LMZ34002_14 Datasheet, PDF (1/32 Pages) Texas Instruments – Using the LMZ34002: Negative Output Voltage Simple Switcher® Power Module Evaluation Module

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
FEATURES
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• Complete Integrated Power Solution Allows
Small Footprint, Low-Profile Design
• 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
• 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
• For Design Help visit
http://www.ti.com/LMZ34002
APPLICATIONS
• Industrial and Motor Controls
• Automated Test Equipment
• Bipolar Amplifiers in Audio/Video
• High Density Power Systems
DESCRIPTION
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.
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.
SIMPLIFIED APPLICATION
V_IN
C_IN
LMZ34002
VIN
VOUT
VOUT_PT
A_VOUT
INH/UVLO
RT
-V_OUT
C_OUT
Safe Operating Current
CLK
STSEL
2.2
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
5
V_O = –3.3 V
V_O = –5 V
V_O = –12 V
V_O = –15 V
10
15
20
25
30
35
40
Input Voltage (V)
G000
SS
VADJ
GND
R_SET
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