LT8342

RECOMMENDED FOR NEW DESIGNS

40V, 9A, Low IQ Synchronous Step-Up Silent Switcher with Input Disconnect and PassThru

Data Sheet (Rev. 0) Product Selection Table

Part Models: 3
1ku List Price: Starting From $4.18

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Part Details

Silent Switcher™ Architecture

Ultralow EMI Emissions
Optional Spread Spectrum Frequency Modulation

Integrated 40V, 9A Power Switches
Output Short Protection/Inrush Current Reduction
Wide Input Voltage Range: 2.8V to 40V
Output Voltage Programmable up to 36V

Optional 2 Pins select 21 output voltages

Low V_IN Pin Quiescent Current:

350nA In Shutdown; 9μA In Burst Mode; 12μA In PassThru™ (V_IN ≥ V_OUT)

100% Duty Cycle Capability
Adjustable and Synchronizable: 300kHz to 3MHz
Pulse-Skipping or Burst Mode at Light Load
Output Soft-Start and Power Good Monitoring
Small 24-Lead (4mm × 4mm) LQFN Package

Part Models: 3
1ku List Price: Starting From $4.18

Documentation

Data Sheet 1

LT8342: 40V, 9A, Low IQ Synchronous Step-Up Silent Switcher with Input Disconnect and PassThru Data Sheet (Rev.0) 07/19/2024

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
LT8342RV#PBF	24-Lead (4mm × 4mm × 0.95mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8342RV#TRMPBF	24-Lead (4mm × 4mm × 0.95mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT8342RV#TRPBF	24-Lead (4mm × 4mm × 0.95mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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

Evaluation Kits

Evaluates: LT8342 in 24V Output Voltage Application

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Features and Benefits

Input Voltage Range: 6V to 20V
24V Output Voltage
Up to 3A Load Current at 12V Input
2MHz Switching Frequency
High 95.1% Efficiency (V_IN = 12V, I_OUT = 2.5A)
Enable/UVLO Input, Resistor-Programmable UVLOThreshold
Selectable Mode of operation
Output Short Protection/Inrush Current Reduction

Input Disconnect
PassThru Operation
External Frequency Synchronization
External Compensation
Overtemperature Protection
Proven Printed Circuit Board (PCB) Layout
Fully Assembled and Tested

Product Details

The EVAL-LT8342-AZ evaluation board provides a proven design to evaluate the LT8342, a 40V, 9A, Low IQ Synchronous Step-Up Silent Switcher^™ with Input Disconnect and PassThru^™. The application circuit is configured to demonstrate optimum performance and component size. Using the board layout example, optimized for Electromagnetic Interference (EMI), and thermal performance, will help ensure the designer sees similar performance in their system.

The evaluation board is configured to run at 2MHz with a 24V output voltage from an input voltage range of 6V to 20V and deliver up to 3A load current when V_IN is 12V.

The evaluation board features an adjustable input undervoltage-lockout, external clock synchronization, thermal shutdown, selectable mode of operation, input disconnect, and PassThru.

The LT8342 converter data sheet provides a complete description of the part that should be read in conjunction with this user guide before operating the evaluation board.

Resources

EVAL-LT8342-AZ User Guide: Evaluates: LT8342 in 24V Output Voltage Application (Rev.1)
1.29 M

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