Power Management Switching Regulator Step-Down (Buck) Regulators Internal Power Switch Buck

For New Designs

LTC3614 - 4A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter

LTC3416 - 4A, 4MHz, Monolithic Synchronous Step-Down Regulator with Tracking

Features

  • High Efficiency: Up to 95%
  • 4A Output Current
  • Low RDS(ON) Internal Switch: 67milli-Ohm
  • Tracking Input to Provide Easy Supply Sequencing
  • Programmable Frequency: 300kHz to 4MHz
  • 2.25V to 5.5V Input Voltage Range
  • ±2% Output Voltage Accuracy
  • 0.8V Reference Allows Low Output Voltage
  • Low Dropout Operation: 100% Duty Cycle
  • Power Good Output Voltage Monitor
  • Overtemperature Protected
  • Available in a 20-Lead Thermally Enhanced TSSOP Package

Typical Application

LTC3416 Typical Application
LTC3416 Typical Application

Description

The LTC3416 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 4A of output current. The internal synchronous power switch with 67m Ohm of on-resistance increases efficiency and eliminates the need for an external Schottky diode. Switching frequency is set by an external resistor. 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 LTC3416 operates in forced continuous operation and provides tracking of another power supply rail. Forced continuous operation reduces noise and RF interference and provides excellent transient response. Fault protection is provided by an overcurrent comparator, and adjustable compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
Drawing		 RoHS
LTC3416EFE#PBF TSSOP-20 FE E 05-08-1663 (CA) Yes
LTC3416EFE#TRPBF TSSOP-20 FE E 05-08-1663 (CA) Yes


LTC3416 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LTC3416EFE#PBF TSSOP-20 E $6.60 $4.62 Yes
LTC3416EFE#TRPBF TSSOP-20 E $4.68 Yes
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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 offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about 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
DC667A LTC3416EFE Demo Board | 2.25V ≤ VIN ≤ 5.5V, Vout = 1.8V/2.5V/3.3V/Adj @ 4A $150.00
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Click here to view our complete list of demo boards

Applications

  • Portable Instruments
  • Notebook Computers
  • Distributed Power Systems
  • Battery-Powered Equipment
  • POL Board Power

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LTC3416

LTpowerCAD

The LTpowerCAD design tool is a complete power supply design tool program that can significantly ease the tasks of power supply design. It guides users to a solution, selects power stage components, provides detailed power efficiency, shows quick loop bode plot stability and load transient analysis, and can export a final design to LTspice for simulation. Click here to download LTpowerCAD

To open the project file for this circuit:

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

Design tools for the following parts are available in LTpowerCAD:
LTC3416

Technical Support