LMZ12002EXT数据手册电源-板安装的直流转换器规格书PDF

描述 Description

The LMZ12002EXT 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 LMZ12002EXT is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.

The LMZ12002EXT can accept an input voltage rail between 4.5V and 20V and deliver an adjustable and highly accurate output voltage as low as 0.8V. The LMZ12002EXT only requires three external resistors and four external capacitors to complete the power solution. The LMZ12002EXT 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.

Electrical Specifications

12W maximum total power output Up to 2A output current Input voltage range 4.5V to 20V Output voltage range 0.8V to 6V Efficiency up to 92%Key Features

-55°C to 125°C junction temperature range Integrated shielded inductor Simple PCB layout Flexible startup sequencing using external soft-start capacitor and precision enableProtection against inrush currents and faults such as input UVLO and output short circuit Single exposed pad and standard pinout for easy mounting and manufacturing Fast transient response for FPGAs and ASICs Low output voltage ripple Pin-to-pin compatible family:LMZ14203EXT/2EXT/1EXT (42V max 3A, 2A, 1A)LMZ14203/2/1 (42V max 3A, 2A, 1A)LMZ12003/2/1 (20V max 3A, 2A, 1A) Fully Webench® Power Designer enabled