1 Features

1• 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.