2-channel motor driver ic for dsc, dvc and surveillance cameras r2a30445bx r2a30445bx page 1 of 4 r19ds0065ej0070 rev.0.70 may 10, 2012 r19ds0065ej0070 rev.0.70 may 10, 2012 under development datasheet the specifications are subj ect to change without notice. when it is examined for use, please conf irm that this is the latest version. application motor driver for digital still cameras recommended operating conditions power-supply voltage range ????????????? vm/avcc: 2.7v~5.5v dvdd: 2.7v~3.6v rated power-supply voltage ????????????? vm: 5.0v avcc/dvdd: 3.25v features ? an ultra-fine cmos process has been adopted for low power consumption in a design. ? a small 32-pin wlbga package (ball pitch of 0.4mm/t=0.64mm) ? built-in of 2ch h-bridge (with a fs/btl selectable function). ? btl has a selectable built-in dac control capable of 10bit accuracy. ? hall device drive, built-in hall output computation circuit. ? 8bitdac built-in for various offset adjustments. ? selection of 2 line serial communication (i2c) and 3 line serial communication (spi) is possible. ? for i2c, the input interface control voltage is compatible with 1.8v system. ? for spi, the input interface control voltage is dependent on dvdd. ? built-in power-on reset circuit, reference voltage, prevention from low-voltage malfunction and thermal shutdown circuit. overview the r2a30445bx is a semiconductor integrated circuit that incorporates driver circuits suitable for mo tor of digital cameras. block diagram and application circuit example note: sel2 terminal is connected to dvdd by rewiring cu. pin layout (ball side) body: 2.56mm x 2.60mm t=0.64 ball pitch: 0.4mm outline/package wlbga 2.56mm t=0.64 unit: mm 2.60mm a b c d e f 654321 sdat sclk mcu 1ch btlamp h-bridge fs/cv 10uf control signal (1,2ch) serial control signals (2 lines/3 lines) cs / address agnd 2ch btlamp h-bridge fs/cv control circuit sel1 dvdd pgnd vm avcc avcc out1a out1b out2a out2b curin1 curout1 ain1a ain1b aout1 ain3 aout3 dgnd bias low voltage detection tsd vref(1.25v) 1.5v 2.5v 3.0v 10uf n 8bit dac + ? ? + 8bit dac curin2 curout2 ain2a ain2b aout2 ain4 aout4 8bit dac + ? 8bit dac avcc power supply dvdd power supply 10uf vm power supply 1.5v /3.0v 2.5v/3.0vavcc 1.5v 1.5v 1.5v /3.0v 2.5v/3.0v/avcc power on reset in1a in1b/ vref1 in2a in2b/ vref2 + ? + ? + ? + ? + ? 10bit dac 10bit dac btl internal dac control serial control logic sel2 hall current amp 1 hall amp 1 general- purpose amp 3 hall amp 2 general- purpose amp 4 hall current amp 2
page 2 of 4 r19ds0065ej0070 rev.0.70 may 10, 2012 r2a30445bx 500 0 20 40 60 80 100 120 140 160 1000 1500 thermal derating curve tbd ambient operating temperature ta [ ?c] power consumption pd [mw] absolute maximum ratings (unless specified, the am bient temperature is 25 ?c) note1 v 6.5 vm power-supply voltage 1 ? c ?40~125 tstg storage temperature ? c ?30~85 topr ambient operating temperature note3 /dvdd.vm system input v ?0.3~dvdd+0.3 ?0.3~vm+0.3 vin applied input voltages ? c 150 tj max. junction temperature note2 (ta ?? 25? c) mw/ ? c tbd k ? thermal derating ratio note2 (ta = 25 ? c) mw tbd pd allowable power consumption note4 pw < 10ms, duty ? 20% ma/ch ?1000 iop instant output current (1ch~2ch) note4 note5 dc ma/ch ?400 iod direct current (1ch~2ch) note1 v 6.5 dvdd power-supply voltage 3 note1 v 6.5 avcc power-supply voltage 2 remarks unit rated value symbol item notes: 1. as a rule, do not apply reverse power-supply voltages. 2. glass epoxy board: 76.2mm x 114.5mm x 1.6mm, copper-occupancy ratio in a 4-layer board: 20% in layers 1 and 4, 100% in layers 2 and 3. note that the allowable power consumption changes according to the conditions imposed on the board. 3. as a rule, do not apply voltages above the power-supply voltage or below the gnd voltage. 4. the total output current does not exceed the rated value in usage with multiple channels simultaneously turned on. [remarks] the electric power which the power consumption of this ic with the output transistor of 1ch - 2ch becomes dominant. output transistor power consumption formula : (output current) 2 x on resistance e.g. (500ma) 2 x 2.0ohm=500mw : (vm-voltage between terminals) x voltage between terminals /rl note: in constant voltage control, the on resistance is not included in the calculation when the ambient temperature is 25 ? c or more, refer to the above figure in selecting the required heat sink.
page 3 of 4 r19ds0065ej0070 rev.0.70 may 10, 2012 r2a30445bx bottom view (pin side) a b c d e f 1 234 56 2.60mm 2.56mm aout2 in2a in1b sclk in1a sdat in2b cs dgnd dvdd sel1 out2b out1b pgnd vm out1a out2a aout1 cur in1 ain1a ain2a cur in2 cur out1 ain4 ain3 ain1b ain2b cur out2 avcc agnd aout3 aout4 top view (marking side) 1 234 56 a b c d e f 1 a 445x xxxx out2b out1b pgnd vm out1a out2a in2a in1b sclk in1a sdat in2b cs dgnd dvdd sel1 avcc agnd aout3 aout4 cur out1 ain4 ain3 ain1b ain2b cur out2 aout1 cur in1 ain1a ain2a cur in2 aout2 terminal function explanation f6 f5 f4 f3 f2 f1 e6 e5 e4 e3 e2 e1 d6 d5 d4 d3 d2 d1 pin no out2b in2a dgnd aout4 ain4 aout2 out2a in2b /vref2 address /cs agnd curout2 curin2 vm sclk ? ? ain2b ain2a pin name 12ch power gnd serial control signal ? ? hall amplifier 1 input hall amplifier 1 input 1ch a output 1ch control signal communication mode selection analog circuitry power supply hall current amplifier 1 output hall current amplifier 1 input 1ch b output 1ch control signal digital circuit power supply general-purpose amplifier 3 output general-purpose amplifier 3 input hall amplifier 1 output pin function o i gnd o i o o i i gnd o i supply i ? ? i i i/o 2ch b output gnd pgnd c6 2ch control signal i/o sdat c5 digital gnd ? ? c4 general-purpose amplifier 4 output ? ? c3 general-purpose amplifier 4 input i ain1b c2 hall amplifier 2 output i ain1a c1 2ch a output o out1a b6 2ch control signal i in1b /vref1 b5 i2c ad dress setup /serial control signal i sel1 b4 analog gnd supply avcc b3 hall current amplifier 2 output o curout1 b2 hall current amplifier 2 input i curin1 b1 1 / 2ch motor power supply o out1b a6 serial control signal i in1a a5 ? supply dvdd a4 ? o aout3 a3 hall amplifier 2 input i ain3 a2 hall amplifier 2 input o aout1 a1 pin function i/o pin name pin no
page 4 of 4 r19ds0065ej0070 rev.0.70 may 10, 2012 r2a30445bx ordering information 3000 pcs swbg0032la-a r2a30445bx#w0 quantity package code orderable part no.
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