2-channel motor driver ic for dsc, dvc and surveillance cameras r2a30445np r2a30445np page 1 of 4 r19ds0066ej0090 rev.0.90 may 10, 2012 r19ds0066ej0090 rev.0.90 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. ? 5.0mmx5.0mm qfn (0.5mm pitch) ? 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. ? built-in power-on reset circuit, reference voltage, prevention from low- voltage malfunction and thermal shutdown circuit. overview the r2a30445np is a semiconductor integrated circuit that incorporates driver circuits suitable for mo tor of digital cameras. block diagram and application circuit example 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 outline: 32qfn (5.0x5.0mm t=1.0mm(max)) pin configuration (top view) note) - the terminals (lead) is located on the package underside. - there is heat dissipation pad at the center underside of the package. - sel2 terminal is connected with dgnd with a wire. 1 9 16 17 24 25 32 8 aout1 ain3 aout3 avcc dvdd sel1 vm in1a in1b/vref1 out1b pgnd in2b/vref2 out1a out2a out2b in2a ain4 aout4 agnd dgnd cs sdat aout2 sclk curout1 curin1 ain1a ain2b ain1b ain2a curin2 curout2 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 r19ds0066ej0090 rev.0.90 may 10, 2012 r2a30445np 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 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 r19ds0066ej0090 rev.0.90 may 10, 2012 r2a30445np outline: 32qfn (5.0x5.0mm t=1.0mm(max)) pin configuration (top view) note) - the terminals (lead) is located on the package underside. - there is heat dissipation pad at the center underside of the package. - sel2 terminal is connected with dgnd with a wire. 1 9 16 17 24 25 32 8 aout1 ain3 aout3 avcc dvdd sel1 vm in1a in1b/vref1 out1b pgnd in2b/vref2 out1a out2a out2b in2a ain4 aout4 agnd dgnd cs sdat aout2 sclk curout1 curin1 ain1a ain2b ain1b ain2a curin2 curout2 terminal function explanation hall amplifier 2 input i ain2a 28 12ch power gnd gnd pgnd 12 hall amplifier 2 input i ain2b 27 1ch a output o out1a 11 analog gnd gnd agnd 21 digital circuit power supply supply dvdd 5 digital gnd gnd dgnd 20 analog circuitry power supply supply avcc 4 32 31 30 29 26 25 24 23 22 19 18 17 pin no curout1 curin1 ain1b ain1a curin2 curout2 aout2 ain4 aout4 address /cs sdat sclk pin name 2ch control signal 2ch control signal 2ch b output 2ch a output 1ch b output 1ch control signal 1ch control signal 1/2ch motor power supply communication mode selection general-purpose amplifier 3 output general-purpose amplifier 3 input hall amplifier 1 output pin function o i i i i o o i o i i/o i i/o hall current amplifier 1 output i in2a 16 hall current amplifier 1 input i in2b /vref2 15 hall amplifier 1 input o out2b 14 hall amplifier 1 input o out2a 13 ha ll current amplifier 2 input o out1b 10 hall current amplifier 2 output i in1b /vref1 9 hall amplifier 2 output i in1a 8 general-purpose amplifier 4 input supply vm 7 general-purpose amplifier 4 output i sel1 6 i2c address setup /serial control signal o aout3 3 serial control signal i ain3 2 serial control signal o aout1 1 pin function i/o pin name pin no
page 4 of 4 r19ds0066ej0090 rev.0.90 may 10, 2012 r2a30445np package dimensions ordering information 5000 pcs pwqn0040ld-a r2a30445np#w0 quantity package code orderable part no.
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