LMZ14202H Datasheet, PDF (1/28 Pages) National Semiconductor (TI) – 2A SIMPLE SWITCHER Power Module for High Output Voltage

LMZ14202H
www.ti.com
SNVS691D – JANUARY 2011 – REVISED FEBRUARY 2013
LMZ14202H 2A, SIMPLE SWITCHER^® Power Module for High Output Voltage
Check for Samples: LMZ14202H
FEATURES
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•23 Integrated Shielded Inductor
• Simple PCB Layout
• Flexible Startup Sequencing Using External
Soft-start and Precision Enable
• Protection Against Inrush Currents
• Input UVLO and Output Short Circuit
Protection
• – 40°C to 125°C Junction Temperature Range
• Single Exposed Pad and Standard Pinout for
Easy Mounting and Manufacturing
• Low Output Voltage Ripple
• Pin-to-pin Compatible Family:
– LMZ14203H/2H/1H (42V Max 3A, 2A, 1A)
– LMZ14203/2/1 (42V Max 3A, 2A, 1A)
– LMZ12003/2/1 (20V Max 3A, 2A, 1A)
• Fully Enabled for Webench® Power Designer
APPLICATIONS
• Intermediate Bus Conversions to 12V and 24V
Rail
• Time Critical Projects
• Space Constrained / High Thermal
Requirement Applications
• Negative Output Voltage Applications
ELECTRICAL SPECIFICATIONS
• Up to 2A Output Current
• Input Voltage Range 6V to 42V
• Output Voltage as Low as 5V
• Efficiency up to 97%
PERFORMANCE BENEFITS
• High Efficiency Reduces System Heat
Generation
• Low Radiated EMI(EN 55022 Class B
Compliant) ⁽¹⁾
• No Compensation Required
• Low Package Thermal Resistance
DESCRIPTION
The LMZ14202H SIMPLE SWITCHER power module
is an easy-to-use step-down DC-DC solution capable
of driving up to 2A load with exceptional power
conversion efficiency, line and load regulation, and
output accuracy. The LMZ14202H is available in an
innovative package that enhances thermal
performance and allows for hand or machine
soldering.
The LMZ14202H can accept an input voltage rail
between 6V and 42V and deliver an adjustable and
highly accurate output voltage as low as 5V. The
LMZ14202H only requires three external resistors
and four external capacitors to complete the power
solution. The LMZ14202H is a reliable and robust
design with the following protection features: thermal
shutdown, input under-voltage lockout, output over-
voltage protection, short-circuit protection, output
current limit, and allows startup into a pre-biased
output. A single resistor adjusts the switching
frequency up to 1 MHz.
Figure 1. Easy to use 7 pin package
PFM 7 Pin Package
10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in)
θ_JA = 16°C/W, θ_JC = 1.9°C/W
RoHS Compliant
(1) EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SIMPLE SWITCHER is a registered trademark of Texas Instruments.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2013, Texas Instruments Incorporated