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TPSM53603
  • TPSM53603
  • TPSM53603

TPSM53603

ACTIVE

36-V, 3-A step-down power module in small 5.5 x 5 x 4-mm Enhanced HotRod™ QFN with simple footprint

Texas Instruments TPSM53603 Product Info

1 April 2026 5

Parameters

Rating

Catalog

Topology

Buck, Inverting Buck-Boost, Synchronous Buck

Iout (max) (A)

3

Vin (max) (V)

36

Vin (min) (V)

3.8

Vout (max) (V)

7

Vout (min) (V)

1

Features

EMI Tested, Enable, Light-load efficiency, Power good

EMI features

Low parasitic Hotrod packaging

Operating temperature range (°C)

-40 to 125

TI functional safety category

Functional Safety-Capable

Type

Module

Duty cycle (max) (%)

98

Control mode

current mode

Switching frequency (min) (kHz)

1400

Switching frequency (max) (kHz)

1400

Package

B3QFN (RDA)-15-27.5 mm² 5.5 x 5

Features

  • Functional Safety-Capable
  • 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
  • Functional Safety-Capable
  • 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

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 thermally-enhanced 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.

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