1/5 rev. a structure silicon monolithic integrated circuit product series motor driver for electronic camera module type BU64240GWZ features ? linear current sink driver ? 10bit resolution current control ?i p 2 p c serial interface ? integrated current sense resistor ? intelligent slew rate control(isrc) for mechanical ringing compensation ? absolute maximum ratings 1 vin is i2c bus input pin (scl, sda). 2 reduced by 2.2 mw/c over 25c, when mounted on a glass epoxy board (50mm ? 58mm ? 1.75mm; 8 layers) 3 must not exceed pd, aso, or tjmax of 125c. ? operating conditions (ta= -25c to +85c) parameter symbol min. typ. max. unit power supply voltage vcc 2.3 3.0 4.8 v power save input voltage vps 0 - 4.8 v control input voltage vin 0 - 4.8 v i p 2 p c bus frequency fclk - - 400 khz output current iout - - 130 4 p ma 4 must not exceed pd, aso. parameter symbol limit unit power supply voltage vc c -0.5 to +5.5 v power save input voltage vps -0.5 to 5.5 v control input voltage 1 vin -0.5 to 5.5 v power dissipation pd 220 2 mw operating temperature ran ge topr -25 to +85 c junction temperature tjmax 125 c storage temperature range tstg -55 to +125 c output current iout +200 p 3 p ma
2/5 rev. a ? electrical characteristics (unless ot herwise specified ta=25c, vcc=3.0v ) parameter symbol limit unit conditions min. typ. max. overall circuit current during standby operation iccst - 0 5 a ps=0v circuit current icc - 0.6 1.0 ma ps=3v, scl=400khz power save input high level input voltage vpsh 1.26 - vcc v low level input voltage vpsl 0 - 0.5 v low level input current ipsl -10 - 10 a vps=0v high level input current ipsh -10 - 10 a vps=3v control input (vin=scl, sda) high level input voltage vinh 1.26 - vcc v low level input voltage vinl 0 - 0.5 v low level output voltage vinol - - 0.4 v iin=+3.0ma (sda) high level input current iinh -10 - 10 a input voltage=0.9 vin low level input current iinl -10 - 10 a input voltage=0.1 vin uvlo uvlo voltage vuvlo 1.6 - 2.2 v 10bit d/a converter(for setting limit voltage) resolution dres - 10 - bits differential nonlinearity ddnl -1 - 1 lsb integral nonlinearity dinl -4 - 4 lsb constant-current driver block output current resolution iores - 126 - a output maximum current iomax 117 130 143 ma daccode = 3?h3ff zero code offset current ioofs 0 1 5 ma daccode = 3?h000 output voltage vout - 150 200 mv io = 100ma maximum applied voltage vomax - - vcc v this specification is supposed to be revised for improvement etc.
3/5 rev. a ?package outline ? pin arrangement (top view) ?block diagram ? i2c bus format (fast mode: scl=400khz ) 1 2 3 a ps scl sda b out gnd vcc register name setting item description ps serial power save '0' = standby mode, '1' = operating mode en out pin status '0' = hi-impedance, '1' = constant current sink. m mode select signal '0' = isrc mode disabled , '1' = isrc mode enabled w2w1w0 register address ?000? = limit voltage setting, '001' = operating parameter setting1 ?010? = operating parameter setting2, ?011? = operating parameter setting 3 ?100? = operating parameter setting4 d9 d0 limit voltage target position dac code[d9:d0] operating parameter1 resonance frequency setting[d7:d3], slew rate speed setting[d1:d0] operating parameter2 vcm un-control current setting1[d9:d0] operating parameter3 vcm un-control current setting2[d9:d0] operating parameter4 step resolution[d7:d5] ( minimum step resolution = 1lsb@10bit_dac) step time setting[d4:d0] ( minimum step time resolution = 50us ) fig.1 ucsp30l1 package (unit: mm) fig.2 BU64240GWZ pin arrangement (top view) fi g .3 BU64240GWZ block dia g ram sda out scl pre driver gnd bandgap vref bandgap ps power save rnf =0.5 i sink vcc 0.1 10uf tsd & uvlo vcc vcc osc i2c bus interface & slew rate control 10 10bit dac v/i convertor bottom view side view top view write moder/w = 0) output from master output from slave s0001100 r/w apsen w2 w1 w0 m d9 d8 a d7 d6 d5 d4 d3 d2 d1 d0 a read mode s00011000apsen w2 w1 w0 m a s00011001apsen w2 w1 w0 m cd9 cd8 a cd7 cd6 cd5 cd4 cd3 cd2 cd1 cd0 a s : start signal p : stop signal a : acknowledge na : non acknowledge : don`t care update read write update w (register address)
4/5 rev. a ? characteristics of the sda and scl bus lines for 2-wire serial interface. (unless otherwise specified, ta=-25 +85c, vcc=2.3 4.8v ) parameter symbol standard-mode 6 fast-mode 6 unit min. max. min. max. low level input voltage vil -0.5 0.5 -0.5 0.5 v high level input voltage vih 1.26 4.8 1.26 4.8 v hysteresis of schmitt trigger inputs vhys - - 0.15 - v low level output voltage at 3ma sink current vol 0 0.4 0 0.4 v pulse width of spikes which must be suppressed by the input filter tsp 0 50 0 50 ns input current each i/o pin with an input voltage between 0.1v and 0.9vin max ii -10 10 -10 10 ua scl clock frequency fscl - 100 - 400 khz hold time (repeated) start condition. after this period, the first clock pulse is generated thd;sta 4.0 - 0.6 - us low period of the scl clock tlow 4.7 - 1.3 - us high period of the scl clock thigh 4.0 - 0.6 - us set-up time for repeated start condition tsu;sta 4.7 - 0.6 - us data hold time thd;dat 0 3.45 0 0.9 us data set-up time tsu;dat 250 - 100 - ns set-up time for stop condition tsu;sto 4.0 - 0.6 - us bus free time between a stop and start condition tbuf 4.7 - 1.3 - us 6 standard-mode and fast-mode 2-wire serial interface devices must be able to transmit or receive at that speed. the maximum bit transfer rates of 100 kbit/s for standard-mode devices and 400 kbit/s for fast-mode devices this transfer rates is provided the maximum transfer rates, for example it is able to drive 100 kbit/s of clocks with fast-mode . ? definition of timing on the 2-wire serial interface fig.4 definition of timing for serial data fig.5 definition of timing for start and stop bit scl tbuf sda thd : sta tsu : dat thd : dat thigh tlow scl start bit sda stop bit tsu : sta thd : sta tsu : sto
5/5 rev. a ? operation notes (1) absolute maximum ratings use of the ic in excess of absolute maximum ratings su ch as the applied voltage or operating temperature range (topr) may result in ic damage. assumptions should not be made regarding the state of the ic (short mode or open mode) when such damage is suffered. the implementation of a physical safety measure such as a fuse should be considered when use of the ic in a spec ial mode where the absolute maximum ratings may be exceeded is anticipated. (2) power supply lines regenerated current may flow as a result of the motor's back electromotive force. insert capacitors between the power supply and ground pins to serve as a route for regenerated current. determine the capacitance in full consideration of all the characteristics of the electrolytic capacitor, because the electrolytic capacitor may loose some capacitance at low temperatures. if the connected power supply does not have su fficient current absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute maximum ratings. it is recommended to implement a physical safety measure such as the insertion of a voltage clamp diode between the power supply and gnd pins. (3) ground potential ensure a minimum gnd pin potential in all operating conditions. (4) setting of heat use a thermal design that allows for a sufficient margin in light of the power dissipa tion (pd) in actual operating conditions. (5) actions in strong magnetic field use caution when using the ic in t he presence of a strong magnetic field as doing so may cause the ic to malfunction. (6) aso when using the ic, set the output transistor for the motor so that it does not exceed absolute maximum ratings or aso. (7) thermal shutdown circuit this ic incorporates a tsd (thermal shutdown) circuit (t sd circuit). if the temperature of the chip reaches the following temperature, the motor coil output will be opened. the thermal shutdown circuit (tsd circuit) is designed only to shut the ic off to pr event runaway thermal oper ation. it is not designed to protect the ic or guarantee its operation. do not continue to use the ic after operating this circuit or use the ic in an environment where the operation of this circuit is assumed. tsd on temperature [c] (typ.) hysteresis temperature [c] (typ.) 150 20 (8) ground wiring pattern when using both small signal and large current gnd pa tterns, it is recommended to isolate the two ground patterns, placing a single ground point at the applicati on's reference point so that the pattern wiring resistance and voltage variations caused by large currents do not ca use variations in the small signal ground voltage. be careful not to change the gnd wiring pattern of any external components, either. (9) power save (ps) terminal ps holds the reset function on logic concurrently. please release ps after the start-up of vcc. reset is not normally done when vcc is short-circuited to ps and it uses it, and there is a possibility of malfunctions. this specification is supposed to be revised for improvement etc
r1120 a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specied herein is subject to change for improvement without notice. the content specied herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specied in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specied herein is intended only to show the typical functions of and examples of application circuits for the produc ts. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specied in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, re or any other damage caused in the event of the failure of any product, such as derating, redundancy, re control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specied herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law.
|
