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LTC3411

Features: Small 10-Lead MSOP or DFN Package Uses Tiny Capacitors and Inductor High Frequency Operation: Up to 4MHz High Switch Current: 1.6A Low RDS(ON) Internal Switches: 0.110Ω High Efficiency: Up to 95% Stable with Ceramic Capacitors Current Mode Operation for Excellent Lineand Load Tran...

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SeekIC No. : 004402222 Detail

LTC3411: Features: Small 10-Lead MSOP or DFN Package Uses Tiny Capacitors and Inductor High Frequency Operation: Up to 4MHz High Switch Current: 1.6A Low RDS(ON) Internal Switches: 0.110Ω High Efficie...

LTC3411 Data Sheet

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Part Number:
LTC3411
Supply Ability:
5000

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  • Processing time
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Product Details

Description



Features:

Small 10-Lead MSOP or DFN Package
Uses Tiny Capacitors and Inductor
High Frequency Operation: Up to 4MHz
High Switch Current: 1.6A
Low RDS(ON) Internal Switches: 0.110Ω
High Efficiency: Up to 95%
Stable with Ceramic Capacitors
Current Mode Operation for Excellent Lineand Load Transient Response
Short-Circuit Protected
Low Dropout Operation: 100% Duty Cycle
Low Shutdown Current: IQ 1µA
Low Quiescent Current: 60µA
Output Voltages from 0.8V to 5V
Selectable Burst Mode®Operation
Sychronizable to External Clock


Application

Notebook Computers
Digital Cameras
Cellular Phones
Handheld Instruments
Board Mounted Power Supplies


Pinout

Connection Diagram


Specifications

PVIN, SVIN
Voltages ......................................................0.3V to 6V
VFB, ITH, SHDN/RT Voltages .......... 0.3V to (VIN + 0.3V)
SYNC/MODE Voltage ..................... 0.3V to (VIN + 0.3V)
SW Voltage ...................................0.3V to (VIN + 0.3V)
PGOOD Voltage ............................................0.3V to 6V
Operating Ambient Temperature Range
(Note 2) .............................................. 40°C to 85°C
Junction Temperature (Notes 5, 8) ..................... 125°C
Storage Temperature Range
DD Package ...................................... 65°C to 125°C
MS Package ....................................  65°C to 150°C
Lead Temperature (Soldering, 10 sec) ............... 300°C


Description

The LTC®3411 is a constant frequency, synchronous,step- down DC/DC converter. Intended for medium powerapplications, it operates from a 2.63V to 5.5V input voltagerange and has a user configurable operating frequency upto 4MHz, allowing the use of tiny, low cost capacitors andinductors 2mm or less in height. The output voltage isadjustable from 0.8V to 5V. Internal sychronous 0.11Ωpower switches with 1.6A peak current ratings providehigh efficiency. The LTC3411's current mode architectureand external compensation allow the transient responseto be optimized over a wide range of loads and outputcapacitors.

The LTC3411 can be configured for automatic powersaving Burst Mode operation to reduce gate charge losseswhen the load current drops below the level required forcontinuous operation. For reduced noise and RF interfer-ence, the SYNC/MODE pin can be configured to skippulses or provide forced continuous operation.

To further maximize battery life, the P-channel MOSFET isturned on continuously in dropout (100% duty cycle) witha low quiescent current of 60µA. In shutdown, the devicedraws <1µA.




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