LM2651 Datasheet PDF (1.5A High Efficiency Synchronous Switching Regulator)

LM2651 - 1.5A High Efficiency Synchronous Switching Regulator

This page provides the datasheet information for the LM2651, a member of the LM2 1.5A High Efficiency Synchronous Switching Regulator family.

Description

The LM2651 switching regulator provides high efficiency power conversion over a 100:1 load range (1.5A to 15mA).

This feature makes the LM2651 an ideal fit in battery-powered applications that demand long battery life in both run and standby modes.

Features

include input undervoltage lockout, current limiting, and thermal shutdown. Features n n n n n n n n n n n n Ultra high efficiency up to 97% High efficiency over a 1.5A to milliamperes load range 4V to 14V input voltage range 1.8V, 2.5V, 3.3V, or ADJ output voltage Internal MOSFET switch with low RDS(on) of 75mΩ 300kHz fixed frequency internal oscillator 7µA shutdown current Patented current sensing for current mode control Input undervoltage lockout Adjustable soft-start Current limit and ther.

Datasheet Details

Part number	LM2651
Manufacturer	National Semiconductor
File Size	222.58 KB
Description	1.5A High Efficiency Synchronous Switching Regulator
Datasheet	LM2651 Datasheet
Additional preview pages of the LM2651 datasheet.

📁 Similar Datasheet

LM2651 - 1.5A High-Efficiency Synchronous Switching Regulator (Texas Instruments)

LM2650 - Synchronous Step-Down DC/DC Converter (Texas Instruments)

LM2653 - 1.5A High Efficiency Synchronous Switching Regulator (Texas Instruments)

LM2657 - Dual Synchronous Buck Regulator Controller (Texas Instruments)

LM26 - Factory-Preset Thermostat (Texas Instruments)

LM26001 - 1.5-A Switching Regulator (Texas Instruments)

LM26001-Q1 - 1.5-A Switching Regulator (Texas Instruments)

LM26001B - 1.5A Switching Regulator (Texas Instruments)

LM26003 - 3-A Switching Regulator (Texas Instruments)

LM26003-Q1 - 3-A Switching Regulator (Texas Instruments)

Full PDF Text Transcription

Click to expand full text

LM2651 1.5A High Efficiency Synchronous Switching Regulator February 2000 LM2651 1.5A High Efficiency Synchronous Switching Regulator General Description The LM2651 switching regulator provides high efficiency power conversion over a 100:1 load range (1.5A to 15mA). This feature makes the LM2651 an ideal fit in battery-powered applications that demand long battery life in both run and standby modes. Synchronous rectification is used to achieve up to 97% efficiency. At light loads, the LM2651 enters a low power hysteretic or “sleep” mode to keep the efficiency high. In many applications, the efficiency still exceeds 80% at 15mA load. A shutdown pin is available to disable the LM2651 and reduce the supply current to less than 10µA.

Published: Mar 22, 2005 |