LMZ14203EXTTZ/NOPB

The LMZ14203EXT SIMPLE SWITCHER power module is an easy-to-use step-down DC-to-DC (DC-DC) solution that can drive loads of up to 3A with excellent power conversion efficiency, line and load regulation, and output accuracy. It uses an innovative package to improve thermal performance and enable manual or machine soldering. It can accept input voltage rails between 6V and 42V and provide an adjustable and highly accurate output voltage as low as 0.8V. Only 3 external resistors and 4 external capacitors are needed to complete the power supply solution. It is a reliable and durable design with the following protection features: thermal shutdown, input under-voltage lockout, output over-voltage protection, short-circuit protection, output current limiting, and it allows startup to a pre-biased output. A single resistor adjusts the switching frequency to 1MHz.

Applications

• Point-of-load conversion from 12V and 24V input supply rails
• Time-critical projects
• Space-constrained/high thermal demand applications
• Negative output voltage applications

Key features

• Junction temperature range: -55°C to 125°C
• Integrated shielded inductor
• Simple PCB layout and routing
• Flexible startup sequencing with external soft-start and precision enable
• Protection against inrush current and faults such as input UVLO and output short circuit
• Single exposed pad and standard pin assignment for simple assembly and manufacturing
• Fast transient response for FPGA and ASIC power supply
• Low output voltage ripple
• Pin-to-pin compatible family: LMZ14203EXT/2EXT/1EXT (42V max, 3A, 2A, 1A), LMZ12003/2/1 (20V max, 3A, 2A, 1A), LMZ14203/2/1 (42V max, 3A, 2A, 1A)
• Fully enabled for Webench Power Design Tool