Texas Instruments LV14240 Handleiding

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LV14240 SIMPLE SWITCHER

®

Power Converter 40V, 2A, 2MHz Step-Down Converter

1 Features

•New product available:

–LMR51420 4.5V to 36V 2A synchronous buck

converter

•For faster time to market:

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

power module

•4V to 40V input range

•2A continuous output current

•100mΩ high-side MOSFET

•100ns minimum on time

•Current mode control

•Adjustable switching frequency from 200kHz to

2MHz

•Frequency synchronization to external clock

•Internal compensation for ease of use

•High duty cycle operation supported

•Precision enable input

•1µA 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

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3 Description

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

an integrated high-side MOSFET. With a wide input

range from 4V to 40V, 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 built-

in protection features such as cycle-by-cycle current

limit, thermal sensing, and shutdown due to excessive

power dissipation and output overvoltage protection.

Package Information

PART NUMBERPACKAGE

(1)

PACKAGE SIZE

(2)

LV14240DDA (HSOIC, 8)4.90mm × 6.00mm

(1)For more information, see Section 10.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

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BOOT

SW

L

C

BOOT

FB

VIN

V

IN

up to 40 V

GND

C

OUT

EN

C

IN

SS

RT/SYNC

V

OUT

C

SS

D

R

FBT

R

FBB

R

T

Simplified Schematic

I

OUT

(A)

Efficiency (%)

00.20.40.60.811.21.41.61.822.2

60

70

80

90

100

D001

V

IN

= 12 V, g

SW

= 1 MHz

V

OUT

= 5 V

V

OUT

= 3.3 V

Efficiency vs Output Current

LV14240

SNVSAD6B – JUNE 2015 – REVISED DECEMBER 2024

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Product specificaties