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product structure silicon monolithic integrated circuit this product has no designed protection against radioactive rays . 1/ 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 tsz22111 ? 14 ? 001 www.rohm.com capacitive controller ic s capacitive switch controller ic b u21170muv general description BU21170MUV is a capacitive sensor controller for switch operation. BU21170MUV has five sensors and provides the simple switch function by each sensor. if external n oise and temperature drift are detected, the automatic self - calibration is operated. include led controller with pwm function. features ? 5 capacitive sensor ports. ? automatic self - calibration. ? continued touch detection. ? led controller with pwm function. ? inf orm the detected result of switch operation by interrupt. ? 2 - wire serial bus interface. ? single power supply. ? built - in power -on - reset and oscillator. applications ? information appliance as printer. ? av appliance as digital tv and hdd recorder. ? notebook pc. key specifications ? power supply voltage range: 3 . 0 v to 5.5v ? operating temperature range: -25 c to +85 c ? o perating current: 3.5ma(typ w ithout load) ? scan rate: 14.8msec(typ) package w(typ) x d(typ) x h(max) vqfn020v4040 4.00mm x 4.00mm x 1.00mm typical application circuit vqfn020v4040 figure 1. typical application circuit datashee t 0.1uf vdd avdd 2.2uf vss test host scl sda int vdd 4.7k 4.7k vdd ledr led3 vdd ledr vdd ledr led2 adr recommended dt number : dtc043zeb led4 sin2 sin1 sin0 BU21170MUV top view 1 5 15 11 20 16 6 10 vdd ledr sin4 dt dt dt dt dvdd 1.0uf sin3 vdd ledr dt led1 led0 vdd n.c.
b u21170muv 2 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 pin configuration p in description s pin no . pin name type function note power initial condition i/o equivalen t circuit 1 sin1 ain capacitive t ouch s ensor 1 a vdd hi - z figure 3 2 sin0 ain capacitive t ouch s ensor 0 a vdd hi - z figure 3 3 avdd power ldo output for analog block s - - - 4 vdd power power - - - 5 dvdd power ldo output for digital block s - - - 6 vss ground ground - - - 7 test in test input fixed p a d i v d d p a d c i n i v d d o e n a i n a s w p a d i o e n a v d d l e d 4 n . c . s i n 4 s i n 2 s i n 3 s i n 1 s i n 0 a v d d v d d d v d d i n t s d a s c l v s s t e s t l e d 2 l e d 3 l e d 0 l e d 1 a d r 2 0 1 6 1 7 1 9 1 8 6 1 0 9 7 8 1 5 1 1 1 2 1 4 1 3 1 5 4 2 3 b u 2 1 1 7 0 m u v t o p v i e w
b u21170muv 3 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 block diagram block description s sensor afe , c/ v converter convert from capacitance to voltage following the order of sensors. a/d convert from voltage to the detected result the digital value. ldo28 2.73v output ldo for sensor afe, c/v converter and a/d. ldo15 1.5v output ldo for osc and digital block s. osc ring oscillator as the system clock. por power - on - reset monitoring vdd as the system reset. mpu based on the detection result, detect switch operations (touch/release/hold) and run auto - calibration. inform by the int port to the host about that the switch operations are detected. led ports are controlled by the commands from the host. host i/f 2 - wire serial bus interface compatible with i 2 c protocol. slave address is selectable by pin adr. afe_cnt sequencer of sensor afe, c/v converter and a/d. pwm_c nt pwm timers for the led ports. leddrv led port drivers. wdtr watchdog t imer timeout reset. it releases the system reset after 0.6sec from that mpu cannot clear wdtr. (if mpu cannot clear wdtr, mpu is hung up.) prom program rom for the included mpu. wram work ram for the included mpu. figure 6. block diagram l d o 1 5 l d o 2 8 v r e f o s c s e n s o r a f e c / v c o n v e r t e r a / d a v d d d v d d s i n 0 - 4 l e d 0 - 4 l o g i c a f e m p u w r a m p r o m l e d d r v v d d v s s s d a s c l t e s t a f e _ c n t p w m _ c n t i n t d t g w d t r p o r h o s t i / f a d r
b u21170muv 4 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 absolute maximum ratings (ta= 25 c ) parameter symbol rating unit power s upply v oltage v dd - 0.5 to 7.0 v i nput v oltage v in - 0.3 to v dd +0.7 v power dissipation ( note 1 ) p d 0.55 w operating temperature range t opr - 25 to +85 c storage temperature range t stg - 5 5 to + 1 25 c maximum junction temperature t jmax 125 c (note 1) mounted on 74.2mm x 74.2mm x 1.6mm glass epoxy 1layer board ( copper foil area : 10.2 9mm 2 ) . reduce 5. 5 mw per 1 c above 25 c caution: operating the ic ove r the absolute maximum ratings may damage the ic. the damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. therefore, it is important to consider circuit protection measures, such as adding a fuse, i n case the ic is operated over the absolute maximum ratings. recommended operating conditions parameter symbol min typ max unit power s upply v oltage v dd 3.0 3.3 5. 5 v electrical characteristics ( v dd = 3.3 v , v ss =0v , ta=25 c , unless otherwise specified. ) parameter symbol min typ max unit condition input high voltage v ih v dd x 0.7 - v dd + 0. 3 v input low voltage v il v ss - 0. 3 - v dd x 0. 3 v output high voltage v oh v dd - 0. 5 - v dd v i oh = - 4ma output low voltage v ol v ss - v ss + 0. 5 v i o l = 4ma oscill ator clock frequency f osc 45 50 55 mhz dvdd ldo output voltage v dvdd 1.35 1.50 1.65 v a vdd ldo output voltage v avdd 2.63 2.73 2.83 v power - on - reset release voltage 2.25 - 2.55 v power - on - reset detect voltage 2.10 - 2.40 v operating current i dd - 3.5 - ma without load of sensors.
b u21170muv 5 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 register map ( osc = 50mhz , unless otherwise noted ) no accessing to the reserved areas is allowed.
b u21170muv 6 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0x00 - 0x04 : sensor data name: sin_data address: 0x00 - 0x04 description: this registers shows 8bit adc value of each sensor. bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x00 sd_sin0[7:0] 0x01 sd_sin1[7:0] 0x02 sd_sin2[7:0] 0x03 sd_sin3[7:0] 0x 04 sd_sin4[7:0] r/w r r r r r r r r initial val. 0 0 0 0 0 0 0 0 0x0e : state of the peripheral pwm timer name: state_pwm address: 0x0e description: 1 : the pwm timer is running. pwm state is on
b u21170muv 7 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0x10 : i nterrupt factor name: interrupt address: 0x10 description: this register shows the interrupt factors. port int outputs this register
b u21170muv 8 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0x11 : detection switch - on name: detect_on address: 0x11 description: this register indicates the change to o n from o ff of each switch. if the mask for the on operation included in the sensor settings is enabled, this register is disabled. l ogical or of this register is ondet included
b u21170muv 9 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0x1b : state of interrupt from the peripherals name: state_int address: 0x1b description: this register shows the peripheral which issues an interrupt to m pu . 1 : interrupt is . 0 : interrupt is not. bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x1b pwm3 pwm2 pwm1 pwm0 wdt - afe i2c r/w r r r r r - r r initial val. 0 0 0 0 0 0 0 0 0x1c : state of ic name: state address: 0x1c description: this register indicates the state of ic. indicates whether the ic is in calibration or no t. 1 : in calibration. 0 : not in calibration the required time for calibration. 9? about 140 msec. bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0 0x1c - - - - - - - calib r/w - - - - - - - r initial val. 0 0 0 0 0 0 0 0 0x1d : sensor state name: s tate_sin address: 0x1d description: this register indicates the state of each sensor 1 : switch - on. (register
b u21170muv 10 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0xc0 - 0xce : sensor settings name: sin_cfg address: 0xc0 C gain_sin 0xf
b u21170muv 11 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0xd0 : configuration continuous touch name: conttimes address: 0xd0 description: contsel 9? this register is to select the interrupt frequency by detection continuous touch. 1 : every continuous touch period. 0 : first detect only. cont[5:0] 9? c ontinuous touch period is about 0.1 [ sec ] x cont. if the setting value is 0x0, conti nuous touch function is disable. (0.1sec factor
b u21170muv 12 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0xe0 - 0xeb : configuration of pwm name: pwm_cfg address: 0xe0 C adjustment range : 0x0 ris_pwm 0xf adjustment range : 0x0 fal_pwm 0xf 4755 adjustment range : 0x1 ris_pwm 0xf. 0xf
b u21170muv 13 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0xed - 0xee : led - pwm assign name: pwm_assign address: 0xed C percal pwmcal 0 not performed 1 performed 0 1 0 1 0 1 not performed performed not performed periodical calibration 0 1 bit state conditions state of the led port assigned to pwm function with flashing by pwm drive. without flashing by pwm drive. 0 1
b u21170muv 14 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0xf0 : clear interrupt name: clr_interrupt address: 0 xf0 description: clear interrupt register. ini : clear int errupt of initialization finish : clear the ini interrupt by writing
b u21170muv 15 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0xf4 : clear interrupt of pwm continuous flashing name: clr_detect_pwm_finish a ddress: 0xf4 description: detect_pwm_finish clear register. clear the detect_ pwm _finish by writing
b u21170muv 16 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 0xfe : write register for o peration check of ic name: wact address: 0xfe description: this register is a write register for operational check of the ic. this register
b u21170muv 17 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 timing charts host interface 2 - wire serial bus. compatible with i 2 c protocol. support slave mode only. 7 - bit slave address = 0x4c ( i n the case of adr = s d a t l o w t h d ; s t a s c l r e p e a t e d s t a r t c o n d i t i o n t h d ; d a t t h i g h t h d ; s t a t s u ; s t a t s u ; d a t t b u f t s u ; s t o s t o p c o n d i t i o n s t a r t c o n d i t i o n s t a r t c o n d i t i o n s 1 - 7 8 9 p 1 - 7 8 9 1 - 7 8 9
b u21170muv 18 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 scan rate after scan each sensor in time series, mpu convert to the switch operations from the detected results. one scan rate is about 14.8msec at typical. sa : slave address ra : register address rd : read data wd : write data fig ure 1 0. 2 - wire serial bus protocol fig ure 1 1. timing chart of scan rate sin0 sin1 sin2 sin3 sin4 data update scan rate = 14.8msec (osc = 50mhz) n byte write s w a a a s t r c c c t a i k k k o r t p t e s s s s s s s r r r r r r r r w w w w w w w w a a a a a a a a a a a a a a a d d d d d d d d 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 n random read s w a a s r a n s t r c c t e c a t a i k k a a k c o r t r d k p t e t s s s s s s s r r r r r r r r s s s s s s s r r r r r r r r a a a a a a a a a a a a a a a a a a a a a a d d d d d d d d 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 n sequential read s w a a s r a a a n s t r c c t e c c c a t a i k k a a k k k c o r t r d k p t e t s s s s s s s r r r r r r r r s s s s s s s r r r r r r r r r r r r r r r r r r a a a a a a a a a a a a a a a a a a a a a a d d d d d d d d d d d d d d d d d d 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 0 7 6 5 4 3 2 1 0 read data (n+x) (= 0x4c or 0x4d) (= 0x4c or 0x4d) (= 0x4c or 0x4d) (= 0x4c or 0x4d) (= 0x4c or 0x4d) read data (n) register address (n) address slave (n) read data address (n) address write data (n) slave register address (n) register address slave address slave address slave
b u21170muv 19 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 power on sequence power suppl y pin is vdd only. avdd and dvdd are supplied by each ldo included this ic, so that have no priority about power on sequence. when vdd reaches to the effective voltage, power - on - reset which initializes the digital block is released. power - on - reset is monit oring vdd, so it needs that decoupling capacitor vdd power on reset (activelow) initialize ic about 300usec hi-z about 100usec port led interrupt of initialization done port int c 1 v d d v d d v s s g n d d v d d a v d d b u 2 1 1 7 0 m u v c 2 c 3
b u21170muv 20 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 initialize oper ation this ic is initialized and all registers are cleared by power - on reset, wdt time - out reset, and software reset command. when initialization is complete, the register ini is set to p o w e r s u p p l y e f f e c t s o f t w a r e r e s e t o u t b r e a k w d t t i m e o u t i n t a n d i n t e r r u p t f o r c o m p l e t i o n o f i n i t i a l i z a t i o n ( r e g i s t e r i n t e r r u p t b i t i n i ) = 1 f i n i s h i n i t i a l i z a t i o n c l e a r i n t e r r u p t f o r c o m p l e t i o n o f i n i t i a l i z a t i o n ( r e g i s t e r ) y e s n o
b u21170muv 21 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 calibration self - calibration self - calibration is performed by this ic automatically. it is performed in the following cases. 1. detect drift con diti on : when the ic detects the drift condition, the ic acts self - calibration. when calibration is complete, the interrupt factor register cal is set to
b u21170muv 22 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 interrupt when multi cal ibration factor occur s the calibration of the four factors to carry out the calibration is different respectively. therefore, state the calibration of another is started during the conduct of certain calibration, the conflict occurs. if the calibration dif ferent conditions occur in the middle of the calibration, calibration being performed to stop, a new calibration is carried out from the beginning. the interrupt by finishing the first factor calibration factor occurs. calibration factor occurs. start calibration by factor . start calibration by factor . interrupt calibration finish of factor . interrupt calibration finish of factor .
b u21170muv 23 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 switch operation every sensor is used for simple switch. each switch has the registers of detected touch/release/hold operations. every s witch support s to multi - detect touch/release/hold. unused switches are maskable. figure 1 8 . interrupt of switch operation (1) figure 1 9 . interrupt of switch operation (2) case1 long push setting contsel = 1 sin0(sensor on/off b key on recognition(sw0) key long push recognition(sw0) key off recognition(sw0) port int case2 long push setting contsel = 0 sin0(sensor on/off b key on recognition(sw0) key long push recognition(sw0) key off recognition(sw0) port int setting of long push time setting of long push time send clear command for interrupt of sw0 on send clear command for interrupt of sw0 long push send clear command for interrupt of sw0 off setting of long push time send clear command for interrupt of sw0 on send clear command for interrupt of sw0 long push send clear command for interrupt of sw0 off sin0(sensor on/off b key on recognition(sw0) key off recognition(sw0) sin1(sensor on/off b key on recognition(sw1) key off recognition(sw1) port int send clear command for interrupt of sw1 off send clear command for interrupt of sw1 on send clear command for interrupt of sw0 on send clear command for interrupt of sw0 off
b u21170muv 24 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 i nterrupt of pwm continuous flashin g when pwm configuration is set to not always lights, pwm drive repeat as many times as the setting value. the interrupt is r eleased at finishing pwm drive. in the case that pwm always lights, the way to turn pwm off is to write
b u21170muv 25 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 operational n otes 1. reverse c onnection of p ower s upply connecting the power supply in reverse polarity can damage the ic. take pr ecautions against reverse polarity when connecting the power supply , such as mounting an external diode between the power supply and the ic
b u21170muv 26 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 12. regarding the i nput p in of the ic in the construction of this ic, p - n junctions are inevitably formed creating parasitic diodes or transistors. the operation of these parasitic elements can result in mutual interference among circuits, operational faults, or physica l damage. therefore, conditions which cause these parasitic elements to operate, such as applying a voltage to an input pin lower than the ground voltage should be avoided. furthermore, do not apply a voltage to the input terminals when no power supply vol tage is applied to the ic. even if the power supply voltage is applied, make sure that the input terminals have voltages within the values specified in the electrical characteristics of this ic. 13. ceramic capacitor when using a ceramic capacitor, determine the dielectric constant considering the change of capacitance with temperature and the decrease in nominal capacitance due to dc bias and others. 14. area of safe operation (aso) operate the ic such that the output voltage, output current, and power dissipati on are all within the area of safe operation (aso).
b u21170muv 27 / 2 9 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 ordering information b u 2 1 1 7 0 m u v - e 2 part n umber package muv: vqfn020v4040 packaging and forming specification e2: embossed tape and r eel marking diagram vqfn020v4040 (top view) 21 170 part number marking lot number 1pin mark b u
b u21170muv 28 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 physical dimension , tape and reel information package name v qfn020v4040
b u21170muv 29 / 29 tsz02201 - 0 l5l0f3008 3 0 - 1 - 2 ? 20 13 rohm co., ltd. all rights reserved. 14.jul.2016 rev.002 www.rohm.com tsz22111 n 15 n 001 revision history date revision changes 3 1. oct .2013 001 new release 14 .ju l .2016 002 p3 figure 6 . block diagram correct wiring error to the block por. p 7 correct clerical error (old) couth (new) touch p 7 correct clerical error (old)
notice - p ga - e rev.00 3 ? 201 5 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. our p roducts are designed and manufactured for application in ordinary electronic equipment s ( such as av equipment, oa equipment, telecommunication equipment, home elec tronic appliances, amusement equipment, etc.). if you intend to use our products in devices requiring extremely high reliability ( such as medical equipment ( n ote 1 ) , transport equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, f uel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life , bodily injury or serious damage to property ( specific applications ) , please consult with the rohm sales represe ntative in advance. unless otherwise agreed in writing by rohm in advance, rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any rohm s products for specific appl ications. ( n ote1) m edical e quipment c lassification of the s pecific applications japan usa eu china class 2. rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a certain rate. please be sure to implement, at your own responsi bilities, adequate safety measures including but not limited to fail - safe design against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following are examples of safety measures: [a] installation of protection circuits or other protective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. our p roducts are designed and manufactured for use under standard conditions a nd not under any special or extraordinary environments or conditions, as exemplified below . accordingly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any rohms p roduct s under any special or extraordinary environments or conditions . if you intend to use our products under any special or extraordinary environments or conditions (as exemplified below), your independent v erification and confirmation of product performance, reliability, etc, pri or to use, must be necessary : [a] use of our products in any types of liquid, including water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the p roducts are exposed to direct sunlight or dust [c] use of our prod ucts in places where the p roducts are exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the p roducts are exposed to static electricity or electromagnetic waves [e] use of our products in p roximity to heat - producing components, plastic cords, or other flammable items [f] s ealing or coating our p roducts with resin or other coating materials [g] use of our products without cleaning residue of flux (even if you use no - clean type fluxes, cleanin g residue of flux is recommended); or washing our products by using water or water - soluble cleaning agents for cleaning residue after soldering [h] use of the p roducts in places subject to dew condensation 4 . the p roducts are not subject to radiation - proo f design . 5 . please verify and confirm characteristics of the final or mounted products in using the products. 6 . in particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of pe rformance characteristics after on - board mounting is strongly recommended. avoid applying power exceeding normal rated power; exceeding the power rating under steady - state loading condition may negatively affect product performance and reliability. 7 . de - rate power dissipation d epending on a mbient temperature . when used in sealed area, confirm that it is the use in the range that does not exceed the maximum junction temperature. 8 . confirm that operation temperature is within the specified range described in the product specification. 9 . rohm shall not be in any way responsible or liable for f ailure induced under devian t condition from what is defined in this document . precaution for mounting / circuit board design 1. when a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. in principle, the reflow soldering method must be used on a surface - mount products, the flow soldering method must be used on a through hole mount products. i f the flow soldering method is preferred on a surface - mount products , please consult with the roh m representative in advance. for details , please refer to rohm mounting specification
notice - p ga - e rev.00 3 ? 201 5 rohm co., ltd. all rights reserved. precautions regarding application examples and external circuits 1. if change is made to the constant of an external circuit, please allow a sufficient margin considerin g variations of the characteristics of the p roducts and external components, including transient characteristics, as well as static characteristics. 2. you agree that application notes, reference designs, and associated data and information contained in t his document are presented only as guidance for products use . therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in t his document. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this p roduct is e lectrostatic sensitive product, which may be damaged due to e lectrostatic discharge. please take proper caution in your manufacturing process and stor age so that voltage exceeding the product s maximum rating will not be applied to p roducts. please take special care under dry condition (e .g. grounding of human body / equipment / solder iron, isolation from charged objects, setting of ionizer, friction prevention and temperature / humidity control). precaution for storage / transportation 1. product performance and soldered connections may deteriorate if the p roducts are stored in the places where : [a] the p roducts are exposed to sea winds or corrosive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to direct sunshine or condensation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage condition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm solderability before using p roducts of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the correct direction, which is indicated on a carton with a symbol. otherwise bent leads may occur due to excess ive stress applied when dropping of a carton. 4. use p roducts within the specified time after opening a humidity barrier bag. baking is required before using p roducts of which storage time is exceeding the recommended storage time period . precaution for p roduct l abel a two - dimensional barcode printed on rohm p roduct s label is for rohm s internal use only . precaution for d isposition when disposing p roducts please dispose them properly using a n authorized industry waste company. precaution for foreign e xchange and foreign t rade act since concerned goods might be fallen under listed items of export control prescribed by foreign exchange and foreign trade act, please consult with rohm in case of export. precaution regarding intellectual property rights 1. all information an d data including but not limited to application example contained in this document is for reference only. rohm does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party reg arding such information or data. 2. rohm shall not have any obligations where the claims, actions or demands arising from the combination of the products with other articles such as components, circuits, systems or external equipment (including software). 3. no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the products or the information contained in this document. provided, however, that rohm will not assert it s intellectual property rights or other rights against you or your customers to the extent necessary to manufacture or sell products containing the products, subject to the terms and conditions herein. other precaution 1. this document may not be reprinted or reproduced, in whole or in part, without prior written consent of rohm. 2. the products may not be disassemble d, converted, modified, reproduced or otherwise changed without prior written consent of rohm. 3. i n no event shall you use in any way whatso ever the products and the related technical information contained in the products or this document for any military purposes , including but not limited to, the development of mass - destruction weapons . 4. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties.
datasheet datasheet notice ? we rev.001 ? 2015 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information.
datasheet part number BU21170MUV package vqfn020v4040 unit quantity 2500 minimum package quantity 2500 packing type taping constitution materials list inquiry rohs yes BU21170MUV - web page

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