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LMZ12003 Datasheet(PDF) 11 Page - Texas Instruments

No. de pieza LMZ12003
Descripción Electrónicos  LMZ12003 3-A Simple Switcher짰 Power Module with 20-V Maximum Input Voltage
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

LMZ12003 Datasheet(HTML) 11 Page - Texas Instruments

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background image
EP
VIN
CIN2
10 2F
Enable
4.5V to 20V
CFF
0.022 2F
U1
CSS
0.022 2F
RFBB
1.07k
LMZ12003TZ-ADJ
1.8VO @ 3A
CO1
1 2F
CO2
100 2F
RON
32.4k
RENT
32.4k
RENB
11.8k
RFBT
1.37k
CIN1
1 2F
LMZ12003
www.ti.com
SNVS636O – DECEMBER 2009 – REVISED AUGUST 2015
8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The LMZ12003 is a step-down DC-to-DC power module. It is typically used to convert a higher DC voltage to a
lower DC voltage with a maximum output current of 3 A. The following design procedure can be used to select
components for the LMZ12003. Alternately, the WEBENCH software may be used to generate complete designs.
When generating a design, the WEBENCH software uses iterative design procedure and accesses
comprehensive databases of components. Please go to www.ti.com for more details.
8.2 Typical Application
Figure 16. Evaluation Board Schematic Diagram
8.2.1 Design Requirements
For this example the following application parameters exist.
VIN Range = Up to 20 V
VOUT = 0.8 V to 6 V
IOUT = 3 A
8.2.2 Detailed Design Procedure
The LMZ12003 is fully supported by WEBENCH and offers the following: component selection, electrical and
thermal simulations, as well as the build-it board for a reduction in design time. The following list of steps can be
used to manually design the LMZ12003 application.
1. Select minimum operating VIN with enable divider resistors
2. Program VO with divider resistor selection
Copyright © 2009–2015, Texas Instruments Incorporated
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Product Folder Links: LMZ12003


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