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LMZ34002_14

更新时间： 2024-01-22 14:09:45
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德州仪器 - TI /
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31页 857K
描述
Using the LMZ34002: Negative Output Voltage Simple Switcher® Power Module Evaluation Module

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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  
1
FEATURES  
DESCRIPTION  
•
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.  
•
•
•
•
•
•
•
•
•
•
•
•
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  
•
For Design Help visit  
http://www.ti.com/LMZ34002  
SIMPLIFIED APPLICATION  
LMZ34002  
V
-V  
C
IN  
OUT  
APPLICATIONS  
VIN  
VOUT  
VOUT_PT  
A_VOUT  
•
•
•
•
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.  
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.  
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  
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