1 Features
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• Designed for reliable and rugged applications
– Input transient protection up to 66 V
– Junction temperature range –55°C to +150°C
– 0.4-V dropout with 1.5-A load (typical)
• Suited for scalable industrial power supplies
– Pin compatible with:
• LMR36006 (60 V, 0.6 A)
• LMR33620/LMR33630 (36 V, 2 A, or 3 A)
– 400-kHz, 1-MHz frequency options
• Small, 2-mm × 3-mm HotRod™ package
• Low power dissipation across load spectrum
– 90% efficiency at 400 kHz (24 VIN, 5 VOUT, 1 A)
– 93% efficiency at 400 kHz (12 VIN, 5 VOUT, 1 A)
– Increased light load efficiency in PFM
– Low operating quiescent current of 26 μA
• Solution with few external components
• Optimized for ultra low EMI requirements
– Meets CISPR25 class 5 standard
– HotRod package minimizes switch node ringing
– Parallel input path minimizes parasitic
inductance
– Spread spectrum reduces peak emissions
• Create a custom design using the LMR36015S
with the WEBENCH® Power Designer

2 Applications
• Aerospace and defense
• Field transmitters and sensors, PLC modules
• Thermostats, video surveillance, HVAC systems
• AC and servo drives, rotary encoders
• Industrial transport, asset tracking

3 Description
The LMR36015S regulator is an easy-to-use,
synchronous, step-down DC/DC converter. With
integrated high-side and low-side power MOSFETs,
up to 1.5 A of output current is delivered over
a wide input voltage range of 4.2 V to 60 V.
Tolerance goes up to 66 V. The transient tolerance
reduces the necessary design effort to protect
against overvoltages and meets the surge immunity
requirements of IEC 61000-4-5.
The LMR36015S uses peak-current-mode control
to provide optimal efficiency and output voltage
accuracy. Load transient performance is improved
with FPWM feature in the 1-MHz regulator. Precision
enable gives flexibility by enabling a direct connection
to the wide input voltage or precise control over
device start-up and shutdown. The power-good flag,
with built-in filtering and delay, offers a true indication
of system status eliminating the requirement for an
external supervisor.