1 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)

2 Applications

• Industrial Distributed Power Systems
• Automotive
• Battery Powered Equipment
• Portable Handheld Instruments
• Portable Media Players

3 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.

1. For all available packages, see the orderable addendum at the end of the datasheet.

Figure 1. Typical Application Schematic

4 Revision History

Changes from * Revision (November 2013) to A Revision

• Deleted the other part number LMR14003 from the rest of the document Go
• Added Device Information and Handling Rating tables, Feature Description, Application and Implementation, , Layout, Device and Documentation Support, and Mechanical, Packaging, and Orderable Information sections; moved some curves to Application Curves sectionGo
• Changed from 2kV to 1kVGo

Changes from A Revision (September 2014) to B Revision

• Changed from -0.3 to -1Go
• Changed from -0.3 to -1Go