LMR14010A 4-V to 40-V, 1-A Step-Down Converter With High Efficiency Eco-Mode | TI.com

LMR14010A (ACTIVE) 4-V to 40-V, 1-A Step-Down Converter With High Efficiency Eco-Mode



The LMR14010A is a PWM DC-to-DC buck (step-down) regulator. With a wide input range from 4 V to 40 V, it is suitable for a wide range of applications from industrial to automotive. An ultra-low 1-µA shutdown current prolongs battery life. Operating frequency is fixed at 0.7 MHz, allowing the use of small external components while minimizing output ripple voltage. Soft-start and compensation circuits are implemented internally, limiting the number of external components.

The LMR14010A is optimized for up to 1-A load current. It has a 0.765-V nominal feedback voltage.

The device has built-in protection features such as pulse-by-pulse current limit, thermal sensing and shutdown due to excessive power dissipation. The LMR14010A is available in a low profile TSOT-6L package (2.9 mm × 1.6 mm × 0.85 mm).


  • Input Voltage Range: 4 V to 40 V with Transient Protection to 45 V
  • 0.7-MHz Switching Frequency
  • Ultra-High Efficiency at Light Load with Eco-mode™
  • Low Dropout Operation
  • Output Current up to 1 A
  • Precision Enable Input
  • Overcurrent Protection
  • Internal Compensation
  • Internal Soft-Start
  • Small Overall Solution Size (TSOT-6L Package)
  • Create a Custom Design Using the LMR14010A With the WEBENCH® Power Designer

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WEBENCH® Designer LMR14010A

  Min   Max Range
Vin  V 4.0 to 40.0V
Vout  V 0.765 to 38.4V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 150°C


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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
LMR14010A Order now 4     40     0.8     30     1     1     700     700     0.03     Enable
Light Load Efficiency
Over Current Protection
Pre-Bias Start-Up
UVLO Fixed
Soft Start Fixed    
Current Mode     96     -40 to 125     Catalog     SOT-23-THIN | 6     Converter     6SOT-23-THIN: 8 mm2: 2.8 x 2.9 (SOT-23-THIN | 6)