LMZ31506_15 Datasheet, PDF (1/35 Pages) Texas Instruments – 6A SIMPLE SWITCHER® Power Module with 2.95V-14.5V Input and Current Sharing in QFN Package

LMZ31506
www.ti.com
SNVS993 – JUNE 2013
6A SIMPLE SWITCHER^® Power Module with 2.95V-14.5V Input and Current Sharing
in QFN Package
Check for Samples: LMZ31506
FEATURES
1
•2 Complete Integrated Power Solution Allows
Small Footprint, Low-Profile Design
• 9mm x 15mm x 2.8mm package
- Pin Compatible with LMZ31503
• Efficiencies Up To 96%
• Wide-Output Voltage Adjust
0.6 V to 5.5 V, with 1% Reference Accuracy
• Supports Parallel Operation for Higher Current
• Optional Split Power Rail allows
input voltage down to 1.6 V
• Adjustable Switching Frequency
(250 kHz to 780 kHz)
• Synchronizes to an External Clock
• Adjustable Slow-Start
• Output Voltage Sequencing / Tracking
• Power Good Output
• Programmable Undervoltage Lockout (UVLO)
• Output Overcurrent Protection (Hiccup Mode)
• Over-Temperature Protection
• Pre-bias Output Start-up
• Operating Temperature Range: –40°C to 85°C
• Enhanced Thermal Performance: 13°C/W
• Meets EN55022 Class B Emissions
- Integrated Shielded Inductor
APPLICATIONS
• Broadband & Communications Infrastructure
• Automated Test and Medical Equipment
• Compact PCI, PCI Express and PXI Express
• DSP and FPGA Point of Load Applications
100
95
90
85
80
75
70
VOUT = 3.3 V
fSW = 630 kHz
65
60
55
PVIN = VIN = 5 V
PVIN = VIN = 12 V
50
0
1
2
3
4
5
6
Output Current (A)
G000
DESCRIPTION
The LMZ31506 SIMPLE SWITCHER® power module
is an easy-to-use integrated power solution that
combines a 6-A DC-to-DC converter with power
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.
The 9×15×2.8 mm QFN package is easy to solder
onto a printed circuit board and allows a compact
point-of-load design with greater than 90% efficiency
and excellent power dissipation with a thermal
impedance of 13°C/W junction to ambient. The
device delivers the full 6-A rated output current at
85°C ambient temperature without airflow.
The LMZ31506 offers the flexibility and the feature-
set of a discrete point-of-load design and is ideal for
powering performance DSPs and FPGAs. Advanced
packaging technology afford a robust and reliable
power solution compatible with standard QFN
mounting and testing techniques.
SIMPLIFIED APPLICATION
V_IN
C_IN
VIN
ISHARE
PVIN PWRGD
LMZ31506
VOUT
RT/CLK
SENSE+
INH/UVLO
SS/TR
VADJ
STSEL
PGND
AGND
V_OUT
C_OUT
R_SET
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.
SIMPLE SWITCHER is a registered trademark of Texas Instruments.
2
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