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  1 AN33016UA ver. aeb z 1-channel dc-dc step down regulator circuit that employs voltage mode switching control system z internal reference voltage is within 1% accuracy z input voltage range : pvcc , vcc: 5 v ~ 39 v z adjustable output voltage range with external resistor : 1.2 v ~ 9 v z adjustable switching frequency with external resistor : 200 khz ~ 2 mhz z standby mode consumes less than 1 a current z output over voltage protection function z output ground short protection function z over current protection with adjustable threshold. z under voltage lockout function (vreg) z thermal shut down function z adjustable soft-start function z ssop024-p-0300f ( size : 7.8 mm x 8.1 mm, 0.65 mm pitch ), 24pin plastic shrink small outline package (ssop type) high input voltage power systems such as ? car-audio system ? car-navigation system ? oa equipment ? home appliances etc. simplified application applications features description vin = 5 to 39 v, vout = 1.2 to 9 v, 1-channel dc-dc step down regulator integrated n-channel power mosfet AN33016UA is 1-channnel dc-dc step down regulator integrated n-channel power mosfet and employs the voltage mode switching control system. this ic can be operated with wide input voltage range and is build in several protection functions, so this ic can provide high reliability power supply system. since it is possible to use up to 2 mhz switching frequency and it is unnecessary to add external parts for high side switch, this ic realizes downsizing of set and reducing in the number of external parts. output voltage is adjustable by user. maximum current is 1.5 a. notes) this application circuit is an example. the operation of mass production set is not guaranteed. you should perform enough evaluation and verification on the design of mass production set. you are fully responsible for the incorporation of the above application circuit and information in the design of your equipment. condition ) vin = 6 , 12 , 25 v, vout = 5 v, lo = 10 h, co = 22 f, frequency = 490 khz 0 10 20 30 40 50 60 70 80 90 100 0 300 600 900 1200 1500 iload (ma) efficiency (%) vcc=6v vcc=12v vcc=39v dcdcout ss en bt lx1/2 vreg AN33016UA sgnd vcc_s fb pvin pvcc1/2 vcc pgnd btvcc comp rt 24pf 7.5k 2.2nf 7.5k 30k 20m 22 f 0.1 f 130k 0.1 f 1.0 f efficiency curve publication date: october 2012
2 AN33016UA ver. aeb absolute maximum ratings *1 notes 0.481 w 0.925 w 135.1 c / w 24 pin plastic shrink small outline package (ssop type) pd ( ta = 85 c) pd ( ta = 25 c) ja package power dissipation rating note). for the actual usage, please refer to the pd-ta characteristics diagram in the package specification, follow the power s upply voltage, load and ambient temperature conditions to ensure that there is enough margin and the thermal design does not exceed the allowable value. *1:glass epoxy substrate(4 layers) [glass-epoxy: 50 x 50 x 0.8t(mm)] caution although this has limited built-in esd protection circuit, but permanent damage may occur on it. therefore, proper esd precautions are recommended to avoid electrostatic damage to the mos gates *1 v -0.3 to 5.5 flag output voltage range *1 *5 v ? 0.3 to ( vcc + 0.3 ) lx1,lx2 *1 *4 v -0.3 to (vcc+vreg) bt input voltage range *1 *3 v (vcc-5.5) to (vcc+0.3) vcc_s,rs input voltage range *1 *5 v -0.3 to (vcc+0.3) en input voltage range *1 v -0.3 to 5.5 fb,btvcc,tl_ctrl,sync input voltage range ? v 200 mm (machine model) ? kv 2 hbm (human body model) esd *2 c ? 40 to + 150 t j operating junction temperature *2 c ? 55 to + 150 t stg storage temperature notes unit rating symbol parameter *2 c ? 40 to + 85 t opr operating free-air temperature *1 v 40 vcc supply voltage notes) do not apply external currents and voltages to any pin not specifically mentioned. this product may sustain permanent damage if subjected to conditions higher than the above stated absolute maximum rating. this rating is the maximum rating and device operating at this range is not guaranteeable as it is higher than our stated recommended operating range. when subjected under the absolute maximum rating for a long time, the reliability of the product may be affected. vcc is voltage for vcc, pvcc1 and pvcc2. vcc = pvcc1 = pvcc2. *1:the values under the condition not exceeding the above absolute maximum ratings and the power dissipation. *2:except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for ta = 25 c. *3:( vcc ? 5.5 ) v must not be exceeded ? 0.3 v, and ( vcc + 0.3 ) v must not be exceeded 60 v *4:( vcc + vreg ) v must not be exceeded 60 v *5:( vcc + 0.3 ) v must not be exceeded 60 v
3 AN33016UA ver. aeb recommended operating conditions *1 *4 v vcc + 0.3 ? ?0.3 en input voltage range rs vcc_s pvcc2 *1 *3 v vcc + vreg ? ?0.3 input voltage range vcc btvcc fb *1 v 5.5 ? ?0.3 tl_ctrl input voltage range sync bt *1 *4 v vcc + 0.3 ? ?0.3 lx1,lx2 output voltage range input voltage range *1 v 5.5 ? ?0.3 flag v vcc + 0.3 ? vcc ? 5.5 output voltage range 12 typ. *1 *2 5 min. *1 v 25 pvcc1 supply voltage range notes unit max. pin name parameter note) do not apply external currents and voltages to any pin not specifically mentioned. voltage values, unless otherwise specified, are with respect to gnd. gnd is voltage for sgnd, pgnd. sgnd = pgnd vcc is voltage for vcc, pvcc1 and pvcc2. vcc = pvcc1 = pvcc2. *1 : the values under the condition not exceeding the above absolute maximum ratings and the power dissipation. *2:( vcc ? 5.5 ) v must not be exceeded ? 0.3 v, and ( vcc + 0.3 ) v must not be exceeded 60 v *3:( vcc + vreg ) v must not be exceeded 60 v *4:( vcc + 0.3 ) v must not be exceeded 60 v
4 AN33016UA ver. aeb ? khz 2000 ? 200 f out2 oscillator frequency range ? v ? ? 2.0 ? v ih1 high input threshold ? a 70 33 ? en = 3.3 v v ic1 en terminal input current ? v 0.45 0.3 0.15 monitor fb v scp short detection voltage gnd short protection ? v 5.3 5.0 4.5 c reg = 1 f v reg internal regulator output voltage internal regulator ? khz 730 ? 520 rt = 130 k fout1 = 490 khz f sync external sync frequency range ? khz 515 490 465 rt = 130 k f out1 oscillator frequency oscillator *1 mv 84 75 66 (vcc_s-vrs) v ocp over-current threshold voltage over-current protection ? v 50 45 40 for vcc v ovp2 over-voltage threshold voltage for vcc ? v 1.30 1.22 1.14 for fb v ovp1 over-voltage threshold voltage for vfb over-voltage protection ? v 0.4 ? ? ? v il1 low input threshold enable (en) ? v ? ? 2.0 ? v ih2 high input threshold ? v 0.4 ? ? ? v il2 low input threshold synchronization (sync) ? v 1.01 1.0 0.99 fb connected to comp with gain of 1.5 times v ref feedback voltage bgr current consumption ? a 1 0.01 ? en = low i stby standby current ? ma 1.4 1.0 ? no switching fb = 1.1 v en = high (3.3 v) i cq quiescent current limits typ unit max note min condition symbol parameter elecrtrical characteristics co = 22 f, lo= 10 h, vout setting = 5.0 v, v cc = 12 v, rt = 130 k , t a = 25 c 2 c unless otherwise noted. note) *1 : this parameter is tested with dc measurement.
5 AN33016UA ver. aeb pin functions connect to an external inductor and schottky diode output lx2 24 power ground pin ground pgnd 23 connect to an external capacitor for boot strap input bt 22 boot strap input pin input btvcc 21 connect to an external inductor and schottky diode output lx1 1 connect to an external capacitor for adj ustment of over-current detection time output tl 20 error flag output pin output flag 19 connect to high to disable shut-down function by ocp/scp input tl_ctrl 18 external clock input for adjustment of oscillation frequency input sync 17 enable pin input en 16 no connection ? nc 8 power supply pin power supply vcc 7 vcc pin connection to current sensing port for ocp input vcc_s 6 connection to current sensing port for ocp input rs 5 no connection ? nc 2 connect to an external resistor for adjustment of oscillation frequency output rt 14 soft-start capacitor connection pin output ss 13 error amplifier negative input input fb 12 error amplifier output output comp 11 ground pin ground sgnd 10 connect to an external capacitor for internal regulator output vreg 9 power supply pin for internal driver power supply pvcc1 3 power supply pin for internal driver power supply pvcc2 4 low pass filter function pin for pll output ct 15 description type pin name pin no. notes) concerning detail about pin description, please refer to operation and application information section. pin configuration top view lx1 nc. pvcc1 pvcc2 rs vcc_s vcc nc. vreg sgnd comp fb lx2 pgnd bt btvcc tl flag tl_ctrl sync en ct rt ss 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13
6 AN33016UA ver. aeb functional block diagram notes) this block diagram is for explaining functions. part of the block diagram may be omitted, or it may be simplified. osc 13 ss eramp ocp cnt en 16 12 fb 11 comp 10 sgnd 5 rs 6 vcc_s vreg 9 tl_ctrl 18 flag 19 sync 17 rt 14 sst pw m pridrv pvcc vcc 7 22 bt 1 lx1 tl 20 15 ct 3 pvcc1 btvcc 21 pll 4 pvcc2 n.c. 2 n.c. 8 24 lx2 ovp scp vreg vref (bgr) tsd uvlo ovp (vcc) 23 pgnd timer latch
7 AN33016UA ver. aeb AN33016UA consists of one channel and it c an be turned on and off by using the en pin. en > 2.0 v : enabled en < 0.4 v : disabled 1.power on sequence : ? vcc rises to a desired voltage level. (a 10 ms rise time or more is recommended to control and limit any abnormal current flow via the power transistor when vcc is rising.) ? apply a voltage level of 2.0 v or higher at en pi n after vcc is steady and the dcdc will begin to operate. (it is possible to connect the en pin to vcc thr ough a resistor, and, in that case, when vcc rises, dcdc will begin to operate.) ? when vreg voltage reaches 4.9 v and above, and after a delay time (charging time of the soft start capacitor) decided by an external capacitor, the dcdc will start to operate. 2.power off sequence : ? to turn off the dcdc output, apply a voltage of 0.4 v or lower to en pin. ? vout will drop after en pin becomes low. (the discharge time is dependent on the applied load current and the feedback re sistance connected at the output.) ? the dcdc will turn off if the vcc level becomes low even before en pin becomes low. the above scenario occurs when the vreg voltage decreases to 4.0 v or less. (however, the dcdc output voltage will also decrease wi th vcc when the vcc level drops below a certain minimum level required to maintain the output voltage level.) 3.points to take note of when re-starting the dcdc : ? please allow a waiting time of 10 ms or more fo r the discharge time of t he soft start capacitor when starting up the dcdc again after turning it off. the output voltage might overshoot without the soft start function working properly if the dcdc is re-started immediately after it is turned off. 4. points to take note of when shut down: ? please apply a voltage of low level or lower to en pin when turn off the dcdc. operation 1. power on/off sequence note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed.
8 AN33016UA ver. aeb ? on/off operation sequence by en pin control. note) all values given in the above figure are typical values. 2. start / stop control timing chart note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. operation (continued) figure power on/off sequence by en v cc en v out v reg ss t 4.3 v 2.2 v 10 s or more
9 AN33016UA ver. aeb ? on/off operation sequence by vcc pin co ntrol (en pin is connected to vcc). note) all values given in the above figure are typical values. note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. operation (continued) figure power on/off sequence by vcc/en v cc en v out v reg ss t 4.3 v 2.2 v 4.0 v 2.0 v 10 s or more 2. start / stop control timing chart
10 AN33016UA ver. aeb the output voltage of AN33016UA is set with the external feedback resistance divider arranged between the terminal fb and gnd between the dcdc output and the terminal fb. the output voltage is decided depending on the following equation. operation (continued) 3. output voltage setting note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. ? ? ? ? ? ? + = rb ra vout 1 0 . 1 minduty is decided by the minimum on time. the minimum on ti me, ton (min), is the time t hat this ic can turn on the high side switch. this is decided by the gate capacitance of the high side switch and the internal timing delay. the following attention is necessary becaus e in applications where the input/out put voltage difference is great, and the switching frequency is high, there is a possibility to r each the limiting value of the minimum on time. the minimum on time, ton (min), is about 200ns (max). this ic has the function of maxduty, which will not exce ed a certain definite value for safety reasons in case of abnormal circumstances. the following attention is necess ary because in applications wh ere the input/output voltage difference is close, and the switching frequ ency is high, there is a possibility to reach the limiting value of the minimum off time. the minimum off time, toff (min), is about 200ns (max). 4. min/max duty operation note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. f vin vout ton 1 (min) < f vin vout toff 1 ) 1 ( (min) ? < *) f switching frequency when operating near the min/max limited duty, the ripple vo ltage and the inductor current ripple increases even if the output voltage is stabilized. it is recommended to use on the condition when the turn on switching time and turn off switching time are 200ns or more. *) please take note of the output voltage setting when the switching frequency is high.
11 AN33016UA ver. aeb the switching frequency of the built-in oscillator circui t can be set from 200 khz to 2000 khz, determined by the resistance of the terminal rt, set by external resistance. the setting accuracy of the frequency is approximately 5%. the equation and the corresponding table are described as follows. operation (continued) 5. oscillation frequency note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. figure switching frequency vs external resistance 187 360 737 82 205 330 799 75 225 300 873 68 248 270 943 62 272 240 1024 56 301 220 1099 51 329 200 1176 47 361 180 1265 43 404 160 1365 39 430 150 1448 36 490 130 1550 33 525 120 1661 30 572 110 1789 27 622 100 1950 24 675 91 2067 22 osc frequency (khz) rt [k ] osc frequency (khz) rt [k ] osc frequency vs rt 0 200 400 600 800 1000 1200 1400 1600 1800 2000 0 50 100 150 200 250 300 350 400 rt [k] osc frequency [khz]
12 AN33016UA ver. aeb over-current protection function (ocp) turns off the powe r mos in ic when the voltage difference of the external resistance rsense exceeds 75mv(typ.) to stop the supply of current from vcc to vout. detection current isense can be calculated as: isense = 75 mv / rsense the over-current protection function oper ates via pulse-by-pulse control, and duty is limited during the over-current protection period. moreover, because t he over-current detects the peak curr ent that flows through rsense, it is necessary to convert it from desired output current iout value (refer to figure ). equation is shown below. operation (continued) 6. over-current protection note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. comp vcc logic vout powermos iout rload rsense figure over-current protection circuit block diagram inductor current il average current=iout isense iout detected current level isense) ihigh ilow figure method of detection of over-current protection function vcc l f vout vcc vout iout rsense ? ? ? ? ? + 2 ) ( 075 . 0
13 AN33016UA ver. aeb applications information figure : application circuit figure : top layer with silk screen ( top view ) with evaluation board figure : bottom layer with silk screen ( bottom view ) with evaluation board 13 ss ext.clk en 16 12 fb 11 comp 10 sgnd 5 rs 6 vcc_s vreg 9 tl_ctrl 18 flag 19 sync 17 rt 14 vcc 7 22 bt 1 lx1 tl 20 15 ct pull-up 3 pvcc1 btvcc 21 4 pvcc2 n.c. 2 n.c. 8 24 lx2 23 pgnd rflag rt1 rrs l1 d1 cout1 cvcc1 cvcc2 cvcc3 cct ctl cvreg css rc1_5+rc1_6 rc1_3+rc1_4 rc1_2 cc1_3 cc1_2 rc1_1 cc1_1 cbt notes) this application circuit and layout is an example. the oper ation of mass production set is not guaranteed. you should perform enough evaluation and verification on the design of mass production set. you are fully responsible for the incorporation of the above application circuit and information in the design of your equipment.
14 AN33016UA ver. aeb applications information ( continued ) figure : recommended component compensation capacitor murata 24pf gcm1882c1h240ja01j cc1_2 compensation & feedback resistor panasonic r=0 erj3gey0r00v rc1_3 - panasonic r=0 erj3gey0r00v rvreg compensation & feedback resistor panasonic r=7.5k era3aeb752v rc1_6 vreg capacitor murata 1 f gcm188r71c105ka49j cvreg ocp sense resistor panasonic r=30m erj8bwfr030v rrs osc setting resistor panasonic r=130k era3aeb134v rt1,rt2,rt3 pull-up resistor panasonic r=200k era3aeb204v rflag compensation & feedback resistor panasonic r=0 erj3gey0r00v rc1_5 compensation & feedback resistor panasonic r=30k era3aeb303v rc1_4 compensation & feedback resistor panasonic r=1.5k era3aeb152v rc1_2 compensation & feedback resistor panasonic r=7.5k era3aeb752v rc1_1 schottky diode panasonic - db24416 d1 1ch dcdc converter panasonic - an33013ua ic1 inductor sumida 10 h cdrh8d43-100nc l1 output capacitor taiyo,yuden 22 f tmk325c7226mm-t cout1 input capacitor tdk 22 f ckg57nx7r1h226mt cvcc1,cvcc2, cvcc3 compensation capacitor murata 470pf gcm1882c1h471ja01j cc1_3 compensation capacitor murata 2.2nf gcm1882c1h222ja01j cc1_1 setting capacitor murata 0.1 f gcm188r11c104ka01j cbt,cct,css,ctl description maker value part name reference
15 AN33016UA ver. aeb package information ( reference data ) outline drawing unit : mm
16 AN33016UA ver. aeb package information ( reference data ) power dissipation (supplementary explanation)
17 AN33016UA ver. aeb important notice 1.the products and product specificat ions described in this book are subject to change without notice for modification and/or improvement. at the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date product standards in advance to ma ke sure that the latest specifications satisfy your requirements. 2.when using the lsi for new models, verify the safe ty including the long-term reliability for each product. 3.when the application system is designed by using this lsi, be sure to confirm notes in this book. be sure to read the notes to descr iptions and the usage notes in the book. 4.the technical information described in this book is inten ded only to show the main characteristics and application circuit examples of the products. no license is granted in and to any intellectual property right or other right owned by panasonic corporation or any other company. therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information de-scribed in this book. 5.this book may be not reprinted or r eproduced whether wholly or partially, without the prior written permission of our company. 6.this lsi is intended to be used for general electronic equipment. consult our sales staff in advance for information on the following applications: special applications in which exceptional quality and reliability are required, or if the failu re or malfunction of this lsi may directly jeopardize life or harm the human body. any applications other than t he standard applications intended. (1) space appliance (such as artificial satellite, and rocket) (2) traffic control equipment (such as fo r automobile, airplane, train, and ship) (3) medical equipment for life support (4) submarine transponder (5) control equipment for power plant (6) disaster prevention and security device (7) weapon (8) others : applications of which reliabili ty equivalent to (1) to (7) is required it is to be understood that our company sh all not be held responsible for any damage incurred as a result of or in connection with your using the lsi described in this book for any special application, unless our company agrees to your using the lsi in this book for any special application. 7.this lsi is neither designed nor intended for use in aut omotive applications or envir onments unless the specific product is designated by our company as comp liant with the iso/ts 16949 requirements. our company shall not be held responsible for any damage incurred by you or any third party as a result of or in connection with your using the lsi in automotive application, unle ss our company agrees to your using the lsi in this book for such application. 8.if any of the products or technical in formation described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially , those with regard to security export control, must be observed. 9. please use this product in compliance with all applicable la ws and regulations that regula te the inclusion or use of controlled substances, including withou t limitation, the eu rohs directive. our company shall not be held responsible for any damage incurred as a result of your using the lsi not complying with the applicable laws and regulations.
18 AN33016UA ver. aeb usage notes 1. when designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc. ). especially, please be careful not to exceed the range of absolute maximum rati ng on the transient state, such as power-on, power-off and mode-switching. otherwise, we will not be liable for any defect which may arise later in your equipment. even when the products are used within the guaranteed val ues, take into the consideration of incidence of break down and failure mode, possible to occur to semi conductor products. measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are reco mmended in order to prevent physical injury, fire, social damages, for example, by using the products. 2. comply with the instructions for use in order to pr event breakdown and characteristics change due to external factors (esd, eos, thermal stress and mechanical stress) at the time of handling, mo unting or at customer's process. when using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages. 3. pay attention to the direction of lsi. when mounting it in the wrong directi on onto the pcb (printed-circuit-board), it might smoke or ignite. 4. pay attention in the pcb (printed-circuit-board) pattern layout in order to prevent damage due to short circuit between pins. in addition, refer to the pin description for the pin configuration. 5. perform a visual inspection on the pcb before applying power, otherwise damage might happen due to problems such as a solder-bridge between the pins of t he semiconductor device. also, perform a full technical verification on the assembly quality, because the same damage possibly can happen due to conductive substances, such as solder ball, that adhere to the lsi during transportation. 6. take notice in the use of this pr oduct that it might break or occasionally smoke when an abnormal state occurs such as output pin-vcc short (power supply fault), out put pin-gnd short (ground faul t), or output-to-output-pin short (load short) . and, safety measures such as an installation of fuses are recommended becaus e the extent of the above- mentioned damage and smoke emission will depend on the current capability of the power supply. 7. the protection circuit is for maintaining safety agai nst abnormal operation. theref ore, the protection circuit should not work during normal operation. especially for the thermal protection ci rcuit, if the area of safe operation or the absolute maximum rating is momentarily exceeded due to output pin to vcc short (pow er supply fault), or output pin to gnd short (ground fault), the lsi might be damaged before t he thermal protection circuit could operate. 8. unless specified in the product specifications, make sure that negative voltage or excessive voltage are not applied to the pins because the device might be damage d, which could happen due to negative voltage or excessive voltage generated during the on and off timing when the inductive load of a motor coil or actuator coils of optical pick-up is being driven. 9. the product which has spec ified aso (area of safe oper ation) should be operated in aso 10. verify the risks which might be caused by the malfunctions of external components. 11. connect the metallic plates on the ba ck side of the lsi with their respecti ve potentials (agnd, pvin, lx). the thermal resistance and the electrical characteristics ar e guaranteed only when the meta llic plates are connected with their respective potentials.
request for your special attention and precautions in using the technical information and semiconductors described in this book (1) if any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially, those with regard to security export control, must be observed. (2) the technical information described in this book is intended only to show the main characteristics and application circuit examples of the products. no license is granted in and to any intellectual property right or other right owned by panasonic corporation or any other company. therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information described in this book. (3) the products described in this book are intended to be used for general applications (such as office equipment, communications equipment, measuring instruments and household appliances), or for specific applications as expressly stated in this book. consult our sales staff in advance for information on the following applications: ? special applications (such as for airplanes, aerospace, automotive equipment, traffic signaling equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. it is to be understood that our company shall not be held responsible for any damage incurred as a result of or in connection with your using the products described in this book for any special application, unless our company agrees to your using the products in this book for any special application. (4) the products and product specifications described in this book are subject to change without notice for modification and/or im- provement. at the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date product standards in advance to make sure that the latest specifications satisfy your requirements. (5) when designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc.). especially, please be careful not to exceed the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. otherwise, we will not be liable for any defect which may arise later in your equipment. even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products. (6) comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (esd, eos, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. when using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages. (7) this book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company. 20100202


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