LMZ31704 SIMPLE SWITCHER® Power Module

By Texas Instruments 90

LMZ31704 SIMPLE SWITCHER® Power Module

Texas Instruments' LMZ31704 SIMPLE SWITCHER power module is an easy-to-use, integrated power solution that combines a 4 Amp DC/DC converter with power MOSFETs, a shielded inductor, and passives into a low-profile, QFN package. This total power solution allows as few as three external components, and eliminates the loop compensation and magnetics part selection process.

The 10 x 10 x 4.3 mm QFN package is easy to solder onto a printed circuit board and allows a compact point-of-load design. It achieves greater than 95% efficiency and has excellent power dissipation capability with a thermal impedance of 13.3°C/W. The LMZ31704 offers the flexibility and the feature-set of a discrete point-of-load design and is ideal for powering a wide range of ICs and systems. Advanced packaging technology affords a robust and reliable power solution compatible with standard QFN mounting and testing techniques.


  • Complete integrated power solution allows small footprint, low-profile design
  • 10 x 10 x 4.3 mm package (pin compatible with LMZ31710 and LMZ31707)
  • Efficiencies up to 95%
  • Eco-mode/light load efficiency (LLE)
  • Wide-output voltage adjust 0.6 to 5.5 V, with 1% reference accuracy
  • Supports parallel operation for higher current
  • Optional split power rail allows input voltages down to 2.95 V
  • Adjustable switching frequency (200 kHz to 1.2 MHz)
  • Synchronizes to an external clock
  • Provides 180° out-of-phase clock signal