ver: 0.2 jun 11, 2009 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5916 global mixed-mode technology inc. tdfn3x3-10 4 G5916 1 2 3 8 7 6 out c1p 5 9 10 c1n tdfn3x3-10 4 1 2 3 8 7 6 gnd in c2n c2p torch 5 9 10 flash iset thermal pad in out flash c2n gnd G5916 c out 1 f v in = 3v to 5.5v c in 10 f iset c2p r set c 2 1 f torch c 1 1 f c1n c1p flash torch note: recommend connecting the thermal pad to the ground for excellent power dissipation. tdfn3x3-10 4 G5916 1 2 3 8 7 6 out c1p 5 9 10 c1n tdfn3x3-10 4 1 2 3 8 7 6 gnd in c2n c2p torch 5 9 10 flash iset thermal pad in out flash c2n gnd G5916 c out 1 f v in = 3v to 5.5v c in 10 f iset c2p r set c 2 1 f torch c 1 1 f c1n c1p flash torch note: recommend connecting the thermal pad to the ground for excellent power dissipation. flash led driver with 700ma charge pump features ? independent flash/torch/shutdown modes ? up to 700ma drive current ? flash timeout protection ? torch mode set to 20% of flash current ? 1x/2x mode for torch mode to maximize effi- ciency ? wide input voltage range from 3v to 5.5v ? <1 a shutdown current ? input/output over-voltage protection ? short-circuit protection ? over-temperature protection ? tiny tdfn3x3-10 package applications ? cellular camera phone ? digital still camera ? pda camera ? camcorder torch lamp general description the G5916 is a charge pump for high-current white led driving used in camera flash applications. the architecture of two bucket capacitors is used to de- crease the output ripple and provides low emi solution compared to inductive dc-dc regulators. the G5916 has independent flash/torch/shutdown modes. the G5916 is capable to output 500ma of re- gulated current in flash mode for the duration greater than 500ms. while driving 700ma output current, the reduced duration is limit by G5916?s over-temperature protection. there is a one second safety timer in this mode to avoid led damage caused by overheat. the G5916 can outputs 20% of flash mode current con- tinuously in torch mode. the flash mode has priority over the torch mode. a resistor connected to iset pin, which is in series with the led, is to set the current. the iset voltage is 250mv and 50mv in flash and torch mode respec- tively. the G5916 is available in tiny 10-pin 3x3mm tdfn package. ordering information order number marking temp. range package (green) G5916re1u 5916 -40 c to 85 c tdfn3x3-10 note: re: tdfn3x3-10 1: bonding code u: tape & reel pin configuration typical application circuit
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