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?2003 fairchild semiconductor corporation www.fairchildsemi.com rev. 1.0.0 features ? high efficiency single stage power conversion ? wide input voltage range 6v to 25v ? back light lamp ballast and soft dimming ? few external components ? precision voltage reference trimmed to 2% ?soft start ? pwm and pfm control ? analog, burst and mixed dimming function ? allows all n-channel mosfet drive ? double pulse suppression logic ? open lamp detection ? output short circuit protection ? open lamp regulation ? 20 pin ssop description the fan7300 provides all the control functions for a series parallel resonant converter and also contains a pulse width modulation (pwm) controller to develop a supply voltage. typical operating frequency range is between 30khz and 100khz depending on the ccfl and the transformer's characteristics. 20-ssop fan7300 fan7300 fan7300 fan7300 lcd back light inverter drive ic lcd back light inverter drive ic lcd back light inverter drive ic lcd back light inverter drive ic
fan7300 2 internal block diagram dimming control and mode selection analog burst mixed 50k 50k dim - + + olr - + s_s ea_out va + - vm2 vmo multiplier gain buffer vm1 k low side gate driver clock main control oscillator r s - + q q max. 1.75v min. 0.25v uvlo - + vcc internal bias 1.5vref vz 5.4v ena 8v out_l gnd cpump ct rt - + - + - + - + olp scp rs q - + bct vb va current generator e/a controller error amp. comp3 comp1 comp2 comp4 comp5 comp6 comp7 3v 1.5v 1.5v v3 3v 3v 1.5v 3.7v vz 2ua ea_in vs out_h dim_mode vz 3.7v max. 1.75v min. 0.25v high side gate driver vz 8ua v3 3v
fan7300 3 pin assignments pin definitions no name function description no name function description 1 olp open lamp protection 11 out_h high side gate drive output 2 rt timing resistor 12 cpump charge pump 3 ct timing capacitor 13 vz zener voltage 4 bct burst dimming timing capacitor 14 olr open lamp regulation 5 s_s soft start 15 scp short circuit protection 6 ena enable input 16 ea_in error amplifier input 7 vs voltage sensing 17 ea_out error amplifier output 8 vcc supply voltage 18 dim dimming input 9 gnd ground 19 dim_mode dimming mode selection 10 out_l low side gate drive output 20 v3 3v reference voltage fan7300 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 olp rt ct bct scp ena vs vcc gnd out_l v3 dim_mode dim ea_out ea_in olr vz cpump out_h s_s
fan7300 4 absolute maximum ratings vcc=10v, for typical values ta=25 c, for min/max values ta is the operating ambient temperature range with -25 c ta 85 c and 6v vcc 25v, unless otherwise specified. note: 1. thermal resistance test board size: 76.2mm * 114.3mm * 1.6mm(1s0p) jedec standard: jesd51-3, jesd51-7 2. assume no ambient airflow characteristics symbol value unit supply voltage v cc 6 ~ 25 v operating temperature range topr -25 ~ 85 c storage temperature range tstg -65 ~ 150 c thermal resistance junction-air (note1,2) r ja 112 c/w power dissipation pd 1.1 w
fan7300 5 electrical characteristics vcc=10v, for typical values ta=25 c, for min/max values ta is the operating ambient temperature range with -25 c ta 85 c and 6v vcc 25v, unless otherwise specified. characteristics symbol test condition min. typ. max. unit reference section reference voltage vref - 1.46 1.5 1.54 v line regulation ? vref 8 v cc 20v - 2 25 mv 3v regulation voltage v3 - 2.86 2.96 3.06 v oscillator section(main) oscillation frequency fosc ct = 330pf, rt = 14k 75 95 115 khz ct high voltage vcth - - 1.75 - v ct low voltage vbct1 - - 0.25 - v oscillator section(burst) oscillation frequency fosc ctb = 180nf 125 170 205 hz bct high voltage vbcth - - 1.75 - v bct low voltage vbct1 - - 0.25 - v error amp section feedback output high voltage veh ea_in = 0v 3.2 3.7 4.2 v output sink current lsin ea_out = 2.2v - - -1 ma output source current lsur ea_out = 2.2v 1 - - ma feedback high voltage on burst dimming vfbh r(ea_in) = 50k ? va+0.1 va+0.4 va+0.7 v multiplier section multiplier input voltage high vmih - 1.4 1.6 1.8 v multiplier gain k - - 0.85 - 1/v soft start section soft start current i ss s_s=2v 5 8.3 11.6 ua soft start clamping voltage vssh - 3 3.7 4.4 v protection section open lamp protection voltage vpr - 2.5 3 3.5 v short circuit protection voltage vsc - 2.5 3 3.5 v open lamp regulation vor - 2.5 3 3.5 v
fan7300 6 electrical characteristics (continued) vcc=10v, for typical values ta=25 c, for min/max values ta is the operating ambient temperature range with -25 c ta 85 c and 6v vcc 25v, unless otherwise specified. characteristics symbol test condition min. typ. max. unit dimming section analog dimming range vaal dim_mode > 2v, dim = 0 -0.5 0 0.5 v vaah dim_mode > 2v, dim = 3v 2.5 3 3.5 v vba dim_mode > 2v - 3 - v burst dimming range vbbl dim_mode < 1v, dim = 0 -0.5 0 0.5 v vbbh dim_mode < 1v, dim = 3v 2.1 2.5 2.9 v vab dim_mode < 1v 2.45 2.85 3.25 v mixed dimming range vaml dim_mode = 1.5v, dim = 0 1.2 1.4 1.6 v vamh dim_mode = 1.5v, dim = 3v 2.5 3 3.5 v vbml dim_mode = 1.5v, dim = 0 -0.5 0 0.5 v vbmh dim_mode = 1.5v, dim = 3v 2.5 3 3.5 v analog dimming select voltage vsa - 1.5 2 2.5 v burst dimming select voltage vsb - 0.7 1 1.3 v mixed dimming select voltage vsm - 1.3 1.5 1.7 v under voltage lock out section start threshold voltage vth - 4.8 5.4 6.0 v start up current ist v cc = 4.5v - 150 250 ua operating supply current iop v cc = 10v - 8.5 11 ma stand-by current isb v cc = 12v - 80 150 ua on/off section on state input voltage von - 0.7 - - v output section output high voltage voh v cc = 7v 5 - - v output low voltage vol v cc = 7v - - 0.2 v output voltage with uvlo activated vuv v cc = 4.5v - - 0.9 v output high clamping voltage vohc v cc = 20v 11 13.5 16 v rising time tr v cc = 7v - 100 200 ns falling time tf v cc = 7v - 50 200 ns
fan7300 7 typical performance characteristics 0 5 10 15 20 25 0 3 6 9 12 supply current vs supply voltage icc [ma] vcc [v] -40 -20 0 20 40 60 80 100 120 140 4.8 5.0 5.2 5.4 5.6 startup voltage vth [v] temp [? ] -40 -20 0 20 40 60 80 100 120 140 0 20 40 60 80 start up current ist [ua] temp [? ] -40 -20 0 20 40 60 80 100 120 140 2.90 2.92 2.94 2.96 2.98 3.00 3v reference voltage v3 [v] temp [? ] -40 -20 0 20 40 60 80 100 120 140 0 2 4 6 8 10 12 operating supply current iop [ma] temp [? ] -40 -20 0 20 40 60 80 100 120 140 0 20 40 60 80 100 120 standby current isb [ua] temp [? ] figure 1. supply current vs. supply voltage figure 2. start up voltage figure 3. start up current figure 4. 3v reference voltge figure 5. operating supply current figure 6. stand by current te m p [ c] te m p [ c] te m p [ c] te m p [ c] tem p [ c]
fan7300 8 typical performance characteristics (continued) -40 -20 0 20 40 60 80 100 120 140 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 on state input voltage von [v] temp [? ] -40 -20 0 20 40 60 80 100 120 140 5 6 7 8 9 10 soft start current iss [ua] temp [? ] -40 -20 0 20 40 60 80 100 120 140 80 90 100 110 ocillastion frequency (main) fosc [khz] temp [? ] -40 -20 0 20 40 60 80 100 120 140 100 120 140 160 180 200 oscillator frequency (burst) fbosc [khz] temp [? ] -40 -20 0 20 40 60 80 100 120 140 5.0 5.5 6.0 6.5 7.0 output high voltage voh [v] temp [? ] -40 -20 0 20 40 60 80 100 120 140 0.00 0.05 0.10 0.15 0.20 output low voltage vol [v] temp [? ] figure 7. on state input voltage figure 8. soft start current figure 9. ocillastion frequency (main) figure 10. ocillastion frequency (burst) figure 11. output high voltage figure 12. output low voltage te m p [ c] te m p [ c] tem p [ c] te m p [ c] te m p [ c] te m p [ c]
fan7300 9 typical performance characteristics (continued) -40 -20 0 20 40 60 80 100 120 140 12.0 12.5 13.0 13.5 14.0 14.5 15.0 output high clamping voltage vohc [v] temp [? ] -40 -20 0 20 40 60 80 100 120 140 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 output voltage with uvlo activated vuv [v] temp [? ] -40 -20 0 20 40 60 80 100 120 140 2.6 2.8 3.0 3.2 3.4 open lamp protection voltage vpr [v] temp [? ] -40 -20 0 20 40 60 80 100 120 140 2.6 2.8 3.0 3.2 3.4 short circuit protection voltage vsc [v] temp [? ] -40 -20 0 20 40 60 80 100 120 140 2.50 2.75 3.00 3.25 3.50 open lamp regulation voltage vor [v] temp [? ] -40 -20 0 20 40 60 80 100 120 140 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 error amp. output high voltage veh [v] temp [? ] figure 13. output high clamping voltage figure 14. output voltage with uvlo activated figure 15. open lamp protection voltage figure 17. open lamp regulation voltage figure 16. short circuit protection voltage figure 18. error amp output high voltage te m p [ c] te m p [ c] te m p [ c] te m p [ c] te m p [ c] te m p [ c]
fan7300 10 typical performance characteristics (continued) -40 -20 0 20 40 60 80 100 120 140 -6.0 -5.5 -5.0 -4.5 -4.0 -3.5 -3.0 -2.5 -2.0 output sink current isin [ma] temp [? ] -40 -20 0 20 40 60 80 100 120 140 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 output source current isur [ma] temp [? ] figure 19. output sink current figure 20. output source current te m p [ c] te m p [ c]
fan7300 11 mechanical dimensions package dimensions in millimeters 20-ssop
fan7300 4/22/03 0.0m 001 stock#dsxxxxxxxx ? 2002 fairchild semiconductor corporation life support policy fairchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. ordering information product number package operating temperature fan7300g 20-ssop -25 c ~ 85 c
careers | sitema go datasheets, samples, buy technical information applications design center support company investors my f a home >> find products >> fan7300 half bridge lcd bac klight controller general description back to top features back to top contents ? general description ? features ? product status/pricing/packaging ? order samples ? qualification support the fan7300 provides all the control functions for a series parallel resonant converter and also contains a pulse width modulation (pwm) controller to develop a supply voltage. typical operating frequency range is between 30khz and 100khz depending on the ccfl and the transformer's characteristics. z high efficiency single stage power conversion z wide input voltage range 6v to 25v z back light lamp ballast and soft dimming z few external components z precision voltage reference trimmed to 2% z soft start z pwm and pfm control z analog, burst and mixed dimming function z allows all n-channel mosfet drive z double pulse suppression logic z open lamp detection z output short circuit protection z open lamp regulation z 20 pin ssop datasheet download this datasheet e - mail this datasheet this page print version related links request samples how to order products product change notices (pcns) support sales support quality and reliability design cente r pa g e 1 of 2 product folder - fairchild p/n fan7300 - half bridge lcd backlight controlle r 16-au g -2007 mhtml:file://c:\temp\fan7300gx.mht
product status/pricing/packaging back to top qualification support click on a product for detailed qualification data back to top product product status pb-free status package type leads packing method fan7300g lifetime buy ssop 20 rail fan7300gx lifetime buy ssop 20 tape reel indicates product with pb -free second-level interconne ct. for more information click here. product fan7300g fan7300gx ? 2007 fairchild semiconductor products | design center | support | company news | investors | my fairchild | contact us | site index | privacy policy | site terms & conditions | standard terms & conditions o pa g e 2 of 2 product folder - fairchild p/n fan7300 - half bridge lcd backlight controlle r 16-au g -2007 mhtml:file://c:\temp\fan7300gx.mht

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