LMR51460FSQDRRRQ1 TI Chips LMR51460-Q1 36V 6A Automotive Synchronous Buck Converter

TI Chips LMR51460FSQDRRRQ1 LMR51460-Q1 36V, 6A, Automotive, Synchronous Buck Converter

Features
• AEC-Q100 qualified for automotive applications
– Device temperature grade 1: –40°C to +125°C 
ambient operating temperature
• Functional Safety-Capable
– Documentation available to aid functional safety 
system design
• Supports automotive system requirements:
– Wide input voltage range: 4V to 36V
– 6A continuous output current
– ±1.0% tolerance voltage reference at room 
temperature
– Minimum switching-on time: 75ns (typical)
– Low quiescent current: 25µA
– Adjustable frequency: 200kHz to 1MHz
– Frequency spread spectrum
– Protection features:
• Precision enable input
• Open-drain PGOOD
• VIN undervoltage lockout (UVLO)
• Cycle-by-cycle current limiting
• Short-circuit protection with hiccup mode
• Thermal shutdown
• Small design size and ease of use
– Integrated synchronous rectification
– Internal compensation for ease of use
– WSON-12 package
• PFM and FPWM options in pin-to-pin compatible 
package
• Create a custom design using the LMR51460-Q1 
with the WEBENCH® Power Designer

Applications
• Automotive ADAS and body electronics
• Automotive infotainment and cluster: head unit, 
media hub, USB charge, display

Description
The LMR51460-Q1 is a wide-VIN, easy-to-use, 
synchronous buck converter capable of driving up 
to 6A load current. With a wide input range of 4V 
to 36V, the device is designed for a wide range of 
industrial applications for power conditioning from an 
unregulated source.
The LMR51460-Q1 features adjustable switching 
frequency from 200kHz to 1MHz with an external 
resistor, which provides the flexibility to optimize either 
efficiency or external component size. The device 
has pulse frequency modulation (PFM version) to 
realize high efficiency at light load, and forced pulse 
width modulation (FPWM version) to achieve constant 
frequency, and small output voltage ripple over the full 
load range. Soft-start 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 LMR51460-Q1 is available in a 
WSON-12 package.