LMR50410XFDBVR.A中文资料德州仪器数据手册PDF规格书

1 Features

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

• Configured for rugged industrial applications

– Input voltage range: 4 V to 36 V

– 1-A continuous output current

– Minimum switching-on time: 60 ns

– 700-kHz fixed switching frequency

– Junction temperature range: –40°C to 150°C

– 98% maximum duty cycle

– Monotonic start-up with pre-biased output

– Internal short circuit protection with hiccup

mode

– ±1% tolerance voltage reference

– Precision enable

• Small solution size and ease of use

– Integrated synchronous rectification

– Internal compensation for ease of use

– SOT-23-6 package

• Pin-to-pin compatible with LMR14010Aand

TPS560430

• Various options in pin-to-pin compatible package

– PFM and forced PWM (FPWM) options

• Create a custom design using the LMR50410 with

the WEBENCH® Power Designer

2 Applications

• Major appliances

• PLC, DCS, and PAC

• Smart meters

• General purpose wide VIN power supplies

3 Description

The LMR50410 is a wide-VIN, easy-to-use

synchronous buck converter capable of driving up to

1-A load current. With a wide input range of 4 V

to 36 V, the device is suitable for a wide range of

industrial applications for power conditioning from an

unregulated source.

The LMR50410 operates at 700-kHz switching

frequency to support use of relatively small inductors

for an optimized solution size. It has an PFM version

to realize high efficiency at light load and FPWM

version to achieve constant frequency, and small

output voltage ripple over the full load range. Softstart

and compensation circuits are implemented

internally which allows the device to be used with

minimum external components.

The device has built-in protection features, such as

cycle-by-cycle current limit, hiccup mode short-circuit

protection, and thermal shutdown in case of excessive

power dissipation. The LMR50410 is available in

SOT-23-6 package.