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LMZ31707

更新时间: 2024-11-09 12:06:03
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德州仪器 - TI 电源电路
页数 文件大小 规格书
33页 964K
描述
7A SIMPLE SWITCHER® Power Module with 2.95V-17V Input and Current Sharing in QFN Package

LMZ31707 数据手册

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LMZ31707  
www.ti.com  
SLVSBV7A JUNE 2013REVISED AUGUST 2013  
®
7A SIMPLE SWITCHER Power Module with 2.95V-17V Input and Current Sharing  
in QFN Package  
Check for Samples: LMZ31707  
1
FEATURES  
DESCRIPTION  
The LMZ31707 SIMPLE SWITCHER® power module  
is an easy-to-use integrated power solution that  
23  
Complete Integrated Power Solution Allows  
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  
low profile, QFN package. This total power solution  
allows as few as three external components and  
eliminates the loop compensation and magnetics part  
selection process.  
Pin Compatible with LMZ31710 & LMZ31704  
Efficiencies Up To 95%  
Eco-mode™ / Light Load Efficiency (LLE)  
Wide-Output Voltage Adjust  
0.6 V to 5.5 V, with 1% Reference Accuracy  
The 10x10x4.3 mm QFN package is easy to solder  
onto a printed circuit board and allows a compact  
point-of-load design. Achieves greater than 95%  
efficiency and excellent power dissipation capability  
Supports Parallel Operation for Higher Current  
Optional Split Power Rail Allows  
Input Voltage Down to 2.95 V  
with  
a
thermal impedance of 13.3°C/W. The  
LMZ31707 offers the flexibility and the feature-set of  
a discrete point-of-load design and is ideal for  
Adjustable Switching Frequency  
(200 kHz to 1.2 MHz)  
powering  
a wide range of ICs and systems.  
Synchronizes to an External Clock  
Provides 180° out-of-phase Clock Signal  
Adjustable Slow-Start  
Advanced packaging technology affords a robust and  
reliable power solution compatible with standard QFN  
mounting and testing techniques.  
Output Voltage Sequencing / Tracking  
Power Good Output  
Figure 1. SIMPLIFIED APPLICATION  
Programmable Undervoltage Lockout (UVLO)  
Over-Current & Over-Temperature Protection  
Pre-Bias Output Start-Up  
V
IN  
PVIN  
VIN  
ISHARE  
VOUT  
V
OUT  
CIN  
Operating Temperature Range: –40°C to 85°C  
Enhanced Thermal Performance: 13.3°C/W  
Meets EN55022 Class B Emissions  
SENSE+  
C
OUT  
LMZ31707  
SYNC_OUT  
PWRGD  
Integrated Shielded Inductor  
INH/UVLO  
APPLICATIONS  
VADJ  
Broadband & Communications Infrastructure  
Automated Test and Medical Equipment  
Compact PCI / PCI Express / PXI Express  
DSP and FPGA Point-of-Load Applications  
SS/TR  
RT/CLK  
R
SET  
STSEL  
R
RT  
AGND PGND  
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
3
Eco-mode is a trademark of Texas Instruments.  
SIMPLE SWITCHER is a registered trademark of Texas Instruments.  
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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