Datasheet > LMR54410DBVR

LMR54410DBVR

更新时间： 2024-01-23 15:44:19

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
27页	1625K
描述
LMR544xx SIMPLE SWITCHERÂ® 4-V to 36-V, 0.6-A/1-A Buck Converter in a SOT-23 Package

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LMR54410DBVR 数据手册

LMR54410, LMR54406

SLUSEG8 – OCTOBER 2021

LMR544xx SIMPLE SWITCHER® 4-V to 36-V, 0.6-A/1-A Buck Converter

in a SOT-23 Package

1 Features

3 Description

•

Functional Safety-Capable

The LMR544xx is

wide-V_IN, easy-to-use

synchronous buck converter capable of driving up to

1-A and 0.6-A load current. With a wide input range of

4 V to 36 V, the device is suitable for a wide range of

industrial applications for power conditioning from an

unregulated source.

– Documentation available to aid functional safety

system design

•

Configured for rugged industrial applications

– 4-V to 36-V input voltage range

– 0.6-A/1-A continuous output current

– 60-ns minimum switching on time

– 1.1-MHz fixed switching frequency

– –40°C to 150°C junction temperature range

– 98% maximum duty cycle

– Monotonic start-up with pre-biased output

– Short circuit protection with hiccup mode

– Precision enable

– ±1% tolerance voltage reference

Small solution size and ease of use

– Integrated synchronous rectification

– Internal compensation for ease of use

– SOT-23 package

The LMR544xx operates at 1.1-MHz switching

frequency to support use of relatively small inductors

for an optimized solution size. It has a PFM version

to realize high efficiency at light load and a FPWM

version to achieve constant frequency and small

output voltage ripple over the full load range. Soft-

start and compensation circuits are implemented

internally, which allow the device to be used with

minimal external components.

•

The device has built-in protection features, such as

cycle-by-cycle current limit, hiccup mode short-circuit

protection, and thermal shutdown in case of excessive

power dissipation.

•

Pin-to-pin compatible with the LMR14010A,

LMR50410, and TPS560430

Various options in pin-to-pin compatible package

Device Information

PACKAGE⁽¹⁾

BODY SIZE (NOM)

– PFM and forced PWM (FPWM) options

PART NUMBER

LMR54410

2 Applications

SOT-23

2.90 mm × 1.60 mm

LMR54406

•

Major appliances

PLC, DCS, and PAC

Smart meters

General purpose wide V_INpower supplies

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

V_INup to 36 V

VIN

C_IN

C_BOOT

V_OUT

R_FBT

GND

C_OUT

R_FBB

Simplified Schematic

Efficiency Versus Output Current; V_OUT= 5 V, 1100

kHz

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. ADVANCE INFORMATION for preproduction products; subject to change

without notice.

12 3 4 5 6 7...27

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