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xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 1 features n wide 10v to 65v operating input range n output adjustable from 1.25v to 50v n maximum duty cycle 100% n minimum drop out 0.3v n fixed 180khz switching frequency n maximum 0.8a switching current n internal optimize power mosfet n high efficiency n excellent line and load regulation n built in thermal shutdown function n built in current limit function n built in output short protection function n available in sop8l package applications n car charger n battery charger n ebike controller power supply n portable instrument power supply n telecom / networking equipment general description the XL7007 is a 180khz fixed frequency pwm buck (step-down) dc/dc converter, capable of driving a 0.8a load with high efficiency, low ripple and excellent line and load regulation. requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator. the pwm control circuit is able to adjust the duty ratio linearly from 0 to 100%. an over current protection function is built inside. when short protection function happens, the operation frequency will be reduced from 180khz to 36khz. an internal compensation block is built in to minimize external component count. figure1. package type of XL7007
xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 2 pin configurations figure2. pin configuration of XL7007 (top view) table 1 pin description pin number pin name description 1 nc no connected, hold floating. 2 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. 3 vc internal voltage regulator bypass capacity. in typical system application, the vc pin connect a 1uf capacity to vin. 4 vin supply voltage input pin. XL7007 operates from a 10v to 65v dc voltage. bypass vin to gnd with a suitably large capacitor to eliminate noise on the input. 5,6 sw power switch output pin (sw). sw is the switch node that supplies power to the output. 7,8 gnd ground pin. care must be taken in layout. this pin should be placed outside of the schottky diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL7007.
xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 3 function block figure3. function block diagram of XL7007 typical application circuit figure4. XL7007 typical application circuit (vin=16v~65v, vout=15v/0.5a)
xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 4 ordering information order information marking id package type packing type supplied as XL7007e1 XL7007e1 sop-8l 2500 units on tape & reel xlsemi pb-free products, as designated with e1 suffix in the par number, are rohs compliant. absolute maximum ratings note1 parameter symbol value unit input voltage vin -0.3 to 70 v feedback pin voltage v fb -0.3 to vin v output switch pin voltage v output -0.3 to vin v power dissipation p d internally limited mw thermal resistance (sop8l) (junction to ambient, no heatsink, free air) r ja 100 o c/w operating junction temperature t j -40 to 125 o c storage temperature t stg -65 to 150 o c lead temperature (soldering, 10 sec) t lead 260 o c esd (hbm) >2000 v note1: stresses greater than those listed under maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability.
xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 5 XL7007 electrical characteristics t a = 25 ;unless otherwise specified. symbol parameter test condition min. typ. max. unit system parameters test circuit figure4 vfb feedback voltage vin = 16v to 65v, vout=15v iload=0.1a to 0.4a 1.225 1.25 1.275 v efficiency ? vin=36v ,vout=15v iout=0.5a - 90 - % efficiency ? vin=48v ,vout=15v iout=0.4a - 86 - % electrical characteristics (dc parameters) vin = 48v, gnd=0v, vin & gnd parallel connect a 33uf/100v capacitor; iout=100ma, t a = 25 ; the others floating unless otherwise specified. parameters symbol test condition min. typ. max. unit input operation voltage vin 10 65 v quiescent supply current i q v fb =vin 3 5 ma oscillator frequency fosc 144 180 216 khz output short frequency fosp 36 khz switch current limit i l v fb =0 1 a max. duty cycle d max v fb =0v 100 % output power pmos rdson v fb =0v, vin=48v, i sw =0.8a 180 210 mohm
xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 6 typical system application (recommend output current safe work range) 10 15 20 25 30 35 40 45 50 55 60 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 recommend output current safe work range output current(a) input voltage(v) vout=5v 10 15 20 25 30 35 40 45 50 55 60 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 recommend output current safe work range output current(a) input voltage(v) vout=10v figure5.max output current(vout=5v) figure6.max output current(vout=10v) 10 15 20 25 30 35 40 45 50 55 60 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 recommend output current safe work range output current(a) input voltage(v) vout=15v figure7.max output current(vout=15v)
xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 7 typical system application (vout=15v/0.5a) figure8. XL7007 system parameters test circuit (vin=16v~60v, vout=15v/0.5a) 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 efficiency vs load current efficiency(%) load current(a) vin=24v,vout=15v,iout=0.1a~0.5a vin=36v,vout=15v,iout=0.1a~0.5a vin=48v,vout=15v,iout=0.1a~0.4a vin=60v,vout=15v,iout=0.1a~0.4a figure9. XL7007 system efficiency curve
xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 8 typical system application (vout=5v/0.8a) figure10. XL7007 system parameters test circuit (vin=10v~60v, vout=5v/0.8a) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 30 35 40 45 50 55 60 65 70 75 80 85 90 95 efficiency vs load current efficiency(%) load current(a) vin=12v,vout=5v,iout=0.1a~0.8a vin=24v,vout=5v,iout=0.1a~0.8a vin=36v,vout=5v,iout=0.1a~0.7a vin=48v,vout=5v,iout=0.1a~0.6a vin=60v,vout=5v,iout=0.1a~0.5a figure11. XL7007 system efficiency curve
xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 9 typical system application (vout=10v/0.7a) figure12. XL7007 system parameters test circuit (vin=12v~60v, vout=10v/0.7a) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 efficiency vs load current efficiency(%) load current(a) vin=12v,vout=10v,iout=0.1a~0.7a vin=24v,vout=10v,iout=0.1a~0.7a vin=36v,vout=10v,iout=0.1a~0.7a vin=48v,vout=10v,iout=0.1a~0.6a vin=60v,vout=10v,iout=0.1a~0.5a figure13. XL7007 system efficiency curve
xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 10 package information sop8 package mechanical dimensions
xlsemi datasheet 0.8a 180khz 65v buck dc to dc converter XL7007 rev 1.1 www.xlsemi.com 11 important notice xlsemi reserve the right to make modifications, enhancements, improvements, corrections or other changes without notice at any time. xlsemi does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. xlsemi assumes no liability for applications assistance or the design of buyers products. buyers are responsible for their products and applications using xlsemi components. to minimize the risks associated with buyers products and applications, buyers should provide adequate design and operating safeguards. xlsemi warrants performance of its products to the specifications applicable at the time of sale, in accordance with the warranty in xlsemi s terms and conditions of sale of semiconductor products. testing and other quality control techniques are used to the extent xlsemi deems necessary to support this warranty. except where mandated by applicable law, testing of all parameters of each component is not necessarily performed. for the latest product information, go to www.xlsemi.com .

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