JAJSIO5B July 2019 – February 2020 LMR36506-Q1
ADVANCE INFORMATION for pre-production products; subject to change without notice.
The LMR36506-Q1 is a wide input, low-quiescent current, high-performance regulator that can operate over a wide range of switching frequencies and duty ratios. If the minimum ON-time or OFF-time cannot support the desired duty ratio, the switching frequency gets reduced automatically, maintaining the output voltage regulation. With the right internal loop compensation the system design time with the LMR36506-Q1 reduces significantly with minimal external components compared to other externally compensated buck regulators.
The LMR36506-Q1 is designed to minimize end-product component cost and solution size while operating in all demanding automotive environments. The LMR36506-Q1 can be set to operate from 200 kHz through 2.2 MHz with the correct resistor selection from RT pin to ground. In addition, the PGOOD output feature with built-in delayed release allows the elimination of the reset supervisor in many applications.
The LMR36506-Q1 is designed to reduce EMI/EMC emissions. It includes a pseudo-random spread spectrum scheme, has a low pin inductance flip chip on the lead (HotRod) package, and is available with MODE/SYNC, which can be synchronized to an external clock when needed. Together, these features eliminate the need for any common-mode choke, shielding, and input filter inductor, greatly reducing the complexities and cost of the EMI/EMC mitigation measures.
To be reliably used in all environments, the LMR36506-Q1 has a package designed with enlarged corner terminals for improved BLR performance over varied PCB thickness. In addition, the LMR36506-Q1 in a 2-mm x 2-mm QFN package comes with wettable flanks as well, allowing for quick optical inspection of all solder joints.