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参数资料
| 型号： | TPS84320RUQT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 3 A SWITCHING REGULATOR, 390 kHz SWITCHING FREQ-MAX, PQCC47 |
| 封装： | 9 X 15 MM, 2.80 MM HEIGHT, GREEN, PLASTIC, QFN-47 |
| 文件页数： | 1/28页 |
| 文件大小： | 903K |
| 代理商： | TPS84320RUQT |
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VOUT
PVIN
VIN
TPS84320
SENSE+
VADJ
AGND
PGND
COUT
RSET
VOUT
CIN
VIN
UDG-10082
PWRGD
STSEL
RT/CLK
INH/UVLO
SS/TR
40
45
50
55
60
65
70
75
80
85
90
95
100
0
0.5
1
1.5
2
2.5
3
Output Current (A)
Efficiency
(%)
VIN = PVIN = 5 V,VOUT = 3.3V, fSW = 630 kHz
VIN = PVIN = 12 V,VOUT = 3.3V, fSW = 630 kHz
G000
SLUSAH7
– SEPTEMBER 2011
4.5-V to 14.5-V Input, 3-A Synchronous Buck, Integrated Power Solution
Check for Samples: TPS84320
1
FEATURES
DESCRIPTION
2
Complete Integrated Power Solution Allows
The TPS84320RUQ is an easy-to-use integrated
Small Footprint, Low-Profile Design
power solution that combines a 3-A DC/DC converter
Efficiencies Up To 95%
with power MOSFETs, an inductor, and passives into
Wide-Output Voltage Adjust
a low profile, BQFN package. This total power
0.8 V to 5.5 V, with 1% Reference Accuracy
solution allows as few as 3 external components and
eliminates the loop compensation and magnetics
Optional Split Power Rail Allows
design process.
Input Voltage Down to 1.6 V
The 9
×15×2.8 mm BQFN package is easy to solder
Adjustable Switching Frequency
onto a printed circuit board and allows a compact
(330 kHz to 780 kHz)
point-of-load design with up to 95% efficiency and
Synchronizes to an External Clock
excellent power dissipation with a thermal impedance
Adjustable Slow-Start
of 13
°C/W junction to ambient. The device delivers
the full 3-A rated output current at 85
°C ambient
Output Voltage Sequencing / Tracking
temperature without airflow.
Power Good Output
The
TPS84320
offers
the
flexibility
and
the
Programmable Undervoltage Lockout (UVLO)
feature-set of a discrete point-of-load design and is
Overcurrent Protection - Hiccup-Mode
ideal for powering performance DSPs and FPGAs.
Over Temperature Protection
Advanced packaging technology afford a robust and
reliable power solution compatible with standard QFN
Pre-bias Output Start-up
mounting and testing techniques.
Operating Temperature Range:
–40°C to 85°C
Enhanced Thermal Performance: 13
°C/W
SIMPLIFIED APPLICATION
Meets EN55022 Class B Emissions
For Design Help Including SwitcherPro
visit
APPLICATIONS
Broadband
& Communications Infrastructure
Automated Test and Medical Equipment
Compact PCI / PCI Express / PXI Express
DSP and FPGA Point of Load Applications
High Density Distributed Power Systems
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
SwitcherPro is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright
2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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