Texas Instruments LMZ12010 Bedienungsanleitung

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LMZ12010 10-A SIMPLE SWITCHER

®

Power Module With 20-V Maximum Input Voltage

1 Features

•Integrated shielded inductor

•Simple PCB layout

•Fixed switching frequency (350 kHz)

•Flexible start-up sequencing using external soft

start, tracking, and precision enable

•Protection against inrush currents and faults such

as input UVLO and output short circuit

•Junction temperature range: –40°C to 125°C

•Single exposed pad and standard pinout for easy

mounting and manufacturing

•Fully enabled for WEBENCH

®

power designer

•Pin compatible with LMZ22010, LMZ22008,

LMZ22006, LMZ12008, LMZ12006, LMZ23610,

LMZ23608, LMZ23606, LMZ13610, LMZ13608,

and LMZ13606

•Electrical specifications

–50-W maximum total output power

–Up to 10-A output current

–Input voltage range: 6 V to 20 V

–Output voltage range: 0.8 V to 6 V

–Efficiency up to 92%

•Performance benefits

–High efficiency reduces system heat generation

–Low radiated emissions (EMI) tested to

EN55022

1

–Only seven external components

–Low output voltage ripple

–No external heat sink required

2 Applications

•Point-of-load conversions from 12-V input rail

•Time-critical projects

•Space-constrained and high thermal requirement

applications

•Negative output voltage applications

(See AN-2027 SNVA425)

3 Description

The LMZ12010 SIMPLE SWITCHER

®

power module

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

of driving up to 10-A load. The LMZ12010 is

available in an innovative package that enhances

thermal performance and allows for hand or machine

soldering.

The LMZ12010 device can accept an input voltage rail

between 6 V and 20 V and deliver an adjustable and

highly accurate output voltage as low as 0.8 V. The

LMZ12010 only requires two external resistors and

external capacitors to complete the power solution.

The LMZ12010 is a reliable and robust design with

the following protection features: thermal shutdown,

programmable input undervoltage lockout, output

overvoltage protection, short circuit protection, output

current limit, and the device allows start-up into a

prebiased output.

Device Information

PART NUMBER

(2)

PACKAGE

(1)

BODY SIZE (NOM)

LMZ12010NDY (11)15.00 mm × 15.00 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

3 x 10 PF

R

FBT

C

FF

4.7 nF (OPT)

See Table

C

SS

0.47 PF

(OPT)

R

FBB

See Table

C

OUT

2 x 330 PF

LMZ12010

VOUT

SS

FB

VIN

EN

PGND

V

OUT

AGND

Enable

Simplified Application Schematic

012345678910

40

50

60

70

80

90

100

EFFICIENCY (%)

OUTPUT CURRENT (A)

6 Vin

10 Vin

12 Vin

16 Vin

20 Vin

Efficiency 3.3-V Output at 25°C

1

EN 55022:2006, +A1:2007, FCC Part 15 Subpart B, tested on Evaluation Board with EMI configuration.

LMZ12010

SNVS667I – FEBRUARY 2010 – REVISED MARCH 2022

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