0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

2.2

5

10

15

20

25

30

35

40

Input Voltage (V)

G000

INH/UVLO

VOUT

VIN

LMZ34002

VADJ

A_VOUT

GND

RT

STSEL

VOUT_PT

CLK

SS

LMZ34002

www.ti.com

SNVS989 – JULY 2013

2A, Negative Output, SIMPLE SWITCHER® Power Module with 4.5V-40V Input

in QFN Package

Check for Samples: LMZ34002

1

FEATURES

DESCRIPTION

•

Complete Integrated Power Solution Allows

The LMZ34002 SIMPLE SWITCHER® power module

Small Footprint, Low-Profile Design

is an easy-to-use, negative output voltage power

•

Wide Input Voltage Range from 4.5 V to 40 V

module that combines a 15-W DC/DC converter with

•

Output Adjustable from –3.0 V to –17 V

a shielded inductor, and passives into a low profile,

QFN package. This total power solution allows as few

•

Supplies up to 2-A of Output Current

as five external components and eliminates the loop

•

45-V Surge Capability

compensation and magnetics part selection process.

•

Synchronizes to an External Clock

The 9x11x2.8 mm QFN package is easy to solder

•

Adjustable Slow-Start

onto a printed circuit board and allows a compact

•

Programmable Undervoltage Lockout (UVLO)

design with fewer components and excellent power

dissipation capability. The LMZ34002 offers the

•

Output Overcurrent Protection

flexibility and the feature-set of a discrete design and

•

Over Temperature Protection

is ideal for powering a wide range of ICs and analog

•

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

circuits requiring a negative output voltage. Advanced

packaging technology affords a robust and reliable

•

Enhanced Thermal Performance: 14°C/W

power

solution

compatible

with

standard

QFN

•

Meets EN55022 Class B Emissions

mounting and testing techniques.

- Integrated Shielded Inductor

•

For Design Help visit

SIMPLIFIED APPLICATION

http://www.ti.com/LMZ34002

APPLICATIONS

•

Industrial and Motor Controls

•

Automated Test Equipment

•

Bipolar Amplifiers in Audio/Video

•

High Density Power Systems

Safe Operating Current

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.

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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.

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.