ver: 0.3 nov 18, 2009 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5519 global mixed-mode technology inc. tft-lcd dc/dc converter with operational amplifiers features ? 2.5v to 5.5v input supply range ? 1.2mhz current mode boost converter ? fast transient response ? 1.6% accurate output voltage ? 18v/2.5a, 0.16 n-channel mosfet ? 91% high efficiency ? linear-regulator controllers for v gon and v goff ? high-performance operational amplifiers ? 150ma output short-circuit current ? 12v/ s slew rate ? 12mhz, -3db bandwidth ? rail-to-rail input and outputs ? internal soft start ? logic-controller, high-voltage switch with ad- justable delay ? multiple overload protection ? thermal shutdown ? small 32-pin 5mmx5mm tqfn package applications ? lcd monitor panels ? notebook computer displays ? lcd tvs general description the G5519 includes a high-performance boost con- verter, two linear-regulator controllers, and high cur- rent operational amplifiers for tft-lcds. also in- cluded is a logic controlled, high-voltage switch with adjustable delay. the boost converter provides the regulated supply voltage for the panel source driver ics. it is a high- frequency (1.2mhz) current-mode regulator with an integrated 18v n-channel mosfet that allows the use of ultra-small inductors and ceramic capacitors. it pro- vides fast transient response to pulsed loads while achieving efficiencies over 86%. using external low-cost transistors, the linear-regulator controllers provide tight regulation v gon /v goff for the panel gate drivers with fault protection. the operational amplifier are ideal for v com and v gamma applications. they features high output current ( 150ma), fast slew rate (12v/ s), wide bandwidth (12mhz), and rail-to-rail inputs and outputs. the G5519 is available in a 32-pin tqfn package for ultra-thin lcd panels. ordering information order number marking temp. range package (green) G5519ra1u 5519 -40 c to +85 c tqfn5x5-32 note: ra: tqfn5x5-32 bonding code: 1 u: tape & reel pin configuration note: recommend connecting the thermal pad to the ground for excellent power dissipation. G5519 tqfn5x5-32 1 2 3 4 5 6 18 19 20 21 22 23 30 25 26 27 29 28 9 10 11 12 thermal pad 7 13 14 17 31 8 15 16 24 32 src ref agnd pgnd out1 neg1 pos1 out2 comp fb in lx out5 neg5 pos5 out4 com drn ctl del drvn fbn drvp fbp neg2 pos2 bgnd pos3 out3 sup pos4 neg4 note: recommend connecting the thermal pad to the ground for excellent power dissipation. G5519 tqfn5x5-32 1 2 3 4 5 6 18 19 20 21 22 23 30 25 26 27 29 28 9 10 11 12 thermal pad 7 13 14 17 31 8 15 16 24 32 src ref agnd pgnd out1 neg1 pos1 out2 comp fb in lx out5 neg5 pos5 out4 com drn ctl del drvn fbn drvp fbp neg2 pos2 bgnd pos3 out3 sup pos4 neg4
|
