1 Features

1• Complete Integrated Power Solution Allows

Small Footprint, Low-Profile Design

• 9-mm × 15-mm × 2.8-mm 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

• Create a Custom Design Using the LMZ31506

With the WEBENCH® Power Designer

2 Applications

• Broadband & Communications Infrastructure

• Automated Test and Medical Equipment

• Compact PCI, PCI Express and PXI Express

• DSP and FPGA Point of Load Applications

3 Description

The LMZ31506 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 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.