High-Efficiency 1.5A LM2655MTCX-ADJ Synchronous Buck Converter 4.5-20V Input 0.6-18V Adjustable Output 95% Efficiency 280kHz Power Good and Enable

High-Efficiency 1.5A LM2655MTCX-ADJ Synchronous Buck Converter 4.5-20V Input 0.6-18V Adjustable Output 95% Efficiency 280kHz Power Good andamp; Enable

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Features

Ultra-high efficiency up to 96%

4V to 14V input voltage range

Internal high-side MOSFET with low Rps(oN)= 0.033andOmega;

300 kHz fixed frequency internal oscillator

Low-side drive for synchronous operation

Guaranteed less than 12 uA shutdown current

Patented current sensing for current mode control

Programmable soft-start

Input undervoltage lockout

Output overvoltage shutdown protection

Output undervoltage shutdown protection0

Thermal Shutdown

16-pin TSSOP package

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Applications

Hard disk drives

Internet appliances

TFT monitors

Computer peripherals

Battery powered devices

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Description

The LM2655 is a current-mode controlled PWM step-downandnbsp;switching regulator. it has the unique ability to operate inandnbsp;synchronous or asynchronous mode. This gives the designer flexibility to choose between the high efficiency ofandnbsp;synchronous operation, or the low solution cost of asynchronous operation. Along with flexibility, the LM2655 offers highandnbsp;power density with the small footprint of a TSSOP-16 package.

High efficiency (andgt;90%)is obtained through the use of anandnbsp;internal low ON-resistance (33mandOmega;) MOSFET, and an external N-Channel MOSFET. This feature, together with its lowandnbsp;quiescent current, makes the LM2655 an ideal fit in portableandnbsp;applications.

Integrated in the LM2655 are all the power, control, and driveandnbsp;functions for asynchronous operation. In addition, a low-sideandnbsp;driver output allows easy synchronous operation. The lCandnbsp;uses patented current sensing circuitry that eliminates theandnbsp;external current sensing resistor required by other currentmode DC-DC converters.A programmable soft-start featureandnbsp;limits start up current surges and provides a means of sequencing multiple power supplies.

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INFORMATION

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Drawing

Our advantage :phones, PDAand#39;s, notebook comput.ers

• High quality products --- our offers are 100% new and original, ROHS
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• Fast delivery --- we will ship the goods within 1-3 working days after the payment confirmed.

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