SP7650ER_TR

The SP7650ER_TR is one member of the SP7650 series.The SP7650 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 SP7650 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 SP7650 is available in the space saving DFN package.

Features of the SP7650ER_TR are:(1)2.5V to 28V step down achieved using dual input; (2)output voltage down to 0.8V; (3)3A output capability; (4)built in low RDSON  power switches (40 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 SP7650ER_TR can be summarized as:(1)Vcc:7V;(2)Vin:30V;(3)BST:35A;(4)power dissipation:internally limited via OTP;(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.The SP7650 contains two unique control features that are very powerful in distributed applications.First, asynchronous driver control is enabled during start up, to prohibit the low side switch from pulling down the output until the high side switch has attempted to turn on. Second, a 100% duty cycle timeout ensures that the low side switch is periodically enhanced during extended periods at 100% duty cycle.