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.