LMZ31506 (ACTIVE)

SIMPLE SWITCHER® 2.95V to 14.5V, 6A Power Module with Current Sharing

 

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.

Features

  • 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

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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
Special 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
Approx. Price (US$)
LMZ31506 LMZ31503 LMZ31506H LMZ31704 LMZ31707
6    3    6    4    7   
2.95    4.5    4.5    2.95    2.95   
14.5    14.5    14.5    17    17   
0.6    0.8    1.2    0.6    0.6   
5.5    5.5    5.5    5.5    5.5   
Adjustable    Adjustable    Adjustable    Adjustable    Adjustable   
Current Sharing
EMI Tested
Enable
Frequency Synchronization
Power Good
Remote Sense
Tracking   
EMI Tested
Enable
Frequency Synchronization
Power Good
Remote Sense
Tracking   
EMI Tested
Enable
Frequency Synchronization
Power Good
Remote Sense
Tracking   
Current Sharing
EMI Tested
Frequency Synchronization
Power Good
Remote Sense
Tracking
Light Load Efficiency   
Current Sharing
EMI Tested
Frequency Synchronization
Power Good
Remote Sense
Tracking
Light Load Efficiency   
1    1    1    1    1   
47B1QFN: 135 mm2: 9 x 15(B1QFN)    47B1QFN: 135 mm2: 9 x 15(B1QFN)    47B1QFN: 135 mm2: 9 x 15(B1QFN)    42B3QFN: 100 mm2: 10 x 10(B3QFN)    42B3QFN: 100 mm2: 10 x 10(B3QFN)   
780    780    780    1200    1200   
250    330    480    200    200   
500    500    600    1000    1000   
Buck    Buck    Buck    Buck    Buck   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
47B1QFN    47B1QFN    47B1QFN    42B3QFN    42B3QFN   
5.45 | 1ku    4.25 | 1ku    5.45 | 1ku    5.25 | 1ku    6.50 | 1ku   
New! Interactive Design
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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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