LMZ31506 (ACTIVE)

4.5V to 15V, 6A Step-Down Power Module in 9x15x2.8mm QFN Package

4.5V to 15V, 6A Step-Down Power Module in 9x15x2.8mm QFN Package - LMZ31506
 

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 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.

Features

  • 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

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Parametrics Compare all products in Step-Down (Buck) Module

 
Iout (Max) (A)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Soft Start
Features
Regulated Outputs (#)
Package Size: mm2:W x L (PKG)
Switching Frequency (Max) (kHz)
Switching Frequency (Min) (kHz)
Switching Frequency (Typ) (kHz)
Topology
Operating Temperature Range (C)
Pin/Package
LMZ31506 LMZ31707
6    7   
2.95    2.95   
14.5    17   
0.6    0.6   
5.5    5.5   
Adjustable    Adjustable   
Current Sharing
EMI Tested
Enable
Frequency Synchronization
Power Good
Remote Sense
Tracking   
Current Sharing
EMI Tested
Frequency Synchronization
Power Good
Remote Sense
Tracking
Light Load Efficiency   
1    1   
47B1QFN: 135 mm2: 9 x 15(B1QFN)    42B3QFN: 100 mm2: 10 x 10(B3QFN)   
780    1200   
250    200   
500    1000   
Buck    Buck   
-40 to 85    -40 to 85   
47B1QFN    42B3QFN   
New! Interactive Design
Click to instantly view a schematic, charts, Bill of Materials, and Operating Values.

WEBENCH® Designer LMZ31506

  Min   Max Range
Vin  V 4.5 to 14.5V
Vout  V 0.6 to 5.5V
Iout  A ≤ 6A
Ambient Temp  °C -40 to 125°C


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