LM2647 - Dual Synchronous Buck Regulator Controller

This page provides the datasheet information for the LM2647, a member of the LM2 Dual Synchronous Buck Regulator Controller family.

Product Overview

National Semiconductor

📥 Download Datasheet

Datasheet Details

Part number	LM2647
Manufacturer	National Semiconductor
File Size	763.45 KB
Description	Dual Synchronous Buck Regulator Controller
Datasheet	LM2647 Datasheet
Additional preview pages of the LM2647 datasheet.

LM2647 Product details

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 computers.

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

LM2647 - Dual Synchronous Buck Regulator Controller (Texas Instruments)
LM2640 - Dual Adjustable Step-Down Switching Power Supply Controller (Texas Instruments)
LM26400Y - 500-kHz Wide Input Range Buck Regulator (Texas Instruments)
LM2641 - Dual Adjustable Step-Down Switching Power Supply Controller (Texas Instruments)
LM2642 - Two-Phase Synchronous Step-Down Switching Controller (Texas Instruments)
LM26420 - High-Efficiency Synchronous DC/DC Converter (Texas Instruments)
LM26420 - High Frequency 2.0A Load - Step-Down DC-DC Regulator (National Semiconductor Corporation)
LM26420-Q1 - High-Efficiency Synchronous DC/DC Converter (Texas Instruments)
LM26480 - 1.5-A Buck Regulators and Dual 300-mA LDO (Texas Instruments)
LM26480-Q1 - 1.5-A Buck Regulators and Dual 300-mA LDO (Texas Instruments)

Other Datasheets by National Semiconductor

LM2640 - Dual Adjustable Step-Down Switching Power-Supply Controller
LM26400Y - 500kHz Wide Input Range Buck Regulator
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

Published: Mar 22, 2005 |