3A SIMPLE SWITCHER® Power Module with 36V Maximum Input Voltage - LMZ23603

LMZ23603 (ACTIVE)

3A SIMPLE SWITCHER® Power Module with 36V Maximum Input Voltage

 

Recommended alternative parts

  • LMZ14203  -  42V Input Voltage Max, 3A Output, No Frequency Synchronization
  • LMZ22005  -  20V Input Voltage Max Version, Pin-to-Pin Compatible
  • LMZ23605  -  5A Version, Pin-to-Pin Compatible

Description

The LMZ23603 SIMPLE SWITCHER® power module is an easy-to-use step-down DC-DC solution capable of driving up to 3-A load. The LMZ23603 is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ23603 can accept an input voltage rail between 6 V and 36 V and deliver an adjustable and highly accurate output voltage as low as 0.8 V. The LMZ23603 only requires two external resistors and three external capacitors to complete the power solution. The LMZ23603 is a reliable and robust design with the following protection features: thermal shutdown, programmable input undervoltage lockout, output overvoltage protection, short circuit protection, output current limit, and allows start-up into a prebiased output. The sync input allows synchronization over the 650-kHz to 950-kHz switching frequency range.

Features

  • Integrated Shielded Inductor
  • Simple PCB Layout
  • Frequency Synchronization Input (650 kHz to 950
    kHz)
  • Flexible Startup Sequencing Using External Soft-
    start, Tracking and Precision Enable
  • Protection Against Inrush Currents and Faults
    Such as Input UVLO and Output Short Circuit
  • Junction Temperature Range –40°C to
    125°C
  • Single Exposed Pad and Standard Pinout for
    Easy Mounting and Manufacturing
  • Fast Transient Response for Powering FPGAs
    and ASICs
  • Fully Enabled for WEBENCH Power Designer
  • Pin Compatible With
    LMZ22005/LMZ23605/LMZ22003
  • Performance Benefits
    • High Efficiency Reduces System Heat
      Generation
    • Tested to EN55022 Class B(1)
      • See AN-2125 (SNVA473) and layout for
        information on device under test.
      • VIN = 24 V, VO = 3.3 V, IO = 3 A
    • Low component count, only 5 external
      components
    • Low output voltage ripple
    • Uses PCB as heat sink, no airflow
      required
  • Electrical Specifications
    • 18-W maximum total output power
    • Up to 3-A output current
    • Input voltage range 6 V to 36 V
    • Output voltage range 0.8 V to 6 V
    • Efficiency up to 92%

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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
Iq (Typ) (mA)
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
LMZ23603 LMZ14202 LMZ14202H LMZ14203 LMZ14203H LMZ22005 LMZ23605 LMZ34202 LMZ35003 LMZ36002
3    2    2    3    3    5    5    2    2.5    2   
6    6    6    6    6    6    6    4.5    7    4.5   
36    42    42    42    42    20    36    42    50    60   
0.8    0.8    5    0.8    5    0.8    0.8    2.5    2.5    2.5   
6    6    24    6    24    6    6    7.5    15    7.5   
Adjustable    Adjustable    Adjustable    Adjustable    Adjustable    Adjustable    Adjustable    Adjustable    Adjustable    Adjustable   
EMI Tested
Enable
Frequency Synchronization
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
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   
2.6    1    1    1    1    2.6           
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)     
950    1000    1000    1000    1000    950    950    1000    1000    1000   
650    200    200    200    200    650    650    200    300    200   
812    800    800    800    800    812    812    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 85    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 85    -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      41B1QFN     
New! Interactive Design
Click to instantly view a schematic, charts, Bill of Materials, and Operating Values.

WEBENCH® Designer LMZ23603

  Min   Max Range
Vin  V 6.0 to 36.0V
Vout  V 0.8 to 6V
Iout  A ≤ 3A
Ambient Temp  °C -40 to 125°C


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