LMR14206XMKXSLASHNOPB中文资料德州仪器数据手册PDF规格书

1 Features

1• Input Voltage Range of 4.5V to 42V

• Output Voltage Range of 0.765V to 34V

• Output Vurrent up to 0.6A

• 1.25 MHz Switching Frequency

• Low Shutdown Iq, 16 μA Typical

• Short Circuit Protected

• Internally Compensated

• Soft-Start Function

• Thin 6-Pin SOT Package (2.97 x 1.65 x 1mm)

• Fully Enabled for WEBENCH® Power Designer

2 Performance Benefits

• Tight Accuracy for Powering Digital ICs

• Extremely Easy to Use

• Tiny Overall Solution Reduces System Cost

3 Applications

• Point-of-Load Conversions from 5V, 12V, and 24V

Rails

• Space Constrained Applications

• Battery Powered Equipment

• Industrial Distributed Power Applications

• Power Meters

• Portable Hand-Held Instruments

4 Description

The LMR14206 is a PWM DC/DC buck (step-down)

regulator. With a wide input range from 4.5V-42V,

they are suitable for a wide range of applications

such as power conditioning from unregulated

sources. They feature a low RDSON (0.9Ω typical)

internal switch for maximum efficiency (85% typical).

Operating frequency is fixed at 1.25 MHz allowing the

use of small external components while still being

able to have low output voltage ripple. Soft-start can

be implemented using the shutdown pin with an

external RC circuit allowing the user to tailor the softstart

time to a specific application.

The LMR14206 is optimized for up to 600 mA load

current with a 0.765V nominal feedback voltage.

Additional features include: thermal shutdown, VIN

under-voltage lockout, and gate drive under-voltage

lockout. The LMR14206 is available in a low profile 6-

pin SOT package.