Texas Instruments LMZ14201H Bedienungsanleitung

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LMZ14201H SIMPLE SWITCHER

®

6V to 42V, 1A High Output Voltage Power Module

1 Features

•Integrated shielded inductor

•Simple PCB layout

•Flexible start-up sequencing using external soft-

start and precision enable

•Protection against inrush currents

•Input UVLO and output short circuit protection

•–40°C to 125°C junction temperature range

•Single exposed pad and standard pinout for easy

mounting and manufacturing

•Low output voltage ripple

•Pin-to-pin compatible family:

–LMZ14203H/2H/1H (42 V maximum 3-A, 2-A,

1-A)

–LMZ14203/2/1 (42 V maximum 3-A, 2-A, 1-A)

–LMZ12003/2/1 (20 V maximum 3-A, 2-A, 1-A)

•Fully enabled for WEBENCH

®

power designer

•Electrical specifications

–Up to 1-A output current

–Input voltage range 6 V to 42 V

–Output voltage as low as 5 V

–Efficiency up to 97%

•Performance benefits

–High efficiency reduces system heat generation

–No compensation required

–Low package thermal resistance

–Low radiated EMI (EN 55022 class B tested)

1

2 Applications

•Intermediate bus conversions to 12-V and 24-V rail

•Time-critical projects

•Space constrained and high thermal requirement

applications

•Negative output voltage applications

3 Description

The LMZ14201H SIMPLE SWITCHER

®

power

module is an easy-to-use step-down DC-DC solution

that can drive up to 1-A load with exceptional

power conversion efficiency, line and load regulation,

and output accuracy. The LMZ14201H is available

in an innovative package that enhances thermal

performance and allows for hand or machine

soldering.

The LMZ14201H can accept an input voltage rail

between 6 V and 42 V and deliver an adjustable

and highly accurate output voltage as low as 5

V. The LMZ14201H only requires three external

resistors and four external capacitors to complete the

power solution. The LMZ14201H is a reliable and

robust design with the following protection features:

thermal shutdown, input undervoltage lockout, output

overvoltage protection, short-circuit protection, output

current limit, and allows start-up into a prebiased

output. A single resistor adjusts the switching

frequency up to 1 MHz.

Device Information

PART NUMBER

(2)

PACKAGE

(1)

BODY SIZE (NOM)

LMZ14201HTO-PMOD (7)10.16 mm × 9.85 mm

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

the end of the data sheet.

(2)Peak reflow temperature equals 245°C. See SNAA214 for

more details.

V

IN

C

IN

Enable

R

ON

R

FBT

C

FF

C

SS

R

FBB

C

OUT

LMZ14201H

VOUT

FB

RON

SS

VIN

EN

GND

V

OUT

Simplified Application Schematic

0.00.20.40.60.81.0

70

75

80

85

90

95

100

EFFICIENCY (%)

OUTPUT CURRENT (A)

VIN = 15V

VIN = 24V

VIN = 30V

VIN = 36V

VIN = 42V

Efficiency V

OUT

= 12 V, T

A

= 25°C

1

EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007.

LMZ14201H

SNVS690I – JANUARY 2011 – REVISED AUGUST 2021

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.

Produktspezifikationen