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3V to 20V, 1A Step-Down DC/DC Switching Regulator in SOT-23


Package | PIN: DDC | 6
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $2.42
10-24 $2.18
25-99 $2.03
100-249 $1.78
250-499 $1.67
500-749 $1.41
750-999 $1.19
1000+ $1.14


  • Input voltage range of 3V to 20V
  • Output voltage range of 0.8V to 17V
  • Output current up to 1A
  • 1.6MHz (LMR12010X) and 3 MHz (LMR12010Y) switching frequencies
  • Low shutdown Iq, 30 nA typical
  • Internal soft-start
  • Internally compensated
  • Current-Mode PWM operation
  • Thermal shutdown
  • Thin SOT23-6 package (2.97 x 1.65 x 1mm)
  • Fully enabled for WEBENCH® Power Designer

  • Performance Benefits

  • Extremely easy to use
  • Tiny overall solution reduces system cost

  • Texas Instruments  LMR12010YMKE/NOPB

    The LMR12010 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 6-pin Thin SOT23 package. It provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

    With a minimum of external components and online design support through WEBENCH® , the LMR12010 is easy to use. The ability to drive 1A loads with an internal 300mΩ NMOS switch using state-of-the-art 0.5µm BiCMOS technology results in the best power density available. The world class control circuitry allows for on-times as low as 13ns, thus supporting exceptionally high frequency conversion over the entire 3V to 20V input operating range down to the minimum output voltage of 0.8V. Switching frequency is internally set to 1.6 MHz (LMR12010X) or 3 MHz (LMR12010Y), allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 30nA. The LMR12010 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output over-voltage protection.