SP7655ER_TR

The SP7655ER_TR is one member of the SP7655 series.The SP7655 is a synchronous step-down switching regulator  optimized for high efficiency.The part is designed to be especially attractive for dual supply, 12V or 24V distributed power systems step down with 5V used to power the controller. This lower VCC voltage minimizes power dissipation in the part and is used to drive the top switch. The SP7655 is designed to provide a fully integrated buck regulator solution using a fixed 300kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal shutdown and output short circuit protection. The SP7655 is available in the space saving DFN package.

Features of the SP7655ER_TR are:(1)2.5V to 28V step down achieved using dual input; (2)output voltage down to 0.8V; (3)8A output capability; (4)built in low RDSON power switches (15 m typ); (5)highly integrated design, minimal components; (6)300 kHz fixed frequency operation; (7)UVLO detects both Vcc and Vin; (8)over temperature protection; (9)short circuit protection with auto-restart; (10)wide BW amp allows type II or III compensation; (11)programmable soft start; (12)fast transient response; (13)high efficiency: greater than 95% possible; (14)asynchronous start-up into a pre-charged output; (15)small 7mm x 4mm DFN package.

The absolute maximum ratings of the SP7655ER_TR can be summarized as:(1)Vcc:7V;(2)Vin:30V;(3)BST:35V;(4)power dissipation:internally limited;(5)lead temperature range:300;(6)storage temperature:-65 to 150.These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.Upon the detection of power (UVLO),thermal,or short-circuit faults, the SP7655 is forced into an idle state where the SS  and COMP pins are pulled low and both switches are held off. In the event of UVLO fault, the SP7655 remains in this idle state until the UVLO fault is removed.Upon the detection of a thermal or short-circuit fault, an internal 200ms  timer is activated. In the event of a short-circuit fault, a re-start is attempted immediately after the 200ms timeout expires.Whereas, when a thermal fault is detected the 200ms delay continuously recycles and a re-start cannot be attempted until the thermal fault is removed and the timer expires.