1 Features
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• Configured for rugged industrial applications
– Input voltage range: 3.8 V to 36 V
– Output voltage range: 1 V to 24 V
– Output current: 3 A
– 75-mΩ/50-mΩ RDS-ON power MOSFETs
– Peak-current-mode control
– Short minimum on-time of 68 ns
– Frequency: 400 kHz, 1.4 MHz, 2.1 MHz
– Junction temperature range –40°C to +125°C
– Low EMI and low switching noise
– Integrated compensation network
• Low EMI and switching noise
– HotRod™ package
– Parallel input current paths
• High power conversion at all loads
– Peak efficiency > 95%
– Low operating quiescent current of 25 μA
• Flexible system interface
– Power-good flag and precision enable
• Use TPSM53603 module for faster time to market
• Create a custom design using the LMR33630 with
the WEBENCH® Power Designer

2 Applications
• Motor drive systems: drones, AC inverters,
VF drives, servos
• Factory and building automation systems:
PLC CPU, HVAC control, elevator control
• General purpose wide VIN powers

3 Description
The LMR33630 SIMPLE SWITCHER® regulator is
an easy-to-use, synchronous, step-down DC/DC
converter that delivers best-in-class efficiency for
rugged industrial applications. The LMR33630 drives
up to 3 A of load current from an input of up
to 36 V. The LMR33630 provides high light load
efficiency and output accuracy in a very small
solution size. Features such as a power-good flag
and precision enable provide both flexible and easyto-
use solutions for a wide range of applications.
The LMR33630 automatically folds back frequency at
light load to improve efficiency. Integration eliminates
most external components and provides a pinout
designed for simple PCB layout. Protection features
include thermal shutdown, input undervoltage lockout,
cycle-by-cycle current limit, and hiccup short-circuit
protection. The LMR33630 is available in an 8-pin
HSOIC package and in a 12-pin 3 mm × 2 mm
next generation VQFN package with wettable flanks.
This device is also available in an AEC-Q100-qualified
version.