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d a t a sh eet preliminary speci?cation file under integrated circuits, ic11 1998 aug 19 integrated circuits TEA1501 greeny; greenchip ?
1998 aug 19 2 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 features direct off-line operation (90 to 276 v ac) low external component count integrated high voltage startup current source for a fast startup within 0.25 s integrated power switch: 650 v, 40 w , 0.25 a programmable primary peak current data transfer from isolated secondary side to non-isolated primary side via the transformer on/off function replaces expensive mains switch by a functional switch. green features low current consumption in off mode, typical 40 m a efficient burst mode operation, for 0.1 to 3 w output power. protection features cycle-by-cycle current control with programmable primary peak current over-voltage protection under-voltage lockout over-temperature protection. general description the TEA1501 (greeny) is the low power member of the greenchip ? family and is especially designed for standby switched mode power supply applications. greeny incorporates all the necessary functions for an efficient and low cost power supply for 90 to 276 v ac universal input. greeny is a monolithic integrated circuit and is available in a dip8 package. the design is made in the bcd_powerlogic750 process and includes the high voltage switching device. using only 7 functional pins, greeny contains extensive control functions to form a flexible and a reliable power supply with a minimum of external components. greeny operates in a flyback topology (see fig.1) with a fixed switching frequency, constant primary peak current control and regulates the output voltage in burst mode. applications include low power supplies and standby power supplies as used in television, monitor, lighting electronics and domestic appliances with an output power from 0.1 to 3 w. basic flyback configuration fig.1 basic flyback configuration. handbook, full pagewidth mgm823 TEA1501 on/off n p n a n s (1) v out v in v zener load src ood bt ref r src c bt r ref drn n.c. gnd vaux (1) the secondary earthing point is isolated from the primary earthing points.
1998 aug 19 3 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 quick reference ordering information symbol parameter conditions min. typ. max. unit v on/off on/off level greeny 0.4 0.7 0.9 v v data(off) data off level 20 m a 0.9 v - 2.4 - 1.8 - 1.2 ma i drn(off) drain current in off mode v ood < 0.4 v - 40 100 m a v bd breakdown voltage i drn(off) + 100 m a 650 -- v r dson on resistance t j =25 c, i drn =80ma 25 40 55 w v detect detection level 0.47 0.50 0.53 v type number package name description version TEA1501 dip8 plastic dual in-line package; 8 leads (300 mil) sot97-1
1998 aug 19 4 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 block diagram fig.2 block diagram. handbook, full pagewidth mgm820 vaux management reference block temperature protection switch oscillator startup current source supply current tracking modulator on/off level data off data on burst oscillator logic TEA1501 counter power switch gate driver leading edge blanking 5 6 3 2 48 1 v detect drn ood gnd vaux ref bt src pinning symbol pin description src 1 source of the power switch and input for primary current sensing ood 2 on/off input and data transfer output bt 3 input for burst capacitor ref 4 input for reference resistor vaux 5 supply input of the ic and input for voltage regulation gnd 6 ground n.c. 7 not connected to comply with safety requirements drn 8 drain of the power switch and input for startup current fig.3 dil8 package. handbook, halfpage 1 2 3 4 8 7 6 5 mgm821 TEA1501 drn n.c. ood gnd vaux ref bt src
1998 aug 19 5 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 functional description the TEA1501 contains a high voltage power switch, a high voltage startup circuit and low voltage control circuitry on the same ic. together with a transformer and a few external components a low power, isolated, flyback converter can be built. the greeny system operates in a burst mode. during each burst period the output voltage is regulated to a desired voltage level. system operation o n /o ff the greeny system can be switched on and off by means of a low cost, low voltage switch. in the off mode the startup current source and power switch are disabled. in the on mode, greeny delivers the startup current for the supply capacitor and after the supply voltage reaches the startup level greeny activates the power switch. s tartup the startup is realized with a high voltage startup current source instead of a dissipative bleeder resistor which is commonly used by low voltage control ics. when greeny is switched on, the startup current source is enabled and starts charging the vaux capacitor. the startup current level is high and accurate (typical 1.8 ma) which results in a well-defined and short startup time, within 0.25 s. after the supply voltage reaches the startup level the current source is switched off and the vaux capacitor supplies the chip. reducing the power dissipation in the current source to zero after startup is one of the green features of greeny. o peration after startup the flyback converter starts delivering energy to the secondary and auxiliary winding. the greeny system works with fixed switching frequency and fixed peak current. as all the windings of the flyback transformer have the same flux variation, the secondary voltage and the auxiliary voltage are related via the turns-ratio (n s /n a ). therefore, the isolated secondary voltage is controlled by the non-isolated auxiliary voltage. the burst mode operates by switching at high frequency until the vaux voltage reaches its regulation level of 20 v. greeny stops switching until the time period set by the burst oscillator has expired. at the start of the next burst period greeny starts switching at high frequency and repeats the cycle again. to guarantee a stable operation in a burst mode controlled system a vaux slope compensation circuit is integrated in greeny. the greeny system delivers a constant voltage to the secondary load until a burst duty cycle of 40%. d ata transfer the TEA1501 has a data transfer function which makes communication from the isolated secondary side to the non-isolated primary side of the transformer possible, without using an opto-coupler. this communication function is activated by increasing the secondary load. with this data transfer function a main power supply can be switched on and off by the greeny system. the power delivered to the secondary and auxiliary winding is proportional to the number of primary current pulses per burst period, provided that the converter operates in discontinuous conduction mode. during each burst period the number of primary current pulses is counted. a threshold (n data ) of 56 pulses is integrated. the clamp level on the ood pin is set to data-on level from data-off level in case the n data threshold is passed. this data-on clamp level can be sensed by the on/off input of a main supply control ic of the greenchip ? family. the data-on clamp level is maintained until a burst appears with a number of pulses below the n data threshold.
1998 aug 19 6 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 waveforms of greeny in the off mode, startup mode and operation mode fig.4 waveforms of greeny in the off mode, startup mode and operation mode. handbook, full pagewidth mgm828 switch period burst period operation startup off v ood on/off level v bt v out v vaux regulation level v src detection level v drn switch on time burst on time
1998 aug 19 7 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 circuit block description on/off/data section the on/off/data block contains a comparator for the on/off level and is active if the drain voltage is above 50 v (dc). the typical current consumption in off mode is 40 m a. the data signal changes the clamp level on the ood pin to indicate data transfer: low clamp level for data-off and high clamp level for data-on. vaux management the vaux management block is active when greeny is in the on mode. this vaux management block senses the vaux voltage and determines the state of greeny: startup or normal operation. during startup the following circuits are active: on/off/data section, reference block (partial), vaux management, temperature protection and the startup current source. fig.5 i vaux versus v vaux . handbook, halfpage mgm824 20 v 16 v 12 v uvlo v start v vaux(max) v vaux startup operation i vaux i start startup current source the startup sequence is carried out using an accurate startup current source. the startup current flows from the drn pin to the vaux pin via the startup current source and charges the vaux capacitor. when vaux reaches the startup threshold the startup current is switched off and the flyback converter starts operating and the output voltage rises. the vaux capacitor must be capable of supplying the entire supply current (i vaux(low) ) until the output voltage is in regulation. from that moment the vaux capacitor is charged by the flyback converter via the auxiliary winding. reference block the reference block contains a bandgap circuit which determines all the accurate and temperature independent reference voltages and currents. it defines the voltage detection level for the primary current comparator and it defines the voltage at the ref pin. the value of the reference resistor determines the burst frequency, the switching frequency and the leading edge blanking time. temperature protection the temperature protection circuit senses the chip temperature using a proportional to absolute temperature voltage (v ptat ) generated in the reference block. if the chip temperature exceeds 140 c the power switch and the startup current source are disabled. when the chip cools down below 100 c, the startup circuit is enabled again. switch oscillator the switch oscillator determines the switching frequency and the maximum on-time of the power switch. the maximum on-time is set at 66% of the switching period. the switching frequency is determined by the reference resistor at the ref pin and an internal capacitor. the switching frequency can be adjusted in a range from 20 to 50 khz, thus above the audible spectrum.
1998 aug 19 8 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 burst oscillator the burst oscillator generates a triangular wave signal for determination of the burst frequency. the burst frequency is determined accurately and temperature independent by the externally connected reference resistor r ref and burst capacitor c bt . gate driver the gate driver switches the power switch. the power switch is turned on at the beginning of every oscillator cycle and is turned off by the primary current comparator or by the maximum on-time. the power switch is also prevented from turning on if the vaux voltage has reached its regulation level or in case of active over temperature protection or in case of active under voltage lockout protection. power switch the power switch is an integrated high voltage ldmost with a r dson of 40 w, a maximum peak drain voltage of 650 v , a maximum continuous drain voltage of 500 v and a maximum drain current of 0.25 a. primary current comparator the primary current comparator senses the voltage across the external sense resistor r src which reflects the primary current. the detection level of the comparator is 0.5 v. the power switch is switched off quickly when the source voltage exceeds this detection level. the comparator has a typical propagation delay of 80 ns. if the dv/dt of the drain voltage has to be limited for emi reasons, a capacitor can be connected between the drn and src pins of greeny. the discharge current of this emi capacitor does not flow through the sense resistor r src and does not activate the comparator. leading edge blanking to prevent the power switch from switching off due to the discharge current of the capacitance on the drn pin a leading edge blanking (leb) circuit has been implemented. the leading edge blanking time is defined as the maximum duration time needed to discharge the capacitance at the drain of the power switch. the leading edge blanking time is determined by the reference resistor to obtain an accurate and temperature independent time. the leb time tracks with the period time of the switch oscillator. modulator the modulator determines the regulation level of the vaux voltage. for a burst duty cycle from 0 to 40% the vaux voltage is regulated to 20 v. for stable operation in burst mode a decrease in regulation voltage is integrated for a burst duty cycle above 40%. at 100% burst duty cycle the regulation voltage is 17.5 v. counter the power delivered to the load (auxiliary and secondary) is a function of the number of energy pulses per burst, according to the following formula: where h is the efficiency, l p is the primary inductance, i prim is the primary peak current, f burst is the burst frequency and n is the number of pulses in one burst period. the counter counts the number of pulses in each burst period and detects if the n data threshold is passed. the counter state is used for the data transfer function and for the supply current tracking. fig.6 regulation level v vaux versus burst duty cycle. handbook, halfpage mgm826 regulation level vaux (v) s vaux 17.5 20 0 0 40 cp vaux burst duty cycle (%) 100 p load h 1 2 -- - l p i prim 2 f burst n =
1998 aug 19 9 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 supply current tracking for obtaining good load regulation, especially with low cost transformers, a tracking circuit is included. the tracking circuit makes the supply current of greeny a function of the secondary load. this makes the voltage drop across the series resistance of the auxiliary winding proportional to the voltage drop across the series resistance of the secondary winding. therefore, the secondary output voltage tracks with the vaux regulation voltage. the tracking starts at a counter state of 28. for a counter state from 28 up to 112 (typical values) the supply current of greeny rises linearly with the counter state according to the following formula (see fig.7). for counter states of 112 and higher the supply current remains on its maximum value. i vaux k tracking n = fig.7 i vaux versus counter state. handbook, halfpage mgm825 i vaux (ma) i vaux(high) i vaux(low) 6.7 1.7 28 56 n data counter state 112
1998 aug 19 10 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 design equations primary peak current the primary peak current is determined by the sense resistor r src and may be calculated as shown below: m inimum value of r src the maximum drain current is 0.25 a, this results in a minimum value for resistor r src of 2.0 w . switch oscillator the maximum output power of the converter is a function of the switching frequency, provided that the converter operates in discontinuous conduction mode. where h is the efficiency, lp is the primary inductance, i prim is the primary peak current and f switch is the switching frequency. the switching frequency can be adjusted between 20 and 50 khz by the reference resistor r ref : r ange of r ref values the minimum value for resistor r ref is 24 k w , the maximum value is 62 k w . leading edge blanking the leading edge blanking time is determined by the reference resistor r ref as shown below: the leading edge blanking time consists of a constant time and a time which tracks with the period time of the switch oscillator r src v detect i prim ---------------- = p out(max) h 1 2 -- - l p i prim 2 f switch = f switch 1 k switch r ref --------------------------------- = t leb t constant k leb r ref () + = burst oscillator the power threshold for data transfer is determined by the burst frequency, according to the following formula: the power ratio between p data and p out(max) is therefore: the desired p data /p out(max) ratio determines the burst frequency. for example, when the desired p data /p out(max) ratio is 0.5 then the burst frequency has to be 450 hz at 50 khz switching frequency. the burst frequency can be adjusted by the reference resistor r ref and the burst capacitor c bt as shown below: m inimum value of c bt the minimum value for capacitor c bt is 3.3 nf. p data h 1 2 -- - l p i prim 2 f burst n data = p data p out(max) --------------------- - f burst n data f switch ------------------------------- = f burst 1 k burst r ref c bt --------------------------------------------- - = fig.8 f burst versus p data /p out(max) . handbook, halfpage mgm827 f burst (hz) f switch = 20 khz f switch = 50 khz 450 180 900 0 0 0.5 1 p data /p out(max)
1998 aug 19 11 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 limiting values in accordance with the absolute maximum rating system (iec 134). all voltages are referred to ground. positive currents ?ow into the ic. all pins not mentioned in the voltage list are not allowed to be voltage driven. thermal characteristics symbol parameter min. max. unit voltages v drn commutation voltage peak: v in +v zener - 0.4 +650 v v src - 0.4 +12 v v vaux - 0.4 +24 v v bt - 0.4 +5 v currents i drn 0 0.25 a i src 0 0.25 a i ood - 1+ 5ma i ref - 1 +0 ma i bt - 1 +0.05 ma power and temperature p tot total power dissipation, t amb <70 c - 0.7 w t j junction temperature - 10 +140 c t stg storage temperature - 40 +150 c t amb operating ambient temperature - 10 +70 c symbol parameter conditions value unit r th(j-a) thermal resistance from junction to ambient in free air 96 c/w
1998 aug 19 12 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 characteristics conditions unless otherwise speci?ed: - 10 c 0.9 v - 3.0 - 2.2 - 1.5 ma i start startup current, vaux pin v vaux =8v, v ood > 0.9 v - 2.4 - 1.8 - 1.2 ma i start startup current, vaux pin v vaux = 15 v, v ood > 0.9 v - 1.9 - 1.3 - 0.8 ma i drn(on) drain current during startup v vaux =0v, v ood > 0.9 v 1.8 2.6 3.4 ma i drn(off) drain current in off mode v ood < 0.4 v, v drn = 300 v - 40 100 m a reference block v ref reference voltage 1.18 1.23 1.28 v temperature protection t prot thermal shutdown 130 140 150 c t hys thermal hysteresis 35 40 45 c switch oscillator k switch switch oscillation constant 0.67 0.82 1.00 m s/k w d cy(max) maximum switch duty cycle 60 66 72 % burst oscillator k burst burst oscillation factor 7.0 7.5 8.1 counter n data number of current pulses for data transfer 50 56 62 power switch v bd breakdown voltage i drn(off) + 100 m a 650 -- v r dson on resistance t j =25 c, i drn =80ma 25 40 55 w t f fall time v drn = 300 v, rdr = 2 k w- 50 - ns t r rise time v drn = 300 v, rdr = 2 k w- 100 - ns
1998 aug 19 13 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 quality specification quality according to snw/fq-611 part e. the esd voltage according to the human body model is limited to 1200 v for the drn pin. comparator v detect primary peak detection level 0.47 0.50 0.53 v t pd propagation delay dvsource/dt = 0.5 v/ m s - 80 - ns leading edge blanking t constant constant part of the leb time, independent of rref 100 250 400 ns k leb leb time constant 4 5 6 ns/k w modulator v vaux(max) maximum v vaux non-compensation d burst 2n data 5.4 6.7 8.0 ma symbol parameter conditions min. typ. max. unit
1998 aug 19 14 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 low power standby application greeny can operate as a stand alone low power supply or as a standby power supply incorporated in a main smps. together with a greenchip ? tea1504 a power supply with ultra low standby power can be built where greeny supplies the microprocessor with the power on/off indicator and the greenchip ? controls the main power supply during normal operation. operation modes the power supply with a greeny TEA1501 and a greenchip ? tea1504 can be in three different modes, according to the state of switches s1 and s2 (see fig.9). table 1 operation modes of power supply power supply in off mode the power supply can be switched on and off by means of the functional switch s1. this functional switch replaces the generally used high voltage mains switch. the power supply is in off mode if the switch s1 is open. if the switch s1 is closed the voltage applied on the ood pin of greeny is above the on/off level (0.7 v) and greeny starts up, the power supply enters the standby mode or the normal operation mode. s1 s2 operation mode open open or closed greeny is in off mode, greenchip ? is in off mode, power supply is in off mode. closed open greeny is on mode, greenchip ? is in off mode, power supply is in standby mode. closed closed greeny is in on mode, greenchip ? is in on mode, power supply is in normal operation mode. when the switch s1 is opened the voltages on the ood pin of greeny and the oob pin of the greenchip ? are 0 v. the power supply and the power on/off indicator (led) are switched off immediately and the power supply is in the off mode again. power supply in standby mode when switch s1 is closed greeny is in the on mode and supplies the microprocessor and the power on/off indicator. the microprocessor controls the state of switch s2. the power supply is in the standby mode when switch s2 is open. the output power of greeny is determined by the microprocessor and is below the p data level when switch s2 is open. the clamp level on the ood pin of greeny is the data-off level with a typical value of 1.3 v which is below the on/off level of the greenchip ? which has a typical value of 2.5 v. the greenchip ? remains in off mode. power supply in normal operation mode the power supply changes its operation mode from standby to normal operation by closing the switch s2. the switch s2 is placed at the isolated secondary side of the greeny and controls, via the data transfer function of greeny, the operation mode of the power supply. when the microprocessor closes switch s2 the output power of greeny is increased. the output power exceeds the p data level and the clamp level on the ood pin of greeny is set to data-on level with a value of 4 v. the voltage on the oob pin of the greenchip ? is above its on/off level of 2.5 v and the greenchip ? starts up. the power supply enters normal operation mode, greeny supplies the microprocessor and the greenchip ? supplies the main load.
1998 aug 19 15 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 application diagram with greeny TEA1501 and greenchip ? tea1504 fig.9 application diagram with greeny TEA1501 and greenchip ? tea1504. handbook, full pagewidth mgm822 tea1504 greenchip tm output greeny output (1) (1) TEA1501 oob s1 dem n.c. gnd n.c. vctrl iref vin n.c. n.c. driver src ood bt s2 led ref drn n.c. gnd vaux isense vaux ds micro- processor (1) secondary earthing points are isolated from their primary earthing points.
1998 aug 19 16 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 package outline references outline version european projection issue date iec jedec eiaj sot97-1 92-11-17 95-02-04 unit a max. 12 b 1 (1) (1) (1) b 2 cd e e m z h l mm dimensions (inch dimensions are derived from the original mm dimensions) a min. a max. b max. w m e e 1 1.73 1.14 0.53 0.38 0.36 0.23 9.8 9.2 6.48 6.20 3.60 3.05 0.254 2.54 7.62 8.25 7.80 10.0 8.3 1.15 4.2 0.51 3.2 inches 0.068 0.045 0.021 0.015 0.014 0.009 1.07 0.89 0.042 0.035 0.39 0.36 0.26 0.24 0.14 0.12 0.01 0.10 0.30 0.32 0.31 0.39 0.33 0.045 0.17 0.020 0.13 b 2 050g01 mo-001an m h c (e ) 1 m e a l seating plane a 1 w m b 1 e d a 2 z 8 1 5 4 b e 0 5 10 mm scale note 1. plastic or metal protrusions of 0.25 mm maximum per side are not included. pin 1 index dip8: plastic dual in-line package; 8 leads (300 mil) sot97-1
1998 aug 19 17 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 soldering introduction there is no soldering method that is ideal for all ic packages. wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. however, wave soldering is not always suitable for surface mounted ics, or for printed-circuits with high population densities. in these situations reflow soldering is often used. this text gives a very brief insight to a complex technology. a more in-depth account of soldering ics can be found in our data handbook ic26; integrated circuit packages (order code 9398 652 90011). soldering by dipping or by wave the maximum permissible temperature of the solder is 260 c; solder at this temperature must not be in contact with the joint for more than 5 seconds. the total contact time of successive solder waves must not exceed 5 seconds. the device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (t stg max ). if the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. repairing soldered joints apply a low voltage soldering iron (less than 24 v) to the lead(s) of the package, below the seating plane or not more than 2 mm above it. if the temperature of the soldering iron bit is less than 300 c it may remain in contact for up to 10 seconds. if the bit temperature is between 300 and 400 c, contact may be up to 5 seconds.
1998 aug 19 18 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 definitions life support applications these products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify philips for any damages resulting from such improper use or sale. data sheet status objective speci?cation this data sheet contains target or goal speci?cations for product development. preliminary speci?cation this data sheet contains preliminary data; supplementary data may be published later. product speci?cation this data sheet contains ?nal product speci?cations. limiting values limiting values given are in accordance with the absolute maximum rating system (iec 134). stress above one or more of the limiting values may cause permanent damage to the device. these are stress ratings only and operation of the device at these or at any other conditions above those given in the characteristics sections of the speci?cation is not implied. exposure to limiting values for extended periods may affect device reliability. application information where application information is given, it is advisory and does not form part of the speci?cation.
1998 aug 19 19 philips semiconductors preliminary speci?cation greeny; greenchip ? TEA1501 notes
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communications, building be-p, p.o. box 218, 5600 md eindhoven, the netherlands, fax. +31 40 27 24825 argentina: see south america australia: 34 waterloo road, north ryde, nsw 2113, tel. +61 2 9805 4455, fax. +61 2 9805 4466 austria: computerstr. 6, a-1101 wien, p.o. box 213, tel. +43 160 1010, fax. +43 160 101 1210 belarus: hotel minsk business center, bld. 3, r. 1211, volodarski str. 6, 220050 minsk, tel. +375 172 200 733, fax. +375 172 200 773 belgium: see the netherlands brazil: see south america bulgaria: philips bulgaria ltd., energoproject, 15th floor, 51 james bourchier blvd., 1407 sofia, tel. +359 2 689 211, fax. +359 2 689 102 canada: philips semiconductors/components, tel. +1 800 234 7381 china/hong kong: 501 hong kong industrial technology centre, 72 tat chee avenue, kowloon tong, hong kong, tel. +852 2319 7888, fax. +852 2319 7700 colombia: see south america czech republic: see austria denmark: prags boulevard 80, pb 1919, dk-2300 copenhagen s, tel. +45 32 88 2636, fax. +45 31 57 0044 finland: sinikalliontie 3, fin-02630 espoo, tel. +358 9 615800, fax. +358 9 61580920 france: 51 rue carnot, bp317, 92156 suresnes cedex, tel. +33 1 40 99 6161, fax. +33 1 40 99 6427 germany: hammerbrookstra?e 69, d-20097 hamburg, tel. +49 40 23 53 60, fax. +49 40 23 536 300 greece: no. 15, 25th march street, gr 17778 tavros/athens, tel. +30 1 4894 339/239, fax. +30 1 4814 240 hungary: see austria india: philips india ltd, band box building, 2nd floor, 254-d, dr. annie besant road, worli, mumbai 400 025, tel. +91 22 493 8541, fax. +91 22 493 0966 indonesia: pt philips development corporation, semiconductors division, gedung philips, jl. buncit raya kav.99-100, jakarta 12510, tel. +62 21 794 0040 ext. 2501, fax. +62 21 794 0080 ireland: newstead, clonskeagh, dublin 14, tel. +353 1 7640 000, fax. +353 1 7640 200 israel: rapac electronics, 7 kehilat saloniki st, po box 18053, tel aviv 61180, tel. +972 3 645 0444, fax. +972 3 649 1007 italy: philips semiconductors, piazza iv novembre 3, 20124 milano, tel. +39 2 6752 2531, fax. +39 2 6752 2557 japan: philips bldg 13-37, kohnan 2-chome, minato-ku, tokyo 108-8507, tel. +81 3 3740 5130, fax. +81 3 3740 5077 korea: philips house, 260-199 itaewon-dong, yongsan-ku, seoul, tel. +82 2 709 1412, fax. +82 2 709 1415 malaysia: no. 76 jalan universiti, 46200 petaling jaya, selangor, tel. +60 3 750 5214, fax. +60 3 757 4880 mexico: 5900 gateway east, suite 200, el paso, texas 79905, tel. +9-5 800 234 7381 printed in the netherlands 295102/750/01/pp20 date of release: 1998 aug 19 document order number: 9397 750 03371

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