MIC28517T-E/PHA [Microchip]

The MIC28517/16 is a wide input range (4.5V-70V) integrated FET, 8A switching regulators. The MIC28517/16 is leveraging the latest enhanced high voltage COT controllers co-packaged with a pair of low FOM power trench N-Channel FETS with improved avalanche rating. The output voltage is adjustable down to 0.6V with +/- 1% accuracy. The MIC28517 offers a 'Mode" select pin allowing the user to choose in between Hyper Light load and Hyper Speed control operations. The Hyper Speed Control proprietary architecture allows for ultra-fast transient response while reducing the output capacitance. The MIC28516 offers the option of external "soft start" feature in place of "Mode" select pin allowing the user the flexibility to adjust soft start using an external capacitor. The MIC28517/16 offers a full suite of protection features to ensure safe operation of the device during fault conditions. These include UVLO, External soft start to reduce current inrush, hiccup current limit short circuit protection and thermal shutdown.    
 
The MCP28517/16 is available in a 38 pin 6mm x 6mm PQFN with a junction operating range from –40°C to +125°C.

• •Input voltage range: 4.5V to 70V
• •Adjustable output from 0.6V to 32V (Limited by duty cycle)
• •High Current capability of 8A
• •Adaptive Constant On Time Control
• •0.6V Internal reference
• •Adjustable 270 KHZ to 800KHZ switching Frequency
• •High Voltage Internal LDO for single supply operation
• •Operation with both internal and external VDD
• •Output current up to 8A
• •Supports start up to pre-bias output
• •Internal compensator for tight output regulation
• •Enable function for low stand-by current
• •External programmable soft start to reduce inrush (MIC28516 Only)
• •MODE select pin to enable light load operation (MIC28517 Only)
• •Programmable current limit and hiccup short circuit protection
• •Thermal shut down with hysteresis
• •CCM only operation for reduced noise at low output current (MIC28516 Only)
• •High performance low profile lead frame based package
• •Next generation Power Trench MOSFETS for clean switching and reduced ringing
• •Compact size – 6 X 6 mm PQFN
• •–40°C to +125°C junction temperature range