LV14240DDAR中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? New product available:

– LMR51420 4.5-V to 36-V 2-A synchronous

buck converter

? For faster time to market:

– TLVM13620 3.6-V to 36-V, 2-A synchronous

buck power module

? 4-V to 40-V input range

? 2-A continuous output current

? 100-mΩ high-side MOSFET

? 100-ns minimum on time

? Current mode control

? Adjustable switching frequency from 200 kHz to 2

MHz

? Frequency synchronization to external clock

? Internal compensation for ease of use

? High duty cycle operation supported

? Precision enable input

? 1-μA shutdown current

? External soft start

? Thermal, overvoltage, and short protection

? 8-pin SOIC with PowerPAD? package

2 Applications

? Automotive battery regulation

? Industrial power supplies

? Telecom and datacom systems

? Battery-powered systems

3 Description

The LV14240 is a 40-V, 2-A step-down regulator with

an integrated high-side MOSFET. With a wide input

range from 4 V to 40 V, the device is designed

for various applications from industrial to automotive

for power conditioning from unregulated sources. A

wide adjustable switching frequency range allows

either efficiency or external component size to be

optimized. Internal loop compensation means that

the user is free from the tedious task of loop

compensation design. This feature also minimizes the

external components of the device. A precision enable

input allows simplification of regulator control and

system power sequencing. The device also has builtin

protection features such as cycle-by-cycle current

limit, thermal sensing, and shutdown due to excessive

power dissipation and output overvoltage protection.