View VM149D_8504736.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

?W@^?I? 9 ? 7 ? 1 silicon touch technology inc . 9-7f-1, prosperity road i, science based industrial park, hsin-chu, taiwan 300, r.o.c. tel 886-3-5645656 fax 886-3-5645626 VM149D version : a.003 issue date : 2013-10-14 file name : sp-VM149D-a.003.doc total page : 12 120ma, 10bit current sinking vcm driver with i 2 c interface
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page1 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D 120ma, 10-bit current sinking vcm driver with i 2 c interface general specifications the VM149D is a vcm (voice coil motor) driver ic with i 2 c interface control that is capable of programmable sinking output current. it has a built-in in ternal voltage reference and operates with a supply voltage range from 2.3v to 3.6v. the dac is controlled by a signal transmit through a 2-wire i 2 c serial interface which operates in an i 2 c fast mode (400 khz). the VM149D is designed for applications such as image stabilization, autofocus in camera phones, and other portable devices. features and benefits z programmable sinkin g output current z i 2 c serial interface z dac with 10-bit resolution z 2.3v ? 3.6v power source z selective output slew rate control (src) z low voltage control for digi tal pin ps, sda, and scl z power saving mode z automatic power on reset z ultra small package: wlcsp (0.805mm*1.295mm*0.35mm) ordering information part number package marking VM149D wlcsp, 6pin tbd
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page2 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D terminology resolution the dac resolution is defined by the power fa ctor of 2, which def ines the number of distinct digitized levels. n-bit resolution -> 2 n distinct digitized levels differential nonlinearity (dnl) error the variation in digitized step value away from 1 lsb by any two adjacent digitized levels, gain and offset errors removed.
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page3 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D pin assignment top view pin number pin name description 1 sink analog output : current sink pin 2 vss ground pin 3 vdd power input pin 4 sda i 2 c interface data line (serial data line) 5 scl i 2 c interface clock line (serial clock line) 6 ps digital input: power saving control (when ps=high, chip is disabled) (when ps=low, chip is enabled) absolute maximum ratings unless otherwise noted , t a = 25 characteristic symbol rating unit supply voltage v dd -0.4 ~ 3.6 v input signal voltage v in -0.4 ~ v dd +0.4 v maximum sink current i sink 130 ma operating temperature t opr -40 ~ 85 c storage temperature t stg -55 ~ 150 c
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page4 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D electrical characteristic unless otherwise noted , t a = 25 , v dd = 2.8 v and vcm 32 , 460uh. limit item sym. condition min. typ. max. unit power supply supply voltage v dd - 2.3 2.8 3.6 v i ps ps = high (chip is disabled) - < 1 ua i dd0 ps = low, sps(*1)= high - < 1 ua supply current ( i dd ) i dd1 ps = low, sps(*1)= low - 1.8 2.3 ma ps, sda, scl digital pin input voltage high v ih - 1.26 - v dd +0.4 v input voltage low v il - -0.4 - 0.54 v input current high i ih - 1 ua input current low i il - 1 ua parameters dac resolution - - 10 - bits dnl - - +/-0.7 +/-1 lsb inl - - +/-1.5 +/-4 lsb maximum output sink current i s,max d[9:0]=3ff(*2) 120 ma zero code output sink current i s,min d[9:0]=000(*2) - 0.1 1 ua output offset current i os ps = l, sps(*1)= h - 0.1 1 ua voltage drop v mvss sink v v v ? = (*3) (@i sink = 85 ma) - 0.08 v note: (*1): sps (soft power saving, 2 nd standby mode): ic power saving mode, controlled by software. (*2): the value of sink current throu gh pin sink is set by d[9:0] linearly. (*3): sink v is the voltage of sink pin, and mvss v is the voltage of motor driver vss pin
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page5 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D block diagram
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page6 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D data format VM149D write mode in the writing mode, data is written to the vm 149d and shifted into a 16-bit input register. after all 16 bits of data have been shifted in , a stop signal is generated by master controller. the data in the input register is transferred to the dac at the same time. scl sda 011 00 00w 9 19 1 9 1 ack by 11-vm149 ack by 11-vm149 ack by 11-vm149 stop by master start by master frame 1 serial bus address byte frame 2 most significant data byte frame 3 least significant data byte sps d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 s3 s2 s1 s0 0 VM149D read mode in reading mode, data is read from ic to a master controller in the same bit order. stop by master scl sda 011 00 00r 9 19 1 9 1 ack by 11-vm149 ack by master nack by master start by master frame 1 serial bus address byte frame 2 most significant data byte frame 3 least significant data byte sps d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 s3 s2 s1 s0 0
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page7 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D table msb lsb serial data bits 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 input register r15 r14 r13 r12 r11 r10 r09 r08 r07 r06 r05 r04 r03 r02 r01 r00 function sps 0 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 s3 s2 s1 s0 z sps (soft power saving, 2 nd standby mode): ic power saving, controlled by software. the operations are defined by the following table. ps sps ic status high - power saving low normal low high soft power saving if ps is at logic high level; the chip is forced to shut down all power. if ps is at logic low level, the chip will be controlled by the sps bit(the r15 bit of the register) to perform normally(sps=low) or to softly power off the ic(sps=high). it is recommended to keep ps at high level (ps = h) while the chip is in no operation mode to save power for all applications. z d[9:0]: the level of sink current thr ough pin sink is set by d[9:0].
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page8 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D z s[3:0]: output current slew rate control: the output current slew rate can be set by s[3:2] : as step control and s[1:0] as step period. s[3:2] : code step control s[3:2] code per step 0 0 (no src) 1 1 2 2 3 4 s[1:0] :src step period s[1:0] period (us) 0 64 1 128 2 256 3 512 ? ? code per 1 step is set by s[3:2] 1 step period is set by s[1:0] no src s[3:0] =0 ? ? code per 1 step is set by s[3:2] 1 step period is set by s[1:0] no src s [ 3:0 ] =0
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page9 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D application circuit application notes z the VM149D is a constant current drivi ng ic for applications in auto-focus. the supply voltage range vdd of VM149D is from 2.3v to 3.6v. the input range of digital control pin ps, and digital i/o pins scl and sda, are defined such that logic ?high? is from 1.26v to vdd+0.4v and logic ?low? is from ?0.4v to 0.54v. therefore, the three digi tal pins are suitable controlled by 1.8v isp.
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page10 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D package specifications (wlcsp): (0.805mm*1.295mm*0.35mm) top view dimension (mm) symbol min. nom. max. a 0.310 0.350 0.390 a1 0.085 0.100 0.115 a2 0.225 0.250 0.275 b 0.200 0.245 0.290 d 1.260 1.295 1.330 e 0.770 0.805 0.840 e1 0.380 0.400 0.420 e2 0.380 0.400 0.420 l1 0.180 0.245 0.300 l2 0.145 0.200 0.255
120ma, 10bit current sinking vcm driver with i 2 c interface version a.003 page11 ??u}u??_??????P? unauthorized reproduction, duplication, use or disclosure of this documen t will be deemed as infringement. VM149D the products listed herein are designed for or dinary electronic applications, such as electrical appliances, audio-visual equipm ent, communications devices and so on. hence, it is advisable that the devices should not be used in medical instruments, surgical implants, aerospace machi nery, nuclear power control systems, disaster/crime-prevention equipment and the like. misusing those products may directly or indirectly endanger human lif e, or cause injury and property loss. silicon touch technology, inc. will not take any responsibilities regarding the misusage of the products m entioned above. anyone w ho purchases any products described herein with the above-mentioned intention or with such misused applications should accept full responsibility and indemnify. silicon touch technology, inc. and its distributors and all their office rs and employees shall defend jointly and severally against any and all claims and litigation and all damages, cost and expenses associated with such in tention and manipulation. silicon touch technology, inc. reserve the ri ght to make changes to their products or to discontinue any product or service withou t notice, and advise customers to obtain the latest version of relevant informati on to verify, before placing orders, that information being relied on is current and complete.

▲Up To Search▲

Price & Availability of VM149D

	To Download VM149D Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .