VIN

EN

GND

FB

VOUT

LMZ10503EXT

SS

1

2

3

4, EP

5

6, 7

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LMZ10503EXT

SNVS668H – JUNE 2010 – REVISED SEPTEMBER 2015

for Demanding and Rugged Applications

1 Features

2 Applications

1

•

Integrated Shielded Inductor

•

Point-of-Load Conversions From 3.3-V and 5-V

Rails

•

Flexible Start-up Sequencing Using External Soft-

Start, Tracking, and Precision Enable

•

Space-Constrained Applications

•

Protection Against In-Rush Currents and Faults

•

Noise-Sensitive Applications (Such as

Such as Input UVLO and Output Short-Circuit

Transceiver, Medical)

•

Single Exposed Pad and Standard Pinout for Easy

3 Description

Mounting and Manufacturing

•

Pin-to-Pin Compatible With

module is a complete, easy-to-use, DC-DC solution

–

LMZ10504EXT (4-A/20-W Maximum)

capable of driving up to a 3-A load with exceptional

–

LMZ10505EXT (5-A/25-W Maximum)

power conversion efficiency, output voltage accuracy,

line and load regulation. The LMZ10503EXT is

•

Fast Transient Response for Powering FPGAs

available in an innovative package that enhances

and ASICs

thermal performance and allows for hand or machine

•

Electrical Specifications

soldering.

–

15-W Maximum Total Output Power

The LMZ10503EXT can accept an input voltage rail

–

Up to 3-A Output Current

between 2.95 V and 5.5 V, and can deliver an

–

Input Voltage Range 2.95 V to 5.5 V

adjustable and highly accurate output voltage as low

as 0.8 V. 1-MHz fixed-frequency PWM switching

–

Output Voltage Range 0.8 V to 5 V

provides

a

predictable

EMI

characteristic.

Two

–

±1.63% Feedback Voltage Accuracy Over

external compensation components can be adjusted

Temperature

to set the fastest response time, while allowing the

•

Performance Benefits

option to use ceramic or electrolytic output capacitors.

Externally

programmable

soft-start

capacitor

–

Operates at High Ambient Temperatures

facilitates controlled start-up. The LMZ10503EXT is a

–

Low Radiated Emissions (EMI) Tested to

reliable

and

robust

solution

with

the

following

EN55022 Class B Standard

features: lossless cycle-by-cycle peak current limit to

–

Passes 10-V/m Radiated Immunity EMI Tested

protect for over current or short-circuit fault, thermal

shutdown, input undervoltage lockout, and prebiased

to Standard EN61000 4-3

start-up. The LMZ10503EXT is also fully-enabled for

–

Passes Vibration Standard

–

MIL-STD-883 Method 2007.2 Condition A

Device Information(1)(2)

–

JESD22-B103B Condition 1

PART NUMBER

PACKAGE

BODY SIZE (NOM)

–

Passes Drop Standard

LMZ10503EXT

TO-PMOD (7)

9.85 mm × 10.16 mm

–

MIL-STD-883 Method 2002.3 Condition B

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

–

JESD22-B110 Condition B

the end of the data sheet.

NOTE:

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

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

See Figure 21 and layout for information on device under

more details.

test.

Typical Application Circuit

1

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.