SGM41664

The SGM41664 is a programmable power management IC with I²C interface and integrated analog-to-digital converter (ADC) for applications that need backup power or energy storage capability such as solid-state drivers (SSD). For example, in an SSD the power is needed for a few milliseconds after an unexpected supply loss to complete any remaining write action. The integrated efficient bidirectional synchronous Buck converter/Boost charger is capable of charging storage capacitors to as high as 36V from a 2.8V to 16V input source. A quasi-fixed frequency and constant off time controller provides fast transient response and excellent converter stability. 

An integrated reverse blocking MOSFET (BLKFET) in the input allows blocking of energy leaking back to the removed source. The BLKFET has a programmable current limit in the range of 1.2A to 6.2A. BUS over-voltage protection threshold is selected based on the input source nominal voltage (3.3V, 5V or 12V) by strapping the OVP pin. The I²C interface is used to set the input current limit, switching frequency, Boost peak current limit and for measuring the storage capacitance and ESR. It is also used to monitor system variables and statuses, such as input voltage, input current, BUS voltage and storage voltage. 

The SGM41664 is available in a Green TQFN-4×4-25L package to allow compact layout design and better space saving for higher SSD memory capacity.