TPS84320RUQTG4.A中文资料德州仪器数据手册PDF规格书

1 FEATURES

1• Complete Integrated Power Solution Allows

Small Footprint, Low-Profile Design

• Efficiencies Up To 95%

• Wide-Output Voltage Adjust

0.8 V to 5.5 V, with 1% Reference Accuracy

• Optional Split Power Rail Allows

Input Voltage Down to 1.6 V

• Adjustable Switching Frequency

(330 kHz to 780 kHz)

• Synchronizes to an External Clock

• Adjustable Slow-Start

• Output Voltage Sequencing / Tracking

• Power Good Output

• Programmable Undervoltage Lockout (UVLO)

• 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

• For Design Help Including SwitcherPro™ visit

http://www.ti.com/TPS84320

2 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

3 DESCRIPTION

The TPS84320RUQ is an easy-to-use integrated

power solution that combines a 3-A DC/DC converter

with power MOSFETs, an inductor, and passives into

a low profile, BQFN package. This total power

solution allows as few as 3 external components and

eliminates the loop compensation and magnetics

design process.

The 9×15×2.8 mm BQFN package is easy to solder

onto a printed circuit board and allows a compact

point-of-load design with up to 95% efficiency and

excellent power dissipation with a thermal impedance

of 13°C/W junction to ambient. The device delivers

the full 3-A rated output current at 85°C ambient

temperature without airflow.

The TPS84320 offers the flexibility and the featureset

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.