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LMR51420_V01中文資料德州儀器數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

LMR51420_V01
廠商型號(hào)

LMR51420_V01

功能描述

LMR51420 SIMPLE SWITCHER? 4.5-V to 36-V, 2-A, Synchronous Buck Converter in a SOT-23 Package

文件大小

2.19767 Mbytes

頁(yè)面數(shù)量

34 頁(yè)

生產(chǎn)廠商 Texas Instruments
企業(yè)簡(jiǎn)稱

TI德州儀器

中文名稱

美國(guó)德州儀器公司官網(wǎng)

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更新時(shí)間

2025-7-11 11:13:00

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LMR51420_V01規(guī)格書(shū)詳情

1 Features

? Functional Safety-Capable

– Documentation available to aid functional safety

system design

? Configured for rugged industrial applications

– 4.5-V to 36-V input voltage range

– 2-A continuous output current

– 70-ns minimum switching on time

– 500-kHz and 1.1-MHz fixed switching frequency

options

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

– 98 maximum duty cycle

– Start-up with prebiased output

– Internal short circuit protection with hiccup

mode

– ±1.5 tolerance voltage reference

– Precision enable

? Small solution size and ease of use

– Integrated synchronous rectification

– Internal compensation for ease of use

– SOT-23 package

? Pin-to-pin compatible with the TPS54202 and

TPS54302

? PFM and forced PWM (FPWM) options available

? Create a custom design using the LMR51420 with

the WEBENCH? Power Designer

2 Applications

? Appliances

? Building automation

? Motor drives

? General purpose wide VIN power supplies

3 Description

The LMR51420 is a wide-VIN, easy-to-use SIMPLE

SWITCHER? synchronous buck converter capable of

driving up to 2-A load current. With a wide input range

of 4.5 V to 36 V, the device is suitable for a wide

range of industrial applications for power conditioning

from an unregulated source.

The LMR51420 operates at 500-kHz and 1.1-MHz

switching frequency to support use of relatively small

inductors for an optimized solution size. The device

has a PFM version to realize high efficiency at

light load and 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 allows the device to be

used with minimum 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. The LMR51420 is available in a

6-pin SOT-23 package.

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TI(德州儀器)
24+
SOT236
7350
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TI(德州儀器)
24+
NA/
8735
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TI(德州儀器)
2511
8790
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TI德州儀器
22+
24000
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TI(德州儀器)
24+
32000
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TI(德州儀器)
23+
SOT-23-6
406
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TI/德州儀器
25+
原廠封裝
9999
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TI
24+
N/A
8000
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TI(德州儀器)
23+
15000
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TI/德州儀器
25+
原廠封裝
10280
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