analog products division 561 e elliott rd, suite 175, chandler, arizona tel. (480) 539-2900 fax. (480) 632-1715 www.protekanalog.com PA5110 constant current led driver . 95225 rev0 04/09 not for use in life support systems features ? fast 1.2mhz switching frequency ? high efficiency 85% typical ? the minimum input voltage 2.5 v ? drives 7 series 2 parallel led?s with 5v v in ? drives 3 series 5 parallel led?s with 5v v in ? requires only 0.47uf output capacitor ? inherently matched led current ? over-voltage protection and uvlo function ? uses very small inductors ? sot23-6 package applications ? led series and parallel applications ? led display panels backlighting. block diagram description the PA5110 is a white led constant current driver used for backlighting of digital photo frames or 3 to 5-inch led screens. it is a step-up dc/dc converter specifically designed to drive white led?s at a constant current. it can drive up to fifteen led?s. it switches at 1.2mhz and uses minimal external components which provide cost and real estate saving over alternate solutions. the output capacitor can be as low as 0.47uf, feedback voltage is 95mv. pin configurations symbo l description symbo l description sw switching output vcc power supply in gnd ground ovp over voltage protection fb feedback ce start-up ordering information temperature range package part number -40 to 85c sot23-6l PA5110-6l 95225 1 2 3 4 6 5 sw gnd fb v cc ce ovp sot23-6l pwm control vref shutdown f osc gm slope comp current sense pin6 v cc pin 4 ce pin3 fb pin2 gnd pin1 sw pin5 ovp + + + + - - -
analog products division 561 e elliott rd, suite 175, chandler, arizona tel. (480) 539-2900 fax. (480) 632-1715 www.protekanalog.com PA5110 constant current led driver . 95225 rev0 04/09 not for use in life support systems absolute maximum ratings parameter symbol value unit supply voltage vin 20 v feedback voltage fb 10 v switch voltage sw 32 v ce voltage vce 20 v operating temperature range topr -25 to +70 c storage temperature range rstg -65 to +150 c junction temperature tj 125 c electrical characteristics t amb = 25 c , v in =5v v ce =5v, unless otherwise specified. parameter test conditions / pins min type max unit minimum operating voltage 4.5 v maximum operating voltage 20 v feedback voltage i sw =100ma, duty cycle=66% 86 95 104 mv fb pin bias current 50 100 200 na supply current v ce =0v 1.9 0.1 2.5 1 ma a switching frequency 0.8 1.2 1.6 mhz maximum duty cycle 85 90 % switch current limit 320 ma switch v cesat i sw =250ma 350 mv switch leakage current v sw =5v 0.01 5 ua ce voltage high 1.5 v ce voltage low 0.4 v ce pin bias current 65 a ovp protection 27 30 33 v
analog products division 561 e elliott rd, suite 175, chandler, arizona tel. (480) 539-2900 fax. (480) 632-1715 www.protekanalog.com PA5110 constant current led driver . 95225 rev0 04/09 not for use in life support systems typical applications 7 series 2 parallel sot23-6l 3 series 5 parallel sot23-6l v cc c1 1f l1 22 d4 c2 0.47f d1 d1 d7 d7 6 v cc 1 sw 2 gn 3 fb 4 ce 6.2? 6.2? 5 ovp v cc c1 1f l1 22 d4 c2 0.47f d1 d1 d3 6 v cc 1 sw 2 gn 3 fb 4 ce 6.2? 6.2? d2 d2 d2 d2 d2 d1 d1 d1 d3 d3 d3 d3 6.2? 6.2? 6.2? 5 ovp
analog products division 561 e elliott rd, suite 175, chandler, arizona tel. (480) 539-2900 fax. (480) 632-1715 www.protekanalog.com PA5110 constant current led driver . 95225 rev0 04/09 not for use in life support systems analog voltage backlight control logic voltage backlight control v cc c1 1f d4 c2 0.47f d1 d1 d7 d7 6 v cc 1 sw 2 gn 3 fb 4 ce 6.2? 6.2? 90k 5k vdc l1 22 v cc c1 1f d4 c2 0.47f d1 d1 d7 d7 6 v cc 1 sw 2 gn 3 fb 4 ce 6.2? 6.2? l1 22 1k pwm 5 5
analog products division 561 e elliott rd, suite 175, chandler, arizona tel. (480) 539-2900 fax. (480) 632-1715 www.protekanalog.com PA5110 constant current led driver . 95225 rev0 04/09 not for use in life support systems waveforms 2. 2. 1. 1. 1. 1. 1. 0. 0. 0. 0. 0. 0. 2. 4. 6. 8. 10. v in (v) i q ( ma ) i q vs temperature -50 10 25 switch frequency vs 1. 1. 1. 0. 0. 0. 0. 0. -25 0. 25 50 75 10 switch frequency (mhz) temp (c) vs temperature (%) 84. 84. 83. 83. 82. 82. 81. 81. 80. 80. -25 0. 25 50 75 10 iled = iled = iled = iled = (ma)
analog products division 561 e elliott rd, suite 175, chandler, arizona tel. (480) 539-2900 fax. (480) 632-1715 www.protekanalog.com PA5110 constant current led driver . 95225 rev0 04/09 not for use in life support systems drive 7 series 2 parallel led?s 90.00% 88.00% 86.00% 84.00% 82.00% 80.00% 78.00% 76.00% 74.00% 72.00% 70.00% 0 5 10 15 20 iled(ma) (%) vin=5v vin=12v 88.0% 87.0% 86.0% 85.0% 84.0% 83.0% 82.0% 81.0% 80.0% 79.0% 0 5 10 15 20 vin = iled ( ma ) drive 3 series 5 parallel (%)
analog products division 561 e elliott rd, suite 175, chandler, arizona tel. (480) 539-2900 fax. (480) 632-1715 www.protekanalog.com PA5110 constant current led driver . 95225 rev0 04/09 not for use in life support systems typical dim millimeters inches 1 2 3 4 5 0.70 1.90 0.95 2.40 1.00 0.028 0.074 0.037 0.094 0.039 sot-23-6 package outline & dimensions sot23-6 package dimensions millimeters inches dim min max min max package outline d 6 5 4 k o 1 2 3 j b m a g a b c d e g j k l m 2.80 1.50 0.90 0.30 0.85 0.90 0.09 2.60 0.0 0.30 3.05 1.75 1.30 0.40 1.05 1.45 0.20 3.00 0.15 0.60 0.110 0.059 0.036 0.012 0.033 0.036 0.003 0.102 0.0 0.012 0.120 0.070 0.051 0.016 0.040 0.057 0.008 0.118 0.006 0.024 mounting pad 3 2 1 5 notes 1. dimensioning and tolerances per ansi y14.5m, 1985. 2. controlling dimension: inches 3. dimensions are exclusive of mold flash and metal burrs. 1. surface mount product is taped and reeled in accordance with eia-481. 2. suffix -t7 = 7 inch reel - 3,000 pieces per 8mm tape, outline & dimensions: rev 3 - 3/08, 06013 tape & reel specifications (d imensions in millimeters) reel dia. tape width a0 b0 k0 d e f w p0 p2 p tmax 178mm (7?) 8mm 3.20 0.10 3.20 0.10 1.65 0.10 1.50 0.10 1.75 0. 10 3.50 0.05 8.00 0.30 4.00 0.10 2.00 0.05 4.00 0.10 0. 25 po d p2 t 1o pitches cumulative tolerance on t ape. + o.2 top cover tape ko pin 1 indicated by dot ao f w bo p user direction of feed copyright ? protek devices 2007 specifications: protek reserves the right to change the electrical and or mechanical characteristics described herein without notice (except jedec). 4 5110 5110 5110 pin1
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