LMZ31506 (ACTIVE)

6A SIMPLE SWITCHER® Power Module with 2.95V-14.5V Input in QFN package 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

 
Brand
Iout (Max) (A)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Soft Start
Special Features
Regulated Outputs (#)
Switching Frequency (Max) (kHz)
Switching Frequency (Min) (kHz)
Topology
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
LMZ31506 LMZ31503 LMZ31506H LMZ31520 LMZ31530 LMZ31704 LMZ31707 LMZ31710
SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER    
6     3     6     20     30     4     7     10    
2.95     4.5     4.5     3     3     2.95     2.95     2.95    
14.5     14.5     14.5     14.5     14.5     17     17     17    
0.6     0.8     1.2     0.6     0.6     0.6     0.6     0.6    
5.5     5.5     5.5     3.6     3.6     5.5     5.5     5.5    
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable    
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    
EMI Tested
Enable
Light Load Efficiency
Power Good
Remote Sense    
EMI Tested
Enable
Light Load Efficiency
Power Good
Remote Sense    
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    
Current Sharing
EMI Tested
Frequency Synchronization
Power Good
Remote Sense
Tracking
Light Load Efficiency    
1     1     1     1     1     1     1     1    
780     780     780     850     850     1200     1200     1200    
250     330     480     300     300     200     200     200    
Buck     Buck     Buck     Buck     Buck     Buck     Buck     Buck    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
47B1QFN     47B1QFN     47B1QFN     72BQFN     72BQFN     42B3QFN     42B3QFN     42B3QFN    
5.45 | 1ku     4.25 | 1ku     5.45 | 1ku     14.00 | 1ku     17.00 | 1ku     5.25 | 1ku     6.50 | 1ku     8.95 | 1ku    
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WEBENCH® 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  
Footprint BOM Cost Efficiency
 
   
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