ver: 0.1 aug 14, 2012 tel: 886-3-5788833 http://www.gmt.com.tw 1 G2018 global mixed-mode technology 5+1ch serial input motor driver ic for dsc features ? build-in one micro-steps drive mode is possible from 2-2 phase stepper drive to maximum 1024 resolution micro-steps. ? built in 2 full-swing/constant voltage drivers switched by serial control with brake function ? built in 1 constant current drivers for shutter or iris ? built in ch3 dcm fll function ? low on-resistance (1.2 , sum of on-resistance of upside and bottom side) ? output current iout<=0.8a(max.) for each channel ? build-in thermal shutdown (tsd, 150 c) ? all power supply systems (vcc, vm12, vm3, vm45) can be set up with an independent power supply ? power save mode corresponds by serial control setup ? pi (photo interrupter drive) 3 channel built-in. ? small 32tqfn (4 4mm) is adopted ? build-in por (power on reset). applications ? stepping motor driver/ dc motor driver for dsc general description G2018 is a 5+1-channel h-bridge motor drivers ic for the digital camera and so on. it has one micro-stepping driver, two full-swing/constant voltage drivers and one full-swing/constant current drivers. G2018 can be operated in serial control mode or partial exterior control mode. when operating in partial exterior control mode, the mode of each ch is fixed by initial serial control setting. when operating in serial control mode, the mode of each driver can be setting by serial control. ordering information order number marking temp. range package (green) G2018k11u 2018 -20 c to +85 c tqfn4x4-32 note: k1: tqfn4x4-32 1: bonding code u: tape & reel pin configurations ch12:micro_stepping ch3 :cv/fs ch4 :cv/fs ch5 :cc/fs nc in1 in2 in4 note: recommend connecting the thermal pad to the ground for excellent power dissipation. G2018 tqfn4x4-32 1 2 3 4 5 6 18 19 20 21 22 23 30 25 27 29 28 9 10 11 12 thermal pad 7 13 14 17 31 8 15 16 24 32 nc out1a out1b vm12 out2a out2b out3a out5b vm45 out4a out4b pi1 pi2 pi3 in3 oscin out5a vm3 sdat sclk sld vcc fb3 flag3 mob 26 rnf5 gnd out3b nc in1 in2 in4 note: recommend connecting the thermal pad to the ground for excellent power dissipation. G2018 tqfn4x4-32 1 2 3 4 5 6 18 19 20 21 22 23 30 25 27 29 28 9 10 11 12 thermal pad 7 13 14 17 31 8 15 16 24 32 nc out1a out1b vm12 out2a out2b out3a out5b vm45 out4a out4b pi1 pi2 pi3 in3 oscin out5a vm3 sdat sclk sld vcc fb3 flag3 mob 26 rnf5 gnd out3b
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