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.