1 Features
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• 5-mm × 5.5-mm × 4-mm Enhanced HotRod™ QFN
package
– Industry’s smallest 36-V, 3-A footprint:
85-mm2 solution size (single-sided)
– Low EMI: meets CISPR11 radiated emissions
– Excellent thermal performance:
Up to 18 W output power at 85°C, no airflow
– Standard footprint: single large thermal pad and
all pins accessible from perimeter
• Input voltage range: 3.8 V to 36 V
• Output voltage range: 1 V to 7 V
• Efficiency up to 95%
• Power-good flag
• Precision enable
• Built-in hiccup-mode short-circuit protection,
overtemperature protection, start-up into pre-bias
output, soft start, and UVLO
• Operating IC junction range: –40°C to +125°C
• Operating ambient range: –40°C to +105°C
• Shock and vibration tested to Mil-STD-883D
• Pin compatible with: 4-A TPSM53604
and 2-A TPSM53602
• Download the EVM Design Files for fast board
design
• Create a custom design using the TPSM53603
with the WEBENCH® Power Designer

2 Applications
• General purpose wide VIN power supplies
• Factory automation and control
• Test and measurement
• Aerospace and defense
• Negative output voltage applications

3 Description
The TPSM53603 power module is a highly integrated
3-A power solution that combines a 36-V input,
step-down, DC/DC converter with power MOSFETs,
a shielded inductor, and passives in a thermallyenhanced
QFN package. The 5-mm x 5.5-mm x 4-
mm, 15-pin package uses Enhanced HotRod QFN
technology for improved thermal performance, small
footprint, and low EMI. The package footprint has all
pins accessible from the perimeter and a single large
thermal pad for simple layout and easy handling in
manufacturing.
The total solution requires as few as four
external components and eliminates the loop
compensation and magnetics part selection from
the design process. The full feature set includes
power good, programmable UVLO, prebias start-up,
overcurrent, and overtemperature protections, making
the TPSM53603 an excellent device for powering a
wide range of applications.