LMZ31707

PWRGD

SENSE+

VOUT

PVIN

VIN

INH/UVLO

RT/CLK

VADJ

SS/TR

STSEL

AGND PGND

SYNC_OUT

ISHARE

LMZ31707

www.ti.com

SLVSBV7A – JUNE 2013 – REVISED AUGUST 2013

in QFN Package

Check for Samples: LMZ31707

1

FEATURES

DESCRIPTION

The LMZ31707 SIMPLE SWITCHER® power module

23

•

Complete Integrated Power Solution Allows

is an easy-to-use integrated power solution that

Small Footprint, Low-Profile Design

combines

a

7-A

DC/DC

converter

with

power

•

10mm x 10mm x 4.3mm Package

MOSFETs, a shielded inductor, and passives into a

–

Pin Compatible with LMZ31710 & LMZ31704

low profile, QFN package. This total power solution

allows as few as three external components and

•

Efficiencies Up To 95%

eliminates the loop compensation and magnetics part

•

Eco-mode™ / Light Load Efficiency (LLE)

selection process.

•

Wide-Output Voltage Adjust

The 10x10x4.3 mm QFN package is easy to solder

0.6 V to 5.5 V, with 1% Reference Accuracy

onto a printed circuit board and allows a compact

•

Supports Parallel Operation for Higher Current

point-of-load design. Achieves greater than 95%

efficiency and excellent power dissipation capability

•

Optional Split Power Rail Allows

with

a

thermal

impedance

of

13.3°C/W.

The

Input Voltage Down to 2.95 V

LMZ31707 offers the flexibility and the feature-set of

•

Adjustable Switching Frequency

a discrete point-of-load design and is ideal for

(200 kHz to 1.2 MHz)

powering

a

wide

range

of

ICs

and

systems.

•

Synchronizes to an External Clock

Advanced packaging technology affords a robust and

reliable power solution compatible with standard QFN

•

Provides 180° out-of-phase Clock Signal

mounting and testing techniques.

•

Adjustable Slow-Start

•

Output Voltage Sequencing / Tracking

Figure 1. SIMPLIFIED APPLICATION

•

Power Good Output

•

Programmable Undervoltage Lockout (UVLO)

•

Over-Current & Over-Temperature Protection

•

Pre-Bias Output Start-Up

•

Operating Temperature Range: –40°C to 85°C

•

Enhanced Thermal Performance: 13.3°C/W

•

Meets EN55022 Class B Emissions

–

Integrated Shielded Inductor

APPLICATIONS

•

Broadband & Communications Infrastructure

•

Automated Test and Medical Equipment

•

Compact PCI / PCI Express / PXI Express

•

DSP and FPGA Point-of-Load Applications

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

Eco-mode is a trademark of Texas Instruments.

3

SIMPLE SWITCHER is a registered trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.