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LM2655 - 2.5A High Efficiency Synchronous Switching Regulator

Description

The LM2655 is a current-mode controlled PWM step-down switching regulator.

It has the unique ability to operate in synchronous or asynchronous mode.

This gives the designer flexibility to choose between the high efficiency of synchronous operation, or the low solution cost of asynchronous operation.

Features

  • n Ultra-high efficiency up to 96% n 4V to 14V input voltage range n Internal high-side MOSFET with low RDS(ON) = 0.033Ω n 300 kHz fixed frequency internal oscillator n Low-side drive for synchronous operation n Guaranteed less than 12 µA shutdown current n Patented current sensing for current mode control n Programmable soft-start n Input undervoltage lockout n Output overvoltage shutdown protection n Output undervoltage shutdown protection n Thermal Shutdown n 16-pin TSSOP package.

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Datasheet preview – LM2655

Datasheet Details

Part number LM2655
Manufacturer National Semiconductor
File Size 758.48 KB
Description 2.5A High Efficiency Synchronous Switching Regulator
Datasheet download datasheet LM2655 Datasheet
Additional preview pages of the LM2655 datasheet.

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LM2655 2.5A High Efficiency Synchronous Switching Regulator April 2005 LM2655 2.5A High Efficiency Synchronous Switching Regulator General Description The LM2655 is a current-mode controlled PWM step-down switching regulator. It has the unique ability to operate in synchronous or asynchronous mode. This gives the designer flexibility to choose between the high efficiency of synchronous operation, or the low solution cost of asynchronous operation. Along with flexibility, the LM2655 offers high power density with the small footprint of a TSSOP-16 package. High efficiency (>90%) is obtained through the use of an internal low ON-resistance (33mΩ) MOSFET, and an external N-Channel MOSFET.
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