Texas Instruments LMZ22005 Handleiding

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LMZ22005 5A, SIMPLE SWITCHER

®

Power Module With 20V Maximum Input Voltage

1 Features

•Integrated shielded inductor

•Simple PCB Layout

•Frequency synchronization input (650kHz to

950kHz)

•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 for easy mounting and

manufacturing

•Fast transient response for powering FPGAs and

ASICs

•Pin compatible with LMZ23605, LMZ23603,

LMZ22003

•Electrical specifications

–30W maximum total output power

–Up to 5A output current

–Input voltage range 6V to 20V

–Output voltage range 0.8V to 6V

–Efficiency up to 92%

•Performance benefits

–High efficiency reduces system heat generation

–Tested to EN55022 Class B

(1)

–Low component count, only five external

components

–Low output voltage ripple

–Uses PCB as heat sink, no airflow required

1

•Create a custom design using the LMZ22005 with

the WEBENCH

®

Power Designer

2 Applications

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

•Time-critical projects

•Space constrained, high thermal requirement

applications

•Negative output voltage applications (see

SNVA425)

3 Description

The LMZ22005 SIMPLE SWITCHER

®

power

converter module is an easy-to-use, step-down,

DC-DC design capable of driving up to 5A load. The

LMZ22005 is available in a remarkable package that

enhances thermal performance and allows for hand or

machine soldering.

The LMZ22005 can accept an input voltage rail

between 6V and 20V and can deliver an adjustable

and highly accurate output voltage as low as

0.8V. The LMZ22005 only requires two external

resistors and three external capacitors to complete

the power design. The LMZ22005 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 the device allows

start-up into a prebiased output. The sync input allows

synchronization over the 650 to 950kHz switching

frequency range.

Package Information

PART

NUMBER

(3)

PACKAGE

(1)

PACKAGE SIZE

(2)

LMZ22005NDW (TO-PMOD, 7)10.16mm × 13.77mm

(1)For more information, see Section 10.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

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

more details.

V

IN

C

IN

22 PF

Enable

R

FBT

See Table

C

SS

0.47 PF

R

FBB

See Table

Co

220 PF

LMZ22005

VOUT

SS/TRK

SYNC

FB

VIN

EN

PGND

V

OUT

@ 5A

AGND

Simplified Application Schematic

012345

40

50

60

70

80

90

100

EFFICIENCY (%)

OUTPUT CURRENT (A)

9 VIn

12 Vin

20 Vin

Efficiency 5V Output at 25°C Ambient

1

EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007. See AN-2125 LMZ23605/03, LMZ22005/03 Demonstration Board user's

guide and layout for information on device under test. Vin = 12V, Vo = 3.3V, Io = 5A

LMZ22005

SNVS686L – MARCH 2011 – REVISED JUNE 2025

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.

Product specificaties