View AS1331-BTDT-25_8471753.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

austriamicrosystems ag is now ams ag the technical content of this austriamicrosystems datasheet is still valid. contact information: headquarters: ams ag tobelbaderstrasse 30 8141 unterpremstaetten, austria tel: +43 (0) 3136 500 0 e - mail: ams_sales @ams.com please visit our website at www.ams.com
as1331 300ma buck-boost synchronous dc/dc converters www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 1 - 16 datasheet 1 general description this special device is a synchronous buck-boost dc/dc converter which can handle input voltages above, below, or equal to the output voltage. due to the internal structure of the as1331 which is workin g continuously through all operation modes this device is ideal for dual or triple cell alkaline/nicad/nimh as well as single cell li-ion battery applications. because of the implemented power save mode, the solu tion footprint and the component count is minimized and also over a wide range of load currents a high conversion efficiency is provided. the device includes two n-c han nel mosfet switches and two p-channel switches. also following features are implemented: a quiescent current of typically 22a (ideal for battery power applications), a shutdown current less than 1a, current limiting, thermal shutdown and output disconnect. the as1331 is available in a 10-pin 3x3mm tdfn p ackage with fixed and adjustable output voltage. 2 key features input voltage range: 1.8v to 5.5v output voltages: - fixed: 2.5v, 3.0v, 3.3v - adjustable: 2.5v to 3.3v output current: 300ma @ 3.3v up to 90% efficiency power good output disconnection in shutdown automatic transition between buck and boost mode ultra low quiescent current: 22a, shutdown cur- rent <1a (active low) short-circuit protection low battery detection over temperature protection 10-pin 3x3mm tdfn package 3 applications the as1331 is an ideal solution for handheld computers, handheld instruments, portable music players and pda?s. two and three cell alkaline, nicd or nimh or single cell li battery powered products. figure 1. as1331 - typical application diagram 1.8v to 5.5v as1331-ad c 2 22f r 2 r 1 on off c 1 10f pgnd 3 sw2 2 v out 2.5v to 3.3v 6 en 10 fb 5 vin 1 vout sw1 4 l1 6.8h 8 lbo 7 lbi gnd 9 r 3 low battery detect r 4 r 5 ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 2 - 16 as1331 datasheet - pin assignments 4 pin assignments figure 2. pin assignments (top view) pin descriptions table 1. pin descriptions pin name pin number description vout 1 output of the buck/boost converter. sw1 2 buck/boost switch pin. con nect the inductor from sw1 to sw2 pgnd 3 power ground. both gnd pins must be connected. sw2 4 buck/boost switch pin. con nect the inductor from sw1 to sw2. an optional schottky diode can be connect ed between this pin and vout to increase efficiency. vin 5 input supply pin. a minimum 2.2f capacitor should be placed between vin and gnd. en 6 enable pin . logic controlled shutdown input. 1 = normal operation; 0 = shutdown; quiescent current <1a. lbi 7 low battery comperator input . 1.25v threshold. may not be left floating. if connected to gnd lbo is working as output power okay. lbo 8 low battery comperator output . this open-drain output is low when the voltage on lbi is less than 1.25v. gnd 9 ground. both gnd pins must be connected. fb 10 feedback pin . feedback input for the adjustable version. connect a resistor divider tap to this pin. the output voltage can be adjusted from 2.5v to 3.3v by: v out = 1.25v[1 + (r 1 /r 2 )] note: f or the fixed output voltage version contact this pin to v out . nc 11 ex posed pad. this pad is not connected internally. it can be used for ground connection between gnd and pgnd. as1331 sw2 2 sw1 4 vout 1 pgnd 3 lbi 7 lbo 8 gnd 9 fb 10 11 vin 5 en 6 ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 3 - 16 as1331 datasheet - absolute maximum ratings 5 absolute maximum ratings stresses beyond those listed in table 2 may cause permanent damage to the device. these are stress ratings only, and functional operation of the devi ce at these or any other cond itions beyond those indicated in electrical characteristics on page 4 is not implied. exposure to absolute maxi mu m rating conditions for extended periods may affect device reliability. table 2. absolute maximum ratings parameter min max units notes sw1, sw2, vin, vout, en -0.3 +7 v pg nd to gnd -0.3 +0.3 v sw1, sw2 -0.3 +7 v esd 4 kv hbm mil-std. 883e 3015.7 methods thermal resistance ja +33 oc/w junction temperature +150 oc operating temperature range -40 85 oc storage temperature range -65 +125 oc package body temperature +260 oc the reflow peak soldering temperature (body temperature) specified is in accordance with ipc/jedec j-std- 020d ?moisture/reflow sensitivity classification for non-hermetic solid state surface mount devices?. the lead finish for pb-free leaded packages is matte tin (100% sn). ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 4 - 16 as1331 datasheet - electrical characteristics 6 electrical characteristics v in = 3.6v, v out = 3.3v, t amb = -40c to +85oc. typical values are at t amb = +25oc. unless otherwise specified. table 3. electrical characteristics symbol parameter conditions min typ max units input v in input voltage range 1.8 5.5 v minimum startup voltage i load < 1ma 1.6 1.8 v v uv undervoltage lockout threshold 1 v in decreasing 1.5 1.6 1.7 v regulation v out output voltage adjustable version 2.50 3.30 v output voltage 3.3v no load 3.201 3.3 3.399 v output voltage 3.0v 2.910 3.0 3.090 v output voltage 2.5v 2.425 2.5 2.575 v v fb fb voltage adjustable version no load 1.212 1.25 1.288 v i fb fb input current adjustable version v fb = 1.3v, t amb = 25c 1 100 na v out lockout threshold 2 rising edge 2.0 2.15 2.3 v operating current i q quiescent current v in v in = 5v 26a quiescent current v out v in = 5v, v out = 3.6v, v fb = 1.3v 20 32 a i shdn shutdown current en = 0v, v out = 0v, t amb = +25oc 0.01 1 a switches i mos mos switch leakage v in = 5v, t amb =25c, switches a-d 0.01 1 a r on nmos b, c v in = 5v 0.13 pmos a v in = 5v 0.17 pmos d v out = 3.3v 0.21 i peak peak current limit l = 6.8h, v in = 5v 450 600 750 ma enable v enh en input high 1.4 v v enl en input low 0.4 v i en en input current en = 5.5v, t amb = 25c 1 100 na low battery & power-ok v lbi lbi threshold falling edge 1.212 1.25 1.288 v lbi hysteresis 10 mv lbi leakage current lbi = 5.5v, t amb = 25c 1 100 na lbo voltage low 3 i lbo = 1ma 0.05 0.2 v lbo leakage current lbo = 5.5v, t amb = 25c 1 100 na power-ok threshold lbi = 0v, falling edge 90 92.5 95 % ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 5 - 16 as1331 datasheet - electrical characteristics note: all limits are guaranteed. the parameters with min and max values are guaranteed with production tests or sqc (statistical quality control) methods. thermal protection t hermal shutdown 10c hysteresis 145 c 1. if the input voltage falls below this value during normal operation the device goes in startup mode. 2. the regulator is in startup mode until this voltage is reached. caution: do not apply full load current until the device output > 2.3v 3. lbo goes low in startup mode as well as during normal operation if: 1) the voltage at the lbi pin is below lbi threshold. 2) the voltage at the lbi pin is below 0.1v and v out is below 92.5% of its nominal value. table 3. electrical characteristics symbol parameter conditions min typ max units ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 6 - 16 as1331 datasheet - typical operating characteristics 7 typical operating characteristics circuit of figure 24 on page 12 , v in = 2.4v, v out = 3.3v, t amb = +25c, unless otherwise specified. figure 3. efficiency vs. output current; v out = 2.5v figure 4. efficien cy vs. output current; v out = 3.0v 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 output current (m a) efficiency (%) vi n = 1. 8v vi n = 3. 6v vi n = 5. 5v 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 output current (m a) efficiency (%) vi n = 1. 8v vi n = 3. 6v vi n = 5. 5v figure 5. efficiency vs. output current; v out = 3.3v figure 6. efficiency vs. input voltage 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 output current (m a) efficiency (%) vi n = 1. 8v vi n = 3. 6v vi n = 5. 5v 30 40 50 60 70 80 90 100 1.8 2.2 2.6 3.0 3.4 3.8 4.2 4.6 5.0 5.4 input voltage (v) efficiency (%) i out = 10ma i out = 100ma i out = 300ma figure 7. i out max vs. input voltage figure 8. sleep currents vs. input voltage 0 100 200 300 400 500 1.8 2.2 2.6 3.0 3.4 3.8 4.2 4.6 5.0 5.4 input voltage (v) output current max (ma) 0 5 10 15 20 25 30 1.8 2.2 2.6 3.0 3.4 3.8 4.2 4.6 5.0 5.4 input voltage (v) sleep current (a) i vin i vout ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 7 - 16 as1331 datasheet - typical operating characteristics figure 9. i in short circuit vs. input voltage figure 10. v out ripple vs. input voltage 0 5 10 15 20 25 30 1.8 2.2 2.6 3.0 3.4 3.8 4.2 4.6 5.0 5.4 input voltage (v) input current (ma) 0 50 100 150 200 250 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) vout ripple voltage (mv) 10uf / vpp 22uf / vpp 47uf / vpp figure 11. load regulation vs. load current figure 12. v out regulation vs. temperature 3.24 3.26 3.28 3.3 3.32 3.34 3.36 3.38 0.1 1 10 100 1000 load current (ma) output voltage (v) vout - 10uf vout - 22uf vout - 47uf 2 2.25 2.5 2.75 3 3.25 3.5 -45 -30 -15 0 15 30 45 60 75 90 temperature (c) output voltage (v) v out = 3.3v v out = 3.0v v out = 2.5v figure 13. i fb vs. temperature; v in = 5v figure 14. en pin threshold -0.2 -0.1 0 0.1 0.2 0.3 0.4 -45 -30 -15 0 15 30 45 60 75 90 temperature (c) fb input current (a) 3. 6v 5. 0v 5. 5v 0.6 0.7 0.8 0.9 1 -45 -30 -15 0 15 30 45 60 75 90 temperature (c) threshold voltage (v) up-on down-off ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 8 - 16 as1331 datasheet - typical operating characteristics figure 15. v in = 4.4v, v out = 3.3v, i out = 200ma figure 16. v in = 4.4v, v out = 3.3v, i out = 50ma 5s/div 5v/div 200mv/div sw2 i coil sw1 v out 5v/div 200ma/div 5s/div 5v/div 200mv/div sw2 i coil sw1 v out 5v/div 200ma/div figure 17. v in = 3.6v, v out = 3.3v, i out = 200ma figure 18. v in = 3.6v, v out = 3.3v, i out = 50ma 5s/div 5v/div 200mv/div sw2 i coil sw1 v out 5v/div 200ma/div 5s/div 5v/div 200mv/div sw2 i coil sw1 v out 5v/div 200ma/div figure 19. v in = 2.5v, v out = 3.3v, i out = 200ma figure 20. v in = 2.5v, v out = 3.3v, i out = 50ma 5s/div 5v/div 200mv/div sw2 i coil sw1 v out 5v/div 200ma/div 5s/div 5v/div 200mv/div sw2 i coil sw1 v out 5v/div 200ma/div ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 9 - 16 as1331 datasheet - typical operating characteristics figure 21. shorted output; v in = 3.6v figure 22. startup; v in = 3.6v, r load = 3.3k 1s/div 5v/div 200mv/div sw2 i coil sw1 v out 5v/div 200ma/div 500s/div 5v/div 2v/div sw2 i coil sw1 v out 5v/div 200ma/div ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 10 - 16 as1331 datasheet - detailed description 8 detailed description the synchronous buck-boost converter as1331 uses a power save mode control technique to reach a high efficiency over a wide dynamic range of load currents. the output volt age is monitored by a comparator with 3% accuracy. the power save mode puts the device into ?sleep mode? when v out is above its programmed reference threshold. meaning, the switching is stopped and only quiescent current is drawn from the power source. the switching is started again when v out drops below the reference threshold and the output capacitor is charged again. the numbers of current pulses which are necessary to load t he output capacitor are set by the value of the output capacitor, the load current, and the comparator hysteresis (~1%). figure 23. as1331 - block diagram - fixed output voltage modes of operation when v out drops below the reference threshold, the as1331 switches on the transistors sw a and sw c until the inductor current reaches approximately 400ma. in the next step sw a and sw d are closed and depending on the difference between v in and v out the inductor current raises, falls or stays constant. v in > v out : the inductor current is going up to 600ma. v in ~ v out : the device stops after 2s. v in < v out : the inductor current falls down to 0ma. if the inductor current is not 0ma, the transistors sw b and sw d are closed to ramp down the current to zero. if v out is still below the threshold voltag e the next cycle is started. if i max (600ma) wasn?t reached in the previous cycle, sw a and sw d are closed until the inductor current is 600ma. note: the 4-switch-mode (sw a+sw c => sw b+sw d => sw a + sw c...) and also the buck-mode (sw a+sw d => sw b+sw d => sw a+sw d...) are never used. start-up mode at start-up the switch sw d is disabled and its diode is used to transfer current to the output capacitor until v out reaches approximately 2.15v. the inductor current is controlled by an alternate algorithm during start-up. note: do not apply loads >1ma until v out = 2.3v is reached. vin sw1 sw2 sw a sw b sw c sw d v in v in 1.6v 600ma vout pgnd gnd en peak current limit uvlo state machine and logic v best gate drivers and anticross conduction izero detect 1.25v thermal shutdown shutdown v out v best r1 r2 fb vout comp as1331 ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 11 - 16 as1331 datasheet - detailed description other as1331 features shutdown the part is in shutdown mode while the voltage at pin en is below 0.4v and is active when the voltage is higher than 1.4v. note: en can be driven above v in or v out , as long as it is limited to less than 5.5v. output disconnect and inrush limiting during shutdown v out is going to 0v so that no current from the input source is running thru the device. the inrush current is also limited at turn-on mode to minimize the surge currents seen by the input supply. these features of the as1331 are realized by opening both p-channel mosfets of the rectifiers, allowing a true output disconnect. power-ok and low-battery-detect functionality lbo goes low in startup mode as well as during normal operation if: - the voltage at the lbi pin is below lbi threshold (1. 25v). this can be used to monitor the battery voltage. - lbi pin is connected to gnd and v out is below 92.5% of its nominal value. lbo works as a power-ok signal in this case. the lbi pin can be connected to a resistive-divider to monitor a particular definable voltage and compare it with a 1. 25v internal reference. if lbi is connected to gnd an inte rnal resistive-divider is activated and connected to the output. therefore, the power-ok functionality can be realised with no additional external components. the power-ok feature is not active during shutdown and provides a power-on-reset function that can operate down to v in = 1.8v. a capacitor to gnd may be added to generate a power-on-reset delay. to obtain a logic-level output, connect a pull-up resistor from pin lbo to pin vout. larger values for this resistor will help to minimize current consumption; a 100k resistor is perfect for most applications (see figure 25 on page 12) . for the circuit shown in the left of figure 24 on page 12 , the input bias current into lbi is very low, permitting large- value resistor-divider networks while maintaining accuracy. place the resistor-divider network as close to the device as po ssible. use a defined resistor for r 5 and then calculate r 4 as: where: v lbi (the internal sense reference voltage) is 1.25v. in case of the lbi pin is connected to gnd, an internal re sist or-devider network is activated and compares the output voltage with a 92.5% voltage threshold. for this particular power-ok application, no external resistive components are necessary. thermal shutdown to prevent the as1331 from short-term misuse and ov erload conditions the chip includes a thermal overload protection. to block the normal operation mode all switches will be turned off. the device is in thermal shutdown when the junction temperature exceeds 145c. to resume the no rmal operation the temperature has to drop below 135c. a good thermal path has to be provided to dissipate the heat generated within the package. otherwise it?s not possible t o operate the as1331 at its useable maximal power. to dissipate as much heat as possible away from the package into a copper plane with as much area as possible, it?s reco mmended to use multiple vias in the printed circuit board. it?s also recommended to solder the exposed pad (pin 11) to the gnd plane. note: continuing operation in thermal overload conditions may damage the device and is considered bad practice. (eq 1) r 4 r 5 v in v lbi ----------- 1 ? ?? ?? ? = ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 12 - 16 as1331 datasheet - detailed description output voltage selection the as1331 is available in two versions (see ordering information on page 15) . one version can only operate at one fixed output voltage (see figure 25) and the other version can operate with user-adjustable output voltages from 2.5v to 3.3v by connecting a voltage divider between the pins vout and fb (see figure 24) . figure 24. liion to adjustable output voltage the output voltage can be adjusted by selecting different values for r 1 and r 2 . calculate v out by: where: v fb = 1.25v, v out = 2.5v to 3.3v; r 2 (the predefined resistor in the resistor devider) should be 270k . r 3 (the pull-up resistor for the lbo pin) should be ~100k . figure 25. liion to 3.3v wit h pok - fixed output voltage liion battery as1331-ad c 2 22f r 2 r 1 on off c 1 10f pgnd 3 sw2 2 v out 2.5v to 3.3v 6 en 10 fb 5 vin 1 vout sw1 4 l1 6.8h 8 lbo 7 lbi gnd 9 r 3 r 4 r 5 (eq 2) v out v fb 1 r 1 r 2 ----- - + ?? ?? = liion battery as1331- 3.3v c 2 22f on off c 1 10f pgnd 3 sw2 2 v out 3.3v 300ma 6 en 5 vin 1 vout sw1 4 l1 6.8h 8 lbo 7 lbi gnd 9 10 fb r 3 ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 13 - 16 as1331 datasheet - application information 9 application information component selection only three power components are required to complete t he design of the buck-boost converter. for the adjustable version v out programming resistors are needed. the high operating frequency and low peak currents of the as1331 allow the use of low value, low profile inductors and tiny external ceramic capacitors. inductor selection for best efficiency, choose an inductor with high frequency core material, such as ferrite, to reduce core losses. the inductor should have low dcr (dc resistance) to reduce the i2r losses, and must be able to handle the peak inductor current without saturating. a 6.8h inductor with a >600ma current rating and <400m dcr is recommended. capacitor selection the buck-boost convertor requires two capacitors. cerami c x5r or x7r types will minimize esl and esr while maintaining capacitance at rated voltage over temperature. the v in capacitor should be at least 2.2f. the v out capacitor should be between 10f and 47f. a larger output capacitor should be used if lower peak to peak output voltage ripple is desired. a larger output capacitor will also improve load regulation on v out . see ta b l e 5 for a list of capacitors for input and output capacitor selection. table 4. recommended inductors part number l dcr current rating dimensions (l/w/t) manufacturer lps3015-682m 6.8h 300m 0.89a 3.0x3.0x1.5mm coilcraft www.coilcraft.com epl2014-682m 6.8h 287m 0.80a 2.0x2.0x1.4mm xpl2010-682m 6.8h 336m 0.73a 2.0x1.9x1.0mm table 5. recommended input capacitor part number c tc code rated voltage dimensions (l/w/t) manufacturer grm188r61a225ke34 2.2f x5r 10v 0603, t=0.87mm murata www.murata.com grm188r60j475ke19 4.7f x5r 6.3v 0603, t=0.87mm grm219r60j106ke19 10f x5r 6.3v 0805, t=0.95mm table 6. recommended output capacitor part number c tc code rated voltage dimensions (l/w/t) manufacturer grm21br61a106ke19 10f x5r 10v 0805, t=1.35mm murata www.murata.com grm319r61a106ke19 10f x5r 10v 1206, t=0.95mm grm319r61a106ke19 10f x5r 10v 1210, t=0.95mm grm31cr61c226ke15 22f x5r 16v 1206, t=1.8mm grm31cr60j475me19 47f x5r 6.3v 1206, t=1.75mm ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 14 - 16 as1331 datasheet - package drawings and markings 10 package drawings and markings the device is available in a 10-pin 3x3mm tdfn package. figure 26. 10-pin 3x3mm tdfn package diagram note: 1. figure 26 is shown for illustration only. 2. all dimensions are in millimeters, angle is in degrees. 3. dimensioning and tolerancing conform to asme y14.5m-1994 . 4. n is the total number of terminals. 5. terminal #1 identifier and terminal numbering conventi on shall conform to jesd 95 -1 spp-012. details of ter - minal #1 identifier are optional, but must be located within the area indicated. the terminal #1 identifier may be eit her a mold, embedded metal or mark feature. 6. dimension b applies to metallized terminal and is me asured between 0.15 and 0.30mm from terminal tip. 7. nd refers to the maximum number of terminals on d side. 8. unilateral coplanarity zone applies to the exposed heat sink slug as well as the terminals. table 7. 10-pin 3x3mm tdfn package dimensions symbol min typ max symbol min typ max a 0.70 0.75 0.80 d bsc 3.00 a1 0.00 0.02 0.05 e bsc 3.00 a3 0.20 ref d2 2.20 2.70 l1 0.03 0.15 e2 1.40 1.75 l2 0.13 l 0.30 0.40 0.50 aaa 0.15 k 0.20 bbb 0.10 b 0.18 0.25 0.30 ccc 0.10 e 0.50 ddd 0.05 n 10 eee 0.08 nd 5 ggg 0.10 0 14 see detail b pin 1 index area (d/2 xe/2) btm view n-1 n b bb ddd d2 d2/2 b (d/2 xe/2) 2x 2x top view aaa c aaa c e pin 1 index area d ccc c a side view (nd-1) x e e 0.08 c a1 a b l c a b c e2 e2/2 seating plane a3 k c detail b datum a or b te rmina l tip e odd terminal side ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 15 - 16 as1331 datasheet - ordering information 11 ordering information the device is available as the standard products shown in table 8 . * on request note: all products are rohs compliant and pb-free. buy our products or get free samples online at icdirect: http://www.austriamicr osystems.com /icdirect for further information and requests, please contact us mailto:sales@austriamicrosystems.com or find your local distributor at http://www.a ustriamicrosystem s.com/distributor table 8. ordering information ordering code marking output description delivery form package as1331-btdt-ad asrp adjustable 300ma buck-boost synchro nous dc/dc converters tape and reel 10-pin 3x3mm tdfn AS1331-BTDT-25* asrr 2.5v 300ma buck-boost synchro nous dc/dc converters tape and reel 10-pin 3x3mm tdfn as1331-btdt-30* asrt 3.0v 300ma buck-boost synchro nous dc/dc converters tape and reel 10-pin 3x3mm tdfn as1331-btdt-33 asru 3.3v 300ma buck-boost synchro nous dc/dc converters tape and reel 10-pin 3x3mm tdfn ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_buck-boost/as1331 revision 1.04 16 - 16 as1331 datasheet copyrights copyright ? 1997-201 0, austriamicrosystems ag, tobelbaderstrasse 30, 8141 unterpremstaet ten, austria-europe. trademarks registered ?. all rights reserved. the mate rial herein may not be reproduced, adapted, merged, translated, stored, or used without the prio r written consent of the copyright owner. all products and companies mentioned are trademarks or reg istered trademarks of their respective companies. disclaimer devices sold by austriamicrosystems ag are covered by t he warranty and patent indemni fication provisions appearing in its term of sale. austriamicrosystems ag makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems ag reserves the right to change specifications and prices at any time and without notice. therefore, prior to designing this pro duct into a system, it is necessary to check with austriam icrosystems ag for current information. this product is intended for use in normal commercial applications. applications requiring extended temperature range, unusual environ mental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specif ically not recommended without additional processing by austriamicrosystems ag for each application. for shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. the information furnished here by austriamicrosystems ag is bel ieved to be correct and accurate. however, austriamicrosystems ag shall not be liable to recipient or any third party for any damages, including but not limited to pe rsonal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the tech - nical data herein. no obligation or liability to recipient or any third party shall arise or flow out of austriam icrosystems ag rendering of technical or other services. contact information headquarters austriamicrosystems ag tobelbaderstrasse 30 a-8141 unterpremstaetten, austria tel: +43 (0) 3136 500 0 fax: +43 (0) 3136 525 01 for sales offices, distributors and representatives, please visit: http://www.austriamicrosystems.com/contact ams ag technical content still valid

▲Up To Search▲

Price & Availability of AS1331-BTDT-25

	To Download AS1331-BTDT-25 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .