ver: 0.3 jun 02, 2011 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5512 global mixed-mode technology inc. integrated power solution for tft-lcd features ? 2.5v to 5.5v input supply range ? 1.2mhz current-mode step-up converter ? built-in 18v, 0.15 n-channel mosfet ? charge pumps for v gon and v goff ? thermal overload protection ? tqfn5x5-20 package applications ? lcd monitor panels ? notebook computer displays ? lcd tvs general description the G5512 includes a step-up converter, a positive charge pump, and a negative charge pump. also in- cluded is a logic-controlled high-voltage switch with built-in delay. the step-up dc/dc converter provides the regulated power supply for the panel source driver ic. the con- verter is a high performance current-mode regulator with operating frequency at 1.2mhz. it also provides fast transient response and high efficiency. the charge pumps in G5512 regulate tft gate-on and gate-off power supplies for lcd panel. G5512 is available in tqfn5x5-20 package. ordering information order number marking temp. range package (green) G5512rs1u 5512 -40 c to 85 c tqfn5x5-20 note: rs: tqfn5x5-20 1: bonding code u: tape & reel pin configuration G5512 tqfn5x5-20 1 2 3 4 5 11 12 13 14 15 thermal pad vin adj vin sw sw pgnd drvn drvp agnd fbn vref fbp ctl vgh nc vghm pgnd comp fb sup note: recommend connecting the thermal pad to the ground for excellent power dissipation. 6 7 8 9 10 16 17 18 19 20 21 bgnd G5512 tqfn5x5-20 1 2 3 4 5 11 12 13 14 15 thermal pad vin adj vin sw sw pgnd drvn drvp agnd fbn vref fbp ctl vgh nc vghm pgnd comp fb sup note: recommend connecting the thermal pad to the ground for excellent power dissipation. 6 7 8 9 10 16 17 18 19 20 21 bgnd
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