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| ver: 1.5 oct 28 2013 tel: 886-3-5788833 http://www.gmt.com.tw 1 g5996/G5996A global mixed-mode technology led backlight controller features ? 7v~27v input voltage range ? high power current mode dc/dc boost con- troller ? drives up to 4 strings in parallel ? external analog/true pwm dimming ? +/-2% voltage reference ? programmable switching frequency ? programmable slope compensation ? programmable current limit ? +0.2a/-0.4a gate driver ? input under voltage protection ? output short circuit protection ? hiccup mode protection for output over voltage protection and led light bar short/open pro- tection ? thermal shutdown ? available in tqfn4x4-24/tqfn4x4-28/sop-28 package applications ? tv general description the g5996/G5996A is current mode dc/dc controller that drives up to four strings connected in parallel con- figuration with multiple leds in each string connected in series. external current sense resistor and slope compensation resistor make it flexible for various ap- plications. a pwm dimming input controls a duty ratio from 0% to 100% with frequency up to few kilohertz. the g5996/G5996A includes hiccup protection from both short and open circuits, with automatic recovery after the fault condition is cleared. the g5996 is available in a tqfn4x4-24 package. the G5996A is available in a tqfn4x4-28 and sop-28 package. ordering information order number marking temp. range package (green) g5996r51u 5996 -20 c to +85 c tqfn4x4-24 G5996Arv1u 5996a -20 c to +85 c tqfn4x4-28 G5996Ap61u G5996A -20 c to +85 c sop-28 note: r5 : tqfn4x4-24 rv: tqfn4x4-28 p6: sop-28 1 : bonding code u : tape & reel pin configuration g5996 tqfn4x4-24 pwmd sw pvh ovp vin cs gate3 led3 isen3 isen4 led4 gate4 1 2 3 4 5 6 13 14 15 16 17 18 24 19 21 23 22 iref 8 7 9 10 11 12 thermal pad ref clim vdd comp rt gate2 led2 isen2 isen1 led1 gate1 20 note: recommend connecting the thermal pad to the ground for excellent power dissipation. G5996A tqfn4x4-28 1 2 3 4 5 6 16 17 18 19 20 21 27 22 23 24 26 25 8 9 10 11 12 thermal pad 7 13 14 15 28 pwmd sw pvh ovp vin cs rt iref ref clim vdd comp adim bosc led3 gate3 isen3 isen4 led4 gate4 fault gate2 led2 isen2 isen1 led1 gate1 en G5996A isen3 isen4 led4 gate4 fault gnd adim iref led1 en pwmd sw pvh ovp cs rt comp gate3 sop-28 24 23 22 21 20 19 18 17 16 15 5 6 7 8 9 10 11 12 1 4 3 2 gate1 led3 vdd clim 13 14 ref isen1 28 27 26 isen2 25 vin gate2 led2 g5996 tqfn4x4-24 pwmd sw pvh ovp vin cs gate3 led3 isen3 isen4 led4 gate4 1 2 3 4 5 6 13 14 15 16 17 18 24 19 21 23 22 iref 8 7 9 10 11 12 thermal pad ref clim vdd comp rt gate2 led2 isen2 isen1 led1 gate1 20 note: recommend connecting the thermal pad to the ground for excellent power dissipation. G5996A tqfn4x4-28 1 2 3 4 5 6 16 17 18 19 20 21 27 22 23 24 26 25 8 9 10 11 12 thermal pad 7 13 14 15 28 pwmd sw pvh ovp vin cs rt iref ref clim vdd comp adim bosc led3 gate3 isen3 isen4 led4 gate4 fault gate2 led2 isen2 isen1 led1 gate1 en G5996A isen3 isen4 led4 gate4 fault gnd adim iref led1 en pwmd sw pvh ovp cs rt comp gate3 sop-28 24 23 22 21 20 19 18 17 16 15 5 6 7 8 9 10 11 12 1 4 3 2 gate1 led3 vdd clim 13 14 ref isen1 28 27 26 isen2 25 vin gate2 led2
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