows output voltage programming from 0V to 15V with a single resistor.[reference:20][reference:21]

Wide Input & Output Range

Input voltage: 1.8V to 20V; Output voltage: 0V to 15V (adjustable). Output current: 200mA.[reference:22][reference:23]

Parallelable Design

Can be easily paralleled to further reduce noise, increase output current and spread heat on the PCB.[reference:24][reference:25]

Comprehensive Protection

Reverse battery protection, reverse current protection, internal current limit with foldback, and thermal limit with hysteresis for robust system design.[reference:26][reference:27]

REFERENCE DATA

Technical Specifications for LT3042EMSE#TRPBF

Part Number	LT3042EMSE#TRPBF	Manufacturer	Analog Devices (Linear Technology)
Device Type	Ultralow Noise LDO Voltage Regulator	Output Current	200mA
Input Voltage Range	1.8V to 20V	Output Voltage Range	0V to 15V
Dropout Voltage @ 200mA	350mV (Typical)	Output Noise (10Hz–100kHz)	0.8µVRMS
Spot Noise @ 10kHz	2nV/√Hz	PSRR @ 1MHz	79dB
PSRR (120Hz–10MHz)	117dB ~ 56dB	Quiescent Current	2mA (Typical)
Shutdown Current	<<1µA	SET Pin Current	100µA (±1% Initial Accuracy)
Bandwidth	1MHz	Minimum Output Capacitor	4.7µF Ceramic
Package	10-Lead MSOP with Exposed Pad	Package Body Size	3.00mm × 4.90mm
Mounting Type	Surface Mount	Operating Temperature	-40°C to +125°C
Storage Temperature	-65°C to 150°C	Qualification	AEC-Q100 Qualified
Moisture Sensitivity Level	MSL 1 - Unlimited	RoHS	Yes
SVHC	No SVHC	ECCN	EAR99
Packaging	Tape & Reel (2,500 per Reel)	Manufacturer Standard Package	2,500
Product Status	Active / Recommended for New Designs	HTSUS	8542.39.0070

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 LT3042EMSE#TRPBF

Output Voltage Programming

The LT3042EMSE#TRPBF output voltage is programmed with a single resistor:

Output Voltage Formula: V_OUT = I_SET × R_SET, where I_SET = 100µA (typical)[reference:28]
Output Voltage Range: 0V to 15V[reference:29]
SET Pin Current Accuracy: ±1% initial accuracy[reference:30]
Single Resistor: A single resistor sets the output voltage, simplifying design[reference:31]

PCB and Power-Supply Guidance

LDO regulator performance depends on layout, bypassing, and component selection:

Output Capacitor: Minimum 4.7µF ceramic output capacitor required for stability[reference:32]
Single Capacitor: A single capacitor improves noise and PSRR performance[reference:33][reference:34]
Parallel Operation: Multiple LT3042 devices can be paralleled to reduce noise, increase output current, and spread heat on the PCB[reference:35]
Protection Features: Built-in reverse battery protection, reverse current protection, current limit with foldback, and thermal limit with hysteresis[reference:36]
Power Good: Programmable power good output indicates output voltage regulation[reference:37]
Enable/UVLO: Precision enable and undervoltage lockout for controlled power sequencing[reference:38]
Verify the recommended PCB footprint from the official datasheet before production

10-LEAD MSOP WITH EXPOSED PAD

Pin Configuration Reference for LT3042EMSE#TRPBF

LT3042

MSOP (MSE) TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The MSE package has 10 pins with exposed pad (Pin 11) connected to GND.[reference:39]

1 IN Input Supply Voltage - 1.8V to 20V

2 EN/UV Enable / Undervoltage Lockout - Precision threshold with hysteresis

3 NC No Connect - Not internally connected

4 PGFB Power Good Feedback - Programmable power good threshold input

5 PG Power Good Output - Open-drain, indicates output voltage regulation

6 ILIM Programmable Current Limit - Resistor to ground sets current limit

7 SET Output Voltage Program and Noise Reduction - Connect resistor to ground sets V_OUT

8 GND Ground - Signal ground reference

9 OUTS Output Voltage Sense - Kelvin sense connection to output

10 OUT Regulated Output Voltage - 0V to 15V

APPLICATION AREAS

Typical Applications for LT3042EMSE#TRPBF

RF Power Supplies

PLLs, VCOs, mixers, LNAs, and other noise-sensitive RF circuitry.[reference:40]

Very Low Noise Instrumentation

Precision measurement equipment requiring ultralow noise power supplies.[reference:41]

High Speed / High Precision Data Converters

Supply rails for ADCs and DACs requiring low noise and high PSRR.[reference:42]

Medical Applications

Imaging and diagnostic equipment.[reference:43]

Post-Regulator for Switching Supplies

Filtering output noise from switching regulators with 79dB PSRR at 1MHz.[reference:44]

Precision Power Supplies

High-accuracy, low-noise power supplies for test and measurement systems.[reference:45]

REPLACEMENT GUIDANCE

Selecting an Alternative for LT3042EMSE#TRPBF

A replacement for the LT3042EMSE#TRPBF should not be selected only by product category. The electrical characteristics, package, and pin configuration must be evaluated against the actual circuit requirements. The following alternatives are documented in the official Analog Devices datasheet.

Input voltage range (1.8V–20V)

Output voltage range (0V–15V)

Output current capability (200mA)

Output noise (0.8µVRMS)

PSRR (79dB @ 1MHz)

Package (10-lead MSOP with EP)

Temperature range (–40°C to 125°C)

AEC-Q100 automotive qualification

Family alternatives:

Part Number	Package	Packaging	Temperature Grade
LT3042EMSE#TRPBF	10-MSOP-EP	Tape & Reel (2,500)	E-Grade (-40°C to 125°C)
LT3042EMSE#PBF	10-MSOP-EP	Tube	E-Grade (-40°C to 125°C)
LT3042EDD#TRPBF	10-DFN (3mm × 3mm)	Tape & Reel	E-Grade (-40°C to 125°C)
LT3042IDD#TRPBF	10-DFN (3mm × 3mm)	Tape & Reel	I-Grade (-40°C to 125°C)
LT3042IMSE#TRPBF	10-MSOP-EP	Tape & Reel	I-Grade (-40°C to 125°C)

All alternative part numbers listed above are documented in the official Analog Devices datasheet. The LT3042EMSE#TRPBF is the E-Grade version in MSOP package with tape-and-reel packaging (2,500 units per reel). For tube packaging, consider LT3042EMSE#PBF. For DFN package options, consider LT3042EDD#TRPBF or LT3042IDD#TRPBF. Select based on package, packaging, and temperature grade needs.

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MANUFACTURER INFORMATION

Analog Devices / Linear Technology

The LT3042 (LT3042EMSE#TRPBF) belongs to the ultralow noise LDO voltage regulator portfolio of Linear Technology, now part of Analog Devices. The device is designed for powering noise-sensitive RF applications with ultralow noise (0.8µVRMS) and ultrahigh PSRR (79dB at 1MHz) architecture.[reference:46]

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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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LT3042EMSE#TRPBF Technical Information

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Specifications

Product Attribute: Attribute Value

Part Number: LT3042EMSE#TRPBF

Manufacturer: Analog Devices Inc.

Package: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad

Series: -

Package/Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad

Packaging: Tape & Reel (TR)

Product Status: Active

Output Configuration: Positive

Output Type: Adjustable

Number of Regulators: 1

Voltage - Input (Max): 20V

Voltage - Output (Min/Fixed): 0V

Voltage - Output (Max): 15V

Voltage Dropout (Max): 0.35V @ 200mA (Typ)

Current - Output: 200mA

Current - Quiescent (Iq): -

Current - Supply (Max): -

PSRR: 117dB ~ 56dB (120Hz ~ 10MHz)

Control Features: Current Limit, Enable, Power Good

Protection Features: Over Temperature, Reverse Polarity

Operating Temperature: -40°C ~ 125°C

Grade: -

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 10-MSOP-EP

Frequently Asked Questions

1. How can I order LT3042EMSE#TRPBF from Haishengye Electronics?

Submit an RFQ directly on this page with your required quantity, target price and delivery requirements. Our sales team will review the request and provide a quotation.

2. How does Haishengye Electronics verify the quality of LT3042EMSE#TRPBF?

We work with qualified suppliers and review sourcing channels, traceability, packaging and product condition before shipment.

3. Are the stock and price of LT3042EMSE#TRPBF updated in real time?

Electronic component inventory and prices may change frequently. Displayed values are references, and final stock and pricing will be confirmed in the quotation.

4. Which payment methods are supported?

Wire Transfer, PayPal, Alipay, WeChat, Credit Card, Western Union, MoneyGram and Escrow may be supported depending on the order and destination.

5. How is international shipping arranged?

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6. What is the return or replacement process for LT3042EMSE#TRPBF?

Contact our sales team within the agreed period if there are quantity differences, incorrect items or clear external defects. Products should remain unused and in their original packaging.

7. Can I request technical support for LT3042EMSE#TRPBF?

Yes. Contact our team for datasheets, package details, product specifications, alternative parts and sourcing assistance.

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Part Number: LT3042EMSE#TRPBF

Manufacturer: Analog Devices Inc.

Package: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad

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

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