ver: 0.1 jun 04, 2008 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5535 global mixed-mode technology inc. lcd panel power supplies with low-cost linear- regulator, charge-pumps and high-current op features ? high-performance linear regulator ? 1.6% output accuracy ? works with small ceramic output capacitors ? fast transient response ? foldback current limit ? high-current operational amplifier: ? 12v/ s slew rate ? 12mhz, -3db bandwidth ? rail-to-rail inputs/output ? 100ma negative charge pump regulator ? 50ma positive charge pump regulator with adjustable delay ? built-in power-up sequence ? gate-on pulse modulator for sequence & dis- charge control ? thermal protection ? latched fault protection with timer ? tqfn4x4-24 package applications ? lcd monitor panel modules ? lcd tv panel modules general description G5535 incorporates a high-performance linear regula- tor, two low-power charge-pump regulators, a high- current operational amplifier, and logic-controlled gate-on pulse modulator to control the positive charge-pump output sequence and waveform. the linear regulator generates the source-driver sup- ply voltage from the input voltage directly. the two charge-pump regulators generate the positive gate-on and negative gate-off supply voltages. the operational amplifier supplies the vcom buffer with high output current, fast slew rate and wide bandwidth perform- ances for driving capacitive loads. the gate-on pulse modulator control (swctl) is independent of the shdn chip enable control. the G5535 adopts a 24-pin tqfn package which is 4mm 4mm with a maximum thickness of 0.8mm for ultra-thin lcd panel application. ordering information order number marking temp. range package (pb free) G5535r51u 5535 -40 c to 85 c tqfn4x4-24 note: r5: tqfn4x4-24 1: bonding code u: tape & reel pin configuration G5535 tqfn4x4-24 gon drn ref posop inl negop shdn fbp thr vddop outop gnd 1 2 3 4 5 6 13 14 15 16 17 18 24 19 21 23 22 nc 8 7 9 10 11 12 thermal pad swp swn vddcp outl vcc swctl fbl agotp dlp fbn vps 20 G5535 tqfn4x4-24 gon drn ref posop inl negop shdn fbp thr vddop outop gnd 1 2 3 4 5 6 13 14 15 16 17 18 24 19 21 23 22 nc 8 7 9 10 11 12 thermal pad swp swn vddcp outl vcc swctl fbl agotp dlp fbn vps 20
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