PM6680 Series

Dual synchronous step down controller with adjustable output voltages plus LDO

Catalog

Dual synchronous step down controller with adjustable output voltages plus LDO

Part	Voltage - Output [Max]	Voltage - Output [Min]	Voltage - Input [Max]	Voltage - Input [Min]	Package / Case	Applications	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Supplier Device Package	Supplier Device Package [x]	Supplier Device Package [y]	Number of Outputs
STMicroelectronics PM6680TR	5.5 V	0.9 V	28 V	6 V	32-VFQFN Exposed Pad	Controller Notebook Power System	0 °C	85 °C	Surface Mount	32-VFQFPN	5	5	2
STMicroelectronics PM6680ATR	5 V	0.9 V	36 V	6 V	32-VFQFN Exposed Pad	Controller Embedded Computer System	-40 C	125 °C	Surface Mount	32-VFQFPN	5	5	2
STMicroelectronics PM6680A	5 V	0.9 V	36 V	6 V	32-VFQFN Exposed Pad	Controller Embedded Computer System	-40 C	125 °C	Surface Mount	32-VFQFPN	5	5	2

Catalog

Dual synchronous step down controller with adjustable output voltages plus LDO

Description

PM6680A is a dual step-down controller specifically designed to provide extremely high efficiency conversion, with losses current sensing technique. The constant on-time architecture assures fast load transient response and the embedded voltage feed-forward provides nearly constant switching frequency operation. An embedded integrator control loop compensates the DC voltage error due to the output ripple. Pulse skipping technique increases efficiency at very light load. Moreover a minimum switching frequency of 33kHz is selectable to avoid audio noise issues. The PM6680A provides a selectable switching frequency, allowing three different values of switching frequencies for the two operation of the two switching sections. The output voltages OUT1 and OUT2 can be adjusted from 0.9V to 5V and from 0.9V to 3.3V respectively.