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

 

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.

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])(1)
    • 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

 
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$)
LMZ14203 LMZ14201 LMZ14201H LMZ14202 LMZ14202H LMZ14203H LMZ23603 LMZ34202 LMZ35003 LMZ36002
3    1    1    2    2    3    3    2    2.5    2   
6    6    6    6    6    6    6    4.5    7    4.5   
42    42    42    42    42    42    36    42    50    60   
0.8    0.8    5    0.8    5    5    0.8    2.5    2.5    2.5   
6    6    24    6    24    24    6    7.5    15    7.5   
Adjustable    Adjustable    Adjustable    Adjustable    Adjustable    Adjustable    Adjustable    Adjustable    Adjustable    Adjustable   
EMI Tested
Enable
Tracking   
EMI Tested
Enable
Tracking   
EMI Tested
Enable
Tracking   
EMI Tested
Enable
Tracking   
EMI Tested
Enable
Tracking   
EMI Tested
Enable
Tracking   
EMI Tested
Enable
Frequency Synchronization
Tracking   
EMI Tested
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Remote Sense   
EMI Tested
Enable
Frequency Synchronization
Power Good
Remote Sense
Tracking   
EMI Tested
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Remote Sense   
1    1    1    1    1    1    1    1    1    1   
7TO-PMOD: 140 mm2: 13.77 x 10.16(TO-PMOD)    7TO-PMOD: 140 mm2: 13.77 x 10.16(TO-PMOD)    7TO-PMOD: 140 mm2: 13.77 x 10.16(TO-PMOD)    7TO-PMOD: 140 mm2: 13.77 x 10.16(TO-PMOD)    7TO-PMOD: 140 mm2: 13.77 x 10.16(TO-PMOD)    7TO-PMOD: 140 mm2: 13.77 x 10.16(TO-PMOD)    7TO-PMOD: 140 mm2: 13.77 x 10.16(TO-PMOD)      41B1QFN: 99 mm2: 9 x 11(B1QFN)     
1000    1000    1000    1000    1000    1000    950    1000    1000    1000   
200    200    200    200    200    200    650    200    300    200   
800    800    800    800    800    800      500    400    500   
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    Buck
Synchronous Buck   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 85    -40 to 105    -40 to 85    -40 to 105   
7TO-PMOD    7TO-PMOD    7TO-PMOD    7TO-PMOD    7TO-PMOD    7TO-PMOD    7TO-PMOD    43B3QFN    41B1QFN    43B3QFN   
8.50 | 1ku    5.85 | 1ku    5.85 | 1ku    6.75 | 1ku    6.75 | 1ku    8.50 | 1ku    7.95 | 1ku    6.95 | 1ku    7.95 | 1ku    7.95 | 1ku   
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WEBENCH® Designer 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


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