LMZ14201

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SNVS649D – JANUARY 2010 – REVISED JUNE 2011

LMZ14201 1A SIMPLE SWITCHER® Power Module with 42V Maximum Input Voltage

Check for Samples: LMZ14201

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FEATURES

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Pin-to-pin compatible family:

–

LMZ14203/2/1 (42V max 3A, 2A, 1A)

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Integrated shielded inductor

–

LMZ12003/2/1 (20V max 3A, 2A, 1A)

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Simple PCB layout

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Fully enabled for Webench® Power Designer

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Flexible startup sequencing using external

soft-start and precision enable

APPLICATIONS

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Protection against inrush currents and faults

such as input UVLO and output short circuit

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Point of load conversions from 12V and 24V

input rail

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– 40°C to 125°C junction temperature range

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Time critical projects

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Single exposed pad and standard pinout for

easy mounting and manufacturing

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Space constrained / high thermal requirement

applications

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Fast transient response for powering FPGAs

and ASICs

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Negative output voltage applications (See AN-

2027)

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Low output voltage ripple

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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Copyright © 2010–2011, Texas Instruments Incorporated

formative or design phase of development. Characteristic data and

other specifications are design goals. Texas Instruments reserves

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