SIMPLE SWITCHER® 6V to 42V, 3A Power Module in Leaded Surface Mount TO Package - LMZ14203

LMZ14203 (ACTIVE)

SIMPLE SWITCHER® 6V to 42V, 3A Power Module in Leaded Surface Mount TO Package

Recommended alternative parts

  • LMZ10504  -  5.5V Input Voltage Max, 4A Output Current
  • LMZ12001  -  20V, 1A Input Voltage Max, Pin-to-Pin Compatible
  • LMZ12002  -  20V, 2A Input Voltage Max, Pin-to-Pin Compatible
  • LMZ12003  -  20V Input Voltage Max Version, Pin-to-Pin Compatible
  • LMZ14201  -  1A Version, Pin-to-Pin Compatible
  • LMZ14202  -  2A Version, Pin-to-Pin Compatible

Description

The LMZ14203 SIMPLE SWITCHER power module is an easy-to-use step-down DC-DC solution that can drive up to 3-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LMZ14203 is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ14203 can accept an input voltage rail between 6 V and 42 V and deliver an adjustable and highly accurate output voltage as low as 0.8 V. The LMZ14203 only requires three external resistors and four external capacitors to complete the power solution. The LMZ14203 is a reliable and robust design with the following protection features: thermal shutdown, input UVLO, output overvoltage protection, short-circuit protection, output current limit, and allows start-up into a prebiased output. A single resistor adjusts the switching frequency up to 1 MHz.

For all available packages, see the orderable addendum at the end of the data sheet. Peak reflow temperature equals 245°C. See SNAA214

Features

  • Integrated Shielded Inductor
  • Simple PCB Layout
  • Flexible Start-Up Sequencing Using External Soft-Start and Precision Enable
  • Protection Against Inrush Currents and Faults Such as Input UVLO and Output Short Circuit
  • –40°C to 125°C Junction Temperature Range
  • Single Exposed Pad and Standard Pinout for Easy Mounting and Manufacturing
  • Fast Transient Response for Powering FPGAs and ASICs
  • Low Output Voltage Ripple
  • Pin-to-Pin Compatible Family:
    • LMZ1420x (42 V Maximum 3 A, 2 A, 1 A)
    • LMZ1200x (20 V Maximum 3 A, 2 A, 1 A)
  • Fully Enabled for WEBENCH Power Designer
  • Electrical Specifications
    • 18-W Maximum Total Output Power
    • Up to 3-A Output Current
    • Input Voltage Range 6 V to 42 V
    • Output Voltage Range 0.8 V to 6 V
    • Efficiency up to 90%
  • Performance Benefits
    • Operates at High Ambient Temperature With No Thermal Derating
    • High Efficiency Reduces System Heat Generation
    • Low Radiated Emissions (Electromagnetic Interference [EMI]) Tested With EN55022 Class B Standard
    • Passes 10-V/m Radiated Immunity EMI Test Standard EN61000 4-3

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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)
Switching Frequency (Typ) (kHz)
Topology
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
LMZ14203 LMZ13608 LMZ13610 LMZ14201 LMZ14201EXT LMZ14201H LMZ14202 LMZ14202EXT LMZ14202H LMZ14203EXT LMZ14203H LMZ35003
SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER     SIMPLE SWITCHER    
3     8     10     1     1     1     2     2     2     3     3     2.5    
6     6     6     6     6     6     6     6     6     6     6     7    
42     36     36     42     42     42     42     42     42     42     42     50    
0.8     0.8     0.8     0.8     0.8     5     0.8     0.8     5     0.8     5     2.5    
6     6     6     6     6     24     6     6     24     6     24     15    
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable    
EMI Tested
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EMI Tested
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EMI Tested
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EMI Tested
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EMI Tested
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EMI Tested
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EMI Tested
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EMI Tested
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EMI Tested
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EMI Tested
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EMI Tested
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EMI Tested
Enable
Frequency Synchronization
Power Good
Remote Sense
Tracking    
1     1     1     1     1     1     1     1     1     1     1     1    
1000     404     404     1000     1000     1000     1000     1000     1000     1000     1000     1000    
200     314     314     200     200     200     200     200     200     200     200     300    
800     350     350     800     800     800     800     800     800     800     800     400    
Buck
Synchronous Buck    
Buck
Synchronous Buck    
Buck
Synchronous Buck    
Buck
Synchronous Buck    
Buck
Synchronous Buck    
Buck
Synchronous Buck    
Buck
Synchronous Buck    
Buck
Synchronous Buck    
Buck
Synchronous Buck    
Buck
Synchronous Buck    
Buck
Synchronous Buck    
Buck    
14     85     85     14     85     14     14     14     14     14     14     85    
-40 to 125     -40 to 85     -40 to 85     -40 to 125     -55 to 125     -40 to 125     -40 to 125     -55 to 125     -40 to 125     -55 to 125     -40 to 125     -40 to 85    
7TO-PMOD     11PFM     11PFM     7TO-PMOD     7TO-PMOD     7TO-PMOD     7TO-PMOD     7TO-PMOD     7TO-PMOD     7TO-PMOD     7TO-PMOD     41B1QFN    
8.50 | 1ku     12.80 | 1ku     14.10 | 1ku     5.85 | 1ku     11.90 | 1ku     5.85 | 1ku     6.75 | 1ku     13.80 | 1ku     6.75 | 1ku     16.80 | 1ku     8.50 | 1ku     7.95 | 1ku    
New! Interactive Design
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WEBENCH® LMZ14203
    Min   Max   Range  
  Vin V 6.0 to 42.0V  
  Vout V 0.8 to 6.0V  
  Iout A ≤ 3A  
  Ambient Temp °C -40 to 125°C  
Footprint BOM Cost Efficiency
 
   
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