Synchronous step-down converter for applications from industrial to automotive

The Texas Instruments LMR23630 SIMPLE SWITCHER is an easy to use 36V, 3A synchronous step-down regulator. With a wide input range from 4.5V to 36V, it is suitable for various applications from industrial to automotive for power conditioning from unregulated sources. Peak current mode control is employed to achieve simple control loop compensation and cycle-by-cycle current limiting. A quiescent current of 75µA makes it suitable for battery powered systems. An ultra-low 2µA shutdown current can further prolong battery life. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimises the external components. The device has option for constant frequency FPWM mode to achieve small output voltage ripple at light load. An extended family is available in 1A (LMR23610) and 2.5A (LMR23625) load current options in pin-to-pin compatible package which allows simple, optimum PCB layout. A precision enable input allows simplification of regulator control and system power sequencing. Protection features include cycle-by-cycle current limit, hiccup mode short circuit protection and thermal shutdown due to excessive power dissipation.