LMR14203XMK/NOPB

text.skipToContent text.skipToNavigation

LMR14203XMK/NOPB

4.5V to 42V, 0.3A Step-Down DC/DC Switching Regulator in SOT-23

Packaging

Package | PIN: DDC | 6
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $2.13
10-24 $1.91
25-99 $1.77
100-249 $1.54
250-499 $1.43
500-749 $1.20
750-999 $0.98
1000+ $0.90

Features

  • Input Voltage Range of 4.5V to 42V
  • Output Voltage Range of 0.765V to 34V
  • Output Current up to 0.3A
  • 1.25 MHz Switching Frequency
  • Low Shutdown Iq, 16 µA Typical
  • Short Circuit Protected
  • Internally Compensated
  • Soft-Start Function
  • Thin SOT-23-6 Package (2.97 x 1.65 x 1mm)
  • Fully Enabled for WEBENCH® Power Designer

Performance Benefits

  • Tight Accuracy for Powering Digital ICs
  • Extremely Easy to Use
  • Tiny Overall Solution Reduces System Cost

All trademarks are the property of their respective owners.

Texas Instruments  LMR14203XMK/NOPB

The LMR14203 is a PWM DC/DC buck (step-down) regulator. With a wide input range from 4.5V-42V, it is 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 soft-start time to a specific application.

The LMR14203 is optimized for up to 300 mA load current.

Additional features include: thermal shutdown, VIN under-voltage lockout, and gate drive under-voltage lockout. The LMR14203 is available in a low profile SOT-6L package.