LTC3421

PRODUCTION

3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect

Data Sheet (Rev. A) Product Selection Table

Part Models: 2
1ku List Price: Starting From $4.66

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Part Details

Synchronous Rectification: Up to 96% Efficiency
True Output Disconnect
Inrush Current Limiting
Very Low Quiescent Current: 12µA
Up to 1.5A Continuous Output Current
Fixed Frequency Operation Up to 3MHz
0.5V to 4.5V Input Range
2.4V to 5.25V Adjustable Output Voltage
Guaranteed 1V Start-Up
Programmable Current Limit
Programmable Soft-Start
Synchronizable Oscillator
Manual or Automatic Burst Mode^® Operation
Low-Battery Comparator
<1µA Shutdown Current
1.22V Reference Output Voltage
Small (4mm × 4mm) Thermally Enhanced QFN Package

Part Models: 2
1ku List Price: Starting From $4.66

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
LTC3421EUF#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3421EUF#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products
		PCN21_0269_Form Material_Report Detailed Change Description Qualification Results Summary
LTC3421EUF#PBF	PRODUCTION
LTC3421EUF#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Silicon Oscillators 2
LTC6908		Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation
LTC6909	PRODUCTION	1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation

Tools & Simulations

LTspice 1

LTC3421 - Step-Up (Boost) Regulators

Models for the following parts are available in LTspice:

LTC3421

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

LTC3421EUF | VIN = 1.8V to 3.2V, VOUT = 3.3V @ 1A

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Product Details

Demonstration Circuit 565 is a constant-frequency synchronous boost converter using the LTC3421. Guaranteed to start-up at 1V input voltage, this converter provides up to 95% efficiency. For 1.8V minimum input voltage, this converter can provide up to 1A load current. This converter has true output disconnect by eliminating body diode conduction of the internal PMOS rectifier. The output voltage is set at 3.3V. A different output voltage in the range of 2.4V to 5.25V can be obtained by changing one of the feedback resistors.

Resources

DC565A - Schematic
155.00K

DC565A - Demo Manual
191.00K

DC565A - Design File
1.00M

Latest Discussions

3 Years Ago

Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 1

Spec Notice 1