LMZ14201_14 Datasheet, PDF (1/24 Pages) Texas Instruments – 1A SIMPLE SWITCHER® Power Module with 42V Maximum Input Voltage

LMZ14201
www.ti.com
SNVS649D – JANUARY 2010 – REVISED JUNE 2011
LMZ14201 1A SIMPLE SWITCHER® Power Module with 42V Maximum Input Voltage
Check for Samples: LMZ14201
FEATURES
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•2 Integrated shielded inductor
• Simple PCB layout
• Flexible startup 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:
– LMZ14203/2/1 (42V max 3A, 2A, 1A)
– LMZ12003/2/1 (20V max 3A, 2A, 1A)
• Fully enabled for Webench® Power Designer
APPLICATIONS
• Point of load conversions from 12V and 24V
input rail
• Time critical projects
• Space constrained / high thermal requirement
applications
• Negative output voltage applications (See AN-
2027)
DESCRIPTION
The LMZ14201 SIMPLE SWITCHER power module is an easy-to-use step-down DC-DC solution capable of
driving up to 1A load with exceptional power conversion efficiency, line and load regulation, and output accuracy.
The LMZ14201 is available in an innovative package that enhances thermal performance and allows for hand or
machine soldering.
The LMZ14201 can accept an input voltage rail between 6V and 42V and deliver an adjustable and highly
accurate output voltage as low as 0.8V. The LMZ14201 only requires three external resistors and four external
capacitors to complete the power solution. The LMZ14201 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
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2
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