LMZ34002
www.ti.com
SNVS989A –JULY 2013–REVISED SEPT 2013
2A, Negative Output, SIMPLE SWITCHER® Power Module with 4.5V-40V Input
in QFN Package
Check for Samples: LMZ34002
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FEATURES
DESCRIPTION
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Complete Integrated Power Solution Allows
Small Footprint, Low-Profile Design
The LMZ34002 SIMPLE SWITCHER® power module
is an easy-to-use, negative output voltage power
module that combines a 15-W DC/DC converter with
a shielded inductor, and passives into a low profile,
QFN package. This total power solution allows as few
as five external components and eliminates the loop
compensation and magnetics part selection process.
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Wide Input Voltage Range from 4.5 V to 40 V
Output Adjustable from –3.0 V to –17 V
Supplies up to 2-A of Output Current
45-V Surge Capability
Synchronizes to an External Clock
Adjustable Slow-Start
The 9x11x2.8 mm QFN package is easy to solder
onto a printed circuit board and allows a compact
design with fewer components and excellent power
dissipation capability. The LMZ34002 offers the
flexibility and the feature-set of a discrete design and
is ideal for powering a wide range of ICs and analog
circuits requiring a negative output voltage. Advanced
packaging technology affords a robust and reliable
power solution compatible with standard QFN
mounting and testing techniques.
Programmable Undervoltage Lockout (UVLO)
Output Overcurrent Protection
Over Temperature Protection
Operating Temperature Range: –40°C to 85°C
Enhanced Thermal Performance: 14°C/W
Meets EN55022 Class B Emissions
- Integrated Shielded Inductor
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For Design Help visit
http://www.ti.com/LMZ34002
SIMPLIFIED APPLICATION
LMZ34002
V
-V
C
IN
OUT
APPLICATIONS
VIN
VOUT
VOUT_PT
A_VOUT
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Industrial and Motor Controls
Automated Test Equipment
Bipolar Amplifiers in Audio/Video
High Density Power Systems
C
IN
OUT
INH/UVLO
RT
CLK
STSEL
Safe Operating Current
2.2
2
SS
VADJ
GND
1.8
1.6
1.4
1.2
1
R
SET
0.8
0.6
0.4
0.2
0
VO = –3.3 V
VO = –5 V
VO = –12 V
VO = –15 V
5
10
15
20
25
30
35
40
Input Voltage (V)
G000
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated