LV2843DDCR中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? New product available:

– LMR43610 3 to 36-V, 1-A, 200-kHz to 2.2-MHz

synchronous converter

? For faster time to market:

– TLVM23615 3 to 36-V, 1.5-A, 200-kHz to 2.2-

MHz power module

? Input range 4 V to 40 V with 45-V transients

? 0.7-MHz switching frequency

? Ultra-high efficiency for light load with Eco-mode

? Low dropout operation

? Output current up to 1 A

? Precision enable input

? Overcurrent protection

? Internal compensation

? Internal soft start

? Small overall solution size (TSOT-6L package)

2 Applications

? Power meter

? Collector

? Concentrator

? Industrial distributed power applications

3 Description

The LV284 is a PWM DC/DC buck (step-down)

regulator. With a wide input range from 4 V to

40 V, the device is designed for a wide range of

applications from industrial to automotive. An ultralow,

1-μA shutdown current prolongs battery life.

Operating frequency is fixed at 0.7 MHz allowing the

use of small external components while still being

able to have low output ripple voltage. Soft-start and

compensation circuits are implemented internally, and

these allow the device to be used with minimum

external components.

The LV284 is optimized for up to 1-A load current. The

device has a 0.765-V nominal feedback voltage.

The device has built-in protection features such as

pulse-by-pulse current limit, thermal sensing and

shutdown due to excessive power dissipation. The

LV284 is available in a low profile TSOT-6L package

(2.9 mm × 1.6 mm × 0.85 mm).