Smallest 12-V, 750-mA DC/DC power regulator

February 04, 2014 // By Graham Prophet
This “Simple Switcher” nano power regulator delivers 94.6% peak efficiency in 30-mm2 footprint

Texas Instruments’ smallest 12-V, 750-mA DC/DC power regulator in the Simple Switcher series uses tiny “nano” packaging to drive space-constrained and power dense applications. In a 2.56-mm 2 package, the 750-mA LMR22007 switching regulator features a low-current mode to maintain efficiency under light-load conditions. Control architecture provides fast transient performance and excellent regulation under varying input and output conditions. The LMR22007 delivers up to 750 mA of continuous load current with the addition of an adjustable input current limit, which protects the source supply during start-up by preventing excessive inrush currents. A complete 12-V, VIN to VOUT LMR22007 power supply design measures less than 30 mm 2 with as few as three external components.

Features include;

Operates over a 2.7 to 20V input voltage range, delivers an output voltage from 0.9 to 5.5V and survives VIN transients to 24V. Applications include single to multiple Li-ion cells, USB, 5-VIN and 12-VIN power supplies.

Its control architecture requires no loop compensation and provides ultra-fast transient response.

9-pin, 1.6-mm by 1.6-mm by 0.5-mm CSP package features strategic pin placement that eliminates micro vias and requires as few as two layers of printed circuit board.

Other features include internal compensation, internal soft start, input under-voltage protection, internal bootstrap capacitor and thermal shutdown.