XL6019 220khz 60v 5a switching current boost / buck-boost / inverting dc/dc converter rev 1.0 www.xlsemi.com 1 features ? wide 5v to 40v input voltage range ? positive or negative output voltage programming with a single feedback pin ? current mode control provides excellent transient response ? 1.25v reference adjustable version ? fixed 220khz switching frequency ? maximum 5a switching current ? sw pin built in over voltage protection ? excellent line and load regulation ? en pin ttl shutdown capability ? internal optimize power mosfet ? high efficiency up to 94% ? built in frequency compensation ? built in soft-start function ? built in thermal shutdown function ? built in current limit function ? available in to263-5l package applications ? epc / notebook car adapter ? automotive and industrial boost / buck-boost / inverting converters ? portable electronic equipment general description the XL6019 regulator is a wide input range, current mode, dc/dc converter which is capable of generating either positive or negative output voltages. it can be configured as either a boost, flyback, sepic or inverting converter. the XL6019 built in n-channel power mosfet and fixed frequency oscillator, current-mode architecture results in stable operation over a wide range of supply and output voltages. the XL6019 regulator is special design for portable electronic equipment applications. figure1. package type of XL6019
XL6019 220khz 60v 5a switching current boost / buck-boost / inverting dc/dc converter rev 1.0 www.xlsemi.com 2 pin configurations figure2. pin configuration of XL6019 (top view) table 1 pin description pin number pin name description 1 gnd ground pin. 2 en enable pin. drive en pin low to turn off the device, drive it high to turn it on. floating is default high. 3 sw power switch output pin (sw). 4 vin supply voltage input pin. XL6019 operates from a 5v to 40v dc voltage. bypass vin to gnd with a suitably large capacitor to eliminate noise on the input. 5 fb feedback pin (fb). through an external resistor divider network, fb senses the output voltage and regulates it. the feedback threshold voltage is 1.25v.
XL6019 220khz 60v 5a switching current boost / buck-boost / inverting dc/dc converter rev 1.0 www.xlsemi.com 3 function block figure3. function block diagram of XL6019 typical application circuit 9 - $ 7 * / ( / % 7 * / 4 8 & |