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Space & Harsh Environment Military Plastic (MP)

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LTC3612 - 3A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter

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LTC3412A - 3A, 4MHz, Monolithic Synchronous Step-Down Regulator

Features

  • High Efficiency: Up to 95%
  • 3A Output Current
  • Low Quiescent Current: 64μA
  • Low RDS(ON) Internal Switch: 77mΩ
  • 2.25V to 5.5V Input Voltage Range
  • Programmable Frequency: 300kHz to 4MHz
  • ±2% Output Voltage Accuracy
  • 0.8V Reference Allows Low Output Voltage
  • Selectable Forced Continuous/Burst Mode® Operation with Adjustable Burst Clamp
  • Synchronizable Switching Frequency
  • Low Dropout Operation: 100% Duty Cycle
  • Power Good Output Voltage Monitor
  • Overtemperature Protected
  • Available in 16-Lead Exposed Pad TSSOP and QFN Packages

Typical Application

LTC3412A Typical Application
LTC3412A Typical Application

Description

The LTC3412A is a high efficiency monolithic synchronous, step-down DC/DC converter utilizing a constant frequency, current mode architecture. It operates from an input voltage range of 2.25V to 5.5V and provides a regulated output voltage from 0.8V to 5V while delivering up to 3A of output current. The internal synchronous power switch with 77mΩ on-resistance increases efficiency and eliminates the need for an external Schottky diode. Switching frequency is set by an external resistor or can be synchronized to an external clock. 100% duty cycle provides low dropout operation extending battery life in portable systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

The LTC3412A can be configured for either Burst Mode operation or forced continuous operation. Forced continuous operation reduces noise and RF interference while Burst Mode operation provides high efficiency by reducing gate charge losses at light loads. In Burst Mode operation, external control of the burst clamp level allows the output voltage ripple to be adjusted according to the application requirements.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

TSSOP-16, QFN-16

LTC3412A Package Drawing
LTC3412A Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3412AEFE TSSOP 16 E $4.93 $3.45 View
LTC3412AEFE#PBF TSSOP 16 E $4.93 $3.45 View
LTC3412AEFE#TR TSSOP 16 E $3.51 View
LTC3412AEFE#TRPBF TSSOP 16 E $3.51 View
LTC3412AEUF QFN 16 E $4.93 $3.45 View
LTC3412AEUF#PBF QFN 16 E $4.93 $3.45 View
LTC3412AEUF#TR QFN 16 E $3.51 View
LTC3412AEUF#TRPBF QFN 16 E $3.51 View
LTC3412AIFE#PBF TSSOP 16 I $6.74 $4.72 View
LTC3412AIFE#TRPBF TSSOP 16 I $4.78 View
LTC3412AIUF QFN 16 I $6.74 $4.72 View
LTC3412AIUF#PBF QFN 16 I $6.74 $4.72 View
LTC3412AIUF#TR QFN 16 I $4.78 View
LTC3412AIUF#TRPBF QFN 16 I $4.78 View
LTC3412AMPFE TSSOP 16 MP $9.22 $6.45 View
LTC3412AMPFE#PBF TSSOP 16 MP $9.22 $6.46 View
LTC3412AMPFE#TR TSSOP 16 MP $6.51 View
LTC3412AMPFE#TRPBF TSSOP 16 MP $6.51 View
LTC3412EFE TSSOP 16 E $5.64 $3.95 View
LTC3412EFE#PBF TSSOP 16 E $5.64 $3.95 View
LTC3412EFE#TR TSSOP 16 E $4.01 View
LTC3412EFE#TRPBF TSSOP 16 E $4.01 View
LTC3412EUF QFN 16 E $5.64 $3.95 View
LTC3412EUF#PBF QFN 16 E $5.64 $3.95 View
LTC3412EUF#TR QFN 16 E $4.01 View
LTC3412EUF#TRPBF QFN 16 E $4.01 View
LTC3412IFE TSSOP 16 I $6.49 $4.54 View
LTC3412IFE#PBF TSSOP 16 I $6.49 $4.54 View
LTC3412IFE#TRPBF TSSOP 16 I $4.60 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology demo boards are offered free of charge to qualified customers. Contact your local sales office or distributor to request a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC652A LTC3412AEFE Demo Board $100.00
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Click here to view our complete list of demo boards

Applications

  • Point-of-Load Regulation
  • Notebook Computers
  • Portable Instruments
  • Distributed Power Systems

Simulate

LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. To download LTspice IV and other FREE simulation tools, please visit our Design Simulation page.

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice IV
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice IV does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As". After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Related models available in LTspice IV
LTC3412
LTC3412A

Technical Support