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LTC3411  1.25A 4MHz Synchronous Step-Down DC/DC Converter
Item # 1483
Package type: MSOP 10-Lead
Description: The LTC®3411  is a constant  frequency, synchronous, step- down DC/DC converter. Intended for medium power applications, it operates from a 2.63V to 5.5V input voltage range  and has a user confi gurable  operating  frequency up to 4MHz, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. The output voltage is adjustable from 0.8V to 5V. Internal sychronous 0.11Ω power switches with 1.6A peak current ratings provide high efficiency.

The LTC3411’s current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors.

The LTC3411 can be confi gured for automatic power saving Burst Mode operation to reduce gate charge losses when the load current drops below the level required for continuous operation. For reduced noise and RF interference, the SYNC/MODE pin can be confi gured to skip pulses or provide forced continuous operation. To further maximize battery life, the P-channel MOSFET is turned on continuously in dropout (100% duty cycle) with a low quiescent current of 60μA. In shutdown, the device draws <1μA.

• 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 Line  and 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® Operationn
• Synchronizable to External Clock

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

Temperature Range: –40°C to 85°C

Package Type: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
(Please note that this item package is so tiny ).
Marking Code: LTQT
Documents & Files:

45.00  EGP
per Unit

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