LT3042

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet (Rev. C) Product Selection Table

Part Models: 22
1ku List Price: Starting From $2.72

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Part Details

Ultralow RMS Noise: 0.8μV_RMS (10Hz to 100kHz)
Ultralow Spot Noise: 2nV/√Hz at 10kHz
Ultrahigh PSRR: 79dB at 1MHz
Output Current: 200mA
Wide Input Voltage Range: 1.8V to 20V
Single Capacitor Improves Noise and PSRR
100μA SET Pin Current: ±1% Initial Accuracy
Single Resistor Programs Output Voltage
High Bandwidth: 1MHz
Programmable Current Limit
Low Dropout Voltage: 350mV

Output Voltage Range: 0V to 15V
Programmable Power Good
Fast Start-Up Capability
Precision Enable/UVLO
Parallelable for Lower Noise and Higher Current
Internal Current Limit with Foldback
Minimum Output Capacitor: 4.7μF Ceramic
Reverse Battery and Reverse Current Protection
10-Lead MSOP and 3mm × 3mm DFN Packages
AEC-Q100 Qualified for Automotive Applications

Part Models: 22
1ku List Price: Starting From $2.72

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT3042EDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042EDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042EMSE#PBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042EMSE#TRPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042EMSE#WPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042EMSE#WTRPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042HDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042HDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042HMSE#PBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042HMSE#TRPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042HMSE#WPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042HMSE#WTRPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042IDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042IDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042IMSE#PBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042IMSE#TRPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042IMSE#WPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042IMSE#WTRPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042MPDD#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042MPDD#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042MPMSE#PBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3042MPMSE#TRPBF	10-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN
No Match Found
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0130_Form Material_Report
LT3042EMSE#PBF	PRODUCTION
LT3042EMSE#TRPBF	PRODUCTION
LT3042HMSE#PBF	PRODUCTION
LT3042HMSE#TRPBF	PRODUCTION
LT3042IMSE#PBF	PRODUCTION
LT3042IMSE#TRPBF	PRODUCTION
LT3042MPMSE#PBF	PRODUCTION
LT3042MPMSE#TRPBF	PRODUCTION
Jun 21, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices
		PCN22_0050_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT3042HMSE#WPBF
LT3042HMSE#WTRPBF
LT3042IMSE#WPBF
LT3042IMSE#WTRPBF

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Digital Power System Managers 1
LTC2975	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement
Positive Linear Regulators (LDO) 1
LT1762	RECOMMENDED FOR NEW DESIGNS	150mA, Low Noise, LDO Micropower Regulators

Parts	Product Life Cycle	Description
LT3045	RECOMMENDED FOR NEW DESIGNS	20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LT3042

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design

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Features and Benefits

Designed to cover full Tx signal chains with integrated MCU and user-friendly GUI for faster and easier integration
Supports fault event protection - overvoltage (OV), overcurrent (OC), and overtemperature (OT)
Supports ultrafast sub-µs GaN gate voltage switching ~ (<1 µs)
Supports ultrafast (<10 µs) fault event protection from detection up to GaN gate pinch-off
Wide range of gate bias voltages from -10 V to +10 V
Configurable power-up and power-down sequence

Product Details

The AD-PAARRAY3552R-SL reference design provides control, protection, and proper biasing sequence for GaN power amplifier (PA) arrays. The design incorporates the AD3553R high-speed, dual-channel, 16-bit DAC to support the ultrafast sub-µs voltage settling time of GaN gates.

Key fault events, including overvoltage, overcurrent, and overtemperature, are effectively managed by the LTC7000, a static switch driver responsible for system fault protection.

The on-board MAX32666 ultralow-power ARM^® Cortex^®-M4 microprocessor provides essential debug and programming features for a comprehensive software development experience with the system. The system's firmware is built on ADI's open-source no-OS framework and includes a user-friendly graphical interface (GUI) for evaluation. Updates are easily applied through an SWD UART bootloader, streamlining prototyping.

The system can be powered by an external +48 V supply, requiring high current capabilities.

APPLICATIONS

5G massive MIMOs
Macro base stations

Specifications
Fault Events
Fault	Default Limit
Overvoltage	+55 V
Overcurrent	3.5 A
Overtemperature	75°C
Output Ports
Port Name	No. of ports
GaN gate ports	6
+48 V Gan drain ports	4
+5 V ports	5
Enable ports	2
Power Supply
External	+48 V DC at 5 A
Operating Conditions
Temperature Range	45°C to +75°C

Resources

AD-PAARRAY3552R-SL User Guide

AD-PAARRAY3552R-S Design Support Files
10.9 M

Software

AD-PAARRAY3552R-SL Evaluation Software (Rev.1.0.0)
5.4 M

LT3042 Low Noise PLL/VCO Power Supply Board with Onboard 100MHz Reference Frequency

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Product Details

Demonstration Circuit 2429A is a PLL/VCO Supply and Reference Frequency Board that features the LT3042, an ultralow noise and ultrahigh PSRR RF linear regulator. When powered from a 6V to 20V lab or wall wart supply, the DC2429A produces four ultralow noise supplies using seven LT3042s. These supplies include a fixed 3.3V/800mA supply (four LT3042's in parallel), a fixed 5V/200mA supply, a fixed 3.3V/200mA supply that powers an onboard 100MHz ultralow jitter crystal oscillator, and an adjustable voltage (2.5V to 15V), 200mA supply ideal for powering external VCOs. The DC2429 ensures PLL/VCO evaluation meets data sheet performance.

Resources

DC2429A - Schematic
61.00K

DC2429A - Demo Manual
382.00K

DC2429A - Design Files
1.00M

LT3042EDD Demo Board | Ultralow Noise, Ultrahigh PSRR RF LDO, 3.8V ≤ VIN ≤ 20V, VOUT = 3.3V @ 200mA

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Product Details

DC2246B is a linear regulator demonstration circuit featuring the LT3042EDD, which is a 200mA, ultralow noise, and ultrahigh power supply rejection ratio (PSRR) RF low dropout (LDO) regulator with programmable current limit.

DC2246B operates over an input voltage range of 3.8V to 20V and is configured for 3.3V at its output. It features ultralow output voltage noise (0.8µV_RMS from 10Hz to 100kHz) and very high PSRR (79dB at 1MHz).