LMR14006

ACTIVE

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

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Product details

Parameters

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, UVLO Adjustable, Soft Start Fixed Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6 open-in-new Find other Buck converters (integrated switch)

Features

  • 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)
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Description

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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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS560430 ACTIVE SIMPLE SWITCHER® 36-V, 600-mA Buck Regulator With High-Efficiency Sleep Mode Next-generation 36-V, 600-mA buck regulator with high-efficiency sleep mode.

Technical documentation

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

Design & development

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Hardware development

EVALUATION BOARDS Download
document-generic User guide
20
Description

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.

Features
  • Input range: 4V to 40V
  •  Output: 5.0V
  •  Maximum load current: 600mA
  •  Switching frequency: 2.1MHz
  •  Board size: 49x52mm

Design tools & simulation

SIMULATION MODELS Download
SNVM535.ZIP (49 KB) - PSpice Model
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SNVM975.ZIP (6 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
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CAD/CAE symbols

Package Pins Download
SOT-23-THIN (DDC) 6 View options

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