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LM2647 Datasheet Dual Synchronous Buck Regulator Controller

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: Dual Synchronous Buck Regulator Controller June 2003 LM2647 Dual Synchronous Buck Regulator.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The LM2647 is an adjustable 200-500kHz dual channel voltage-mode controlled high-speed synchronous buck regulator controller ideally suited for battery powered applications such as laptop and notebook puters.

The LM2647 requires only N-channel FETs for both the upper and lower positions of each synchronous stage.

It

Key Features

  • line feedforward to improve the response to input transients. At very light loads, the user can choose between the highefficiency Pulse-skip mode or the constant frequency Forced-PWM mode. Lossless current limiting without the use of external sense resistors is made possible by sensing the voltage drop across the bottom FET. A unique adaptive duty cycle clamping technique is incorporated to significantly reduce peak currents under abnormal load conditions. The two independently programmable outp.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Texas Instruments Logo LM2647 Dual Synchronous Buck Regulator Controller Texas Instruments

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
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LM2641 Dual Adjustable Step-Down Switching Power Supply Controller
LM2642 Two-Phase Synchronous Step-Down Switching Controller
LM2645 Advanced Two-Phase Switching Controller
LM2648 Synchronous Step-Down 3-Channel Switching Regulator Controller
LM26 Factory Preset Thermostat
LM260 Voltage Comparators
LM26001 Switching Regulator
LM26001B 1.5A Switching Regulator

LM2647 Distributor