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Buck converters (integrated switch)

LMR14006

ACTIVE

SIMPLE SWITCHER® 4-V to 40-V, 600-mA step-down converter with Low Iq

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Data sheet

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LMR14006

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 4 Vin (max) (V) 40 Vout (min) (V) 0.8 Vout (max) (V) 30 Iout (max) (A) 0.6 Iq (typ) (mA) 0.028 Switching frequency (min) (kHz) 1100 Switching frequency (max) (kHz) 2100 Features Enable, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, UVLO adjustable Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 97 Type Converter
Vin (min) (V) 4 Vin (max) (V) 40 Vout (min) (V) 0.8 Vout (max) (V) 30 Iout (max) (A) 0.6 Iq (typ) (mA) 0.028 Switching frequency (min) (kHz) 1100 Switching frequency (max) (kHz) 2100 Features Enable, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, UVLO adjustable Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 97 Type Converter
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • Ultra Low 28 µA Standby Current in Sleep Mode
  • Input Voltage Range 4 V to 40 V
  • 1 µA Shutdown Current
  • High Duty Cycle Operation Supported
  • Output Current up to 600 mA
  • 1.1 MHz and 2.1 MHz Switching Frequency
  • Internal Compensation
  • High Voltage Enable Input
  • Internal Soft Start
  • Over Current Protection
  • Over Temperature Protection
  • Small Overall Solution Size (TSOT-6L Package)
  • Ultra Low 28 µA Standby Current in Sleep Mode
  • Input Voltage Range 4 V to 40 V
  • 1 µA Shutdown Current
  • High Duty Cycle Operation Supported
  • Output Current up to 600 mA
  • 1.1 MHz and 2.1 MHz Switching Frequency
  • Internal Compensation
  • High Voltage Enable Input
  • Internal Soft Start
  • Over Current Protection
  • Over Temperature Protection
  • Small Overall Solution Size (TSOT-6L Package)

The LMR14006 is a PWM DC/DC buck (step-down) regulator. With a wide input range of 4 V-40 V, it is suitable for a wide range of application from industrial to automotive for power conditioning from an unregulated source. The regulator’s standby current is 28 µA in sleep mode, which is suitable for battery operating systems. An ultra low 1 µA current can further prolong battery life in shutdown mode. Operating frequency is fixed at 1.1 MHz (X version) and 2.1 MHz (Y version) allowing the use of small external components while still being able to have low output ripple voltage. Soft-start and compensation circuits are implemented internally, and these allow the device to be used with minimized external components. The LMR14006 is optimized for up to 600 mA load current which has a 0.765 V typical 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 LMR14006 is available in a low profile TSOT-6L package.

The LMR14006 is a PWM DC/DC buck (step-down) regulator. With a wide input range of 4 V-40 V, it is suitable for a wide range of application from industrial to automotive for power conditioning from an unregulated source. The regulator’s standby current is 28 µA in sleep mode, which is suitable for battery operating systems. An ultra low 1 µA current can further prolong battery life in shutdown mode. Operating frequency is fixed at 1.1 MHz (X version) and 2.1 MHz (Y version) allowing the use of small external components while still being able to have low output ripple voltage. Soft-start and compensation circuits are implemented internally, and these allow the device to be used with minimized external components. The LMR14006 is optimized for up to 600 mA load current which has a 0.765 V typical 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 LMR14006 is available in a low profile TSOT-6L package.
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Technical documentation

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Type Title Date
* Data sheet LMR14006 SIMPLE SWITCHER 40 V 600 mA Buck Regulator With High Efficiency Sleep Mode datasheet (Rev. B) PDF | HTML 12 Nov 2014
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note How to Evaluate Junction Temperature Properly with Thermal Metrics (Rev. B) 29 Mar 2019
Application note How to Evaluate the Maximum Inductor in Internal Compensation PCM Buck Converter 20 Sep 2017
Technical article Automotive LED blinkers made SIMPLE 04 Sep 2015
Technical article Cap-drop offline power supply for light-load applications made SIMPLE 29 Jul 2015
EVM User's guide LMR14003Y/6YEVM Evaluation Board 19 Aug 2013
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 24 Apr 2013
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23 Apr 2013
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 23 Apr 2013
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12 Jul 2005
Application note AN-643 EMI/RFI Board Design (Rev. B) 03 May 2004

Design & development

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Evaluation board

LMR14006YEVM — 4V to 40V Input, 5.0V Output at 600mA Step-Down Converter Evaluation Module

The LMR14006YEVM is a fully assembled and tested circuit for evaluating the LMR14006Y Step-Down Converter. The LMR14006YEVM operates from 4V to 40V input (12V nominal) and provides a 5.0V output at 600mA. The board also has jumper connector to enable or disable the converter operation.

User guide: PDF
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Simulation model

LMR14006X PSpice Transient Model

SNVM536.ZIP (48 KB) - PSpice Model
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Simulation model

LMR14006X Unencrypted PSpice Transient Model

SNVM974.ZIP (7 KB) - PSpice Model
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Simulation model

LMR14006Y PSpice Transient Model

SNVM535.ZIP (49 KB) - PSpice Model
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Simulation model

LMR14006Y Unencrypted PSpice Transient Model

SNVM975.ZIP (6 KB) - PSpice Model
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Simulation tool

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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